Series Zefiro

Transcription

Series Zefiro

Ventilconvettori
Fan coil units
Ventilconvecteurs
Klimatruhen
Series
Zefiro
Technical Manual
Cod. AER.MT.Z.GB.005.03/09
We send all our official communications only by Newsletter. In order to have always the updated
documentation please do the registration on our website www.aertesi.com <http://www.aertesi.com/>
.
Series Zefiro
SUMMARY
1. SERIES ZEFIRO / GENERAL
1.1
1.2
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
Fan coil units ………………………………………………….…………………………………
Fan coil unit components ………………...……………………………………………………….
Internal Structure ……………………………………………………………..…………………..
Exchanger ………………………..……………………………………….……………………
Intake air filter ……………………………..……………………………….…………………….
Casing ………………………………………………………….…………….……………………
Fan Assembly …………………………………………………………………………………….
Control box ……………………………………..……….…………………..…………………….
Auxiliary drain ……………………………………..……………………………………..…...
1.1
1.2
1.3
1.3
1.4
1.4
1.5
1.5
1.6
2.MODELS and DIMENSIONS
2.1
2.2
2.3
2.4
2.5
2.6
2.6.1
2.6.2
VA- HA Models - Vertical and horizontal fan coil units with casing …………….….
VB – HB Models - Vertical and horizontal fan coil units with casing and accessible front air
inlet …………………………………………………………………….
VL - HL Models - Vertical and horizontal fan coil units with casing and accessible front air
inlet
VC,VD, VE,VF,HC,HD Models - Built-in fan coil units …………..………………….
Dimensions and Weights ………………………………………………...………………………
How to order ……………………………………………………………………………………...
Identifying the model …………………………………….………………………………………..
Selection information …………………………………………………………………………….
2.1
2.2
2.2
2.3
2.4
2.11
2.11
2.11
3.PERFORMANCES
3.1
3.2
3.3
3.4
3.5
3.6
3.7
3.8
3.8.1
3.8.2
3.8.3
3.8.4
3.8.5
Air flow ……………………………………………………………….………………………….
Cooling capacity for three standard speeds…………………………….………………….…..
Heating capacity for three standard speeds ………………….………………………………..
Cooling capacity of the direct expansion coils ……………….……………..………………….
Pressure drops in exchangers ………………………………………….……………………..
Water content of the coils ……… ……………………………………………………………….
Electrical characteristics of motors …………………………………..………………………...
Noise Emissions …………………………………………………….……………………………...
Power Sound level by octave band …………………………………….…………………………….
Pressure Sound level in a closed room …………………..………………………………………..
Variation in sound pressure depending on the volume of the room and the reverberation
time……………………………………………………………………………………………..
Variation in sound pressure according to distance ……………………………………..
Noise curves (NR)……………………………………………………………………………….
3.1
3.3
3.4
3.7
3.8
3.9
3.9
3.10
3.10
3.11
3.12
3.12
3.13
4.ACCESSORIES AND VARIANTS
4.1
4.1.1
4.1.2
4.1.3
4.1.4
4.1.5
4.1.6
4.1.7
4.1.8
4.1.9
4.2
4.2.1
4.3
4.4
4.4.1
4.4.2
Operating control devices ……………………………………………………………………….
TM…………………………………………..………………………………………………………
ELMZ ………………………………………………………………………..…………………..
Instructions how to install the wall controls………………………………………………………
CSN…………………………………………………………………………………………….
SATH…………………………………………………………………………………………….
TOP 1...........................................................................................................................................
MCS ……………………………………………………………………………………………….
AS………………………………………………………………………………………………..
Supply Notes ………………………………………………………………………………………..
Heat exchangers …………………………………………………………………………………
Direct expansion exchangers BE ……………………………………………………………….
Electric heater EH ………………………………………………………………………………..
Regulation valves ………………………………….……………………………………………...
Valve body …………………………...……………………………………………………………
Actuators ………………..…………………………………………………………………………
4.1
4.1
4.2
4.2
4.3
4.4
4.6
4.9
4.11
4.11
4.12
4.12
4.13
4.14
4.14
4.15
i
Series Zefiro
4.4.3
4.4.4
4.5
4.5.1
4.5.2
4.5.3
4.5.4
4.5.5
4.5.6
4.5.7
4.5.8
4.5.9
4.5.10
4.5.11
4.5.12
4.5.13
4.5.14
4.5.15
4.6
4.6.1
4.6.2
4.7
Assembly kit and lockshields …………………………..………………………………………..
Table of available accessory combinations ………………..………………………………….
System accessories ……………………………….………………………………………………..
CZ - Pair of feet ………………………………………………………………………………..
CZF - Plinth with openable hatch ……………………………………………………………….
PAE/V, PAE/H - External air shutters for vertical and horizontal models ………………….….
PAE/HF External air inlet connection
PAEM - Motor for external air shutter …………………………………………………..……..
PPV, – Rear panels for vertical models ………………………….……………………………….
PPHA/B- Rear panels for horizontal models …………………..……………………………….…
PMZE – Delivery plenum with circular connectors ……………………………………………...
PM 90ZE – Delivery elbow connector …………………..……………………………………...
RTZE – Delivery telescopic connector ……………….…………………………………………..
GFM – Fixed delivery grille ……………………………………………………………………...
GF2 - Dual adjustment delivery grille …………………………………………………………..
PACZE - Suction intake plenum ………………………………………………………………...
PAZE – Suction intake plenum with spigots ……………………………………………………….
GFA – Fixed suction intake grille ………….……………………………………………………..
Other accessories …………………………………………………………………………………
PSCZE – Condensate drain pump ………………………………………………………………….
FAG3– Special filter ………………………………………….…………………………………
Guide to accessories and spare parts …………………………………………………………….
4.15
4.16
4.17
4.17
4.17
4.18
4.19
4.19
4.20
4.20
4.21
4.22
4.22
4.23
4.23
4.24
4.25
4.25
4.26
4.26
4.26
4.27
5.ELECTRICAL DIAGRAMS
5.1
5.2
Fan coil units motors Wiring ………………………………………………
Electrical diagrams ………………………………………………………………
5.2
5.3
6.INSTALLATION AND MAINTENANCE
6.1
6.1.1
6.2
6.3
6.4
6.5
6.5.1
6.6
6.6.1
6.6.2
6.7
6.7.1
6.7.2
6.8
Preliminary operations …………………………..………………………………………
Models with casing ………………..………………………………………………………………
Wall or ceiling fixing …………………………..…………………………………………..
Hydraulic connections ……………………………………………………………………………...
Electrical wirings……………………………………………………………………………
Starting up the appliances ………………………………………..………………………………..
Delivery grilles and fixing the hatches ……………………………………………………..
Alternative layouts ……………………………………………………………………………….
Inverting the hydraulic connections ……………………………………………………………
Changing fan speed ……………………………………………………………………………….
Maintenance ……………………………………………………………………………………….
Removing and cleaning the filter ………………………………………………………………...
Inspection and/or removal of the fan assembly motor (GRV)………………………………….
Examples of typical installations ………………………………………………………………...
6.1
6.1
6.2
6.4
6.5
6.5
6.5
6.6
6.6
6.7
6.7
6.7
6.7
6.8
7.APPENDIX – Performance data
7.1
7.2
7.2.1
7.2.2
7.3
7.4
7.5
7.6
7.7
7.7.1
7.7.2
ii
Air flows with external static pressure …………………………………………………………...
Heat exchange outputs ……………………………………………………………………………
Cooling outputs with water coil …………………………………………………………………..
Heating outputs with water coil ……………… …………………..………………………………..
Summary graphs cooling outputs ………………………………………………………………..
Summary graphs heating outputs ………………………………………………………………..
Power Sound level at rated air flows …………………………………………………………
Pressure Sound level ……………………………………………………………………………..
Working with water –glycol……. ……………………………………………………………
Concentrations of glycol …………………………………..……………………………………...
Performance variations with water - glycol ………….…………………………………………
7.1
7.2
7.2
7.3
7.6
7.11
7.20
7.22
7.24
7.24
7.24
Series Zefiro
1.
ZEFIRO SERIES / GENERAL
1.1
Fan coil units
A fan coil is an unit designed for room air-conditioning. Heating or cooling is realized by the heat
exchange between the air coming in contact with the exchanger and the water flowing inside it. To make
this change more effective, a fan force circulates the air across the exchanger (coil). Heat will therefore be
added to or subtracted from the air in the room, depending on whether the coil receives hot or cold water
from a centralised system.
If sufficiently cold water enters the exchanger, the humidity in the air condenses on the exposed surfaces of
the coil, thereby dehumidifying the air in the room.
Compressed gas direct expansion coils can also be used to cool and dehumidify the air.
The fan coil unit is fitted with a system for draining the condensed humidity.
A fan coil unit must therefore guarantee:
uniform exploitation of the surface of the exchanger;
suitable air flows depending on operating conditions;
good condensate insulation;
simple condensate drainage;
adjustment of water flow in the exchanger.
The fan coil units in Zefiro Series feature:
multi-speed motors for optimising air speed;
total insulation of the surfaces the treated air comes into contact with;
electronic control systems for regulation of the operation
The Zefiro fancoil units can combine different types of exchangers with different types of valves for adjusting
the input water and numerous electronic control systems, thereby making them particularly versatile and suitable
for the most varied room conditioning requirements.
Performance figures in standard operating conditions are shown in the table in chapter 3. The company also has a
selection software which helps choose the most suitable fan coil unit for non-standard operating conditions.
1.1
Series Zefiro
1.2
Fan coil unit components (ref. mod. VA)
Key:
1
Internal structure
2
Fan assembly
3
Control box
4
Heat exchanger
5
Auxiliary drain collector
6
Removable grill + cover
7
Metallic casing
8
Plastic flanks
9
Filter
1.2
Series Zefiro
1.2.1 Internal structure
The internal structure is made from galvanised sheet
metal and is 0.8 mm or 1 mm thick, depending on the
purpose each part of it serves.
The rear part features slots for wall-mounting.
The hexagonal hole next to the water connections
prevents the coil manifolds from twisting if the pipe
unions are over-tightened.
Main condensate collector is incorporated in fan
assembly for vertical models. It can be removed
independently of the fan assembly for horizontal
models. Its double sloping shape allows the water to be
drained when the fan coil unit is installed either
horizontally or vertically.
All the components are lagged with M1 class fireproof
material
Horizzontal drain pans are painted.
1.2.2
Exchanger
The exchangers are made with aluminium fins screwed onto copper tubes. The manifolds feature ½" GF
connections. All the coils are subjected to a 30 bar tightness test and are designed to withstand a maximum
operating pressure of 10 bar.
The Zefiro fan coil units can incorporate water circulation coils with and, when required for systems with dual
input lines (hot/cold), an additional one row coil may be added.
Three-row R134A or R407C direct expansion coils can also be mounted on the Silent series of fan coil units.
The connections to the coolant input line comprise various diameters of copper tubes.
The corrugated shape of the coil fins and the parallel circulation feature of the water or coolant compared with
the direction of the air offer improved heat exchange effectiveness and efficiency.
For further details and information, please consult paragraph 4.2.
1.3
Series Zefiro
1.2.3 Intake air filter (FA)
The filter is nylon (G1 class), it is housed in a metal frame.
Regular filter cleaning ensures perfect performance.
For special uses, filters with higher filtering characteristics,
classe G3 can be supplied on request.
The filters are 195 mm high while their lengths depend on
the size of the fan coil unit (see following table)
Size
308-316-320
628-634
840-847-1250-1260
1575
1885
510
770
1030
1290
1550
975X165
1225X165
1475X165
length [mm]
thickness [mm]
VL-HL only
1.2.4
6
465X165
725X165
Casing (CAB)
The casing is made of painted sheet metal and ABS. Front
metal painted pannel is fixed to the structure with screws
and can painted in various colours of the RAL range (the
standard colour is RAL 9010). In case of different colours,
conctact the factory for the offer and the delivery time.
Heat and deformation proof ABS grilles are mounted on
the delivery line. Their special chemical composition
preserves their colour (RAL 9002) and long-term
efficiency. The grilles are shaped in order to optimise air
distribution in the room. Their press fit assembly allows
them to be inverted to distribute the air in another way.
Two hatches for accessing the control panel (if fitted) and
for inspecting the connections and any feed valves are
mounted on the sides of the fan coil unit delivery. These
hatches can be fixed to the body with screws hidden by
special plugs in order to prevent access being made
(installation in schools, public areas, etc.)
The grilles and hatches are protected to flame class UL94
HB.
.
1.4
Hatch for accessing the control
panel
Plastic stopper to hide the
fixing screws
Grilles for outlet air in Zefiro
Series Zefiro
1.2.5 Fan assembly (GRV)
The fan assembly comprises a plate on which
the fans and the motor are installed. The motor
support brackets are damped to prevent the
transmission of vibrations. The centrifugal fan
impellers are made from aluminium and are
directly splined to the motor shaft while the
screws are made from galvanised sheet metal.
The standard single-phase motors are powered
at 230 V and 50 Hz; 60 Hz motors can also be
supplied on request.
The motors are fitted with a permanent
condenser and an automatically resettable
overload cut-out, and are protected by IP20 or 44 only on customer’s request.
The entire fan assembly is electronically balanced and can easily be removed from the fan coil unit,
independently from the other components, thereby allowing inspections and extraordinary cleaning
operations to be carried out.
The following table shows the number of fans and the diameters of the impellers for each fan unit in the Zefiro
series.
Size
308
316
320
628
634
840
847 1250 1260 1575 1885
Fan speeds wiring
Autotransformer
Slot
Nr. of fans
1
2
3
146
φ impeller [mm]
All fan assemblies feature six operating speeds, 3 pre-wired standard speeds and three alternative speeds
which can be obtained by simply changing the electrical connections.
The six speeds are obtained by using an autotransformer on Zefiro 308…1260, while for models 1575-1885 the
six speeds are directly wired to the motor winding.
1.2.6 Control box
The control box contains the electronic board and protects
terminal boards for connection to the supply mains and to
various accessories that can be installed inside it.
These electronic components can also be mounted to the
wall by appropriate plastic boxes.
The built-in box is made of galvanised sheet metal and its
top side is fixed to an ABS facade on which control devices
are inserted.
It is not necessary to disconnect the electronic connections
of the fan assembly to move the box to the opposite side.
For casing models, the control box can be accessed from
the relative hatch.
The box is fire protected to UL94HB and electrically
protected to IP41.
Zefiro fan coil serie has a number of accessories ranging
from simple speed control devices to multi-function control
devices, including automatic fan speeds control and valve
control. Please consult paragraphs 2.6.2 and 4.1 (cont.) for
further information
ABS facade
with
controls
sheet
metal
Box
Unit
flank
CSN
SATH
CONTROL
DEVICES
TOP1
1.5
Series Zefiro
1.2.7
Auxiliary drain (ADPZ)
The auxiliary drain is standard supplied on all fan coil
units; it is made in ABS, fire protected to UL94 HB; it
collects and drains the condensate formed around the valve
units.
Auxilary drain is the same for vertical and horizontal
models.
It is fitted to the fan coil side by special slots and fixed with
screws; check it has been correctly installed by spraying
some water onto side/collector gasket.
1.6
Series Zefiro
2
MODELS AND DIMENSIONS
2.1 VA - HA
casing
Models – Vertical and horizontal fan coil units with
Vertical (VA) and horizontal (HA) versions can be interchanged by simply replacing the main collector.
The construction drawings are identical (cf. par. 2.5)
Constructive features:
front/rear swivel grilles;
available in 11 sizes (308…1885);
2, 3 or 4 rows coils depending on size;
1 row separated coil for heating on
demand for all coils;
colour: plastic components RAL 9002;
metallic components RAL 9010

HA
VA
2.1
Series Zefiro
2.2
VB - HB Models - Vertical and horizontal fan coil units with casing
and accessible front air inlet
Vertical (VB) and horizontal (HB) versions have frontal air inlet obtained from added skirting board.
They can be interchanged by simply changing the main collector.
The filter is easily accessible for cleaning and maintenance through a hatch located on the lower part of the
body.
The construction drawings are identical (cf. par. 2.5)
1 row separated coil for heating can be
added on demand for all coils;
colour: plastic components RAL 9002;
metallic components RAL 9010
can be directly installed to the floor

HB
VB
2.3
VL - HL Models - Vertical and horizontal fan coil units with casing
and accessible front air inlet
The construction drawings are identical
(cf. par. 2.5)

1 row separated coil for heating can be added on demand for all coils;
colour: plastic components RAL 9002; metallic components RAL 9010
can be directly installed to the floor or to the wall.
VL
2.2
Series Zefiro
2.4
VC, VD, VE, VF, HC, HD Models – Built-in fan coil units
Zefiro Series comprises six different built-in models: four with vertical outlet and two with frontal outlet.
HC
VC
VERTICAL Suction from the bottom – Outlet from the top
HORIZONTAL Suction from the back – frontal outlet
HD
VD
VERTICAL Frontal Suction – Outlet from the top
HORIZONTAL Suction from the bottom – Frontal outlet
VE
VF
VERTICAL Suction from the bottom – Frontal outlet
VERTICAL Frontal suction – Frontal outlet
Constructive drawings are identical (cf. par. 2.5).
2, 3 or 4 rows coils depending on the size;
1 row separated coil for heating can be added on demand for all coils;
2.3
Series Zefiro
2.5
Dimensions and Weights
The following tables indicate the dimensions and weights of the various sizes of Zefiro fan coil
units..
orizzontali
verticali
PESI (kg)
Mod.
MODELLI
AD
INCASSO
MODELLI
CON
CABINET
308
14
16
316
15
17
320
16
18
628
19
22
634
20
23
840
23
27.5
847
24
29
1250
23
27.5
1260
24
29
1575
29
35
1885
29
35
308
14
16
316
15
17
320
16
18
628
19
22
634
20
23
840
23
27.5
847
24
29
1250
23
27.5
1260
24
29
1575
29
35
1885
29
35
DIMENSIONI (mm)
MOD
VA
VB
VC
VD
VE
VF
HA
HB
HC
HD
CASE
YES
YES
NO
NO
NO
NO
YES
YES
NO
NO
SUCTION
From the bottom
Frontal
From the bottom
Frontal
From the bottom
Frontal
From the back
From the bottom
From the back
From the bottom
OUTLET
From the top
From the top
From the top
From the top
Frontal
Frontal
Frontal
Frontal
Frontal
Frontal
Mod
A
B
C
308
860
518
746
316
860
518
746
320
860
518
746
628
1120
778
1006
634
1120
778
1006
840
1380
1038
1266
847
1380
1038
1266
1250
1380
1038
1266
1260
1380
1038
1266
1575
1640
1298
1526
1885
1640
1298
1526
2.4
Series Zefiro
VERTICAL
MODELS
A1 = CONDENSATE DRAIN CONNECTION ø 20mm
2.5
Series Zefiro
In case of unit without particular
controls or accessories, this quota
can be reduce to 20mm (PA104)
2.6
Series Zefiro
In case of unit without particular
controls or accessories, this quota
can be reduce to 20mm (PA104)
2.7
Series Zefiro
legenda :
: IN OUT batteria principale
: IN OUT main coil
: IN OUT hauptbatterie
: IN OUT batterie principale
: IN OUT batera principal
CONNECTIONS 1/2" FEMALE
2.8
Series Zefiro
HORIZONTAL MODELS
A1
SUCTION
ASPIRAZIONE
A1==attacco
CONDENSATE
CONNECTION
A1
scaricoDRAIN
condensa
Ø 16mm Ф 16mm
OUTLET
MANDATA
CONNECTIONS ½” Female
2.9
Series Zefiro
2.10
Series Zefiro
2.6
2.6.1
How to order
Identifying the model
An example of the code required to identify and order the selected model is shown below:
ZE 316 VA
2.6.2
SIZE
MODEL
308
316
320
628
634
840
847
1250
1260
1575
1885
VA e HA
VB e HB
VC e HC
VD e HD
VE e VF
VL e HL
SX
CSN
CONNECTIONS
SIDE
DX = right (std)
SX = left
ACCESSORIES
Consult chapter 4
of this manual or
the price list
(looking at the
machine when
installed)
Selection information
The following notes make easier to choose the right kind of fan coil unit; further details are shown in later
chapters. Please contact our technical department for further information.
a) The colour choice for the colour of the body, grilles and hatches
Standard colours are: metallic components RAL 9010 ; plastic components RAL 9002.
b) ) Choosing the position of the hydraulic connections
Unless otherwise required, the hydraulic connections are on the right of the coil (right-hand connections mean
the connections to the right of an observer looking at the front of the installed appliance).
The fan coil unit can be supplied with left-hand connections on request and at no extra charge. It is always
possible to change the position of the connections, even on location, by following the instructions shown in
paragraph 6.6.1 and in the instructions booklet supplied with each fan coil unit.
c) Choosing the size and type of coil
Chapter 3 of this manual is a guide to the choice of the size of fan coil unit depending on the thermodynamic
requirements calculated for the room in which the appliance will be installed. It describes the air/hydraulic,
thermodynamic and noise characteristics of the Zefiro appliances. There is also a selection programme for nonstandard fan coil operating conditions.
It is possible to fit heat exchangers with 2, 3 or 4 on the models installed with single feed line systems (2 pipes).
For dual feed line systems (4 pipes), in addition to the above coils it is also possible to mount an auxiliary coil
(B1) with one row (just for heating).
All coils just seen are fed by hot or cold water; direct expansion coils (BE) are also available. This type of coils
can also be combined with the one-row auxiliary coil (water).
For further details, please consult paragraph 4.2.
2.11
Series Zefiro
d) Choosing the electrical heating element EH
Alternatively to the additional coil B1, electrical heating elements (EH) made from low surface loading
aluminium, featuring manually resettable safety thermostats can be installed.
The heating elements are only mounted on coils with 2 or 3 rows, they are available with various power levels
depending on the size of the fan coil and a power interface relay (EHR) must be fitted to ensure they work
safely. This is supplied separately at an extra charge. Please consult paragraph 4.3 for further information.
f) Choosing accessories
The Zefiro range offers a wide selection of accessories which considerably increase the scope of the appliances.
The whole range is described in detail in chapter 4. Some components, divided by typology, are described
below.
Electrical accessories for operating control
In the absence of accessories, an insulated terminal board (PA104) is mounted on all Zefiro Series fan
coils in order to shunt the speeds of the fan assembly and connect the unipotential conductor (PE).
If any accessories are mounted, PA 104 should be replaced with a metal electrical panel containing
terminals (QB) or an elementary plastic box.
Zefiro fan coil units can work with accessories incorporated in the electrical control panel and with
other remote accessories installed on the wall. These can be installed on the machine; in this case, BI
should be added to the accessory order code. Further details are contained in paragraph 4.1 and the
following ones.
Hydraulic accessories
All models can be fitted with:
- 2 way/2 gate ON/OFF valves
- 3 way/4 gate ON/OFF valves
- modulating valves
Check valves (lockshields) can be installed up-line from the valve assemblies. Technical details,
assembly diagrams and order codes can be found in paragraph 4.4 and the following ones.
Other accessories
To adapt Zefiro fan coil units to the various system layouts, a wide range of various shapes and sizes
of plenums, unions, panels, grilles and accessories are available on request. The technical department
is able to design and construct other non-standard elements. (See paragraph 4.5 and the following
ones).
2.12
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.
PERFORMANCES
This chapter illustrates the performance levels of Zefiro fan coil units in their standard operating conditions. For
further operating data, please refer to the Appendix of this manual (chapter 7) or consult the selection software
that can be obtained on request.
3.1
Air Flow
The flow data contained in the following table were measured on the various sizes of fan coil units installed with
casing, delivery grilles and a clean suction filter. The dry bulb temperature and the absolute pressure of the test
room equalled 20°C and 1 atm respectively.
The special profile of the grilles, aerodynamically designed in order to obtain a low cx value, produces a
pressure drop and a consequent 3% decrease in load compared with fan coil units working without grilles.
Consequently, the built-in models (without suction grille) and the models with casing and grilles have equivalent
performance values.
The fan speeds are the three standard ones out of the six available .
Size
MAX
MED
MIN
m³/h
308
316
320
628
634
840
847
1250
1260
1575
1885
300
250
175
300
235
156
300
235
156
530
445
300
530
445
300
730
585
390
730
585
390
1130
1050
860
1130
1050
860
1310
1220
1035
1850
1600
1250
The following table indicates the air flows produced by the fan coil units with static
delivery pressure. These measurements simulate machine operation in the presence of
pressure drops caused by ducting and the like.
3.1
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
Size
Speed
1
MAX
MED
308
4
m³/h
MIN
6
1
MAX
316320
3
MED
m³/h
5
MIN
1
MAX
628634
MED
4
m³/h
MIN
6
1
MAX
840847
3
MED
m³/h
5
MIN
1
MAX
12501260
MED
MIN
m³/h
5
6
1
MAX
MED
1575
MIN
m³/h
5
6
1
MAX
MED
1885
4
MIN
6
3.2
m³/h
0
370
300
250
225
175
150
330
300
255
235
175
156
590
530
445
356
300
286
916
730
657
585
435
390
1249
1130
1050
860
636
594
1425
1310
1220
1035
822
688
2050
1850
1600
1400
1250
1050
10
348
277
224
193
126
103
308
272
228
195
129
103
549
485
398
312
242
208
866
694
607
526
364
302
1203
1088
987
803
562
492
1369
1244
1165
993
846
656
1958
1753
1522
1332
1182
984
20
325
251
196
160
69
43
284
244
199
158
83
35
506
437
351
270
183
137
812
653
560
473
303
232
1152
1042
923
749
506
434
1311
1180
1108
946
806
621
1858
1651
1441
1258
1109
915
30
299
222
164
127
Pressure [Pa]
40
50
60
270
236
196
190
151
101
129
87
32
90
45
70
136
80
90
100
258
214
168
118
32
229
182
131
72
195
146
86
158
104
29
111
53
462
390
305
226
120
72
759
606
514
428
243
168
1093
987
862
694
457
383
1250
1116
1044
898
763
579
1754
1550
1360
1184
1035
845
417
340
258
181
52
10
700
553
469
382
188
107
1027
923
800
640
412
339
1183
1052
980
845
717
534
1646
1446
1272
1105
960
771
369
290
211
134
321
239
161
81
266
185
108
208
128
143
641
499
424
339
132
51
952
852
737
588
368
295
1108
985
908
787
665
483
1530
1334
1182
1020
879
698
580
442
378
293
76
517
384
331
245
454
327
283
192
389
270
229
128
322
210
169
871
768
673
533
324
254
1030
914
832
722
607
428
1410
1222
1088
930
794
618
782
682
607
478
279
209
944
841
751
651
543
371
1281
1107
988
837
707
535
689
595
539
422
232
162
851
760
666
571
472
313
1145
986
882
736
614
460
597
510
469
364
180
108
749
670
575
483
393
254
1005
870
773
636
524
378
507
429
396
302
115
641
570
479
385
308
195
876
757
665
529
420
243
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.2
Cooling Capacity for three standard speeds
The following tables indicate the cooling capacity (total and sensible), the flow of water circulating in the coil
and the consequent hydraulic pressure drop for the various available types of coils for the various ambient
temperature and relative humidity conditions and water temperatures described.
The air flows treated by the units are described in paragraph 3.1.
Room Temperature 27 °C (B.S.) – 47%
Water Temperature 7 °C (In) – 12 °C ( Out)
SIZE
Total cooling capacity
308
Sensible capacity
Water flow rate
Pressure drop
316
Sensible capacity
Water flow rate
Pressure drop
320
Sensible capacity
Water flow rate
Pressure drop
628
Sensible capacity
Water flow rate
Pressure drop
634
Sensible capacity
Water flow rate
Pressure drop
840
Sensible capacity
Water flow rate
Pressure drop
847
Sensible capacity
Water flow rate
Pressure drop
1250
Sensible capacity
Water flow rate
Pressure drop
1260
Sensible capacity
Water flow rate
Pressure drop
1575
Sensible capacity
Water flow rate
Pressure drop
1885
Sensible capacity
Water flow rate
Pressure drop
Unit
MAX
MED
MIN
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
0,97
0,93
166,4
1,4
1,43
1.18
246.1
4.7
1.81
1.38
310.7
9.6
2.49
4.08
426.5
5.5
2.94
2.31
504.4
4.4
3.67
2.99
630.1
13.8
4.34
3.32
744
11.3
4.86
4.2
834.7
22.8
5.88
4.72
1008.3
19.3
6.82
5.48
1170.4
9.8
9.35
7.54
1603.9
21.2
0.92
0.88
157.9
0.6
1.2
1.03
205.5
2
1.51
1.16
258.7
4.2
2.2
1.83
377.9
3.4
2.58
2.02
442.5
2.7
3.17
2.65
543.9
6.5
3.71
2.84
635.7
5.1
4.65
4.05
797.8
15.9
5.6
4.52
960.7
13.4
6.5
5.25
1114.5
6.9
8.33
6.77
14428.8
13.9
0.73
0.7
125.4
0.1
0.89
0.73
152.3
0.8
1.06
0.78
182.2
1.6
1.63
1.37
280.1
1.3
1.85
1.44
317.3
1
2.35
1.87
403.8
2.6
2.68
1.98
459.4
1.9
4.08
3062
699.2
9.9
4.86
3.93
833.9
8.1
5.76
4.75
988.8
4.4
6.99
5.64
1199.1
7
3.3
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.3
Heating Capacity for three standard speeds
The following tables indicate the heat output, the flow of water circulating in the coil and the consequent
hydraulic pressure drop for the various available types of coils for the ambient temperature and water
temperature conditions described.
Main Exchanger
Room Temperature 20°C
Water Temperature 70 °C (In) - 60 °C (Out)
SIZE
316
320
628
634
840
847
1250
1260
1575
1885
3.4
MAX
MED
MIN
KW
2.62
2.3
1.79
Water flow rate
l/h
230.2
202.3
157.4
Pressure drop
kPa
2.4
1.5
0.6
Heating capacity
KW
3.43
2.84
2.05
Water flow rate
l/h
301.8
249.9
180.5
Pressure drop
kPa
5.3
2.5
0.8
Heating capacity
KW
3.95
3.24
2.28
Water flow rate
l/h
346.7
284.9
200.4
Pressure drop
kPa
9.3
4.2
1.6
Heating capacity
KW
5.94
5.19
3.8
Water flow rate
l/h
524.4
456
334
Pressure drop
kPa
Heating capacity
KW
6.2
6.81
3.8
5.9
1.4
4.24
Water flow rate
l/h
597.9
518
372.3
Pressure drop
kPa
4.9
2.9
1.1
Heating capacity
KW
8.26
7
5.05
Water flow rate
l/h
726
615.2
443.7
Pressure drop
kPa
14.1
6.5
2.4
Heating capacity
KW
9.46
7.94
5.62
Water flow rate
l/h
830.8
696.9
493.4
Pressure drop
kPa
11
5.2
1.8
Heating capacity
KW
11.43
10.83
9.32
Water flow rate
l/h
1003.8
951.8
819.1
Pressure drop
kPa
24.7
17.5
10.6
Heating capacity
KW
13.37
12.63
10.76
Water flow rate
l/h
1174.7
1109.3
945
Pressure drop
kPa
19.9
14.2
8.5
Heating capacity
KW
15.75
14.9
13.04
Water flow rate
l/h
1382.6
1307.9
1144.4
Pressure drop
kPa
10.4
7.4
4.7
Heating capacity
KW
20.71
18.51
15.2
Water flow rate
l/h
1818.2
1624.5
1333.6
Pressure drop
kPa
22.1
14.6
7
Heating capacity
308
Unit
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
Main Exchanger
Water Temperature 50 °C (In) – 43,3 °C (Out)
SIZE
Unit
316
320
628
634
840
847
1250
1260
1575
1885
MED
MIN
KW
1.52
1.34
1.08
Water flow rate
l/h
198.4
174.3
135.6
Pressure drop
kPa
1.9
1.2
0.5
Heating capacity
KW
2.02
1.67
1.21
Water flow rate
l/h
262.9
218
157.6
Pressure drop
kPa
4.4
2
0.7
Heating capacity
Heating capacity
308
MAX
KW
2.33
1.92
1.35
Water flow rate
l/h
304.4
250.3
176.4
Pressure drop
kPa
7.9
3.5
1.3
Heating capacity
KW
3.49
3.05
2.24
Water flow rate
l/h
455.7
398.1
292
Pressure drop
kPa
Heating capacity
3.1
3.48
1.1
2.51
453.7
326.4
KW
5.1
4.02
Water flow rate
l/h
523.4
Pressure drop
kPa
4.1
2.5
0.9
Heating capacity
KW
4.88
4.13
2.99
Water flow rate
l/h
635.6
538.8
389.3
Pressure drop
kPa
11.8
8.4
2
Heating capacity
KW
5.6
4.7
3.33
Water flow rate
l/h
728.9
611.9
433.8
Pressure drop
kPa
9.3
4.4
1.5
Heating capacity
KW
6.73
6.38
5.49
Water flow rate
l/h
876.8
831.7
715.9
Pressure drop
kPa
20.6
14.5
8.7
Heating capacity
KW
7.89
7.46
6.36
Water flow rate
l/h
1028.7
971.8
828.5
Pressure drop
kPa
16.7
11.9
7.1
Heating capacity
KW
9.28
8.79
7.7
Water flow rate
l/h
1209
1144
1002.2
Pressure drop
kPa
8.7
6.2
3.9
Heating capacity
KW
12.22
10.93
8.99
Water flow rate
l/h
1591.6
1423
1169.8
Pressure drop
kPa
18.4
12.1
5.7
3.5
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
Auxiliary Exchanger
SIZE
Heating Capacity
308
316
320
628
634
840
847
1250
1260
1575
1885
3.6
Unit
MAX
MED
MIN
KW
1.93
1.72
1.38
l/h
169.7
151.1
121.3
Pressure drop
kPa
5.1
3.9
3
Air flow
m³/h
300
250
175
Heating Capacity
KW
1.93
1.64
1.33
l/h
169.7
155.6
117.3
Pressure drop
kPa
5.1
3.8
2.8
Air flow
m³/h
300
235
156
Heating Capacity
KW
1.93
1.64
1.33
l/h
169.7
155.6
117.3
Pressure drop
kPa
5.1
3.8
2.8
Air flow
m³/h
300
235
156
Heating Capacity
KW
l/h
3.36
295.1
3
263.6
2.51
220.3
Pressure drop
kPa
19.1
14.6
10.8
Air flow
m³/h
530
445
300
Heating Capacity
KW
l/h
3.36
295.1
3
263.6
2.51
220.3
Pressure drop
kPa
19.1
14.6
10.8
Air flow
m³/h
530
445
300
Heating Capacity
KW
4.54
4
3.23
l/h
399
375.9
284.2
Pressure drop
kPa
6
4.4
3.5
Air flow
m³/h
730
585
390
Heating Capacity
KW
4.54
4
3.23
l/h
399
375.9
284.2
Pressure drop
kPa
6
4.4
3.5
Air flow
m³/h
730
585
390
Heating Capacity
KW
5.98
5.72
5.2
l/h
525.6
502.7
457.2
Pressure drop
kPa
9.7
8.3
6.5
Air flow
m³/h
1130
1050
860
Heating Capacity
KW
5.98
5.72
5.2
l/h
525.6
502.7
457.2
Pressure drop
kPa
9.7
8.3
6.5
Air flow
m³/h
1130
1050
860
Heating Capacity
KW
7.29
6.97
6.46
l/h
640.4
612.4
568.1
Pressure drop
kPa
16.6
14.4
11.8
Air flow
m³/h
1310
1220
1035
Heating Capacity
KW
8.62
7.41
6.88
l/h
758.1
651.9
605.4
Pressure drop
kPa
33.5
27.5
20.5
Air flow
m³/h
1850
1600
1250
Water Flow rate
Water Flow rate
Water Flow rate
Water Flow rate
Water Flow rate
Water Flow rate
Water Flow rate
Water Flow rate
Water Flow rate
Water Flow rate
Water Flow rate
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.4
Cooling capacity of the direct expansion coils
The following tables indicate the cooling capacity (total and sensitive) of the direct expansion units for different
temperature and relative humidity conditions.
Room Temperature 27 °C B.S. – 47%
Cooling Gas : R407c
Evaporation Temperature 6 °C
SIZE
308
Sensible capacity
Water flow rate
Pressure drop
316
Sensible capacity
Water flow rate
Pressure drop
320
Sensible capacity
Water flow rate
Pressure drop
628
Sensible capacity
Water flow rate
Pressure drop
634
Sensible capacity
Water flow rate
Pressure drop
840
Sensible capacity
Water flow rate
Pressure drop
847
Sensible capacity
Water flow rate
Pressure drop
1250
Sensible capacity
Water flow rate
Pressure drop
1260
Sensible capacity
Water flow rate
Pressure drop
1575
Sensible capacity
Water flow rate
Pressure drop
1885
Sensible capacity
Water flow rate
Pressure drop
Unità
MAX
MED
MIN
W
W
l/h
kPa
W
W
l/h
kPa
W
W
l/h
kPa
W
W
l/h
kPa
W
W
l/h
kPa
W
W
l/h
kPa
W
W
l/h
kPa
W
W
l/h
kPa
W
W
l/h
kPa
W
W
l/h
kPa
W
W
l/h
kPa
1040
950
182
4
1420
1150
246
6,4
1800
1350
310
12,9
2480
2010
428
7,5
2930
2260
505
6,0
3650
2900
629
18,8
4320
3260
744
15,2
4850
4040
837
31,1
5850
4610
1010
26,1
6790
5340
1171
13,2
7730
6070
1340
15
890
780
153
2.8
1190
940
205
4,6
1490
1100
257
9,3
2190
1750
378
6,0
2560
1950
442
4,8
3130
2440
540
14,4
3660
2720
632
11,4
4630
3820
799
28,6
5570
4350
961
23,9
6460
5050
1115
12,1
7350
5750
1274
13
610
550
106
1.9
830
670
145
2,5
1070
790
184
5,2
1620
1300
280
3,5
1840
1410
318
2,7
2320
1800
401
8,5
2660
1960
459
6,5
4070
3430
702
22,8
4850
3830
837
18,7
5750
4570
993
9,9
6650
5310
1135
10.5
3.7
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.5
Pressure drops in exchangers
The following graphs indicate the hydraulic pressure drops of the coils. The figures were measured with an
average inlet water temperature of 10 °C. To calculate the pressure drops through the coils with water
circulating at a different temperature, multiply the pressure value calculated for a certain load by the relative
correction factor shown in the following table.
K corrective factor ∆P
Middle temp. Water
Main exchanger
Auxiliary Exchanger
3.8
°C
1,1
1
0,94
0.88
0.87
0.85
0.82
0.79
0.775
0.75
0.74
0
10
20
30
40
50
60
70
80
90
100
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.6
Water content of the coils
The following table shows the data relative to the water content of the coils mounted on
the various sizes of fan coil unit.
Size
308
316
320
628
634
840
847
1250
1260
1575
1885
Main Exchanger
Row content
l
0,14
0.256
0.256
0.397
0.397
0.54
0.54
0.54
0.54
0.683
0,82
Main Exchanger
Circuit content
l
0,28
0,768
1,024
1,191
1,588
1,62
2,16
1,62
2,16
2,732
3,28
Additional row
l
0,256
0.256
0.256
0.397
0.397
0.54
0.54
0.54
0.54
0.683
0,82
3.7
Electrical characteristics of motors
The following table indicates the power consumption figures of the standard motors mounted in the fan
assemblies of the fan coil units powered at 230 V and 50 Hz. These figures were measured at maximum
standard speed, with the fan coils fully operating, with delivery grilles and casing mounted and suction
filter clean with zero static operating pressure.
Size
308
316
320
628
634
840
847
1250 1260 1575 1885
Power Input
W
28
28
32
43
44
87
95
136
136
147
184
Nominal Current
A
0,12
0,12
0,15
0,19
0,19
0,38
0,42
0,6
0,6
0,68
0,82
RPM
n.
597
621
726
621
671
742
747
1049 1102 1170 1163
3.9
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.8
NOISE EMISSION
3.8.1
Power sound level by octave band
The power irradiated by a noise source is a measurement that is characteristic of the source itself and is not
affected by external factors such as the place, distance and ear of the listener.
The irradiated power is measured at various frequencies (octave bands). The total power in dB(A) is measured
by applying special mathematical formulas to the measured data.
The following figures were the results of tests performed in a reverberation room certified according to the
provisions of ISO 6926. The test instruments and procedures complied with the provisions of ISO 3741.
The level of sound power of all the fan coils was determined for each operating speed as prescribed by ISO
3741, using the reference source comparison method.
All the appliances were tested simulating real operating conditions, that is, with all their components fitted
(delivery grilles, suction filter and casing).
Power sound level Lw
Size
308
316
320
628
634
840
847
1250
1260
1575
1885
3.10
[Hz]
125
250
500
1000
2000
4000
8000
TOT
[dB(A)]
MAX
34,3
38,2
38,4
32,0
26,2
16,6
11,3
43,0
39,0
MED
32,6
35,0
34,5
27,8
20,8
11,5
11,4
MIN
28,5
28,4
24,4
9,1
7,1
7,2
10,2
29,0
MAX
34,5
38,5
37,6
32,6
25,5
17,3
12,2
43,0
37,0
MED
29,5
32,6
30,5
24,4
15,3
15,3
10,2
MIN
24,3
25,4
20,3
1,1
9,2
13,3
10,2
29,0
MAX
35,6
41,7
42,6
37,7
31,6
22,3
13,3
47,0
MED
31,4
36,5
34,6
29,5
20,3
9,3
9,2
41,0
MIN
28,5
29,4
24,5
16,3
6,1
5,2
14,3
31,0
MAX
36,5
41,6
42,6
35,5
30,5
19,4
13,2
46,0
MED
33,5
37,7
38,6
31,5
25,5
15,3
12,3
43,0
32,0
MIN
29,5
32,4
28,4
19,3
17,2
13,3
13,3
MAX
36,6
40,7
41,7
36,5
30,5
18,3
14,3
47,0
MED
33,6
38,5
38,6
33,5
26,4
14,2
12,3
44,0
MIN
29,5
32,5
29,4
20,4
12,2
6,2
12,2
35,0
MAX
39,6
45,7
47,6
40,6
39,7
27,5
15,3
51,0
MED
33,5
39,6
38,6
35,5
26,4
14,3
9,3
44,0
MIN
26,4
33,5
28,4
22,4
10,3
4,2
10,2
34,0
MAX
39,7
45,7
46,8
40,6
37,6
26,4
15,3
51,0
MED
34,5
39,6
38,5
35,5
25,5
15,3
11,3
45,0
34,0
MIN
28,5
35,5
28,4
22,4
16,3
11,3
11,2
MAX
48,7
53,8
53,8
50,7
49,7
43,6
33,5
61,0
MED
45,7
50,8
50,7
46,7
47,7
38,5
26,5
58,0
MIN
42,6
47,7
48,7
42,7
44,7
32,5
20,4
55,0
MAX
48,8
54,7
54,7
50,7
49,7
42,6
31,5
61,0
MED
45,7
51,7
51,8
46,8
46,7
37,5
25,5
58,0
MIN
42,6
48,7
49,8
43,6
43,6
32,6
20,3
54,0
MAX
51,8
57,8
57,9
54,7
53,7
47,7
38,6
64,0
MED
48,7
54,8
55,8
50,8
50,8
43,7
33,6
62,0
MIN
44,7
51,7
51,8
47,6
47,7
38,6
27,5
59,0
MAX
52,8
57,9
57,8
54,9
52,8
49,7
39,6
63,0
MED
46,8
51,8
51,8
47,8
47,7
38,5
28,4
58,0
MIN
43,7
48,7
49,8
43,7
44,7
32,5
22,4
53,0
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.8.2 Pressure Noise Level in a closed room
Pressure noise level is the perception that a person has in the presence of a noise source. It depends on
the volume of the room in which the sound propagates, the distance of the listener from the source of the
sound and the acoustic reflections in the room (retransmission of energy). It is clear that covering the
walls with sound-absorbing material (curtains, wallpaper, etc.) reduces the reflecting effect and therefore
reduces sound pressure.
The following pressure figures are calculated starting from the sound power measured, supposing that
the fan coil unit is installed in a 100 m³ room, the reverberation time is 0.3 s, and the distance of the
observer from the fan coil unit is equal to 1.5 m; a reflecting wall near the appliance is also considered.
Although the results of the calculation are borne out by experience, they are not measurements and are
therefore indicative. For special requirements, please consult a specialised technician.
Sound pressure level at 1,5 m from the unit, at min. std speed in a room of 100 m3, reverberating time 0,3 s, with one reflecting adjacent surface to the unit
Sound pressure Lp
Size
308
316
320
628
634
840
847
1250
1260
1575
1885
[Hz]
125
250
500
1000
2000
4000
8000
TOT
[dB(A)]
MAX
25,9
29,8
30,0
23,6
17,8
8,2
2,9
34,6
MED
24,2
26,6
26,1
19,4
12,4
3,1
3,0
30,6
MIN
20,1
20,0
16,0
0,7
-1,3
-1,2
1,8
20,6
MAX
26,1
30,1
29,2
24,2
17,1
8,9
3,8
34,6
MED
21,1
24,2
22,1
16,0
6,9
6,9
1,8
28,6
MIN
15,9
17,0
11,9
-7,3
0,8
4,9
1,8
20,6
MAX
27,2
33,3
34,2
29,3
23,2
13,9
4,9
38,6
MED
23,0
28,1
26,2
21,1
11,9
0,9
0,8
32,6
MIN
20,1
21,0
16,1
7,9
2,3
3,2
5,9
22,6
MAX
28,1
33,2
34,2
27,1
22,1
11,0
4,8
37,6
MED
25,1
29,3
30,2
23,1
17,1
6,9
3,9
34,6
MIN
21,1
24,0
20,0
10,9
8,8
4,9
4,9
23,6
MAX
28,2
32,3
33,3
28,1
22,1
9,9
5,9
38,6
MED
25,2
30,1
30,2
25,1
18,0
5,8
3,9
35,6
MIN
21,1
24,1
21,0
12,0
3,8
-2,2
3,8
26,6
MAX
31,2
37,3
39,2
32,2
31,3
19,1
6,9
42,6
MED
25,1
31,2
30,2
27,1
18,0
5,9
0,9
35,6
25,6
MIN
18,0
25,1
20,0
14,0
1,9
-4,2
1,8
MAX
31,3
37,3
38,4
32,2
29,2
18,0
6,9
42,6
MED
26,1
31,2
30,1
27,1
17,1
6,9
2,9
36,6
MIN
20,1
27,1
20,0
14,0
7,9
2,9
2,8
25,6
MAX
40,3
45,4
45,4
42,3
41,3
35,2
25,1
52,6
MED
37,3
42,4
42,3
38,3
39,3
30,1
18,1
49,6
46,6
MIN
34,2
39,3
40,3
34,3
36,3
24,1
12,0
MAX
40,4
46,3
46,3
42,3
41,3
34,2
23,1
52,6
MED
37,3
43,3
43,4
38,4
38,3
29,1
17,1
49,6
45,6
MIN
34,2
40,3
41,4
35,2
35,2
24,2
11,9
MAX
43,4
49,4
49,5
46,3
45,3
39,3
30,2
55,6
MED
40,3
46,4
47,4
42,4
42,4
35,3
25,2
53,6
50,6
MIN
36,3
43,3
43,4
39,2
39,3
30,2
19,1
MAX
44,4
49,5
49,4
46,5
44,4
41,3
31,2
54,6
MED
38,4
43,4
43,4
39,4
39,3
30,1
20,0
49,6
MIN
35,3
40,3
41,4
35,3
36,3
24,1
14,0
44,6
3.11
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.8.3
Variation in sound pressure depending on the volume of the room and
the reverberation time.
The following graph allows the variation in sound pressure to be evaluated according to the size of a
room and the sound-absorbency of its walls at an observer distance of 1.5 m. A low reverberation time
equals a high level of sound-absorbency.
The values in dB(A) obtained are added, as a correction, to those shown in the previous table
3.8.4
Variation in sound pressure according to distance
Sound pressure varies depending on the distance of the observer from the sound source; the larger the
volume of the room the higher this variance is. Considering a 100 m³ room, the following graph allows
the pressure values added as a correction to those shown in the table in paragraph 3.8.2 to be calculated.
3.12
_______________________________________________________________________________________________________________________________ ____________________________________________________________________________________________________________
Series Zefiro
3.8.5
Noise curves (NR)
The noise level of the appliance is often expressed using the NR index that considers the fact that a noise
level may be more or less noticeable depending on the frequency at which it is emitted.
Ventilation noise generally features frequencies of around 500÷2000 Hz.
Noise, or equal disturbance, or isoauditive curves are calculated from the data in table 3.8.2; these can be
used to find the values of NR in the reference conditions.
Size
NR
308
316
320
628
634
840
847
1250
1260
1575
1885
MAX
27
27
29
29
29
33
33
42
42
45
47
MED
20
15
20
24
24
25
25
40
40
43
45
MIN
10
9
9
12
14
14
14
37
37
40
37
As regards rooms with different characteristics, after recalculating sound pressure with the help of
correction graphs, the new value of NR can be found by placing the figures obtained in the following
graph.
3.13
Series Zefiro
4.
ACCESSORIES AND VARIANTS
Zefiro Series fan coil units have a wide range of accessories and variants which make them extremely
versatile and adaptable to the most varied operating and installation requirements. All the currently
available accessories and variants are described as follows. The company can also study the most suitable
solutions for special requirements
4.1
4.1.1
Operating control devices
TM
TM is a minimum temperature thermostat which
prevents fan starting before the water circulating
in the exchanger has reached a minimum pre-set
temperature. The room will only be ventilated
when it is possible for the air to be heated
sufficiently, thereby eliminating that unpleasant
“cold sensation” while the coil feed valves are
being opened.
The bimetallic thermostat is mounted directly onto
the fins of the coil with special clips. The electrical
contacts are protected by a special cable featuring
a sheath and a shaped terminal for housing the
thermostat.
Technical specifications
Opening temperature:
Closing temperature:
Load of contacts:
24 ± 3 °C
35 ± 3.5 °C
5 A – 250 V AC1
Note: the accessory is not avaiable in case of Top1 HP and TOP1 0/1V HP control
4.1
Series Zefiro
4.1.2 ELMZ :
Device for driving various fan coils with single command.
It consists on three relay, each one for an operation speed.
Terminal boards and relays are assembled on printed circuit.
Maximum absorbed power for each motor has to be inferior to 150 W.
ELMZ must be bound together to one of the control devices later described on
this manual.
Technical characteristics ( for one relay)
Contacts Charact.
Nominal Current:
Max commutable voltage:
Nominal Current Carrying Capacity in AC1:
16 A
400 Vac
4000 VA
Bobbin Charact.
Input Rated Voltage:
Rated output:
230V/50-60Hz
1,2 VA
NOTES
−
−
Guaranteed modularity until 100 pieces;
It can be only built-in type
•
Terminal on inferior side for easier wiring
•
Double-face board with terminals to facilitate optimal side for wiring
4.1.3 Instructions to install the wall controls
For a correct installation of the control to the wall, it is advisable to use an electric box for surface wallmounting (Max 100 X 55mm) to make the wiring connection quickly and to use the pins supplied in kit.
Sample of electric box for flush wall-mounting.
4.2
Sample of a
predisposition.
correct
wiring
connection
Series Zefiro
4.1.4
CSN:
CS-NN
CSN-BI
CSN drives only one fan.
ELMZ is the device for driving various ventilators.
CSN manually controls the three running speeds of fan.
First wiper permits to select running speed, the second one has three positions, OFF in central position and
Summer/Winter mode set to give logic to minimum temperature thermostat TM, that can be optionally inserted.
Technical Characteristics
Power supply:
Maximum commutable current:
Usable temperature limits
Usable humidity limits
Protection degree
Minimum temperature thermostat
Color
Dimensions CS-NN[mm]
230 ± 10% V – 50/60 Hz AC
5A
0-50 °C
10-90 % RH (in not saturated environment)
IP 40
Mechanical N.A.
RAL 9002
140 x 75 x 34
NOTES
− It can be built-in type or wall-mounted type
− TM can be cut out by new jumper
For more information, refer to the technical sheet inside the packaging
4.3
Series Zefiro
4.1.5 SATH:
Electronic room thermostat , with manual speed selector and valve/s control
SATHN
SATH-BI
SATH is an electronic room thermostat, with manual speed selector. Electronics guarantees reliability and
accuracy. The terminal board of electric terminals is preset to connect minimum temperature thermostat TM
(optional) to a probe set on the unit suction in order to install the thermostat into the machine build-in.
SATH drives only one fan. ELMZ device is required to drive various fans.
Operation logics
thermostatic control only on ventilation of valveless units
Control of input valve of heat exchanger (fan always in function – suitable solution for systems with only
a feeding line of fan coils)
Control of two input valves of two heat exchanger with hot and cold water flow (fan always in function –
suitable solution for systems with two separated feeding lines of fan coils);
Control of input valve of cold exchanger and electric resistance EH substitutive of hot coil (fan always in
function)
NOTE In case of use of electric resistance EH is necessary to order separately a power relay (see company code
EHR)
Device includes:
-
-
Selector summer/OFF/Winter
Selector of three running speeds
Handle control for environmental temperature setup
Technical characteristics
Power supply:
Maximum dissipated power:
Temperature setting range:
Temperature sensor:
Differential operating:
Relay contact:
Usable temperature limits.
Usable humidity limits:
Protection degree (Level):
Minimum temperature thermostat:
Color:
Dimensions [mm] SATHN :
4.4
230 ± 10% V – 50/60 Hz AC
1 VA
5-30 °C
NTC 10K 25° 1%
0,5 °C
5A,250 V AC resistive
0-50 °C
10-90 % RH (in not satured envinronment)
IP 40
Mechanical N.A.
RAL 9002
140 x 75 x 34
Series Zefiro
NOTE In case of use of electric resistance EH is necessary to order separately a power relay (see Company code
EHR)
NOTES
It can be built-in type or wall-mounted type
It drives simultaneously two valves (cold+hot) or cold valve and electrical resistance (cold+EH)
The electric resistance control is not give by direct command
Note: it is always advisable to use the valve. In case of no valve installed and in case of built-in control,
please check if the room probe fixed in the suction of the unit, doesn’t be influenced by the hot or cool
water present in the coil. If it happens, the probe must be placed in a better position
4.5
Series Zefiro
4.1.6
TOP1:
Electronic room thermostat with three speeds manual or automatic selector and summer/winter operation mode
selector
A) valve on/off configuration – “TOP1”
TOP-1N
TOP1-BI
TOP1 is an electronic room thermostat for fan coils with automatic or manual selector of three running speeds and
summer/winter operation mode selector. It is a complete, reliable and accurate device.
The set up temperature corresponds to maximum value of neutral zone. When room temperature is higher than
set point, conditioning circuit starts running. Otherwise if environmental temperature is lower than minimum
temperature value of neutral zone, heating circuit is activated.
Using a deep switch, inside of the machine, is possible to change the amplitude of action neutral zone from 2°C
(default value) to 5°C.
Operating differential between two speeds is equivalent to 1°C; hysteresis on every step is equivalent to 0.5°C.
Fan switches off when demanded temperature is attained, and at the same time input valve of exchanger turns
off.
Moreover, by opening of a contact, the device makes possible to enlarge amplitude of neutral zone until 8°C
during Sleep Mode (economy).
The terminal board of electric terminals is preset to install a minimum temperature thermostat TM (optional)
TOP1 can be built-in type, when required, if previously an appropriate probe is set into unit suction.
The control, off-the-shelf, can delay the moment in which heating mode fan switches off. So it avoids room air
stratification.
TOP1 can drive only one fan. ELMZ device is necessary in order to drive various fans.
Operation logic:
Control of input valve of exchanger ( suitable solution for systems with only one feeding line of fan coils)
Control of two input valves of two exchangers with hot and cold water flow (suitable solution for systems
with two separated feeding lines of fan coils)
Control of input valve of cold exchanger and electric resistance (EH) substitutive of hot coil.
Manual or automatic speed selector depending on difference between room temperature and set one
Device includes:
Selector ON/OFF
Four steps button for fan speed selection: minimum, medium, maximum, automatic speed
Handle control for room temperature setting
B) Modulating valves configuration - ”TOP 1 – 0/10V”
It differs from TOP1 model for the possibility to drive modulating valves powered by 24 V AC.
4.6
Series Zefiro
It will be necessary to use a transformer as company code TR24 code (alternate voltage output).
It’is also possible to realize, on request, the configuration for electric resistance.
This TOP1 version makes possible to control additional electric resistance EH power on/off (remind:a relay is
required; see EHR company code).
When this solution is adopted, is not possible to drive modulating valves
C) model for heat pump - ”TOP1-HP”
In 2 pipes system, it differs from TOP1 model for the change over temperature as follow:
Cooling: temperature water to the inlet pipe low than 18 +/-3 degrees
Heating: temperature water to the inlet pipe up than 28 +/-3 degrees.
Using this control, it is not possible to use TM minimum temperature thermostat to be fixed on the
heating coil
D) model for heat pump - TOP1 0/10V HP
In 2 pipes system, it differs from TOP1 model for the change over temperature as follow:
Cooling: temperature water to the inlet pipe low than 18 +/-3 degrees
Heating: temperature water to the inlet pipe up than 28 +/-3 degrees.
Using this control, it is not possible to use TM minimum temperature thermostat to be fixed on the
heating coil
Technical characteristic
version A ) C) ⇒ Power supply 230 ± 10% V – 50/60 Hz AC. Output valve ON/OFF 230 V 50/60Hz AC.
version B) D) ⇒ Power supply 230 ± 10% V – 50/60 Hz AC. Output modulating valves 0-10 V DC.
Maximum dissipated power
1 VA
7-30 °C
Adjustable Neutral zone
2 o 5 °C
Temperature sensors:
NTC 10k 25°C 1% (coo: Twater<18+/-3°, heat: Twater>35+/-3°)
Usable temperature limits:
0-50 °C
Protection degree :
IP 40
Speed and valves
Differential operating :
0,5 °C
Thermic Differential for
speed selection:
1 °C
Minimum temperature thermostat : Mechanical N.A.
Input E/I for 2way system : NTC Probe
Input Economy commutation:
N.A. contact
Input cable and probes
Maximum length:
50 m sez. min. 0.5 mm2
Color:
RAL 9002
Dimensions remote control[mm] : 140 x 75 x 34
NOTES
It can be built-in or wall-mounted type
It drives two probes and TM (not TOP1 HP version)
It automatically controls running speed
Default control is set on the air, but it can be set on the water
Appropriate deep switches have to be set to distinguish 2-ways system from 4-ways one
Note: it is always advisable to use the valve. In case of no valve installed and in case of built-in control,
please check if the room probe fixed in the suction of the unit, doesn’t be influenced by the hot or cool
water present in the coil. If it happens, the probe must be placed in a better position
4.7
Series Zefiro
TOP1 - Normal Working
SUM M ER
M O DE
W INTER
M O DE
O perating
differential
R oom Tem p.
N eutral Zone
2°C
TOP1 - Economy Working (amplitude of neutral zone)
SUMMER
MODE
WINTER
MODE
Operating differential
Room temp.
NEUTRAL ZONE
4.8
Series Zefiro
4.1.7 MCS
MCS (Multi Control System) includes an electronic board with microprocessor that can be connected indifferently
to:
- an infrared receiver (IRP) for an infrared remote control (IRT),
-an external regulator (ETN)).
-a built- in regulator (FMH)
ETN and FMH controllers also include an infrared receiver for the infrared remote controller IRT.
The electronic board controls also the fan starting in heating mode with a water temperature input fixed at 32°C
set point through the thermostat installed onto the water coil
Remote control allows to fix a timer for daily ON/OFF
Possible versions are:
MCS01
Infrared control MIGA + IRT + IRP
MCS02
Infrared control MIGA + IRT + ETN with wall thermostat
MCS03
Infrared control MIGA + IRT + FMH with built-in thermostat
MCS04
Digital control MIGA + ETN with wall thermostat
MCS05
Digital control MIGA + FMH with built-in thermostat
Operation logics:
-
-
Control of input valve of exchanger (fan always in function – suitable solution for
systems with only one feeding line of fan coils)
Control of two input valves of two exchangers with hot and cold water flow (fan always
in function – suitable solution for systems with two separated feeding lines of fan coils)
Control of input valve of cold exchanger and electric resistance (EH) substitutive of hot
coil (fan always in function)
Manual or automatical speed selector depending on difference between room
temperature and set one.
Technical characteristics
Power supply:
230 ± 10% V – 50/60 Hz AC
Maximum dissipated power:
1 VA
10-30 °C
Usable temperature limits.
0-50 °C
Differential operating of speeds and valves:
0,5 °C
Differential Thermal operating for speed selection: 2° C
4.9
Series Zefiro
4.10
Series Zefiro
4.1.8 AS
•
Alarm Signal is an electronic control, which allows a remote monitoring of the correct working of air
conditioning units motor..
It is a compact accessory, which can be easily added to any type of thermostat and/or regulation
Therefore it is appropriate for a quick identification of the fault unit, where the motor doesn’t work even if the
air conditioning unit is powered..
The contact of the alarm signal can be normally open or normally closed
On the control two led (one red and one green) indicates for the working state
•
•
•
•
For other information, please see chapter 5.
4.1.9 SUPPLY NOTES
-
For every control, device remote kit version is available.
In that case electrical terminals must be wired by installer. Board is predisposed to fix terminals. Use of
different colours will facilitate wiring operations.
Probes are NTC10KOhm (Negative Temperature Coefficient) type.
Board is predisposed both for left and right machine type.
4.11
Series Zefiro
4.2
Heat Exchanger
Zefiro basic model foresees the use of a single 2,
3 or 4 rows coil depending on size, which can be
fed by hot or cold water dependent of heating or
cooling mode
The company offers, if required, direct expansion
exchangers fed by R407c, R134a cooling gas
In addition to main coil an auxiliary heat exchanger can be required only for
heating mode.
Please remember that the lower the temperature (< 8 °C) of the water to the conditioning coils is, the more
efficient, as a dehumidifier, the exchanger is.
High feed water coils temperatures in heating mode are advised if there are air inlet and forced air refill
Moreover it is possible to have air cooling without dehumidification feeding coils by water at 10-15°C and
room temperature between 20° and 24°C
4.2.1 Direct expansion exchangers BE
Zefiro fan coil units can use a direct expansion coil
fed with R134a or R407 C. The connections to the
coolant supply line comprise stubs of copper
piping of a diameter which varies according to the
size of the coil (see table below)
Also in this case, a 1-row battery fed by hot water
with a heating or post-heating function can be
added.
A fan coil unit with the direct expansion coils and
the additional 1-row coil can condition a room
instead of the pre-existing radiator, using the same
centralised heating system and a new condensing
unit for conditioning.
Dimensions connection pipes:
IN (liquid)
mm
OUT (gas)
mm
4.12
308÷847
12
16
1250÷1885
16
22
Series Zefiro
4.3
Electric Heater EH
The electric heater EH is an alternative to the
additional 1-row coil
The electric heater comprises a core made from
suitably conductive material inserted inside an
aluminium structure with folded fins in order to
maximise heat exchange efficiency with the forced
air.
This type of electric heater, unlike the
incandescent wire type, does not have problems of
electrical dispersion and there is therefore no
danger of electric shocks deriving from accidental
contact; it is also tougher and more effective. A
power relay (EHR) must be used to connect the
electric heater to the control systems of the fan
coil unit. The company declines responsibility for
malfunctions caused by the absence of this
device.
When the supply of the power relay (EHR) is not requested, the input cables of the heating element are
connected to the terminal board of the basic panel QB; the fitter is responsible for connecting them to a
suitable power relay and to the fan coil unit control systems.
A manually resettable safety thermostat is fitted on each element of the electrical heater.
The heat output of this heater is suitable for heating rooms in spring and autumn, for integrating heat
pumps or for post-heating of fan coil units working in the conditioning mode.
The technical characteristics of the heating elements depending on the size of the fan coil unit are
indicated in following table
Size
308/316/320
628/634
840/847/1250/1260
1575/1885
Power STD
[ W]
1000
1250
2000
3000
Safety thermostats
operating temperatures
200 °C
200 °C
230 °C
230 °C
4.13
Series Zefiro
4.4
Regulation Valves
4.4.1
Valve body
The valves are used to adjust the flow of hot and chilled air; there are two types of valve: 2 way/2 gate and 3
way/4 gate
In order to keep the overall pressure drop of the system as constant as possible 3 way/4 gate valves should
be used.
2 way/2 gate valves
The valves are all normally closed; when the actuator is excited, the position of the valve stem changes to
allow it to open. The rubber plug offers a perfect seal.
Connectors:
Adjustment:
Operating pressure:
Permitted fluids:
Kvs:
GM ½” Zefiro (308 ÷ 847)
GM ¾” Zefiro (1250 ÷ 1885)
Conical beat
linear
1000 Pa max (10 bar)
water (2÷95 °C)
water with glycol
max. 50%
1.6 (sizes 308-847 and all B1 coils)
2.5 (sizes 1250÷1885)
3 way/4 gate valves
The valves are all normally closed and the water by-passes the fan coil unit, while when the actuator is
excited the position of the valve stem changes to allow it to open.
The plug offers all the models used a perfect seal both on the direct and the corner way. The use of valves
with different loss coefficients depending on the size of the fan coil unit, allows pressure drops of less than 3
m water column to be obtained. The valves can be ON/OFF or modulating.
Connectors:
GM ½” Zefiro (308÷847)
GM ¾” Zefiro (1250-1885)
Conical beat
Adjustment:
linear
Operating pressure:
1000 Pa max (10 bar)
Permitted fluids:
water (2÷95 °C)
water with glycol
max. 50%
Kvs:
1.6 (size 308÷847 and all B1 coils)
2.5 (size 1250÷1885)
4.14
Series Zefiro
4.4.2
Actuators
There are 3 types of actuators: one of the ON/OFF valve and the other two for the modulating valve (only
available for the 3 way/4 gate valve).
The ON/OFF actuator opens the valve by heating a thermostatic element which moves a small piston which
raises or lowers (depending on the type of valve mounted) the valve system.
The modulating valve stem, instead, is moved by a train of gears.
Technical features
ON OFF actuator
Power input:
Consumption:
Stroke time:
Thrust on plug:
Operating temperature:
Protected to:
MODULATING actuator (linear mode)
Power input:
Consumption:
Control:
Stroke time:
Operating temperature:
Protected to:
4.4.3
230 ± 10% V – 50/60 Hz AC
3.0 VA operating
<0.70 A starting
opening 3,5 mins
closing 4 mins
100N
0…50 °C
IP40
24 ± 10% V – 50/60 Hz AC
3.5 VA
0 ...10 V
opening 4,5 mins
closing 4,5 mins
0…50 °C
IP40
Assembly kit and lockshields
The valves are fixed to the fan coil unit using an
assembly kit comprising copper pipes and brass
unions. The unions are sealed with dedicated
seals resistant to wear and atmospheric and
chemical agents. The kit has been designed to be
used on all the fan coil units (horizontal, vertical,
built-in or with casing).
The condensate which forms on the metal parts of
the kit fed with cold water for conditioning is
collected by the auxiliary collector and drained into
the main condensate collector of the fan coil unit.
Lockshields can be installed down-line from the adjustment valves (with prior agreement and at an extra charge);
these comprise zero pressure drop check valves which isolate the fan coil unit from the rest of the system
4.15
Series Zefiro
The assembly of the valves on the fan coil unit comprises:
-
mechanical connection of the valves to the
exchangers using the kit;
testing (pressurising the system to 8 bars and
checking it is tight);
fixing actuators to the valve and connecting
them to the electrical panel.
Notes:
The lock shields are supplied separately on explicit request and are
not mounted.
The valve kit may also be ordered separately, dismounted; please
remember to specify whether the valves are right or left when
ordering (referring to an observer standing in front of the fan coil
unit). The codes for ordering just the kit supplied dismounted are:
- V23K 1 ON/OFF valve + connectors;
- V43K 2 ON/OFF valves + connectors
4.4.4
Table of available accessory combinations
The following table shows the codes to use when ordering the various layouts of valves mounted on the fan
coil unit. The table also shows the description of the various layouts of the valve bodies and of the
available electronic and electromechanical control systems. Please refer to paragraph 4.1 for the various
kinds of operating logic.
Code
Configuration description
V22 (*)
one 2 way/2 gate ON/OFF valve, for 2-pipe system (1 coil feed line)
V42 (*)
two 2 way/2 gate ON/OFF valves, for 4-pipe system (2 coil feed lines)
V23 (*)
one 3 way/4 gate ON/OFF valve + kit, for 2-pipe system (1 coil feed line)
V43 (*)
two 3 way/4 gate ON/OFF valves + kit, for 4-pipe system (2 coil feed lines)
V23+DET2
one 3 way/4 gate ON/OFF valve + kit + 2 lock shields, for 2-pipe system (1 coil feed line)
V43+DET4
two 3 way/4 gate ON/OFF valves + kit + 4 lock shields, for 4-pipe system (2 coil feed lines)
V23M
one 3way/4gate MODULATING valve + kit, for 2 pipes system (1 coil feed line)
V43M
V23M+DET2
two 3way/4gate MODULATING valve + kit, for 4 pipes system (2 coil feed lines)
one 3 way/4 gate MODULATING valve + kit + 2 lock shields, for 2-pipe system (1 coil feed line)
V43M+DET2
Two 3 way/4 gate MODULATING valves + kit + 2 lock shields, for 4-pipe system (2 coil feed lines)
(*)
Versions available with separated kit (V22 K -V42 K - V23 K - V43 K)
DET 2 / DET 4
Lock shields for 2 and 4 pipes
Control device
Layouts
CSN
-
-
-
-
V23+
DET2
-
SATH
•
•
•
•
•
•
TOP1
•
•
•
•
•
•
-
-
-
-
TOP 1 – 0/10 V
-
-
-
-
-
-
•(**)
•(**)
•(**)
•(**)
MCS
•
•
•
•
•
•
•(**)
•(**)
•(**)
•(**)
V22
• supplied
V42
V23
- not supplied
** Available if required with extra charge.
4.16
V43
V43+
DET4
-
V2M
V4M
-
-
-
-
V2M+
DET2
-
V4M+
DET4
-
Series Zefiro
4.5
System accessories
The constant attention to the problems connected to fan coil units installation induced the company to offer a
wide range of plenums, unions and accessories of various shapes and functionalities. Their use makes
Zefiro series fan coils extremely versatile and adaptable to the most varied requirements. The accessories
currently available are described below; the company technical department is able to design and construct
other non-standard elements. All the accessories are supplied separately at an extra charge.
4.5.1
CZ - Pair of feet
This pair of feet comprises 4 parts: two brackets
for the fan coil unit support, and two
asymmetrical parts which follow the profile of the
casing. The pair of feet can be mounted on all
models with casing in order to conceal the
electric cable, system piping and condensate
drain when these come out of the floor or the
wall. The free area between the feet allows the
fan assembly to be accessed and inspected after
first removing the filter.
Colour: STD RAL 9002
Heigt from ground: 100 mm
4.5.2
CZF - Plinth with openable hatch
The plinth comprises two
symmetrical side feet to which
a hatch is hinged. It features
ventilation grilles and must be
opened to remove the filter.
The hatch is kept in place by a
push push system of opening.
Heigt by ground :100 mm
Openable hatch
4.17
Series Zefiro
4.5.3
PAE/V, PAE/H - External air shutters for vertical and horizontal models
The external air shutters allow the air flowing into the
room to be adjusted.
The percentage of fresh air can vary from 0 to 100% of
the delivery air.
Generally speaking, in public areas, the quantity of
fresh air should be equal to 30 m3/h per person.
The shutter is normally adjusted manually but it may
also be powered.
This second solution should be provided by the fitter;
the company has dedicated servomotors (PAEM) that
can be supplied separately for an extra charge.
The shutter must be mounted together with
the pair of feet (CZ), or alternatively with
the plinth (CZF).
As it can be seen in the photos, the shape of
the shutter changes between vertical or
horizontal version of fan coils: narrow for
the horizontal model (PAE/H), wide for the
vertical one (PAE/V).
Colore: STD RAL 9010
PAE/V
4.18
PAE/H
Series Zefiro
4.5.4 PAE/HF -External air inlet connection
The auxiliary air intake can be installed on all the Zefiro fan coil units, with or without casing, with front
suction. It comprises an infill panel with a circular flanged air inlet for connections to a hole in the wall or
to a suction pipe.
This auxiliary inlet can be used to add fresh air to a room or simply to increase the suction capacity of the
fan coil unit.
The centre-to-centre distances and the sizes of this component, relative to each size of fan coil unit are
indicated in the following table. The flange is 50mm high.
A
B
C
4.5.5
308-316320
260
100
100
628-634 840-1260
390
100
100
520
100
100
1575
1885
650
100
100
780
100
100
PAEM - Motor for external air shutter
The motor for the external air shutter opens or closes the external air inlet and can be installed both on
vertical and horizontal models. The flow of fresh air (that is, the various opening stages of the external air
inlet) is always manually adjusted and is performed by pre-calibrating the angular stroke of the
servomotor. The device therefore only allows the external air inlet to be opened or closed for a previously
set rate of flow.
Technical features
Torque:
Travel time:
Power input:
Consumption:
Angular stroke:
Protected to:
4 Nm
20…35 s
230 V – 50/60 Hz AC
4,8 W (during stroke)
1,2 W (after stroke)
0-90°
IP 42
4.19
Series Zefiro
4.5.6
PPV – Rear panels for vertical models
The panels, painted in the same colour as the casing, cover the rear of the fan coil units (VA + CZ and VB
models) when they are installed against glass walls or when the rear can be seen.
4.5.7
PPHA/B- Rear panels for horizontal models
These panels, painted in the same colour as the casing, cover the rear of the horizontal fan coil units when
they are installed with the rear in sight.
The PPHA is mounted on models HA.
The PPHB, instead, is mounted on models HB.
PPHA
Colour:
4.20
STD RAL 9010
PPHB
Series Zefiro
Delivery plenum
This type of accessory can only be mounted on built-in models
4.5.8
PMZE - Delivery plenum with circular connectors
The delivery plenum allows the fan coil unit to be connected to circular ducted air distribution systems.
The accessory is made from galvanised sheet metal, on request and for an extra charge, it is lagged (order
code COIB) to prevent humid external air from condensing on the walls when applied to fan coil units
working in the conditioning mode.
The plenums may have from one to three connector flanges depending on the size of the fan coil unit and
they can be fixed to the wall with pressure screws and to the delivery intake by means of self-threading
screws (the latter are supplied in kit form).
The following table and drawing indicate the different sizes.
The plenum will be supplied withou any insulation. In case you need the insulation, indicated it in the order
(code “coib.”).
308 – 316 -320
Φ flange
Flange heigth
Nr. of flanges
A
B
C
1
540
260
--
628 - 634
840 - 1260
1575
1885
2
800
227
325
[mm]
160
60
3
1060
195
325
4
1320
200
300
5
1580
180
300
4.21
Series Zefiro
4.5.9
PM90ZE - Delivery elbow connector
This elbow deviates the air flow by 90°, pushing the delivery of the fan coil unit to the front. It is made
from galvanised sheet metal and, on request and for an extra charge, it is lagged to prevent humidity from
condensing on the walls when the fan coil unit is working in the conditioning mode. The plenum is fixed
to the fan coil unit inlet with self-threading screws supplied in kit form.
The plenum will be supplied without any insulation. In case you need the insulation, indicated it in the
order (code “coib.”).
308-316-320
A
451
628-634
711
840-1260
1575
1885
[mm]
971
1231
1491
4.5.10 RTZE - Delivery telescopic connector
This connector connects the fan coil unit delivery with a surface located at a distance varying from 101 mm
to 191 mm. Its walls, on request and for an extra charge, can be lagged to prevent humid air from
condensing when it is connected to a fan coil unit working in the conditioning mode. It is made from
galvanised sheet metal and fixed to the outlet of the appliance with the relative holes and self-threading
screws supplied in kit form. The following table and drawing indicate the different sizes.
The plenum will be supplied without any insulation. In case you need the insulation, indicated it in the
order (code “coib.”).
308-316-320
A
B
4.22
525
520
628 - 634
785
780
840 - 1260
[mm]
1045
1040
1575
1885
1305
1300
1565
1560
Series Zefiro
4.5.11 GFM Fixed delivery grille
This grille, made from anodised aluminium, is used to finish the outside of air delivery outlets incorporated in
pieces of furniture or panels covering built-in fan coil units. The fins can be adjusted.
The following table and drawing indicate the different sizes that can be used to make the housings
308-316-320
628 - 634
840 - 1260
1575
1885
1338
1296
1598
1556
[mm]
A
B
558
516
818
776
1078
1036
4.5.12 GF2 - Dual adjustment delivery grille
This grille, made from anodised aluminium, is used to finish the outside of air delivery outlets
incorporated in pieces of furniture or panels covering built-in fan coil units. The fins can be adjusted
horizontally and vertically, thereby directing the flow of air in the room.
The following table and drawing indicate the different sizes that can be used to make the housings.
308-316-320
628 - 634
840 - 1260
1575
1885
1338
1296
1598
1556
[mm]
A
B
558
516
818
776
1078
1036
4.23
Series Zefiro
Suction intake plenum
This type of accessory can only be mounted on built-in models
4.5.13 PACZE - Suction intake plenum
The plenum allows to connect the fan coil unit to a dual suction intake system simply breaking appropriate
pre-blanks.
It is possible to connect the fan coil to a suction canal by breaking only the pre-blank of rear side.
Otherwise by breaking the pre-blank of plenum frontal side it is possible to deviate air flow of 90°.
Breaking both pre-blanks it is possible to realize a mixture between renewal air and blow-by air.
The device is made out of galvanised sheet metal and is fixed to the sides of the fan coil unit. The filter
placed in a special housing can also be removed with the plenum fixed.
4.24
Series Zefiro
4.5.14
PAZE – Suction intake plenum with spigots
This plenum allows the fan coil unit to be connected to circular ducted air distribution systems; it is made
from galvanised sheet metal.
The plenums can have from one to three connection flanges, depending on the size of the fan coil unit, to
which they are fixed with self-threading screws through the holes in the side of the appliance.
As visible in the photo, the filter can also be removed with the accessory mounted, by the housing on the
plenum itself. The following table and drawing indicate the different sizes.
308-316-320
Φ flange
flange heigth
Nr of flanges
A
B
C
628 - 634
840 - 1260
1575
1885
4
202
300
1305
5
180
300
1565
[mm]
160
60
1
262
-525
2
230
325
785
3
197
325
1045
4.5.15 GFA- Fixed suction intake grille
The suction fixed grille, made from anodised aluminium, is used to finish the outside of air inlets
incorporated in pieces of furniture or panels covering built-in fan coil units.
The following table and drawing indicate the different sizes that can be used to make the housings.
308-316-320
628 - 634
840 - 1260
1575
1885
1337
1295
1597
1555
[mm]
A
B
557
515
817
775
1077
1035
4.25
Series Zefiro
4.6 Other accessories
4.6.1
PSCZE - Condensate drain pump
This accessory drains the condensate from the fan coil unit in special system conditions.
The condensate drain pump has an alarm and a fan coil unit stop device when the flow of water to drain
is higher than allowed.
Note: in case of horizontal unit HA-HC-HL with B1 auxiliary coil, it will be not possible to installed the
PSCZE/BI-O
PSCZE/BI-V
Maximum rate of flow.
Maximum delivery:
Maximum suction:
Voltage:
Max. Power:
4.6.2
8 l/h
8m
2m
230 V/50 Hz – 110 V 50/60 Hz
10W
PSCZE/BI-O
Maximum rate of flow. 10 l/h
Maximum delivery:
6m
Maximum suction:
2m
Voltage:
230 V- 50/60 Hz
Max. Power:
18 W
FAG3 - Special filter
The special filter has a higher filtering efficiency than
the standard type (G3 instead of G1).
The sizes are the same as the filter supplied standard on
the fan coil units (see par 1.2.3).
It can be removed and cleaned up in the same way of the
standard filter.
It is light-blue on one side and white on the other. In
order to use it correctly, the filter must be mounted with the light-blue surface pointing towards the
outside of the fan coil unit.
The pressure drops induced by this type of filter differ slightly from standard.
4.26
Series Zefiro
4.7 Guide to accessories and spare parts
The following tables summarise the accessories presented in the previous paragraphs and relate them to the
models of fan coil units on which they can be installed in seriess or as an accessory. The various models of
valve that can be mounted on all the types of fan coil unit are not listed; these are dealt with in paragraph 4.4.
The available spare parts are also indicated.
Accessory code
Description
VA
VB
Accessories for operating control
HA
HB
VC
VD VE
VF
HC
HD
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
○(1)
Infrared control MIGA + IRT + IRP
○
○
○
○
○
○
MCS02
Infrared control MIGA + IRT + ETN with wall thermostat
○
○
○
○
○
○
MCS03
Infrared control MIGA + IRT + FMH with flush mounting
thermostat
○
○
○
○
○
○
MCS04
Infrared control MIGA + ETN with wall thermostat
○
○
○
○
○
○
MCS05
Digital control MIGA + FMH with flush mounting
thermostat
○
○
○
○
○
○
Low water temp. Thermostat for heat pump
○
○
○
○
○
○
ELMZ
“master/slave” Elevator module
TR24
Transformer 230/24V for modulating valve models
AS
Running/allarm detector
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
CZ
Feet set
CZF
Socle with suction panel (full socle)
PAE/V
Ext. Air damper for vertical models
PAE/H
Ext. Air damper for horizontal models
PAE/HF
External air inlet connection
PAEM
Motorization for shutter
PPV
Rear panel for vertical models VA+CZ - VB
PPHB
Rear panel for horizontal models
PPHA
Rear panel for horizontal models
PMZE
Outlet plenum with spigots
PM 90ZE
90° outlet plenum
RTZE
Telescopic connector
GFA
Fixed grilles for suction
GFM
Fixed grilles for outlet
GF2
Double regulation alluminium fixed grilles for outlet
PACZE
Multi-suction plenum
PAZE
suction plenum with spigots
COIB
Plenum insulation
○
-
○
○
○
○
○
-
○
-
○(2)
○(7)
○(2)
○(6)
○(6)
○(6)
○
○
○
○(4)
○(4)
○
○(3)
○(7)
○(3)
○
○
○
○
○
○
○(4)
○(4)
○
CSN
3 speeds electronic selector with S/W switch
SATH
Electronic thermostat with 3 speeds sel. ,S/W selector
TOP1
Electronic regulator with S/W selector
MCS01
TM
(8)
System accessories
○ optional
○
○
○
○
○
-
– unavailable
(1)These types of control devices can be installed both on the wall and on the machine; in this case add BI to
the accessory code when ordering;
(2)Can be installed only on VC, VE models;
(3)Can be installed only on HC;
(4)These types of plenum cannot be installed on models with inlet at the front;
(5)The required quantity should be indicated when ordering;
(6) only on VC and VD models;
(7) only on frontal inlet models.
(8) not available with TOP1 HP and TOP1 0/10V HP
4.27
Series Zefiro
Accessory
code
VB
HL
HA
HB
VC
VD VE
VF
HC
HD
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○(5)
○
○
○
○
○
○
○
○
○(5)
○
○
○
○
○
○
○
○
○(5)
○
○
○
○
○
○
○
○
○(5)
○
○
○
○
○
○
○
-
○
○
○
○
○
○
-
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
○
VA
VL
Description
Other accessories
EH
Electr. heater (only in 2 (*) and 3 rows without B1)
EHR
Relais for electrical resistance
PSCZE
Condensation drainage pump
PSCZE/BI-V
Condensation drainage pump factory installed vertical
PSCZE/BI-O
Condensation drainage pump factory installed horizontal
FAG3
Special filter
FLXZ22
Flexible pipes for 2 pipes L=20cm ½”
FLXZ24
FLXZ42
FLXZ44
Spare parts
B1Z-BPZ
1 to 4 rows coil
AT
Autotransformator
GRV
Fan deck
CAB
Cabinet without plastic grilles
FDX – FSX
Right, left plastic side
ADPZ
Auxiliary drain pan
FA
Air filter
GRZ
Delivery plastic grilles
SPZ
Door
Modulating Valves
V2M
3 way /4 gate modulating Valve
V2MK
3 way /4 gate modulating Valve, kit not mounted
V4M
3 way /4 gate modulating Valve 4 pipes
V4MK
3 way /4 gate modulating Valve 4 pipes,kit not mounted
On off Valves
V22
2 way On/Off valve set for 2 pipes systems
V42
2 way On/Off valve set for 4 pipes systems
V23
3 way / 4gate on/off valve 2 pipes
V43
3 way / 4gate on/off valve 4 pipes
V22K
2 way on/off valve for 2 pipes systems,kit not mounted
V42K
2 way on/off valve for 4 pipes systems,kit not mounted
V23K
3 way / 4gate on/off valve 2 pipes systems,kit not mounted
V43K
3 way / 4gate on/off valve 4 pipes systems,kit not mounted
DET2
Holder for 2 pipes
DET4
Holder for 4 pipes
○ optional
– unavailable
(1) These types of control devices can be installed both on the wall and on the machine; in this case add BI to
the accessory code when ordering;
(2) Can be installed only on VC and VE models;
(3) Can be installed only on HC model;
(4) These types of plenum cannot be installed on models with frontal inlet
(5) The required quantity should be indicated when ordering.
4.28
Serie Zefiro
5.
ELECTRICAL DIAGRAMS
The company’s constant attention to the most varied customer requirements leads it to regularly adopt new
and more effective control systems for its fancoil units.
This chapter describes, solely from the functional point of view, the electric diagrams that were available at
the date this technical manual was published.
In following pages are present electrical outlines used by company
Key
CSN
SATH
TOP1/
TOP1HP
TOP1 –
0/10 V
Thermostat for fan speeds control. Summer/winter set switch gives operating logic to
minimum temperature thermostat
Electronic Thermostat, with manual speed selector and valves control.
Thermostat electronic with automatic or manual three speeds running and summer/winter
mode control
Thermostat electronic with automatic or manual three speeds running and summer/winter
mode control for modulating valves
TM
Minimum temperature thermostat
EH
Electrical heater
EHR
IR
Vxx
VxM(K)
PSCZ
Relais interfaccia di potenza per riscaldatore elettrico
Electrical heater switch (CSN)
ON/OFF ElectroValve
Modulating valve (avaiable also in Kit)
Condensate drain pump
AS
Consente un monitoraggio del corretto funzionamento del motore di unità.
24V
24 Volt supply
ELMZ
Control device for driving various fancoils
TR24
230 V (In) – 24 V (Out) tension transformer
Note: –BI indicates accessory mounted on the machine
5.1
Serie Zefiro
5.1 Fancoil units motors wiring
The same electrical diagrams can be used for all the sizes of Zefiro Serie fancoil units; the only difference
is in the wiring of the three motor running speeds.
On Zefiro sizes 308-1260 the motor is single-phase and has a single speed of rotation, the six available
operating speeds are derived from a voltage autotransformer connected to the motor; the three standard
speeds are selected from the six available ones.
The autotransformer has a terminal board with eight clips to which the motor power input and the wires for
running speeds control are connected.
Instead the motors for Zefiro sizes 1575-1885 are still single-phase, six speeds of rotation but directly
wired to the internal windings of the motor itself. In this case, too, three of the six available speeds are
selected.
Motor A with autotransformer for Zefiro 308/1260
Motor B for Zefiro 1575-1885
The following table contains the letters identifying the various connections to the electric motors and the
colours of the wires for the various operating speeds. There are always five wires leaving the
autotransformer: the common, the earth and the three speeds, the latter can be identified by different letters
depending on the autotransformer terminal to which they are connected (e.g.: the red wire could be
indicated on the electrical diagram with the letter d or p in the case the fan coil unit works at the minimum
standard speed or at the lowest speed of the autotransformer).
MOTOR A
Faston on autotransformer.
MOTOR B
Color of connection wires
Color of connection wires
white (common)
M
M
a
L
blue (common)
i
1
---
Black
b
2
Black (standard max speed)
Grey (standard max speed)
c
3
Orange
Blue
m
4
---
Orange
d
5
Red
Brown
p
6
---
Red
e
Green/Yellow (Earth)
f
Internal unit connecting limit
g
Power cable
h
Shutting bridge
Summer =cooling mode
Winter = Heating mode
5.2
Serie Zefiro
5.2 Electrical diagrams for the operative control of the fan coil unit
with commands on the machine supplied by the company
W OFF
ME
S
a b c d
CSN
V1
V2
V3
L N TMTM C V1 V2 V3
230V
50 Hz
{
L1
N
CSN
OFF ON
CO
V1
V2
V3
TM
TM
L
CO=FASE ALIMENTAZIONE MOTORE
CO=
MOTORVELOCITA'
INPUTMIN
PHASE
V1=COMANDO
V1= MIN SPEED COMAND
V2= MED SPEED COMAND
V3= MAX SPEED COMMON
TM= COMMON SPEED INPUT
N = MOTOR INPUT COMMON
N
CE
V1
V2
V3
E1
E2
E3
H1
H2
C1
C2
C3
C4
H3
H4
CE=USCITA NEUTRO COMUNE MOTORE
CE= COMMON
E1=USCITA (FASE) VELOCITA' MIN
NEUTRAL
OUTPUT
H1 H2 H3 H4 = HEATING
E1= MIN SPEED (PHASE) OUTPUT
E2= MED SPEED (PHASE) OUTPUT
E3= MAX SPEED (PHASE) OUTPUT
H1,H2,H3,H4 =HEATING
C1,C2,C3,C4 =COOLING
ELMZ
5.3
INV OFF EST
V1
V2
IN OUT
SATH
JUMP. OUT EXTERNAL PROBE
JUMP. IN INTERNAL PROBE
Serie Zefiro
V3
INLET PROBE
MIN
MED
MAX
COMMON
N
L
L N N V1 V2 V3 N E I E/I TMTM
°t
EST
Vel. 1
STby
Vel. 2
INV
E
I
Vel. 3
°t
EST
Vel. 1
STby
Vel. 2
INV
E
I
1 VALVE CIRCUIT
Vel. 3
ME
°t
EST
a b c d
Vel. 1
STby
Vel. 2
INV
Vel. 3
NO VALVE CIRCUIT
2 VALVES CIRCUIT
SATH
5.4
E
I
TOP1
SPEED MAX
E/I
6
5
4
3
2
1
ON
On
Off
E/I
WATER
AIR
2
DELAY VENT
ACTIVE
FALSE
3
OPTIONALS
NONE
NONE
4
NEUTR. ZONE
5°C
2°C
6
AIR SENSOR OUTLET+AIR INLET+OFFSET
2/4 PIPE
2 PIPE ONLY
VH
TERMOSTATO DI MINIMA
Function
1
FUNZIONE ECONOMY
NTC
10K
DIP switch
5
AIR OUT PROBE
MIN
MED
MAX
COMMON
N
L
L N N V1 V2 V3 VHVC SEECTM M
JUMP. OUT EXTERNAL PROBE
SPEED MIN
SPEED MED
OUT IN
OFF ON
JUMP. IN INTERNAL PROBE
Serie Zefiro
4 PIPE
TOP1, TOP1-HP
speed MIN
< JUMPER FOR
< SELECT PROBE INLET
speed MED
speed MAX
E/I
5 - 30 °C
out in
on
0-10V
air out probe
1
0-1-2-3
push botton
SW2
2
230 V
DIP SWITCH
50/60 Hz
TM
EARTH
FAN MOTOR
230V ac
OUTLET WATER PROBE
T < 15°C = COOL
T > 35°C = HEAT
EV HEAT
EV COOL
OFF
FUNCTION
ON
1
E/I
WATER
AIR
2
DELAY VENT
ACTIVE
FALSE
3
OPTIONAL
NONE
NONE
4
NEUTRAL ZONE
5° C
2° C
5
AIR SENSOR
OUTLET + AIR
INLET + OFFSET
6
2/4 PIPE
2 PIPE ONLY VH
4 PIPE VE + VC
TA 230/24
TOP1 0/10 V, TOP1 0/10V-HP
5.5
Serie Zefiro
AS
Red
Allarm
Signal
Green
Set
corrente
Running
Signal
ADJ
{
L1
N
{
230V
50 Hz
{
L1 N C V1 V2 V3 NC C NA NC C NA
A
B
1
Contact A
Contact B
Alarm
Motor Running
Signal
Signal
OPEN
OPEN
RED LED
OFF
OFF
UNIT IS OFF
OPEN
CLOSE
ON
OFF
UNIT IS ON
CLOSE
CLOSE
ON
ON
UNIT IS IN
ALLARM
AS
5.6
GREEN
LED
Series Zefiro
6.
INSTALLATION E MAINTENANCE
6.1
Preliminary operations
All Zefiro fan coils are delivered packed in a box together with Use and Maintenance instructions manual
which summarises informations gave in this chapter and better described in this technical manual.
The factory will not cover damages and/or functional defects on the units due to ambiental factors and/or
atmospheric agents which could damage the components (ex. air with high salt concentration or corrosive
agents). In this case we suggest you to contact us in advance and to require components with special
treatments.
The adhesive label placed on the outside of the packing identifies the model, the size and the direction of
the hydraulic connectors of the fan coil; the codes of the accessories mounted on the appliance are also
indicated.
In order to prevent accidental damages, unpack the unit only at the moment of installation; mount the
casing, where applicable, just when installation has finished.
After unit installation, cover it to prevent the exchanger and electrical connections can be ruined by dust
and dirt.
Remove the packaging opening the bottom and lifting up the box.
6.1.1 Models with casing
Into Series Zefiro, in order to perform
operations of installation and connection
of hydraulic circuits and electrical supply,
is not required to remove the component
of the cabinet fixed to the body machine.
To remove plastic cover repeat following
actions for each side, as showed in figure
below.
- lift plastic cover;
- unscrew safety screw;
- rotate and pull softly the plastic
side making lever on inferior
part;
- put the side in a protected place.
6.1
Series Zefiro
6.2
Wall or ceiling fixing
Before proceeding the wall or ceiling fixing, verify the following points:
- the unit baricenter (only for ceiling installation) cannot be higher than 2,8 m ,to permit the air to
reach the floor without any stratification effect;
- the wall has to be sufficiently strong;
- respect the installation distance to permit the maintenance;
- No curtains or any other object must obstruct the inlet or outlet air flow;.
Follow these instructions for the mounting of the unit:
- mark the fixing holes position using the example of the picture below. Leave a distance of min.
180 mm (for embedded model) between the fan coil side and the wall; for case model the distance
between unit side and wall must be 200 mm at least.
- minimal distance from bottom side for VA, HA, VL and HL models, respectively from the floor
and the wall, has to be at minimum 100 mm, to permit a proper air suction;
- use 4 screws (M6 L=60) with dowels φ =8 mm.
- It is always advisable the use of interception taps for the water to send to the fancoil
Before the first start-up and if there are several units connected, it is advisable to open the taps one
at the time to identify as soon as possible the presence of leakage.
Before start-up the system check the correct drainage of the condensate from the drain pan. If
needed give a slight inclination towards the discharge pipe (horizontal model).
Vertical
Horizontal
308-316-320
628-634
840-847-1250-1260
1575
1885
A
558
818
1078
1338
1598
B
538
798
1058
1318
1578
Ceiling fixed fan coil, in heating mode, decrease their efficiency if installed beyond 2,80 metres of
height. If necessary, please use suction plenum to lower air inlet point
See the pictures below to know the suggested dimensions for installation.
6.2
Series Zefiro
Models with case
Models without case
6.3
Series Zefiro
6.3
Hydraulic connections
To obtain the maximum heat exchange efficiency it is important
to respect the indications located on the side of the fan coil unit
relative to the coil water inlet and outlet.
Please remember that the appliances work with reverse current
circulating water compared with the direction of the air crossing
the exchanger. The inversion of the order of connectors does not
affect fan coil unit operation, but it does lower heat exchange
performance.
The valveless appliances have ½’ GF hydraulic connectors
directly welded to the coil/s. The holes made on the side of the
fan coil unit, in which the hydraulic connectors are put, have a
shape to prevent connectors bending ; the feed pipes must be
fixed with care in order to prevent exchanger manifolds bending
and the risk of breaking the welds and causing leaks of water.
The fan coil units with valves, instead, have ½’ GM hydraulic
connectors on sizes 308…847 and ¾’ GM on size 1250…1885.
After hydraulic pipes fixing , check all unions in the valve kit
and their respective seals. For further information please consult
paragraphs 2.5 and 4.4 of this manual.
The tightness test is performed on the fan coil units fitted with the kit and valves mounted; the fitter must
therefore make sure the valve assembly remains fixed in the same position and that there are no leaks.
The condensate collector is connected to the drain line by a special plastic connector supplied with the
appliance. The assembly instructions are indicated on an adhesive attached to the side of the fan coil unit.
6.4
Series Zefiro
6.4
Electrical wirings
All Serie Zefiro fan coil work with single-phase alternate current 230V 50-60Hz
Making electrical wiring, scrupulously follow the electrical diagrams attached to each appliance. The
machine must be wired so that all the additional connections for operating the machine are only used on
the terminal board.
The company accepts no liability for electrical installations that do not comply with the wiring diagrams
supplied with the machine.
6.5 Starting up the appliances
Before starting fan coil unit, make sure that:
- it is connected to the earth circuit and that
suitable electrical protection devices have
been installed;
- the condensation drain line is working and
the drain pan discharges correctly the
condensate;
- the air filter is positioned correctly;
- the air delivery is not obstructed and that
nothing is touching it, especially when the
electric heater is installed on the fan coil
unit.
When the starting the system, the pipes must be
vented. All the exchangers are fitted with air
vents. This device is worked with a screw that
can be accessed from the side of the fan coil
unit for all coils.
The vented air is discharged inside the appliance
It is collected in the main tank and drained
outside by the relative circuit.
When used for the first time, the fan coil unit must work for a few hours non-stop in order to run in the
fan motor before it will work at maximum efficiency.
6.5.1 Delivery grilles and fixing the hatches
In the models with casing the grilles are snap-fitted
to the casing. Lift up fairly strongly to remove
them.
The fan coil units leave the factory with the grilles
positioned in such a way as to send the air to the
front of the appliance.
Turning the grilles by 180°, the air delivery passes
from front to rear.
stopper
For installations in public places such as schools,
libraries and shopping centres, it may be necessary
to forbid access to the control box and hydraulic
connections.
These accesses can be closed with the two special
screws located on the outer edges of the hatches.
After being fixed, the head of the screws is covered with a cap for aesthetic reasons.
6.5
Series Zefiro
6.6
Alternative layouts
Some modifications to Zefiro Serie fan coil units can be made directly on site in order to change the
layout while keeping the functionality and efficiency of the appliance unaltered
6.6.1 Inverting the hydraulic connections
At times it may be necessary to invert the hydraulic connections from right to left or vice-versa due to
changes in requirements or incorrectly fitted water pipes.
If the fan coil unit is fitted with valves ask the company for a new valve kit, depending on whether the fan
coil unit is right or left.
Proceed as follows:
a) Unscrew the three screws fixing the control box (2) and screw them into the holes on the opposite
side. It is not necessary to open the control box or disconnect the electrical connections, risking
altering the internal cabling;
b) dismount the valves if present;
c) dismount the main coil (1) unscrewing the fixing screws on the sides, thereby making the coil/s
accessible;
d) unscrew the screws fixing the coil/s (3) to the sides, remove the exchanger lifting it first from the
side opposite the connectors;
e) after breaking the holes in the side, turn the coil 180°, fit the manifold connectors into the new holes
and screw up using the relative holes.
f) close the old holes with insulating tape;
g) fix the main tank to the sides of the fan coil unit, free the blocked drain and block the old one using
a suitable silicon-based sealer;
h) remount the valves, if present, using the new kit;
i) fit the auxiliary coil (4) on the opposite side.
RIGHT
1 – Main tank
2 - Control Box
6.6
LEFT
3 – Heat exchanger
4 - Auxiliary coil
Series Zefiro
6.6.2 Changing fan speed
The fans mounted on Zefiro fan coil units have six speeds, three of which are set by factory. For special
requirements, the three alternative speeds can be used.
To change operating speeds modify the autotransformer of the fan motors 308…1260 and the wiring inside
the electrical panel for sizes 1575 and 1885
For details and information about which electrical connections to modify, please consult paragraph 5.1.
6.7 Maintenance
6.7.1 Removing and cleaning the filter
The method for removing the filter is the same for all models.
In vertical and horizontal models to
remove filter
just push it
respectively towards the bottom or
the top of the units, incline it
downwards and pull it out.
In VB and HB models to have access
to filter just open the panel, making
lever on its superior side with a
screwdriver.
Periodic cleaning of the filter (once a
month in continuous operating
conditions) ensures the fan coil unit
is perfectly efficient. The filter can
be cleaned with a domestic vacuum
cleaner or, alternatively, when there
is an excessive accumulation of dirt
and dust, it can be washed with warm
water and a neutral detergent.
−
−
6.7.2
Caution:
before reusing the filter, make sure it is perfectly dry;
do not use the fan coil unit without a filter;
Inspection and/or removal of the fan assembly motor (GRV)
The fan assembly can easily be removed by loosening the two fixing screws located on the sides of the fan
coil unit and removing it from its housing.
6.7
Series Zefiro
6.8
Examples of typical installations
The following prospect illustrates some typical installations of the Silent fan coil units.
HA
HB
HB + PAE/HF
VA+PAE/V
VB
VA
VD + PAE/HF
VC+RTZE
HC + PMZE
HC
HD + RTZE
H=2.80m MAX
PACZE + VC + PM90ZE
H=2.80m MAX
6.8
PACZE + HC +
PM90ZE
Serie Zefiro
7.
APPENDIX – Performance data
This paragraph contains the performance data of Zefiro Serie fancoil units.
Following tables and graphs allow to choose most suitable unit for one’s requirements with sufficient
accuracy.For operating conditions differing from rated ones, please consult the selection programme that
can be obtained on request, by the company.
7.1 Air flows with external static pressure
Size
308
316320
628634
840847
12501260
1575
1885
The datas refer to the unit working with the intake free, complete of casing and grilles, with
clean, temperature and ambient pressure equal to 20 °C and 1.033 bar respectively.
Pressure [Pa]
Speed
0
10
20
30
40
50
60
70
80
1
370
348
325
299
270
236
196
136
MAX
300
277
251
222
190
151
101
MED
250
224
196
164
129
87
32
m³/h
4
225
193
160
127
90
45
MIN
175
126
69
6
150
103
43
1
330
308
284
258
229
195
158
111
53
MAX
300
272
244
214
182
146
104
3
255
228
199
168
131
86
29
m³/h
MED
235
195
158
118
72
5
175
129
83
32
MIN
156
103
35
1
590
549
506
462
417
369
321
266
208
MAX
530
485
437
390
340
290
239
185
128
MED
445
398
351
305
258
211
161
108
m³/h
4
356
312
270
226
181
134
81
MIN
300
242
183
120
52
6
286
208
137
72
10
1
916
866
812
759
700
641
580
517
454
MAX
730
694
653
606
553
499
442
384
327
3
657
607
560
514
469
424
378
331
283
m³/h
MED
585
526
473
428
382
339
293
245
192
5
435
364
303
243
188
132
76
MIN
390
302
232
168
107
51
1
1249
1203 1152 1093
1027
952
871
782
689
MAX
1130
1088 1042 987
923
852
768
682
595
MED
1050
987
923
862
800
737
673
607
539
m³/h
MIN
860
803
749
694
640
588
533
478
422
5
636
562
506
457
412
368
324
279
232
6
594
492
434
383
339
295
254
209
162
1
1425
1369 1311 1250
1183
1108
1030
944
851
MAX
1310
1244 1180 1116
1052
985
914
841
760
MED
1220
1165 1108 1044
980
908
832
751
666
m³/h
MIN
1035
993
946
898
845
787
722
651
571
5
822
846
806
763
717
665
607
543
472
6
688
656
621
579
534
483
428
371
313
1
2050
1958 1858 1754
1646
1530
1410
1281 1145
MAX
1850
1753 1651 1550
1446
1334
1222
1107
986
MED
1600
1522 1441 1360
1272
1182
1088
988
882
m³/h
4
1400
1332 1258 1184
1105
1020
930
837
736
MIN
1250
1182 1109 1035
960
879
794
707
614
6
1050
984
915
845
771
698
618
535
460
the filter
90
100
143
389
270
229
128
322
210
169
597
510
469
364
180
108
749
670
575
483
393
254
1005
870
773
636
524
378
507
429
396
302
115
7.1
641
570
479
385
308
195
876
757
665
529
420
243
Serie Zefiro
7.2 Heat exchange outputs
7.2.1 Cooling outputs with water coil
The following tables indicate the cooling output (total and sensitive), the flow of water circulating in the coil, the
hydraulic pressure drop, the air flow achieved by Zefiro series of fancoil units. The ambient temperature and
relative humidity conditions and the temperature of the circuit water are as described.
Main Exchanger
Room Temperature 27 °C (B.S.) – 47%
Water Temperature 7 °C (In) – 12 °C ( Out)
SIZE
308
Sensible capacity
Water flow rate
Pressure drop
316
Sensible capacity
Water flow rate
Pressure drop
320
Sensible capacity
Water flow rate
Pressure drop
628
Sensible capacity
Water flow rate
Pressure drop
634
Sensible capacity
Water flow rate
Pressure drop
840
Sensible capacity
Water flow rate
Pressure drop
847
Sensible capacity
Water flow rate
Pressure drop
1250
Sensible capacity
Water flow rate
Pressure drop
1260
Sensible capacity
Water flow rate
Pressure drop
1575
Sensible capacity
Water flow rate
Pressure drop
7.2
unit
1
2
3
4
5
6
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
KW
KW
l/h
kPa
1,22
1,05
209,3
2,6
1,53
1,24
262,5
7,2
1,93
1,46
331,6
14,6
2,67
2,18
458,9
8,6
3,18
2,47
545,4
7
4,28
3,41
733,8
24,9
5,11
3,93
876,7
20,6
5,19
4,32
890,5
35,1
6,3
4,93
1080,1
29,5
7,22
5,69
1239,6
14,8
0,97
0,93
166,4
1,4
1,43
1,18
246,1
4,7
1,81
1,38
310,7
9,6
2,49
2,08
426,5
5,5
2,94
2,31
504,4
4,4
3,67
2,99
630,1
13,8
4,34
3,32
744
11,3
4,86
4,2
834,7
22,8
5,88
4,72
1008,3
19,3
6,82
5,48
1170,4
9,8
0,92
0,88
157,9
0,6
1,27
1,05
217,7
2,9
1,6
1,21
274,8
6
2,2
1,83
377,9
3,4
2,58
2,02
442,5
2,7
3,43
2,79
588,4
9,3
4,04
3,09
692,6
7,6
4,65
4,05
797,8
15,9
5,6
4,52
960,7
13,4
6,5
5,25
1114,5
6,9
0,83
0,79
142,8
0,2
1,2
1,03
205,5
2
1,51
1,16
258,7
4,2
1,86
1,58
319,6
2,1
2,15
1,7
368,7
1,6
3,17
2,65
543,9
6,5
3,71
2,84
635,7
5,1
4,08
3,62
699,2
9,9
4,86
3,93
833,9
8,1
5,76
4,75
988,8
4,3
0,73
0,7
125,4
0,1
0,93
0,78
159,3
1,1
1,17
0,87
200,7
2,2
1,63
1,37
280,1
1,3
1,85
1,44
317,3
1
2,55
2,05
437,3
3,5
2,91
2,17
499,4
2,8
3,3
2,78
566,1
5,5
3,87
3,04
663,9
4,4
5,11
4,11
876,7
2,9
0,66
0,62
112,6
0
0,89
0,73
152,3
0,8
1,06
0,78
182,2
1,6
1,57
1,3
269,4
1
1,73
1,35
296,7
0,8
2,35
1,87
403,8
2,6
2,68
1,98
459,4
1,9
3,15
2,64
540,8
4,4
3,69
2,88
633,4
3,5
4,21
3,32
723,1
1,7
Serie Zefiro
KW
KW
l/h
kPa
1885
Sensible capacity
Water flow rate
Pressure drop
10,25
8,26
1758,6
31,9
9,35
7,54
1603,9
21,2
8,33
6,77
1428,8
13,9
7,58
6,13
1300,2
9,6
6,99
5,64
1199,1
7
6,14
4,88
1053,2
4,8
7.2.2 Heating outputs with water coil
Main Exchanger
SIZE
Heating capacity
308
Water flow rate
Pressure drop
Heating capacity
316
Water flow rate
Pressure drop
Heating capacity
320
Water flow rate
Pressure drop
Heating capacity
628
Water flow rate
Pressure drop
Heating capacity
634
Water flow rate
Pressure drop
Heating capacity
840
Water flow rate
Pressure drop
Heating capacity
847
Water flow rate
Pressure drop
Heating capacity
1250
Water flow rate
Pressure drop
Heating capacity
1260
Water flow rate
Pressure drop
Heating capacity
1575
Water flow rate
Pressure drop
Heating capacity
1885
Water flow rate
Pressure drop
unit
1
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
2,94
258,2
3,9
3,68
323,7
7,9
4,27
374,6
13,6
6,42
564,5
9,2
7,43
651,8
7,1
9,81
861,9
24,7
11,37
997,9
19,3
12,29
1079,8
36,8
14,98
1316
29,5
16,8
1474,9
15
22,11
1941,8
31,8
2
3
4
5
2,62
2,3
2,13
1,79
230,2 202,3 187,3 157,4
2,4
1,5
1
0,6
3,43
3,03
2,84
2,25
301,8 266,7 249,9 198,2
5,3
3,4
2,5
1,3
3,95
3,46
3,24
2,52
346,7 303,9 284,9
221
9,3
5,9
4,2
2,1
5,94
5,19
4,35
3,8
522,4
456
382,4
334
6,2
3,8
2,2
1,4
6,81
5,9
4,9
4,24
597,9
518
430,4 372,3
4,9
2,9
1,7
1,1
8,26
7,64
7
5,51
726
671,7 615,2 484,1
14,1
9,5
6,5
3,4
9,46
8,71
7,94
6,17
830,8 764,7 696,9 541,4
11
7,5
5,2
2,6
11,43 10,83
9,32
7,37
1003,8 951,8 819,1 647,5
24,7
17,5
10,6
5,5
13,37 12,63 10,76
8,38
1174,7 1109,3
945
736,2
19,9
14,2
8,5
4,3
15,75
14,9
13,04 11,44
1382,6 1307,9 1144,4 1003,8
10,4
7,4
4,7
3
20,71 18,51
16,7
15,2
1818,2 1624,5 1465,9 1333,6
22,1
14,6
9,8
7
6
1,58
139
0,5
2,05
180,5
0,8
2,28
200,4
1,6
3,65
320,7
1
4,07
357,5
0,9
5,05
443,7
2,4
5,62
493,4
1,8
7,01
615,8
4,2
7,95
697,7
3,2
9,29
815,2
1,6
13,2
1158,1
4,6
7.3
Serie Zefiro
Main Exchanger
Water Temperature 50 °C (In) – 43,3 °C (Out)
SIZE
unit
Heating capacity
308
Water flow rate
Pressure drop
Heating capacity
316
Water flow rate
Pressure drop
Heating capacity
320
Water flow rate
Pressure drop
Heating capacity
628
Water flow rate
Pressure drop
Heating capacity
634
Water flow rate
Pressure drop
Heating capacity
840
Water flow rate
Pressure drop
Heating capacity
847
Water flow rate
Pressure drop
Heating capacity
1250
Water flow rate
Pressure drop
Heating capacity
1260
Water flow rate
Pressure drop
Heating capacity
1575
Water flow rate
Pressure drop
Heating capacity
1885
Water flow rate
Pressure drop
7.4
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
1
2
1,71
1,52
222,5 198,4
3,2
1,9
2,16
2,02
281,9 262,9
6,6
4,4
2,52
2,33
328,8 304,4
11,6
7,9
3,78
3,49
492,3 455,7
7,7
5,1
4,37
4,02
570,3 523,4
6
4,1
5,78
4,88
753,8 635,6
20,8
11,8
6,71
5,6
874,7 728,9
16,3
9,3
7,24
6,73
942,8 876,8
30,8
20,6
8,84
7,89
1151,8 1028,7
25
16,7
9,9
9,28
1289,2 1209
12,6
8,7
13,04 12,22
1698,3 1591,6
26,5
18,4
3
1,34
174,3
1,2
1,78
232,6
2,8
2,05
267
5
3,05
398,1
3,1
3,48
453,7
2,5
4,51
588,2
8
5,15
671,1
6,4
6,38
831,7
14,5
7,46
971,8
11,9
8,79
1144
6,2
10,93
1423
12,1
4
5
1,24
1,04
161,3 135,6
0,8
0,5
1,67
1,33
218
173
2
1,1
1,92
1,49
250,3 194,4
3,5
1,8
2,56
2,24
334,1
292
1,8
1,1
2,89
2,51
377,2 326,4
1,4
0,9
4,13
3,26
538,8 424,6
5,4
2,8
4,7
3,65
611,9 475,9
4,4
2,2
5,49
4,35
715,9 566,8
8,7
4,5
6,36
4,96
828,5 646,2
7,1
3,6
7,7
6,76
1002,2 879,6
3,9
2,5
9,87
8,99
1284,7 1169,8
8,1
5,7
6
0,92
119,7
0,4
1,21
157,6
0,7
1,35
176,4
1,3
2,15
280,4
0,8
2,41
313,5
0,7
2,99
389,3
2
3,33
433,8
1,5
4,14
539,2
3,4
4,7
612,5
2,7
5,49
715
1,4
7,81
1016,5
3,7
Serie Zefiro
Auxiliary Exchanger
SIZE
Heating capacity
308
Water flow rate
Pressure drop
Heating capacity
316
Water flow rate
Pressure drop
Heating capacity
320
Water flow rate
Pressure drop
Heating capacity
628
Water flow rate
Pressure drop
Heating capacity
634
Water flow rate
Pressure drop
Heating capacity
840
Water flow rate
Pressure drop
Heating capacity
847
Water flow rate
Pressure drop
Heating capacity
1250
Water flow rate
Pressure drop
Heating capacity
1260
Water flow rate
Pressure drop
Heating capacity
1575
Water flow rate
Pressure drop
Heating capacity
1885
Water flow rate
Pressure drop
unit
1
2
3
4
5
6
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
KW
l/h
kPa
2,18
191,5
7
2,04
179,6
6,1
2,04
179,6
6,1
3,6
316,5
22,9
3,6
316,5
22,9
5,25
461,3
8,1
5,25
461,3
8,1
6,36
558,7
11,3
6,36
558,7
11,3
7,67
674,2
19,3
9,1
800,2
39,3
1,93
169,7
5,1
1,93
169,7
5,1
1,93
169,7
5,1
3,36
295,1
19,1
3,36
295,1
19,1
4,54
399
6
4,54
399
6
5,98
525,6
9,7
5,98
525,6
9,7
7,29
640,4
16,6
8,62
758,1
33,5
1,72
151,1
3,9
1,73
152,4
3,9
1,73
152,4
3,9
3
263,6
14,6
3
263,6
14,6
4,24
372,6
5
4,24
372,6
5
5,72
502,7
8,3
5,72
502,7
8,3
6,97
612,4
14,4
7,41
651,9
27,5
1,6
140,6
3,7
1,64
155,6
3,8
1,64
155,6
3,8
2,82
247,6
11,9
2,82
247,6
11,9
4
375,9
4,4
4,28
375,9
4,4
5,2
457,2
6,5
5,2
457,2
6,5
6,46
568,1
11,8
7,25
637,9
23,5
1,38
121,3
3
1,45
127,4
3
1,45
127,4
3
2,51
220,3
10,8
2,51
220,3
10,8
3,5
307,7
3,6
3,5
307,7
3,6
4,28
376,5
4,6
4,28
376,5
4,6
5,83
512,6
9,7
6,88
605,4
20,5
1,23
108,1
2,7
1,33
117,3
2,8
1,33
117,3
2,8
2,41
212,1
11,3
2,41
212,1
11,3
3,23
284,2
3,5
3,23
284,2
3,5
4,09
359,5
4,1
4,09
359,5
4,1
4,97
436,7
7,3
6,5
621,7
15,9
7.5
Serie Zefiro
7.3 Summary graphs COOLING OUTPUTS
The following summary graphs indicate heating outputs for the various sizes of fancoil units according to
different air flows. The curves for each size refer to the type of coil: 2 rows, 3 rows, 4 rows, 1 additional
row. The reference thermodynamic conditions are shown below:
Cooling Capacity
Room temperature 27°C
Water temperature 7 °C (In) - 12 °C (Out)
7.6
Serie Zefiro
7.7
Serie Zefiro
7.8
Serie Zefiro
7.9
Serie Zefiro
7.10
Serie Zefiro
7.4 Summary graphs HEATING OUTPUTS
The following summary graphs indicate the heating outputs for the various sizes of fan coil units
according to different air flows. The curves for each size refer to the type of coil: 3 rows, 4 rows, 1
additional row.
The reference thermodynamic conditions are shown below:
7.11
Serie Zefiro
7.12
Serie Zefiro
7.13
Serie Zefiro
7.14
Serie Zefiro
7.15
Serie Zefiro
7.16
Serie Zefiro
Water temperature 70 °C (In) - 60 °C (Out) auxiliary coil
7.17
Serie Zefiro
7.18
Serie Zefiro
7.19
Serie Zefiro
7.5 Power Sound level at rated air flows
The power irradiated by a noise source is a measurement that is characteristic of the source itself and is
not affected by external factors such as the listener’s ear, the place and the distance of the listener. The
data refers to the unit working with the inlet free with casing, grilles and filter
.
Power Sound level Lw
Size
308
316
320
7.20
[Hz]
1
MAX
MED
4
MIN
6
1
MAX
3
MED
5
MIN
1
MAX
3
MED
5
MIN
125
37,6
34,3
32,6
30,3
28,5
28,1
37,0
34,5
31,4
29,5
25,4
24,3
39,6
35,6
33,4
31,4
28,5
28,5
250
41,6
38,2
35,0
32,6
28,4
25,5
41,9
38,5
35,6
32,6
28,5
25,4
45,6
41,7
38,6
36,5
30,5
29,4
500
42,7
38,4
34,5
31,1
24,4
21,4
42,0
37,6
34,5
30,5
24,4
20,3
45,6
42,6
38,5
34,6
27,5
24,5
1000
36,9
32,0
27,8
22,9
9,1
5,4
37,6
32,6
29,4
24,4
11,2
1,1
42,6
37,7
33,5
29,5
19,3
16,3
2000
32,5
26,2
20,8
15,4
7,1
6,1
34,2
25,5
20,4
15,3
11,3
9,2
37,6
31,6
26,4
20,3
9,2
6,1
4000
23,6
16,6
11,5
9,6
7,2
8,1
23,3
17,3
14,3
15,3
13,3
13,3
29,5
22,3
15,3
9,3
5,2
5,2
8000
14,7
11,3
11,4
8,9
10,2
9,1
14,7
12,2
12,2
10,2
10,2
10,2
18,3
13,3
11,2
9,2
11,2
14,3
TOT
[dB(A)]
47,0
43,0
39,0
36,0
29,0
27,0
47,0
43,0
40,0
37,0
31,0
29,0
51,0
47,0
43,0
41,0
33,0
31,0
Serie Zefiro
Power Sound level Lw
Size
628
634
840
847
1250
1260
1575
1885
[Hz]
1
MAX
MED
4
MIN
6
1
MAX
MED
4
MIN
6
1
MAX
3
MED
5
MIN
1
MAX
3
MED
5
MIN
1
MAX
MED
MIN
5
6
1
MAX
MED
MIN
5
6
1
MAX
MED
MIN
5
6
1
MAX
3
MED
MIN
6
125
39,6
36,5
33,5
32,5
29,5
29,5
39,5
36,6
33,6
32,5
29,5
28,5
43,7
39,6
36,6
33,5
27,5
26,4
43,7
39,7
36,6
34,5
29,5
28,5
51,8
48,7
45,7
42,6
36,5
34,5
51,7
48,8
45,7
42,6
36,5
34,5
53,7
51,8
48,7
44,7
41,6
36,6
53,9
52,8
49,8
46,8
43,7
39,7
250
44,6
41,6
37,7
35,5
32,4
29,4
43,7
40,7
38,5
36,5
32,5
31,5
49,7
45,7
42,6
39,6
34,5
33,5
49,7
45,7
42,6
39,6
34,6
35,5
56,9
53,8
50,8
47,7
41,6
39,6
56,8
54,7
51,7
48,7
42,6
39,7
58,9
57,8
54,8
51,7
47,6
43,6
59,8
57,9
54,8
51,8
48,7
44,7
500
45,7
42,6
38,6
35,5
28,4
25,4
45,7
41,7
38,6
35,6
29,4
26,4
49,8
47,6
42,6
38,6
30,6
28,4
49,8
46,8
42,6
38,5
31,4
28,4
56,8
53,8
50,7
48,7
40,6
37,6
56,9
54,7
51,8
49,8
42,6
38,7
59,9
57,9
55,8
51,8
49,7
45,6
59,8
57,8
54,9
51,8
49,8
45,8
1000
39,6
35,5
31,5
28,4
19,3
15,3
39,6
36,5
33,5
29,5
20,4
18,2
44,6
40,6
37,6
35,5
28,4
22,4
44,7
40,6
37,6
35,5
28,4
22,4
53,8
50,7
46,7
42,7
36,5
33,5
53,7
50,7
46,8
43,6
37,5
35,5
55,9
54,7
50,8
47,6
42,7
38,6
57,8
54,9
51,8
47,8
43,7
39,7
2000
36,5
30,5
25,5
21,4
17,2
17,2
36,5
30,5
26,4
21,3
12,2
10,3
46,7
39,7
32,5
26,4
15,2
10,3
43,7
37,6
31,5
25,5
17,3
16,3
51,8
49,7
47,7
44,7
32,5
26,5
51,7
49,7
46,7
43,6
32,4
27,5
54,8
53,7
50,8
47,7
42,6
35,6
54,8
52,8
50,7
47,7
44,7
40,6
4000
25,4
19,4
15,3
14,2
13,3
13,3
25,4
18,3
14,2
9,2
6,2
7,2
34,5
27,5
20,4
14,3
7,2
4,2
34,5
26,4
20,3
15,3
11,3
11,3
48,7
43,6
38,5
32,5
19,4
14,3
46,6
42,6
37,5
32,6
21,4
18,3
49,8
47,7
43,7
38,6
31,6
24,5
53,8
49,7
43,7
38,5
32,5
26,4
8000
16,3
13,2
12,3
13,2
13,3
12,2
16,2
14,3
12,3
12,2
12,2
13,2
22,4
15,3
12,2
9,3
13,2
10,2
21,4
15,3
13,3
11,3
12,2
11,2
39,5
33,5
26,5
20,4
13,2
11,2
36,6
31,5
25,5
20,3
14,3
12,3
41,6
38,6
33,6
27,5
21,3
15,3
42,6
39,6
33,6
28,4
22,4
20,3
TOT
[dB(A)]
50,0
46,0
43,0
40,0
32,0
31,0
50,0
47,0
44,0
41,0
35,0
33,0
56,0
51,0
48,0
44,0
37,0
34,0
55,0
51,0
48,0
45,0
37,0
34,0
64,0
61,0
58,0
55,0
47,0
44,0
63,0
61,0
58,0
54,0
48,0
45,0
66,0
64,0
62,0
59,0
54,0
49,0
66,0
63,0
60,0
58,0
53,0
51,0
7.21
Serie Zefiro
7.6
Pressure Sound level
Pressure Sound level is the perception that a person has in the presence of a noise source. Pressure data are
calculated the sound power measured, supposing that the unit is installed in a 100 m³ room, the reverberation
time is 0.3 s, and the distance between the observer and the fan coil unit is equal to 1.5 m; a reflecting wall
near the appliance is considered. The data refers to the unit working with the inlet free with casing and grilles.
Sound pressure level at 1,5 m from the unit, at min. std speed in a room of 100 m3, reverberating time 0,3 s,
with one reflecting adjacent surface to the unit
Pressure Sound level Lp
TOT
[dB(A)]
Size
[Hz]
125
250
500
1000
2000
4000
8000
1
29,2
33,2
34,3
28,5
24,1
15,2
6,3
38,6
MAX
25,9
29,8
30,0
23,6
17,8
8,2
2,9
34,6
MED
24,2
26,6
26,1
19,4
12,4
3,1
3,0
30,6
308
4
21,9
24,2
22,7
14,5
7,0
1,2
0,5
27,6
MIN
20,1
20,0
16,0
0,7
1,3
1,2
1,8
20,6
6
19,7
17,1
13,0
3,0
2,3
0,3
0,7
18,6
1
28,6
33,5
33,6
29,2
25,8
14,9
6,3
38,6
MAX
26,1
30,1
29,2
24,2
17,1
8,9
3,8
34,6
3
23,0
27,2
26,1
21,0
12,0
5,9
3,8
31,6
316
MED
21,1
24,2
22,1
16,0
6,9
6,9
1,8
28,6
5
17,0
20,1
16,0
2,8
2,9
4,9
1,8
22,6
MIN
15,9
17,0
11,9
-7,3
0,8
4,9
1,8
20,6
1
31,2
37,2
37,2
34,2
29,2
21,1
9,9
42,6
MAX
27,2
33,3
34,2
29,3
23,2
13,9
4,9
38,6
3
25,0
30,2
30,1
25,1
18,0
6,9
2,8
34,6
320
MED
23,0
28,1
26,2
21,1
11,9
0,9
0,8
32,6
5
20,1
22,1
19,1
10,9
0,8
-3,2
2,8
24,6
MIN
20,1
21,0
16,1
7,9
2,3
-3,2
5,9
22,6
1
31,2
36,2
37,3
31,2
28,1
17,0
7,9
41,6
MAX
28,1
33,2
34,2
27,1
22,1
11,0
4,8
37,6
MED
25,1
29,3
30,2
23,1
17,1
6,9
3,9
34,6
628
4
24,1
27,1
27,1
20,0
13,0
5,8
4,8
31,6
MIN
21,1
24,0
20,0
10,9
8,8
4,9
4,9
23,6
6
21,1
21,0
17,0
6,9
8,8
4,9
3,8
22,6
1
31,1
35,3
37,3
31,2
28,1
17,0
7,8
41,6
MAX
28,2
32,3
33,3
28,1
22,1
9,9
5,9
38,6
MED
25,2
30,1
30,2
25,1
18,0
5,8
3,9
35,6
634
4
24,1
28,1
27,2
21,1
12,9
0,8
3,8
32,6
MIN
21,1
24,1
21,0
12,0
3,8
-2,2
3,8
26,6
6
20,1
23,1
18,0
9,8
1,9
-1,2
4,8
24,6
1
35,3
41,3
41,4
36,2
38,3
26,1
14,0
47,6
MAX
31,2
37,3
39,2
32,2
31,3
19,1
6,9
42,6
3
28,2
34,2
34,2
29,2
24,1
12,0
3,8
39,6
840
MED
25,1
31,2
30,2
27,1
18,0
5,9
0,9
35,6
5
19,1
26,1
22,2
20,0
6,8
1,2
4,8
28,6
MIN
18,0
25,1
20,0
14,0
1,9
4,2
1,8
25,6
1
35,3
41,3
41,4
36,3
35,3
26,1
13,0
46,6
MAX
31,3
37,3
38,4
32,2
29,2
18,0
6,9
42,6
3
28,2
34,2
34,2
29,2
23,1
11,9
4,9
39,6
847
MED
26,1
31,2
30,1
27,1
17,1
6,9
2,9
36,6
5
21,1
26,2
23,0
20,0
8,9
2,9
3,8
28,6
MIN
20,1
27,1
20,0
14,0
7,9
2,9
2,8
25,6
7.22
Serie Zefiro
Sound pressure level at 1,5 m from the unit, at min. std speed in a room of 100 m3,
reverberating time 0,3 s, with one reflecting adjacent surface to the unit
Pressure Sound level Lp
Size
1250
1260
1575
1885
[Hz]
1
MAX
MED
MIN
5
6
1
MAX
MED
MIN
5
6
1
MAX
MED
MIN
5
6
1
MAX
3
MED
MIN
6
125
43,4
40,3
37,3
34,2
28,1
26,1
43,3
40,4
37,3
34,2
28,1
26,1
45,3
43,4
40,3
36,3
33,2
28,2
45,5
44,4
41,4
38,4
35,3
31,3
250
48,5
45,4
42,4
39,3
33,2
31,2
48,4
46,3
43,3
40,3
34,2
31,3
50,5
49,4
46,4
43,3
39,2
35,2
51,4
49,5
46,4
43,4
40,3
36,3
500
48,4
45,4
42,3
40,3
32,2
29,2
48,5
46,3
43,4
41,4
34,2
30,3
51,5
49,5
47,4
43,4
41,3
37,2
51,4
49,4
46,5
43,4
41,4
37,4
1000
45,4
42,3
38,3
34,3
28,1
25,1
45,3
42,3
38,4
35,2
29,1
27,1
47,5
46,3
42,4
39,2
34,3
30,2
49,4
46,5
43,4
39,4
35,3
31,3
2000
43,4
41,3
39,3
36,3
24,1
18,1
43,3
41,3
38,3
35,2
24,0
19,1
46,4
45,3
42,4
39,3
34,2
27,2
46,4
44,4
42,3
39,3
36,3
32,2
4000
40,3
35,2
30,1
24,1
11,0
5,9
38,2
34,2
29,1
24,2
13,0
9,9
41,4
39,3
35,3
30,2
23,2
16,1
45,4
41,3
35,3
30,1
24,1
18,0
TOT
[dB(A)]
55,6
52,6
49,6
46,6
38,6
35,6
54,6
52,6
49,6
45,6
39,6
36,6
57,6
55,6
53,6
50,6
45,6
40,6
57,6
54,6
51,6
49,6
44,6
42,6
8000
31,1
25,1
18,1
12,0
4,8
2,8
28,2
23,1
17,1
11,9
5,9
3,9
33,2
30,2
25,2
19,1
12,9
6,9
34,2
31,2
25,2
20,0
14,0
11,9
Calculated NR noise rating
Size
NR
1
2
3
4
5
6
308
316
320
628
634
840
847
1250
1260
1575
1885
30
27
20
15
10
8
30
27
20
15
10
9
33
29
24
20
12
9
34
29
24
20
12
10
35
29
24
21
14
12
39
33
28
25
18
14
39
33
28
25
18
14
44
42
40
37
30
25
45
42
40
36
30
25
50
45
43
40
36
30
50
47
45
40
37
33
7.23
Serie Zefiro
7.7
Working with water - glycol
7.7.1
7.7.2
Concentrations of glycol
Glycol is a substance that when added to water, prevents hydraulic circuits from freezing and breaking.
The following table indicates the percentages (in weight and volume) of glycol to add to the water in
order to reduce its freezing point.
Freezing point °C
% in weight
% in volume
0
-5
-10
-15
-20
-25
-30
0
10
20
28
34
40
44
0
9,6
19,4
27,4
33,4
39,6
43,7
Performance variations with water - glycol
The water/glycol mixture has higher specific weight and viscosity values than natural water and such as
to affect the heat output of the fan coil unit.
To obtain the same performance as natural water, the rate of flow of the mixture and the head of the
pumps must normally be increased in order to make up for the greater pressure drop.
The following two graphs indicate the corrective pressure drop and rate of flow coefficients
Pressure drop correction coefficient
50%
40%
30%
10%
0%
7.24
20%
% glicole
in weight
Serie Zefiro
Water/glycol mixture rate of flow correction coefficient
x
% glicole
in weight
7.25
Technical data shown in this booklet are not binding.
The Company shall have the right to introduce at any time
whatever modifications considered necessary to the
improvement of the product