HRV2000i/e Installation, Operation and Maintenance

Transcription

HRV
Heat Recovery Ventilators
Installation, Operation and Maintenance Instructions Manual
Capacity: 1,200 to 2,800 cfm
Model: HRV2000i/e
©1999 Venmar CES
Table of Contents
Nomenclature.......................................................................................................................................................................3
Safety Considerations..........................................................................................................................................................5
General Information............................................................................................................................................................5
Recommended Spare Parts............................................................................................................................................5
Inspection on Arrival......................................................................................................................................................6
Unit Application Limitations.........................................................................................................................................6
Installation............................................................................................................................................................................6
Unit Location Requirements..........................................................................................................................................6
Ceiling Mount (HRV2000i).............................................................................................................................................7
Surface Mount (HRV2000e)...........................................................................................................................................7
Roofcurbs Supplied by Venmar CES..............................................................................................................................8
Roofcurbs Supplied by Others.......................................................................................................................................8
Rigging and Lifting the Unit.........................................................................................................................................9
Exhaust Dampers for Indoor Units................................................................................................................................9
Field Fabricated Ductwork..........................................................................................................................................10
Drain Connections........................................................................................................................................................11
Hood Installation.........................................................................................................................................................11
Access Panel Handles...................................................................................................................................................11
Internal Packaging.......................................................................................................................................................12
Systems Integration.....................................................................................................................................................12
Electrical Connections..................................................................................................................................................13
Start-up...............................................................................................................................................................................14
Pre Start-up Procedure................................................................................................................................................14
Start-up Procedure.......................................................................................................................................................14
Frost Control.................................................................................................................................................................16
Sequence of Operation................................................................................................................................................16
Airflow Balancing........................................................................................................................................................17
Maintenance.......................................................................................................................................................................17
Air Filters......................................................................................................................................................................17
Drain Pans and Interior of Unit...................................................................................................................................18
Fans and Motors...........................................................................................................................................................18
Flat Plate Heat Exchanger...........................................................................................................................................19
Testing and Replacement of the Damper Actuator...................................................................................................20
System Operation Check..............................................................................................................................................20
Appendix A: Equipment Data...........................................................................................................................................21
Appendix B: Dimensional Drawings..................................................................................................................................22
Appendix C: Typical Installation........................................................................................................................................24
Appendix D: HRV2000e Roofcurb.....................................................................................................................................25
Appendix E: Installing the Hoods and Rigging the Unit..................................................................................................26
Appendix F: Terminal Control Diagrams..........................................................................................................................27
Appendix G: Effect of Undersized Straight Duct and Elbows on Forward Curved Fans................................................32
Appendix H: Drain Connections........................................................................................................................................33
Appendix I: Electrical Data................................................................................................................................................34
Appendix J: Components...................................................................................................................................................35
Appendix K: HRV2000i/e Start-up Form and Checklist....................................................................................................37
Appendix L: Troubleshooting............................................................................................................................................41
Appendix M: Maintenance Summary Chart.....................................................................................................................42
Manufacturer reserves the right to discontinue or change specifications or designs without notice or obligation.
VCES-HRV-IOM-2C – HRV2000i/e
2
Nomenclature
HRV2000i Indoor Unit Nomenclature (1,200–2,800 cfm)
1
2
3
4
5
6
1. FROST CONTROL
D – Recirc defrost1
E – Exhaust only2
C – Non-defrost
N – Non-defrost, no wall control compatibility3
2. VOLTAGE/SPEED
B – 208/120/1/60 – one-speed4
C – 230/120/1/60 – one-speed4
D – 208/3/60 – one-speed
E – 230/3/60 – one-speed
F – 460/3/60 – one-speed
G – 575/3/60 – one-speed
H – 208/1/60 – two-speed
I – 230/1/60 – two-speed
N – 208/3/60 – VFD6/7
O – 230/3/60 – VFD6/7
P – 460/3/60 – VFD6/7
3. ENERGY RECOVERY
P – Poly core
A – Aluminum core
H – HM core
4. INTERNAL PROTECTION
1 – 1” insulation, single wall
2 – 1” insulation, double wall
3 – Corrosion resistant 1” insulation, double wall
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8
9
10
11
11. ACCESS DOOR
S – Standard door
F – Reverse door
10. FILTRATION
S – Standard filtration
H – High efficiency filtration
9. EXTERNAL DISCONNECT
F – Fused disconnect switch5
N – Non-fused disconnect switch5
X – No disconnect switch
8. DOOR FASTENERS
S – Standard filter door c/w screws
D – Deluxe filter door c/w quarter turn
fasteners
7. OUTSIDE AIR DAMPER
1 – Insulated motorized
2 – Insulated spring return
3 – No damper
6. EXTERNAL FINISH
S – Standard galvanized package
W – White pre-paint package
C – Corrosion resistant package
5. SENSOR CONTACTS
D – Dirty filter contacts
X – No contacts
Notes:
1 When ordering recirc defrost, you must order an insulated outside air damper. Recirc defrost option includes recirculation dry contacts for unoccupied mode and an
exhaust backdraft damper for field installation.
2 Outside air damper is required.
3 No dampers required.
4 Requires a neutral wire with L1 and L2.
5 Fused/non-fused disconnect switch is field installed.
6 All VFD options include one controller per motor.
7 Minimum motor size is 1 hp.
©Venmar CES 1999. All rights reserved throughout the world.
Illustrations cover the general appearance of Venmar CES products at the time of publication and Venmar CES reserves the
right to make changes in design and construction at any time without notice.
CES Group, LLC d/b/a Venmar CES furnishes equipment pursuant to its then-current Terms and Conditions of Sale and Limited Warranty, copies of which can be found under the Terms & Conditions of Sale and Warranty link at www.ces-group.com.
Extended warranties, if any, shall be as offered and acknowledged in writing by Venmar CES.
3
HRV2000e Outdoor Unit Nomenclature (1,200–2,800 cfm)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
1. FROST CONTROL
D – Recirc defrost1
E – Exhaust only2
C – Non-defrost
N – Non-defrost, no wall control
compatibility3
14. FILTRATION
S – Standard filtration (30%)
H – High efficiency filtration
2. VOLTAGE/SPEED
B – 208/120/1/60 – one-speed4
C – 230/120/1/60 – one-speed4
D – 208/3/60 – one-speed
E – 230/3/60 – one-speed
F – 460/3/60 – one-speed
G – 575/3/60 – one-speed
H – 208/1/60 – two-speed
I – 230/1/60 – two-speed
N – 208/3/60 – VFD7/8/9
O – 230/3/60 – VFD7/8/9
P – 460/3/60 – VFD7/8/9
12. SUPPLY DISCHARGE
D – Down supply discharge
E – End supply discharge
3. ENERGY RECOVERY
P – Poly core
A – Aluminum core
H – HM core
4. INTERNAL PROTECTION
1 – 1” insulation, single wall
2 – 1” insulation, double wall
3 – Corrosion resistant 1” insulation, double wall
5. SENSOR CONTACTS
D – Dirty filter contacts
X – No contacts
6. EXTERNAL FINISH
G – Grey pre-paint package
C – Corrosion resistant package
13. RETURN AIR
B – Bottom return air
E – End return air
11. HOODS
H – Intake/exhaust hoods
X – No hoods6
10. EXTERNAL DISCONNECT
F – Fused disconnect switch5
N – Non-fused disconnect switch5
X – No disconnect switch
9. DOOR FASTENERS
S – Standard blower door and filter door
c/w metal handles and screws
D – Deluxe blower door and filter door
c/w polyamide handles and quarter
turn fasteners
8. EXHAUST AIR DAMPER
1 – Backdraft (low leak)
2 – Non-insulated motorized (low leak)
3 – Insulated motorized (low leak)
4 – No damper
7. OUTSIDE AIR DAMPER
1 – Non-insulated motorized (low leak)
2 – Insulated motorized (low leak)
3 – Insulated spring return (low leak)
4 – No damper
Notes:
1 When ordering recirc defrost, you must order an insulated outside air damper. Recirc defrost option includes recirculation dry contacts for unoccupied mode.
2 Outside air damper is required.
3 No dampers required.
4 Requires a neutral wire with L1 and L2.
5 Fused/non-fused disconnect switch is field installed.
6 Must order hoods when ordering dampers.
7 All VFD options include one controller per motor.
8 Minimum motor size 1 hp.
9 For selection below −22ºF [−30ºC], please consult factory.
4
Safety Considerations
Warning, Caution and Important notes appear throughout
this manual in specific and appropriate locations to alert
Installing Contractors, maintenance or service personnel of
potential safety hazards, possible equipment damage or to
alert personnel of special procedures or instructions that
must be followed as outlined below.
WARNING
!
Identifies an instruction which, if not followed, might cause
serious personal injuries including possibility of death.
CAUTION
Hazards may exist within this equipment because it contains electrical and powerful moving components. Only
qualified service personnel should install or service this
equipment. Untrained personnel can perform basic maintenance such as maintaining filters. Observe precautions
marked in literature and on labels attached to the unit.
Follow all safety codes.
!
WARNING
Disconnect the main power switch to the unit before performing service or maintenance. Electric shock can cause
personal injury or death.
Identifies an instruction which, if not followed, might severely damage the unit, its components, the assembly or
final installation.
IMPORTANT
Indicates supplementary information needed to fully
complete an instruction or installation.
General Information
This manual is designed to provide general information
on the common operation of all standard and optional
components that may have been installed in the unit. Note
that some sections of this manual may not apply to your
unit. This manual has been designed for general purpose
and describes options offered by Venmar CES that could
be included in the unit. Consult the manual from the
Component Manufacturer if more detailed technical information about a specific component is required.
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•
Instructions on certain options, such as VFD’s which
are factory installed, are placed inside a Ziploc bag
along with the IOM and located inside the unit.
Instructions for options or accessory items which are
shipped loose for field installation are included with
the item.
The electrical schematic is attached to the inside of
the control panel.
See Appendix A for more detailed equipment data.
Recommended Spare Parts
Spare parts should be ordered at the time the installation is accepted by the Owner. Spare parts will reduce
the down time in the event of a failure. The list of spare
parts outlined below is considered minimal. Installation in
remote locations or when the operation of heating equipment is essential may require more spare parts than listed.
Please contact the Service Department at Venmar CES for
recommendations.
Minimum spare parts include:
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Two sets of fuses
One matching set of fan belts
One set of filters
5
Inspection on Arrival
Inspect the equipment exterior and interior for any damage on arrival that may have occurred during unit shipment and for shipped loose parts. Ensure that there is
no damage to any protruding exterior components or to
internal components such as fans, motors, dampers, flat
plate heat recovery module, insulation and structures. File
a claim with the shipping company if the unit is damaged.
Check the packing slip against all items received. If any
items are missing, sign the carrier’s bill of lading with the
notation “Shipment Received Less Item #___”. Contact
the factory immediately if damage is found. No return
shipment will be accepted without authorization.
IMPORTANT
The hoods for outdoor units are not installed from the
factory for shipping purposes and must be installed on
site. Hoods can be installed prior to rigging the unit or
after the unit is installed. See Hood Installation and Rigging and Lifting the Unit.
IMPORTANT
The exhaust dampers for indoor units are not installed
from the factory and must be installed on site. See Exhaust Dampers for Indoor Units.
Unit Application Limitations
!
WARNING
Venmar CES equipment is not designed to be used for
temporary heating, cooling and/or ventilation during
construction.
Using Venmar CES units for temporary ventilation during construction is subject to the unit warranty terms and
should be reviewed carefully before proceeding, as this
may void the standard warranty conditions.
Fine dust, larger particulate matter, solvents, varnishes and
other chemicals may cause filter clogging and elevated
cabinet pressures, higher power consumption and possible
irreparable damage to the flat plate heat recovery module,
which could reduce energy recovery performance of the
plate, and damage to other components. Potential damages include, but are not limited to, these examples.
Installation
Unit Location Requirements
Consult local building codes and electrical codes for special installation requirements and note additional requirements listed in this manual. In choosing the installation
location of the unit, consider the following factors:
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The HRV2000i unit is intended for indoor installation within a suspended ceiling space or mechanical
room.
The HRV2000e unit is intended for outdoor installation on a rooftop with a factory or field supplied
roofcurb.
The unit should be installed to allow easy access for
maintenance and for systems operation. See Appendix B for dimensions and recommended service and
maintenance clearances. Additional installation clearances on indoor units are provided in Appendix C.
When possible, mount the unit over an unused area
such as a hallway. Although fans and motors are
mounted on vibration pads or isolators and are dynamically balanced, the unit will be even less perceptible if positioned away from busy offices.
Locate the unit in an area requiring the least amount
of ductwork and directional changes to allow opti-
•
•
mum performance, to reduce pressure loss and to
use less electricity to achieve proper ventilation. Ductwork must be in accordance with ducting mechanical
rules to prevent sound issues and system effects.
In cold climates with −5°F [−20°C] design, an indoor
unit must be mounted in a dry area (not exceeding
30% RH) to avoid water condensation on the cabinet
during winter operation. Alternatively, accommodation must be made for condensation on the cabinet
exterior. Indoor units should be mounted in a heated
space to prevent drain lines from freezing. Do not
mount units in an area where exposure to electrical
panels or other hazards will occur.
On indoor units a mounting location close to an exterior partition will minimize the length of insulated
ductwork required. Appendix C illustrates ductwork
through exterior partitions. These should be separated by a minimum of 10 feet [3,000 mm] for Class
2 exhaust or as required by ASHRAE 62.1 to avoid
outside cross contamination.
6
•
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•
•
The fresh air intake hood must be positioned away
from sources of contamination such as hot chimneys
or kitchen exhaust vents.
Fresh air intake must also be positioned in a direction
opposite to that of prevailing winds to reduce entry
of snow or rain.
The unit should be mounted on a level foundation to
allow condensation to flow into internal drains (when
provided). The foundation must provide adequate
continuous support to minimize deflection of the unit
base frame to not more than 1/16” [1.6 mm] over
entire length. In addition to these recommendations,
a Structural Engineer must be involved to properly
size supporting structural elements.
When floor mounting the unit indoors, if drain connections are required, mount the unit on a housekeeping pad of sufficient height to allow for drain
trap height and condensate lines to slope toward the
building drain, install condensate pumps to reduce
height of housekeeping pads or drill holes in the concrete pad or mechanical room floor for sufficient trap
height.
•
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•
When mounting the unit on a roofcurb check the
height from the finished roof to the bottom of the
intake hood. Consult with Local Authorities or your
building code for minimal intake hood height for the
water-tight height from and above the finished roof
and, in snow prone areas the buildup of snow, to
determine the height of the roofcurb. If additional
height is required from the finished roof to the top
of the roofcurb, to the bottom of the intake hood,
if other than level or if seismic mounting is required,
custom roofcurbs must be field supplied and specified.
When mounting the unit on a roofcurb, access to the
bottom of the unit is required for connection of drain
lines and drain trap and to allow heated air from the
space to prevent drain lines from freezing.
When mounting the unit on the roof check for possibility of exhaust re-entrainment which can be caused
by placing the unit in an equipment well or within a
recirculation zone created by the interaction of the
wind and resistance of the building, in which case
extension of the exhaust discharge or outdoor intake
may be required.
Ceiling Mount (HRV2000i)
The unit must be mounted level and may be hung with
threaded rod (field supplied) through the protruding frame
at the base of the unit. Hole centers are shown in the
overall dimensional drawings in Appendix B. Do not block
access to panels as indicated in Appendix C. Rubber or
seismic vibration isolation may be required in some regions
(field supplied and specified).
Surface Mount (HRV2000e)
The unit must be mounted level and may be supported
on a factory or field supplied perimeter roofcurb. If the
unit must be secured to the roofcurb, fasteners may be attached to the base frame at the lifting points. All fasteners
and mounting hardware is field supplied and specified.
7
Roofcurbs Supplied by Venmar CES
Roofcurbs supplied by Venmar CES should be mounted as
follows:
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The roofcurb is shipped knocked-down with assembly hardware and instructions provided. The roofcurb
must be field erected, assembled and set in place by
the Installing Contractor.
Roofcurb dimensions are submitted with the unit
mechanical drawings which can also be found in Appendix B and Appendix D. Outdoor air intake, supply
discharge, return air inlet and exhaust air discharge
opening locations are identified in the equipment
submittals or where alternative locations are available
from the nomenclature in the submittals or on the
unit nameplate.
After the roofcurb has been assembled, ensure that
the roofcurb dimensions suit the unit for which it is
designated.
The cross members must be positioned as per the
roofcurb drawing to properly support the ductwork
plenums for bottom vertical return and supply connections and for stability.
Ensure that the assembled roofcurb is square, plumb
and level to within 1/16” [1.6 mm] over the entire
length. The building structure must provide continuous structural support to the full perimeter of the
roofcurb and may be shimmed.
The roofcurb must be fastened to the building
structure.
The Installing Contractor is responsible for making
the roofcurb water-tight by caulking all roofcurb
joints.
IMPORTANT
The following items must be completed prior to setting
the unit on the roofcurb:
•
•
•
•
The roofcurb roofing must be completed including
insulation, cant strip, flashing and counter-flashing.
Access to the bottom of the unit is required when
mounting the unit on a roofcurb for connection of
drain lines, drain trap and to allow heated air from
the space to prevent drain lines from freezing.
Vertical ductwork must be attached to the roofcurb and building structure, not to the unit. The
ductwork can be flanged over at the top of the
perimeter opening cross members and/or curb for
an air-tight seal. See Appendix D for information on
roofcurb, installation and dimensions.
Remove the length of 3/8” [9.5 mm] polyvinyl gasket strip with adhesive backing supplied with the
roofcurb and apply a continuous strip to the top
perimeter of the roofcurb and ductwork opening
flanges/cross members for an air- and water-tight
seal as shown in Appendix D.
IMPORTANT
The gasket between the unit and the roofcurb is critical
for an air- and water-tight seal. An improperly applied
gasket can result in air and water leakage and poor unit
performance. Position the unit with equal spacing all
around between the roofcurb and inside unit base rail as
it is being lowered.
Roofcurbs Supplied by Others
Roofcurbs supplied by others must be designed with the
same dimensions and cross member arrangement as per
Venmar CES roofcurb drawings and must be designed to
evenly withstand perimeter and cross section static loads.
IMPORTANT
Venmar CES is not liable for any damages, costs or other
issues arising from roofcurbs supplied by others.
8
Rigging and Lifting the Unit
IMPORTANT
The hoods for outdoor units are not installed from
the factory and must be installed on site. They can be
installed prior to rigging the unit or after the unit is installed. Hoods are shipped on top of the unit. When rigging the unit, make certain that the hoods are secured
and are not damaged by the spreader bars. See Appendix
E for hood installation.
Units shall be lifted by cables attached to all the lifting
points provided on the unit base as shown in Appendix E.
When lifting the outdoor unit use spreader bars and cables
to prevent damage to the unit casing. Provide additional
blocking and coverings (as required) to prevent damage
to the unit finish and/or components. The spreader bars
will help to maintain a certain distance between the cables
and the unit. Venmar CES will not be responsible for any
damage caused to the unit casing during the lifting process. The lifting point must be at the center of gravity to
ensure that the unit is level during hoisting and prior to
setting. When commencing to hoist, take up the slack in
the hoisting cables slowly and gradually increase the cable
tension until the full unit weight is suspended. Avoid sudden, jerking movements. Do not permit the unit to be suspended by the lifting lugs for an extended period of time.
For weights and overall dimensions see Appendix A.
CAUTION
All panels must be in place when rigging.
Exhaust Dampers for Indoor Units
An exhaust gravity backdraft damper is included for indoor
units with the recirculation defrost option and shipped
loose for field installation. An exhaust gravity backdraft
damper or a motorized exhaust damper is available as
an accessory for other defrost options or additional use
and shipped loose for field installation. Gravity backdraft
dampers are for horizontal airflow installations only.
Dampers are non-insulated, for installed in duct installation and are ¼” [6 mm] smaller “outside of frame” than
the duct size listed. An access panel in the duct on the
upstream left hand side (facing the airstream) for the motorized damper is required for access to the actuator and
linkage which is mounted and located in the airstream.
The damper should be mounted sufficiently far enough
downstream from the exhaust fan discharge to avoid system effect added pressure losses. A straight length of duct
same size as the unit exhaust discharge and length as indicated in Field Fabricated Ductwork followed by a gradual
transition to “Duct Size” for damper and as shown in Appendix C is recommended.
Wiring for the 24V motorized exhaust air damper must
be provided and completed in the field by the Installer.
A 24V, 20 VA power supply is available for the motorized exhaust damper from the unit as shown in Appendix
F, Figure F3. Run the +24V wire connection through the
“FF” fan interlock contacts to break power to the damper
when the exhaust fan is not running as shown in Figure 3
for it to spring return closed.
Table 1: Exhaust Dampers for Indoor Units
Model
Venmar CES
Part Number
067117
HRV2000i
067119
Duct Size
(H x W)
Damper Type
Backdraft (pressure
open/gravity
closed)
12” x 26”
Non-insulated
[305 x 660 mm]
motorized (24 VAC
power open/spring
return closed)
9
Field Fabricated Ductwork
On outdoor units with bottom vertical duct connections,
secure all ducts to the roofcurb and building structure
prior to unit installation. See Roofcurbs Supplied by Venmar CES. Do not secure ductwork to the unit.
On other duct connection locations, make connections to
the casing by applying caulking around the connection
and screwing flanged ducts directly to the casing and/or
flange with self-drilling sheet metal screws. It is important
to seal all duct connections to prevent air leakage and system performance problems. Ductwork must be supported
by the building structure. For unit and duct opening sizes
refer to submittal documents or see Appendix B.
IMPORTANT
Ensure that the fasteners used to make duct connection
do not interfere with fans or dampers in the unit.
Transitions may be required to make connection with ductwork that is properly sized for minimum noise and pressure loss as shown in Appendix C.
Electric pre-heat in the outdoor air duct, if used as frost
prevention on indoor units, must be installed at a minimum distance from the unit of 24” [610 mm] as shown in
Appendix C.
Insulate and weatherproof all external ductwork, joints
and roof openings with counter-flashing and mastic in
accordance with applicable codes. Ductwork running
through roof decks must comply with local fire codes.
Both duct connections to outside must be insulated to
avoid condensation and heat loss. Ducts passing through
unconditioned spaces must be insulated and covered with
a vapor barrier. Flexible connectors should be installed
close to the unit in the duct leading to occupied spaces to
minimize noise transmission.
Duct Design Considerations
The discharge ductwork immediately downstream from
the forward curved fan is critical for successful applications. Poorly designed ductwork can degrade fan performance and contributes to excessive pressure drop and
noise.
When designing ductwork in the field, it is important to
use a straight discharge duct of the same dimension as
the fan outlet connection to obtain maximum fan performance. The straight section of ductwork helps the airflow
to develop a uniform velocity profile as it exits the fan and
allows the velocity pressure to recover into static pressure.
See Figure 1.
Figure 1: Duct design
Centrifugal fan
Cutoff
Discharge duct
100% effective duct length
2½ diameters at 2,500 FPM
For 100% recovery of velocity pressure into static pressure, the straight portion of the discharge duct must be at
least 2.5 times the ‘Equivalent Duct Diameter’ of the rectangular duct connection up to 2,500 fpm outlet velocity
or less. Add one duct diameter for each additional 1,000
fpm outlet velocity to the length of the straight portion of
discharge duct. The equivalent duct diameter is equal to
square root of (4ab/Pi) where ‘a’ and ‘b’ are the rectangular dimensions of the fan discharge opening.
Refer to Appendix G to determine the effect of undersized
straight sections of duct with or without duct elbows
within the 100% minimum effective duct length (reference: AMCA publication 201, Fans and Systems).
Example:
For an HRV2000e with a supply flow rate of 2,000 cfm
with a bottom supply fan discharge connection with rectangular connection of ‘a’ = 9.5” and ‘b’ = 14” the length
of straight duct is 17” before entering a 90 degree elbow
is reached in position C as shown in Figure G1.
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•
The equivalent duct diameter is equal to square root
of (4 x 9.5 x 14/Pi) = 16.934”
The outlet velocity is equal to
2,000 cfm/(9.5 x 14/144) = 2,165 fpm
Therefore, the minimum length of straight duct for
100% effective recovery needed would be equal to
16.934 x 2.5 = 43” rounded up to the next whole
inch
The effective straight duct was 17” long or
17/43 x 100 = 40% effective
Using Table G1, with elbow position C and 40% effective duct length, would be using a curve value,
(50−40)/(50−25) = 0.4 of the way between the ‘S’
curve at 50% and ‘P−Q’ curve at 25% for SWSI fans
From Appendix A, the HRV2000 has DWDI fans
therefore following note ‘C’ below Figure G2 would
use a 1.0 multiplier for the DWDI fans on the pressure drop curves in Figure G2
From Figure G2, at 2,165 fpm and
1.0 x (0.4 x ((P−Q)−S)+S) curve values added pressure
drop is 1.0 x (0.4 x (0.5−0.23)+0.23) = 0.34” w.c.
which must be added to the external pressure drop
for the unit
10
Drain Connections
Drain fittings are packaged inside the unit, fastened to the
drain pan. These require field installation and need to be
sealed with silicone to prevent leaking. Four connections
must be made at the bottom of the unit, which will accept
four ¾” [19 mm] NPT couplers (field supplied). Drain fittings provided with the unit will accept a ¾” [19 mm] NPT
coupler.
A water trap must be provided in the drain line to prevent
sewer gases from entering the unit. Ensure adequate slope
to the drain line to allow for good drainage (¼” per foot
[6 mm per 305 mm] recommended minimum). See Appendix H.
Drain lines must be field fabricated and supplied. Do not
solder connections when they are attached to the unit because high temperatures may damage the plastic fittings
on the unit.
IMPORTANT
Consult local building code for plumbing requirements in
your area.
Hood Installation
Intake and exhaust hoods for these models are shipped
separately from the unit. To install hoods, see Appendix
E. A quick connect for the damper motor is provided to
connect to the main body of the unit. Make sure that all
the screws are secured to maintain proper support and to
keep the seals water-tight.
Access Panel Handles
IMPORTANT
Figure 2: Access panel
Securing door fasteners too tightly has negative effects
on the door gasket and should be avoided.
Handles for access panels are provided but must be installed on site. Handles and fasteners are secured inside
the unit. Remove from packaging and install according to
Figure 2.
Access panel
Metal or
polyamide
handle
#10 x ¾ Screw
11
Internal Packaging
Remove access panels and all packaging from the unit.
Note that the drain fittings are packaged and located
inside the unit as may be other remote mounted options
and/or accessories. Removal of all packaging is critical.
Systems Integration
Forced Air System
When the Heat Recovery Ventilator (HRV) is installed in
conjunction with a forced air system, the air handler and
the network of ducts associated with it are used to distribute fresh air inside the building. If this type of system
is used, the main fan of the air handler must operate continuously when the unit is on. Fan interlock (see Figure 3)
can be connected in the unit control box to the microprocessor control board terminals J3-1 and J3-2. The controller makes relay contact between these terminals when the
unit is operating.
Figure 3: Fan interlock
Fresh air from the HRV should be introduced into the return duct of the air handler at a point no less than 6 feet
[1,829 mm] upstream of the air handler. The duct connection for return air to the HRV should be made on the
return air duct at least 2 feet [610 mm] upstream of the
fresh air duct connection.
Separate Systems
Select locations for exhaust grilles and supply diffusers
to provide effective ventilation and avoid short circuiting
airflows through the space. Adjustable dampers should be
provided at every grille and diffuser to make balancing of
the system possible.
Backdraft Damper (HRV2000i)
48644 power
control board
1
1
6
4
9
7
JU1G – Intermittent standy (IS)
JU1F – Extended defrost
2
N/C
3
COMM.
N/O
J1
J4
J2
1
2
3
F
F
I OC OL Y
A backdraft gravity damper is supplied with recirculation defrost units to be installed in the exhaust air outlet
duct on indoor units. This damper is necessary to prevent
air from entering the building through the exhaust duct
when the unit is in recirculation defrost mode. See Exhaust
Dampers for Indoor Units for further installation details.
Mount the damper in the exhaust air to outside duct as
shown in Appendix C and Field Fabricated Ductwork for
fan outlet duct considerations.
JU1
+++++ ++
+++++ ++
ABCDEFG
R
G
B
J3
Fan interlock
contacts
12
Electrical Connections
!
WARNING
When installed, the unit must be electrically grounded in
accordance with local codes or, in the absence of local
codes, with the National Electrical Code, ANSI/NFPA70,
and/or the Canadian Electrical Code CSA C22.1. Unit
cabinet must have an uninterrupted, unbroken electrical
ground to minimize the possibility of personal injury if an
electrical fault should occur. Failure to follow this warning could result in the Installer being liable for personal
injury of others.
Power Supply
Units are available in all voltages and phases. Please see
Appendix I for electrical data. Check nameplate for correct
power supply requirements. These units do not have a factory installed disconnect switch. An optional disconnect
switch is available if requested and is shipped separately
for field installation. If disconnect is field supplied, provide and install disconnect as per NEC/Canadian Electrical
Code. Use copper conductors only.
All field wiring must comply with NEC and local requirements. In Canada, electrical connections must be in accordance with CSA C22.1 Canadian Electrical Code Part One.
Field Connection
Location of required wire connections are shown in Appendix B. A wiring diagram is located on the control box
lid inside the unit. See Appendix J for location of components and control box. For indoor units a junction box or
disconnect switch must be field supplied where power
supply connections are made. For outdoor units a power
line input connection (see Figure 4) is located on the outside of the unit with knockout. A field installed disconnect
switch must use a liquid-tight connector between the disconnect switch and the outside panel of the unit eliminating any water penetration into the control box.
Figure 4: High voltage field connection
Rooftop unit
(cutaway shown)
¾” locknut
(as seen from
inside the unit)
A low voltage remote control wiring interface is provided
on the unit for starting, controlling sequence and monitoring. The Installer must provide wiring for the controls that
may be supplied optionally or by others to the interface
terminals. For indoor units the low voltage terminal strips
wiring interface is located on the outside of the unit enclosure. See Appendix B for location of low voltage terminals/
connection. For outdoor units the low voltage remote
wiring can be field run through the roofcurb, return air
ductwork and return air opening to the interface terminals
located inside the unit control box.
The controls available for the HRV, their reference and
type of connection are listed below. For more information
on the controls, wiring and terminal connections see Appendix F. The wall control is 12 VDC; other terminals are
24 VAC or dry contact control.
Note:
1. Check the Controls and/or the Control Schematic
sections of the specification, optional and accessory
items shipped loose with or inside the unit for a list
of optional controls or wiring connections required to
the unit.
2. For the unit to start, both ventilation and fan speed
calls are required except as noted. For ventilation
call the remote wall control, occupied timer/sensor,
manual switch or BMS contacts can be used. For fan
speed call the remote fan control, CO2 ventilation
control, manual switch or BMS contacts can be used.
Wall Control Connection
• Four-wire LVT 24 gauge minimum (12 VDC).
Occupied Timer/Sensor Connection
• Makes a dry contact to operate unit. Timer requires
24 VAC. Do not use timer with Xtra or Aqua Air wall
control.
Remote Fan Control
• Requires single pole, double throw switch for
Low–Common–High.
• Makes dry contact for speed setting.
Dirty Filter Sensor
• Makes dry contact.
CO2 Ventilation Control
Unoccupied Recirc Contacts
• 24 VAC.
Smoke Detector
¾” x 1-3/8” liquid-tight connector
¾” locknut
Line disconnect switch
(cutaway shown)
13
Start-up
Pre Start-up Procedure
Before requesting start-up, check that the installation is
complete and unit is ready. Complete the pre start-up
check list below and in Appendix K for each unit as items
are checked. For torque values on set screws, belt tension,
belt alignment, etc., check under Maintenance.
1. Check the electrical disconnect is in the ‘Off’ position.
2. Open access doors and check the unit for shipped
loose parts, obstructive packaging, objects near or
in fans, dampers, flat plate heat exchanger, etc. Remove all red tie down bolts on fan assemblies.
3. Check that the fans and motors are rotating freely.
4. Check fan wheels and drive set screws. Tighten if
required.
5. Check belt alignment and tension.
6. Check that the air filters are installed and clean.
Replace if necessary. If filters are equipped with
optional differential pressure switch, check desired
setpoint does not exceed factory setting of 0.8”w.c
[200 Pa].
7. Check damper and linkages for free movement.
8. Check that ductwork is connected and complete.
9. Check that condensate drain connections have been
trapped, installed correctly and filled.
10. Check that all shipped loose or field supplied components have been correctly installed and wired.
11. Check that all power supplies and control wiring
have been inspected and approved by the Local Authorities having jurisdiction.
12. Check all factory and field wiring connections for
tightness. Tighten if necessary.
13. Check that all fuses are properly installed in holders.
14. Check the voltage at the disconnect switch against
the nameplate and against phase-to-phase readings
on three-phase. If the voltage is not within 10% of
rated or 2% of phase-to-phase, have the condition
corrected before continuing start-up.
15. Check that all field piping, venting and wiring installation and connections for the heating and cooling
options and/or accessories (if equipped) have been
completed and tested.
16. Check and adjust thermostat setpoints.
Start-up Procedure
To ensure proper operation of each unit, qualified personnel should perform the start-up and complete the checklist
below and the start-up form in Appendix K for permanent
record. A completed checklist will provide valuable information for personnel performing future maintenance.
IMPORTANT
A completed copy must be sent back to the factory for
warranty validation and for factory assistance.
All units are factory run tested. Fans are set up to run correct when power is connected. If any one fan is running
backwards disconnect power and switch two leads (on
three-phase power) to ensure proper rotation and avoid
damage.
All units are dynamically balanced prior to shipping. However, there are certain operating speeds at which the
natural frequency of the rotating member is attuned to
the natural frequency of the unit panels, which may cause
vibrations.
These vibrations can tend to reinforce each other in such
a way that excessive vibration can be encountered under
certain conditions. It is difficult to predetermine this condition because it is affected by the mounting arrangement
and the various modules used to make up the assembly
and the duct work connections.
If the above check reveals no apparent discrepancies and
vibration is still present, the speed of the unit should be
lowered approximately 10% to determine if the natural
frequency is causing the vibration.
Under no condition should the unit(s) be allowed to continue to operate when excessive unit vibration is apparent.
Permanent damage may result which will not be covered
under the warranty if the unit is allowed to continue in
operation when excessive vibrations are evident.
1. Before proceeding complete the pre start-up checklist.
2. For the unit to start when the disconnect switch is
turned on a ventilation and fan speed call is required.
a. Check for ventilation call from the remote wall
control connection, occupied timer/sensor connection or BMS, whichever is used. See Appendix F for which terminal connections should be
closed (contacts made) once power is connected.
Circle which device is used.
b. Check for either low speed or high speed (if
equipped) call from the remote fan control, CO2
ventilation control or BMS, whichever is used.
See Appendix F for which terminal connections
should be closed (contacts made) once power is
connected. Circle which device is used.
14
c. If ‘a’ and ‘b’ are not connected, start can be
accomplished by using temporary external dry
contacts or a jumper wire closing occupied timer
contacts 3 and 4 (left side) plus low speed contacts 3 and 4 (right side) or high speed contacts
4 and 5 (right side). Check if temporary dry contacts or a jumper wire are used.
!
WARNING
Only low or high speed contacts must be closed at any
one time, never both using dry contacts/jumper wires
otherwise permanent damage to the motor and wiring
will occur.
Remote controls, if installed and connected, operate in
conjunction with the dry contacts/jumper wires. When
controlling units with remote controls, use extreme caution around moving mechanical components such as
fans, belts and motors as they can lead to severe personal
injury.
3. Check that all access panels or doors are closed.
IMPORTANT
On initial power up, the unit will perform a system check
and operate at high speed for five seconds.
4. Turn the unit disconnect switch to the ‘On’ position.
5. Check that dampers are operating properly.
6. Wait for fans to run and then shut off unit’s disconnect switch. Check that fans are rotating in the correct direction. To reverse fan rotation, interchange
two wires on load side of three-phase power supply.
7. Close all access doors and turn the unit’s disconnect
to the ‘On’ position.
8. Re-check the voltage at the disconnect switch against
the nameplate and against phase-to-phase readings on
three-phase with all fans operating. If the voltage is not
within 10% of rated or 2% of phase-to-phase have
the condition corrected before continuing start-up.
9. Check amperage draw to each motor on each phase
against motor nameplate FLA. Do not allow the motor’s amp draw to exceed the Motor Manufacturer’s
nameplate data. Excessive amp draw will cause premature failure of the motor and void the motor warranty. If significantly different, check ductwork static
and/or take corrective action.
10. Check the fan operation on Low, Com and High
(if equipped). Use a wall control or the dry contact
switching to run fan speeds as shown in Appendix F,
Wall Control Connection.
11. Check the operation of the control options and accessories provided with the unit. See Frost Control,
Sequence of Operation and Appendix F for functional
descriptions and further details.
12. Check the setpoints on thermostats and controls; adjust and record changes as required.
13. When unit has achieved steady state take measurements and complete the readings section of the
Start-up Form in Appendix K and send copy of the
Start-up Form to Venmar CES to validate warranty.
Maintain a copy of the report at the unit for future
reference.
15
Frost Control
The unit functions are controlled by an integrated microprocessor control board included in the unit (except for
Non-defrost with no wall control compatibility) as per
the frost control selected, the sequence of operation as
described below and according to the options selected as
described in Appendix F.
Exhaust Only Defrost
The exhaust only frost control cycle is electronically controlled in response to outside air temperature. On a call
for defrost, the outside air damper closes, the supply fan is
de-energized and the exhaust fan continues to draw warm
room air through the flat plate heat exchanger to remove
the buildup of ice. Frost control is initiated at an outdoor
temperature of 23°F [−5°C].The defrost/ventilation cycle is
time and temperature based per Table 2.
Recirculation Defrost
The recirculation frost control cycle is electronically controlled in response to the outside air temperature. On a
call for defrost, the outside air damper closes, the exhaust
fan is de-energized, the exhaust gravity backdraft and/or
motorized damper closes, the recirculation defrost damper
opens and the supply fan circulates warm air through the
flat plate heat exchanger to remove the buildup of ice. It
is possible to extend the frost control times during very
cold weather by removing the jumper JU1-F on the circuit
board. Frost control is initiated at an outdoor air temperature of 23°F [−5°C]. The defrost/ventilation cycle is time
and temperature based per Table 2.
Table 2: Recirculation (R) and Exhaust Only (E) Defrost
HRV
Type of
Initiative
Stage
Model
Defrost Temperature
Ventilation Time
(Minutes) Defrost
Time/Run Time
Standard Extended
Aluminum and Polypropylene Core Heat Exchangers
2000i
2000e
1
R/E
23°F
−5°C
6/60
10/28
2
R/E
5°F
−15°C
6/32
10/28
3
R/E
−21°F −30°C
6/19
10/15
Heat and Moisture (HM) Core Heat Exchangers
2000i
2000e
1
R/E
2
R/E
3
R/E
23°F
−5°C
10/50
10/30
5°F
−15°C
10/30
10/20
−21°F −30°C
10/20
10/15
Non-defrost
Non-defrost control can be used only in areas where the
winter outdoor air condition stays above 23°F [−5°C] and
the return air humidity level is below 20%.
Non-defrost (No Wall Control Compatibility)
Non-defrost control can be used only in areas where the
winter outdoor air condition stays above 23°F [−5°C] and
the return air humidity level is below 20%. With no wall
control compatibility, the microprocessor control board is
not provided.
Sequence of Operation
IMPORTANT
•
On initial power up, the unit will perform a system check
and operate at high speed for five seconds.
Unit Checkpoints
•
•
Power connected, no ventilation call – Both fans
are off, frost control damper (if equipped) closes off
fresh air from outside. External hood dampers (if
equipped, are closed).
Power connected, low speed call (if equipped) –
Both fans on low speed, frost control damper closes
(if equipped) recirculation opening. External hood
dampers (if equipped) are open. If unit is singlespeed, it will come on that speed on a call for low or
high.
•
Power connected, occupied timer/sensor connection
open (unoccupied mode) – Both fans are off, frost
control damper (if equipped) opens recirculation
opening. External hood dampers (if equipped) are
closed.
Power connected, recirculation defrost option is factory installed – Recirc contacts are closed, exhaust
fan is de-energized, supply fan runs and recirculation
damper closes.
16
Airflow Balancing
For proper performance the unit must operate at the
specified supply and exhaust flow rates. Unit fan speed(s)
are theoretically set at the factory based on the ductwork
static pressures and flow rates specified with the order and
in the performance data.
If conditions change or verification is required, airflow
measurements should be taken using AMCA suggested
methods. This would normally be a velocity traverse measurement or flow measuring station (FMS) installed in the
ducts as shown in Appendix C.
It is important to locate the FMS in the ‘warm side’ ductwork to minimize the effect of differences in air density,
especially when balancing during extremely cold outside
conditions. Air density variations can affect the FMS by
more than 15%. The FMS should be located downstream
from straight sections of duct and not immediately after
fans or obstructions that will cause turbulent flow.
Setting Flow Rates
Units supplied with belt driven double width double inlet
fans have an adjustable motor sheave factory set at the
midpoint of travel at rpm for the flow rate and external
static specified. With optional VFD driven motors this factory setting is at 60 Hz.
For outdoor and exhaust, airflow rate should be balanced
with motors operating at high speed and at 60 Hz by
adjusting the motor sheave pitch diameter. The pulley set
screw torque setting is 110 in-lbs to 130 in-lbs. The VFD
can be used for fine tuning depending on sequence or as
required.
Maintenance
!
WARNING
Disconnect the main power switch to the unit before performing service and maintenance procedures.
See Appendix J for component locations, Appendix L for
troubleshooting information and Appendix M for a recommended list of routine maintenance items and time intervals. A more detailed description of major maintenance
items follows.
Air Filters
The standard medium efficiency filters are disposable and
should be replaced every three months. More frequent
replacement may be required under extremely dirty operating conditions. Replacement filters must be identical or
equivalent to original equipment in order to avoid problems with excessive pressure drop, rigidity and filtration efficiency. For filter size specifications see Appendix A.
Figure 5: Filter access
To remove the filters, remove access door. The filters can
be removed simply by sliding them forward out along the
filter tracks. There are two filters per airstream.
17
Drain Pans and Interior of Unit
!
WARNING
With the filters removed from the unit, the foil faced insulation or optional galvanized steel liner surfaces and drain
pans should be wiped clean with a soft cloth and mild
cleaning solution. Also ensure that the drain fittings are
free from dirt and are draining freely.
Fans and Motors
Belt driven fans are provided with spider bracket bearings
which come pre-lubricated from the Manufacturer and require no re-lubrication.
Fan wheels and fan housings should be checked for dirt
buildup. If they are dirty, it will be necessary to remove
the fan assembly to clean the dust out through the fan
discharge.
The fan rpm can be adjusted to achieve the design airflow
by adjusting the variable pitch motor sheave. The pulley
set screw torque setting is 110 in-lbs to 130 in-lbs.
Check for motor and pulley alignment using a straight
edge along the outside edges of the sheave or a string
placed at the center of the grove of both sheaves pulled
tight (see Figure 6). Adjust sheave position for proper
alignment.
Belt Tension Adjustment
Excessive belt tension is the number one cause of fan
bearing failure. Proper belt tension and pulley alignment
are essential for trouble free operation. A simple rule of
thumb for checking belt tension is illustrated in Figure 7.
When the belt is grasped as shown, a total deflection of
approximately 1” [25 mm] should be attained. Insufficient
deflection indicates that the belt is too tight, which may
result in noise from excessive vibration, premature bearing
failure and short belt life. Tight belts may overload a motor
that would otherwise be adequate.
Figure 7: Belt tension adjustment
Figure 6: Pulley alignment
To adjust the belt tension, loosen the two pivot bolts (#1,
Figure 8). Loosen the two adjustment bolts (#2, Figure 8).
Rotate the motor and base plate to achieve the maximum
belt deflection as described above. Tighten the drive belt
side adjustment bolt. Adjust the motor plate so that the
sheave and pulley faces are parallel and the belt is aligned.
Tighten the remaining adjustment bolt and the two pivot
bolts.
18
WARNING
!
Figure 8: Motor
the back of the fan assembly and isolator mounting rails
plus a neoprene bulb gasket fitted to the fan discharge
(#4, Figure 9) will allow the fan assembly and isolator
mounting rails to slide along the bottom support beam,
out from under the back hold down clip and out of the
unit. When reinstalling make certain the fan assembly and
isolator mounting rails are under the back hold down clips
to prevent fan assembly from working loose and the bulb
gasket on the fan discharge is continuous and in good
condition to prevent air leakage.
Figure 9: Supply fan
Fan and Motor Removal
After disconnecting the four-wire service connector
between the motor and the control box (#1, Figure 9),
loosen the two bolts (#2, Figure 9) and remove the bolts
and front clips holding down the fan assembly and isolator
mounting rails (#3, Figure 9). Hold down clips located on
Flat Plate Heat Exchanger
CAUTION
Hot water and strong cleaning agents could damage the
heat exchanger. Ensure the heat exchanger is returned to
the unit in the correct orientation. Failure to do so may
result in damage to the exchanger. Follow instructions on
the label.
The flat plate heat exchanger must be handled with care.
Remove the flat plate heat exchangers by sliding them out
from the tracks holding them in place. In order to ensure
maximum efficiency of the partitions, it is recommended
that the heat exchanger be cleaned once a year following the season of most intense use. For aluminum and
polypropylene media, allow the heat exchanger to soak
for three hours in warm water and mild soap. Rinse under
a heavy stream of water. For HM heat exchangers, use a
vacuum cleaner or low pressure air. It is not recommended
to use solvents or detergents as these may damage the
media or structure of the heat exchanger. When replacing
the flat plate heat exchanger sections, ensure they are of
the proper vertical orientation. Failure to do so may result
in low airflow on the exhaust airstream due to system
pressure trapping or holding condensate in the flutes.
19
Testing and Replacement of the Damper Actuator
!
WARNING
correctly, the problem is either in the wiring connections
or main circuit board. If the actuator does not work,
it must be replaced. Loosen the nuts on the jack shaft
clamp, remove the actuator. Tighten the clamp on the
damper jack shaft. Test for proper operation.
After disconnecting the power from the unit, determine
if the actuator is defective. Disconnect the 24V power
source. Connect the actuator directly to a 24V power
source with an appropriate cable. If the damper operates
System Operation Check
Verification of all control modes should be checked to ensure proper operation. Refer to Start-up section.
20
Appendix A: Equipment Data
Table A1: Equipment Data
Airflow Range
HRV2000i
HRV2000e
1,200 to 2,800 cfm
1,200 to 2,800 cfm
Belt drive
Belt drive
Fans
Supply type
Wheel type
Forward curved DWDI
Forward curved DWDI
Wheel size
Ø12” x 7” [Ø305 x 178 mm]
Ø12” x 7” [Ø305 x 178 mm]
Ball sealed resilient rings
Bearing
Housing
Shaft
Cold rolled
Cold rolled
1” [25 mm] keyed
1” [25 mm] keyed
Motor (HP)
½ to 3
½ to 3
Exhaust type
Belt drive
Belt drive
Wheel type
Forward curved DWDI
Forward curved DWDI
Wheel size
Ø12” x 7” [Ø305 x 178 mm]
Ø12” x 9” [Ø305 x 229 mm]
Bearing
Housing
Shaft
Motor (HP)
Cold rolled
Cold rolled
1” [25 mm] keyed
1” [25 mm] keyed
½ to 3
½ to 3
15” x 15” x 46” [381 x 381 x 1,168 mm]
15” x 15” x 46” [381 x 381 x 1,168 mm]
Polypropylene, aluminum or HM
Polypropylene, aluminum or HM
MEF
12” x 24” x See Note 1
[305 x 610 mm x See Note 1]
2
MEF
12” x 24” x See Note 1
[305 x 610 mm x See Note 1]
2
Flat Plate Heat Recovery Module
Size
Flat plate material
Filters
Type (primary)
Size
Number per airstream
Type (secondary)
Size
HEF
HEF
12” x 24” x 4” [305 x 610 x 102 mm]
12” x 24”x 4” [305 x 610 x 102 mm]
2
2
Number per airstream
Weight (With Recirculation Defrost)
Net core weight maximum
Polypropylene
700 lbs [318 kg]
730 lbs [332 kg]
Aluminum
730 lbs [332 kg]
760 lbs [345 kg]
HM
730 lbs [332 kg]
760 lbs [345 kg]
Add 50 lbs [114 kg]
Add 30 lbs [14 kg]
Polypropylene
700 lbs [318 kg]
730 lbs [332 kg]
Aluminum
730 lbs [332 kg]
760 lbs [345 kg]
Shipping weight
Weight (With Exhaust Only Defrost)
Net core weight maximum
HM
Shipping weight
Shipping Dimensions (L x W x H)
730 lbs [332 kg]
760 lbs [345 kg]
Add 50 lbs [23 kg]
92” x 50” x 38”
[2,337 x 1,270 x 965 mm]
Add 30 lbs [14 kg]
50” x 88” x 60”
[1,270 x 2,235 x 1,524 mm]
Note:
1 – 4” [102 mm] deep without HEF; 1” [25.4 mm] deep with HEF
21
SA
EA
C
Supply fan and
control box
access panel
36.500”
[927]
48.500”
[1,232]
50.500”
[1,283]
Low voltage terminal strips
(reverse door option)
7.625”
[194]
10.000”
[254]
12.750” [324]
14.000” [356]
6.000” [152]
Power line input
(reverse door option)
LEFT VIEW
EA-E
14.000”
[356] SA-E
4.500” Power
[114] line
input
5.250”
[133]
7.625”
[194]
10.000”
[254]
Low voltage terminal strips
4.500”
[114]
6.000”
[152]
FRONT VIEW
30.000”
[762]
D
RA 23.250”
[591]
OA
Filter access panel
B
Filter access panel
91.000”
[2,311]
TOP VIEW
85.000”
[2,159]
88.500”
[2,248]
91.000”
[2,311]
Front
Back
26.000”
Hanging mount hole 12.250”
[660]
[311]
Ø 0.625” [16]
A Condensate drain
Hanging mount hole Ø 0.625” [16]
Note: If the unit is to be hung,
materials required to hang the unit
will be supplied by others.
Left
Exhaust fan
access panel
A
Right
26.000”
[660]
4.000”
[102]
12.000”
[305]
RIGHT VIEW
1.250”
[32]
17.250”
[438]
12.000”
[305]
2.000”
[51]
14.000”
20.375” [356]
[518]
RIGHT VIEW
26.000”
[660]
RA-E
OA-E
48.500”
[1,232]
26.000”
[660]
Connection Table
Connection Sizes
A Condensate drain fitting (4x) 3/4” MPT
Plate heat exchanger
48.500”
[1,232]
46.000”
[1,168]
Notes:
Dimensions in [ ] are millimeters.
Center of gravity
Direction of airflow
A minimum of 26.000” [660] clearance from any obstruction is required for
removal of plate heat exchangers, fans and control box access.
A minimum of 12.000” [305] clearance from any obstruction is required for
power hook-up, low voltage remote connection and control panel access.
Poly Core
Aluminum Core
HM Core
PTS
LBS
Kg
PTS
LBS
Kg
PTS LBS
Kg
A
189
86
A
197
90
A
197
90
B
147
67
B
153
70
B
153
70
C
203
92
C
212
92
C
212
96
D
161
73
D
168
76
D
168
76
TOTAL 700 318 TOTAL 730 332 TOTAL 730
332
Appendix B: Dimensional Drawings
Figure B1: HRV2000i unit dimensional drawing
22
17.500”
[444]
16.900”
[429]
16.000”
[406]
Optional SA
Left
EA
4.520”
[115]
8.325”
[211]
6.500”
[165]
A
20.692”
[526]
C
25.000”
[635]
Exhaust
air hood
19.514”
[496]
A
Front
128.115”
[3,254]
85.000”
[2,159]
TOP VIEW
RA
12.000”
[305]
12.250”
[311]
26.000”
[660]
SECTION VIEW AA
Vertical opening
supply air
A Condensate drain
9.500”
[241] 14.925”
[379]
14.925”
[379]
A Condensate drain
FRONT VIEW
48.501”
[1,232]
14.000”
[356]
SA
62.625”
[1,591]
89.000”
[2,261]
A
22.422”
[570]
22.020”
[559]
D
Outdoor
hood
B
17.750”
[451]
16.500”
[419]
6.500”
[165]
6.500”
[165]
Right
7.435”
[189]
2.000”
[51]
Optional
return air
horizontal
opening
Optional RA
OA
26.000”
[660]
Plate heat
exchanger
2.325”
[59]
36.000”
[914]
Vertical opening
return air
Supply fan and Heat recovery core
control box
and filter access panel
access panel
39.625”
[1,006]
Back
Exhaust blower
access panel
RIGHT VIEW
RIGHT VIEW
26.000”
[660]
49.875”
[1,267]
9.000”
[229]
48.793”
[1,239]
36.000”
[914]
7.698”
[196]
Kg
97
76
97
76
346
LEFT VIEW
Optional supply air
opening horizontal
EA-E
3.275” 17.500”
[444]
[83]
16.000”
36.180”[406]
[919]
3.728”
[95]
18.250”
[464]
16.000”
[406]
1.875”
[48]
Connection Table
Connection Sizes
A Condensate drain fitting (4x) 3/4” MPT
Poly Core
Aluminum Core
HM Core
PTS
LBS
Kg
PTS
LBS
Kg
PTS LBS
A
204
93
A
213
97
A
213
B
161
73
B
167
76
B
167
C
204
93
C
213
97
C
213
D
161
73
D
167
76
D
167
TOTAL 730 332 TOTAL 760 346 TOTAL 760
9.500”
[241]
11.775”
[299]
14.000”
[356]
4.500”
[114] Power line
input
6.000”
[152]
Notes:
Dimensions in [ ] are millimeters.
Center of gravity
Direction of airflow
A minimum of 26” [660] clearance from any obstruction is required for removal of
plate heat exchangers, fans, filters and control box access.
On vertical discharge units, ductwork is to be attached to accessory roofcurb only.
Horizontal discharge units, field supplied flanges to be attached to horizontal
discharge openings, and ductwork to be attached to the flanges.
Figure B2: HRV2000e unit dimensional drawing
23
Appendix C: Typical Installation
Figure C1: Typical indoor installation
Exhaust outside
Supply to space
2 D ft m
in.
Backdraft
damper
Flow
measuring
station
Exhaust from
space
inimum
cf in. m
5 D ft m
in.
Straight duct section required
to achieve good airflow rates.
(see Section 3.3)
Clearance required to
remove components for
All connections made
maintenance
with flexible collars
Minim
um dis
supplied by others
tance
10 ft. o
betwe
r accord
en exte
ing to
rior
local b
uilding hoods
codes
Intake from
outside
2 D ft m
in.
Flow
measuring
station
2 D ft m
in.
5 D ft m
in.
If electric pre-heat is used
locate it here (min. 24” from unit)
Figure C2: Typical outdoor installation
Supply air
Exhaust air
Roofcurb
Supply air
Exhaust air
24
Appendix D: HRV2000e Roofcurb
Figure D1: HRV2000e roofcurb
See Detail B
Exhaust air
to outside
Outdoor
air in
Supply air
Supply air
Return air
Return air
Detail B
Unit
3/8” [9.5] gasket
(supplied with curb)
Wood nailer
Overhang:
6.151” [156]
Unit
baserail
Return air
opening
Counter flashing
(field supplied)
Roofing felt
(field supplied)
37.875”
[962]
26.920”
[684]
77.000”
[1,956]
Cant strip
(field supplied)
2.000”
[51]
Rigid insulation
(optional)
2.000”
[51]
13.080”
[332]
Roofing material
(field supplied)
18.000”
[457]
Wood nailer
14.537”
[369]
12.018”
[305]
Supply air
opening
2.000” x 1.000”
[51 x 25] edge
3.000” [76] flange
TOP VIEW OF CURB
83.000”
[2,108]
81.000”
[2,057]
37.875”
[962]
41.875”
[1,064]
26.920” 43.875”
[1,114]
[684]
Return air
opening
Supply air
opening
12.018”
[305]
14.537”
[369]
2.000” typ. [51]
63.920”
[1,624]
77.000”
[1,956]
13.080”
[332]
Note: Dimensions in [ ] are millimeters.
25
Appendix E: Installing the Hoods and Rigging the Unit
Figure E1: Installing the hoods
Detail B
Female
Male
Black
Male
Black
Female
White
White
See Detail B
Detail A
See Detail A
Screw: #10 x ¾
Figure E2: HRV2000 rigging
Spreader bars
Detail A
Sling
Remove brackets in
order to remove
wooden pallet.
See Detail A
Note: Remove all packaging before beginning to rig the unit onto the installed roofcurb.
26
Appendix F: Terminal Control Diagrams
Wall Control Connection
Occupied Timer/Sensor Connection
Three types of remote wall controls are available:
Occupancy control is achieved by connection to the terminal interface shown below. These terminals require a dry
contact which could be provided by a number of types of
controls such as a timer, light sensor, occupancy sensor,
building management system or other. The unit will not
operate unless these contacts are closed!!
14. Standard wall control with fan switch and dehumidistat control.
15. Xtra wall control with fan mode selection, dehumidistat control and maintenance indicator.
16. Aqua Air wall control with fan mode selection, dehumidistat control and high speed recirculation mode.
The remote wall controls work with the integrated electronic controls within the unit to control ventilation sequences. Each wall control above has different features
and will require four-wire connection to the unit as shown
below. Without the wall control, fans can be operated
with dry contacts or a switch as in Figure F4.
IMPORTANT
All controls accessories (ex. night setback timer, CO2
controller, enthalpy controller, smoke detector) intended
to provide a contact closure for occupancy control across
terminals 3 and 4 (left side) cannot be used in conjunction with the Xtra or Aqua Air wall controls.
If a wall control is required in addition to any of these
options, only the standard wall control may be used.
Without these options, a factory installed jumper across
terminals 3 and 4 (left side) must be installed.
The drawing below shows a factory installed jumper and
programmable timer option.
IMPORTANT
All controls accessories (ex. night setback timer, CO2
controller, enthalpy controller, smoke detector) intended
to provide a contact closure for occupancy control across
terminals 3 and 4 (left side) cannot be used in conjunction with the Xtra or Aqua Air wall controls.
If a wall control is required in addition to any of these
options, only the standard wall control may be used.
Without these options, a factory installed jumper across
terminals 3 and 4 (left side) must be installed.
Figure F2: Occupied timer/sensor connection
JUMPER
(factory installed)
NSB Timer
CONTROL CONTACTS
1
Figure F1: Wall control connection
CONTROL CONTACTS
2
JUMPER
BLACK
GREEN
1
WALL CONTROL
2
YELLOW
RED
2
Wall
Control
4
5
JUMPER
4
OCCUPIED
TIMER/
SENSOR
LOW
3
4
HIGH
5
DIRTY
FILTER
INDICATOR
(1.5A–24 VAC)
6
OCCUPIED
TIMER/
SENSOR
LOW
3
3
COMMON
4
4
HIGH
5
5
DIRTY
FILTER
INDICATOR
6
6
(+) 24 VAC
(1.5A–24 VAC)
7
7
ENTHALPY
8
8
9
9
10
10
(−) 24 VAC
(+) 24 VAC
7
ENTHALPY
9
(ERV UNITS)
(ERV UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
A
(−) 24 VAC
(40 VA)
6
(+) 24 VAC
7
(ERV UNITS)
ENTHALPY
8
9
10
(ERV UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
A
(RECIRC UNITS)
UNOCC.
RECIRC
CONTACTS
FIELD WIRED
TERMINALS
B
GREEN
1
YELLOW
2
LOW
3
COMMON
4
HIGH
5
DIRTY
FILTER
INDICATOR
6
(1.5A–24 VAC)
7
WALL CONTROL
M
2
3
4
5
OCCUPIED
TIMER/
SENSOR
(−) 24 VAC
(40 VA)
(RECIRC UNITS)
UNOCC.
RECIRC
CONTACTS
FIELD WIRED
TERMINALS
B
CLASS 2 VOLTAGE
5
RED
2
(40 VA)
10
COMMON
2
YELLOW
RED
6
8
3
BLACK
1
1
1
1
GREEN
BLACK
WALL CONTROL
3
CONTROL CONTACTS
OCCUPANCY CONTROL
(field installed)
(ERV UNITS)
(ERV UNITS)
(RECIRC UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
UNOCC.
RECIRC
CONTACTS
A
FIELD WIRED
TERMINALS
B
8
9
10
CLASS 2 VOLTAGE
NOTE:
Connections are all dry contacts
except wall control, wheel alarm
contacts and 24 VAC power contacts.
NOTE:
Use of 24 VAC circuit requires
isolating contacts (ex. thermostat)
to prevent interconnection of
Class 2 outputs.
Class 2 outputs.
7
8
9
10
CLASS 2 VOLTAGE
NOTE:
Class 2 outputs.
27
24 VAC Power Connection
Remote Fan Control
A 24V, 20 VA, power source is available using the connections shown.
Remote fan control can be achieved by connecting dry
contact controls to the terminal interface at terminals
labeled: Low–Com–High (not all units have two speeds).
Placing a jumper across the Low and Com terminals will
put the unit in low speed ventilation or placing a jumper
across the High and Com terminals will put the unit into
high speed. Do not jumper all three terminals together.
These controls could also be the following: SPDT switch,
dehumidistat, CO2 sensor, light sensor, heat sensor, timer,
building management system, etc. Figure F4 represents a
switch connected to the unit.
Figure F3: 24 VAC power connection
24 VAC POWER CONNECTION
CONTROL CONTACTS
GREEN
1
YELLOW
2
BLACK
WALL CONTROL
2
3
4
20 VA Control
Power
Available
5
RED
OCCUPIED
TIMER/
SENSOR
LOW
3
COMMON
4
HIGH
5
DIRTY
FILTER
INDICATOR
(1.5A–24 VAC)
6
(−) 24 VAC
(40 VA)
6
(+) 24 VAC
7
(ERV UNITS)
ENTHALPY
8
9
10
(ERV UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
A
CAUTION
Do not use a wall control and remote fan switch at the
same time. Damage to the unit may occur.
Figure F4: Remote fan control
CONTROL CONTACTS
7
1
(RECIRC UNITS)
UNOCC.
RECIRC
CONTACTS
FIELD WIRED
TERMINALS
B
CLASS 2 VOLTAGE
NOTE:
Class 2 outputs.
8
9
GREEN
1
YELLOW
2
LOW
3
COMMON
4
HIGH
5
DIRTY
FILTER
INDICATOR
(1.5A–24 VAC)
6
BLACK
WALL CONTROL
2
JUMPER
1
3
4
RED
OCCUPIED
TIMER/
SENSOR
REMOTE FAN SWITCH
LOW
HIGH
10
5
(−) 24 VAC
(40 VA)
6
(+) 24 VAC
7
(ERV UNITS)
ENTHALPY
8
9
10
(ERV UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
A
(RECIRC UNITS)
UNOCC.
RECIRC
CONTACTS
FIELD WIRED
TERMINALS
B
7
NOTE: Not all units have two speeds.
Single-speed units will be activated
with either Low–Com or High–Com
connection.
8
9
10
CLASS 2 VOLTAGE
NOTE:
Class 2 outputs.
28
Dirty Filter Sensor
Unoccupied Recirc Contacts
The HRVs can be equipped with dirty filter sensors which
monitor the pressure across the filters and close the contacts when the filters become restricted with dirt. Connections on the terminal interface labeled ‘Dirty Filter
Indicator’ provide the dry contact and may be connected
as shown in Figure F5.
On recirc defrost units, an unoccupied recirc control can
be achieved by connection to the terminal interface shown
below. These terminals require a 24 VAC signal which
could be provided by a timer, thermostat or other. Closure
of these terminals will cause the unit to go into a recirc
mode where the supply fan runs on high speed and the
exhaust fan stops.
Figure F5: Dirty filter sensor
IMPORTANT
CONTROL CONTACTS
1
BLACK
2
RED
GREEN
1
YELLOW
2
Although these contacts are intended for use during
unoccupied periods, they are still active during an occupied condition. Therefore, the 24 VAC signal should be
applied such that it is disabled during occupied periods,
preventing the unit from going into a recirc condition
unnecessarily.
JUMPER
WALL CONTROL
3
4
5
OCCUPIED
TIMER/
SENSOR
LOW
3
COMMON
4
HIGH
5
DIRTY
FILTER
INDICATOR
(1.5A–24 VAC)
6
(−) 24 VAC
(40 VA)
6
(+) 24 VAC
7
(ERV UNITS)
ENTHALPY
8
9
10
(ERV UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
A
(RECIRC UNITS)
UNOCC.
RECIRC
CONTACTS
FIELD WIRED
TERMINALS
B
CLASS 2 VOLTAGE
NOTE:
Class 2 outputs.
Figure F6: Unoccupied recirc contacts
7
CONTROL CONTACTS
8
1
9
10
GREEN
1
YELLOW
2
LOW
3
COMMON
4
HIGH
5
DIRTY
FILTER
INDICATOR
(1.5A–24 VAC)
6
BLACK
WALL CONTROL
24 VAC LIGHT
or INDICATOR
(supplied by others)
2
3
4
5
RED
OCCUPIED
TIMER/
SENSOR
(−) 24 VAC
(40 VA)
6
(+) 24 VAC
7
(ERV UNITS)
ENTHALPY
8
9
10
(ERV UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
A
(RECIRC UNITS)
UNOCC.
RECIRC
CONTACTS
FIELD WIRED
TERMINALS
B
7
8
9
24 VAC
required
10
CLASS 2 VOLTAGE
NOTE:
NOTE: Unoccupied recirculation
is available on units with
recirculation defrost option only.
Class 2 outputs.
29
CO2 Ventilation Control
Low Temperature Control
HRVs can be controlled by a CO2 controller that can be
connected to fan control Low–Com–High (not all units
have two speeds). As the CO2 levels exceed acceptable
limits, the dry contact across High–Com is closed, raising
high speed fan ventilation.
The fans of the HRV can be controlled using a setpoint low
temperature controller. If the supply air discharge temperature falls below the setpoint on the low temperature
controller, the contacts between R–W would break. This
will de-energize the fans and close the outside air damper.
Figure F7: CO2 ventilation control
IMPORTANT
CO2 SENSOR
CONTROL CONTACTS
1
GREEN
1
YELLOW
2
LOW
3
BLACK
WALL CONTROL
2
RED
8
7
FACTORY MOUNTED
JUMPER
6
3
4
OCCUPIED
TIMER/
SENSOR
COMMON
4
HIGH
5
5
NC
NO
4
An Xtra or Aqua Air wall control cannot be used with a
low temperature control. The remote bulb sensor must
be placed downstream of the supply air fan discharge.
Figure F8: Low temperature control
3
5
(−) 24 VAC
CONTROL CONTACTS
2
NOTE:
1. R–W breaks on temperature fall
2. Sensing bulb is placed in supply
airstream after the energy exchanger
(40 VA)
6
(+) 24 VAC
7
(ERV UNITS)
8
9
10
ENTHALPY
DIRTY
FILTER
INDICATOR
6
(1.5A–24 VAC)
7
(ERV UNITS)
(RECIRC UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
UNOCC.
RECIRC
CONTACTS
A
FIELD WIRED
TERMINALS
B
8
1
2
1
AC GROUND
AC INPUT
Class 2 outputs.
GREEN
1
YELLOW
2
LOW
3
COMMON
4
HIGH
5
DIRTY
FILTER
INDICATOR
6
(1.5A–24 VAC)
7
BLACK
WALL CONTROL
2
R
3
B
4
W
5
RED
OCCUPIED
TIMER/
SENSOR
9
10
NOTE 1: Terminal 5 on CO2 sensor
used only with two-speed units.
NOTE 2: Terminal 7 and 8 on CO2
sensor used only with blower VFDs.
NORMAL OPERATION – LOW SPEED
CO2 LEVELS EXCEED SETPOINT – HIGH SPEED
(−) 24 VAC
(40 VA)
6
(+) 24 VAC
7
(ERV UNITS)
T675A SETPOINT CONTROL
CLASS 2 VOLTAGE
NOTE:
1
Field installed
low temperature unit control
8
9
10
ENTHALPY
(ERV UNITS)
(RECIRC UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
UNOCC.
RECIRC
CONTACTS
A
FIELD WIRED
TERMINALS
B
8
9
10
CLASS 2 VOLTAGE
NOTE:
Class 2 outputs.
30
Smoke Detector
Locate in a normally occupied area of premises. Recommended for compliance to NFPA-90A and IMC code 606.
HRVs can be equipped with a duct mount smoke detector
which will monitor the air when passing through the duct
system into the HRV. When sufficient smoke is detected,
an alarm condition is activated. By connecting the occupied timer/sensor contacts to the NC alarm auxiliary contacts on the duct sensor, an alarm condition will open the
auxiliary contact and stop operation of the HRV.
Figure F9: Smoke detector
9
10
AVAILABLE POWER INPUTS
A
B
C
24V
16
ALARM AUXILIARY CONTACTS
FOR FAN SHUTDOWN, ETC.
6
N.C.
120
VAC
220/240
VAC
17
C.
7
18
C.
N.O.
N.O.
8
N.C.
ALARM AUXILIARY CONTACTS SHOWN IN
STANDBY. CONTACTS TRANSFER DURING
ALARM AS INDICATED BY THE ARROWS.
2 ALARM
RED
GRN.
TROUBLE CONTACTS CLOSED IN ALARM AND
STANDBY. CONTACTS OPEN WHILE DETECTOR
HEAD OR POWER IS REMOVED, AND DURING
RESET. OPEN CONTACTS SIGNAL TROUBLE
CONDITION TO PANEL.
15
(+) ALARM SIGNAL
1 COMMON
20
FIELD
INSTALLED
JUMPER
19
3 POWER
3
N.O.
(D) AUX POWER
TROUBLE CONTACT RATING
0.3A @ 32 VAC/DC
TROUBLE CONTACTS CLOSED IN
STANDBY AND ALARM. CONTACTS
OPEN WHILE DETECTOR HEAD OR
POWER IS REMOVED, AND DURING
RESET. OPEN CONTACTS EXTINGUISH
OPTIONAL APA451 GREEN POWER
LED TO INDICATE TROUBLE CONDITION.
(+) AUX POWER
14
TROUBLE
CONTACTS
3
ALARM AUXILIARY CONTACT RATINGS
10A @ 30 VDC
10A @ 250 VAC (0.75 POWER FACTOR)
240VA @ 240 VAC (0.4 POWER FACTOR)
1/8 HP @ 120 VAC
1/4 HP @ 240 VAC
500mA MINIMUM @ 24 VDC
NOT INTENDED FOR CONNECTION
TO CONTROL PANELS.
ALARM INITIATION CONTACT RATING
2.0A @ 30 VAC/DC (0.6 POWER FACTOR)
ALARM INITIATION CONTACTS
14
POWER INPUTS ACCEPT
24 VDC, 24 VAC 50–60 HZ,
120 VAC 50–60 HZ, OR
220/240 VAC 50–60 HZ.
CONNECT POWER SOURCE
TO APPROPRIATE TERMINALS
OF EACH DETECTOR.
CONTROL CONTACTS
1
GREEN
1
YELLOW
2
LOW
3
COMMON
4
HIGH
5
DIRTY
FILTER
INDICATOR
(1.5A–24 VAC)
6
BLACK
WALL CONTROL
2
3
4
5
RED
OCCUPIED
TIMER/
SENSOR
(−) 24 VAC
(40 VA)
6
(+) 24 VAC
7
(ERV UNITS)
ENTHALPY
8
9
10
(ERV UNITS)
WHEEL
ALARM
OPTION
(24 VAC)
A
(RECIRC UNITS)
UNOCC.
RECIRC
CONTACTS
FIELD WIRED
TERMINALS
B
7
8
9
10
CLASS 2 VOLTAGE
NOTE:
Class 2 outputs.
31
Appendix G: Effect of Undersized Straight Duct and Elbows on
Forward Curved Fans
Figure G1: Fan inlet and outlet duct elbow positions
Figure G2: System effect factor – pressure drop
curves for SWSI fans
A
5.00
B
C
D
E
F G HI J K L
M
N O
P
4.00
Position C
Q
3.00
R
Position D
Position B
e
tiv
ec th
eff leng
% ct
du
Inlet
Position A
Notes:
1. Single width single inlet (SWSI) fans shown.
2. Fan inlet and elbow positions (rotation) must be oriented as shown for proper application of the systems
effect factor.
Table G1: System Effect Factor Curves for SWSI Fans
Model
HRV2000
Outlet
No
12%
25%
50% 100%
Elbow Outlet Outlet Outlet Outlet Outlet
Position Duct
Duct
Duct
Duct
Duct
A
Q
Q–R
R–S
U
B
P
Q
R
T
C
N–O
Q–P
P–Q
S
D
O
P
Q–R
S–T
Notes:
1. For double width double inlet (DWDI) fans use the
same system effect factor curve for SWSI fans.
System Effect Factor – Pressure, Inches w.g.
2.50
2.00
S
1.50
T
1.00
0.90
0.80
U
0.70
0.60
V
0.50
0.40
W
0.30
0.25
0.20
X
0.15
0.10
5
6
7
8 9 10
15
20
25
30
40
50
60
Air Velocity, FPM in Hundreds
Air Density = 0.075 lb per cu. ft.
Notes:
1. For double width double inlet fans use the same system effect factor – pressure drop curve as for SWSI
fans but if elbows are installed within the 100% effective duct length multiply the pressure drop value
by the following multiplier based on elbow position
from Table G1.
a. Elbow position B = pressure drop x 1.25
b. Elbow position D = pressure drop x 0.85
c. Elbow position A and C = pressure drop x 1.00
32
Appendix H: Drain Connections
Figure H1: HRV2000i/e drain connections
Plastic drain fitting
Min. 3”
[76 mm]
Min. 3”
[76 mm]
¾” NPT
coupler
To drain
Min. 1”
[25 mm]
Min. 4”
[102 mm]
Water trap
Min. 1”
[25 mm]
Min. 4”
[102 mm]
Copper or
plastic pipe
To drain
Plastic hose
Notes:
1. All hose, pipe and couplers to be supplied by others.
2. Slope drain lines minimum ¼” per foot.
33
Appendix I: Electrical Data
Table I1: ODP Motor Medium Efficiency – Full Load Amperage (FLA) HRV2000i/e
HP
Voltage
208/1/60
230/1/60
½
4.50
4.00
208/3/60
230/3/60
460/3/60
575/3/60
1.80
2.20
1.10
0.90
Blower Motor
¾
5.40
6.00
2.70
2.70
1.40
1.10
1.0
6.80
7.00
3.10
3.00
1.50
1.20
1.5
10.20
10.20
4.50
4.40
2.20
1.80
2.0
14.00
14.00
6.00
5.80
2.90
2.30
3.0
17.80
17.00
9.00
8.20
4.10
3.30
0.48
0.43
0.43
0.22
0.17
Controls
0.48
The blower motor FLA values shown above are for one motor only.
Maximum Overcurrent Protection (MCA)
Calculation
1.25 x FLA of larger hp motor or compressor
Sum of all other motors FLA
=
Standard controls FLA
=
Calculated total MCA
=______
+______
+______
=______
Maximum Overcurrent Protection (MOP)
Calculation
2.25 x FLA of larger hp motor or compressor
Sum of all other motors FLA
=
Standard controls FLA
=
Calculated total MOP
Actual MOP (from Table I2)
=______
+______
+______
=______
=______
CAUTION
All electrical installations and wiring require correct
wire gauge sizing and protection according to local
building codes.
Table I2: Standard Overcurrent Protection
3
40
250
4
45
300
5
50
350
6
60
400
7
70
450
8
80
500
9
90
600
10
100
650
12
110
700
15
125
750
20
150
800
25
175
850
30
200
900
35
225
1,000
Finding the Actual MOP Value
From the calculated MOP value, select the next smallest
value of protection from Table I2 to get the Actual MOP
value (maximum value of overcurrent device).
IMPORTANT
If this method leads to an actual MOP value being smaller
than the calculated total MCA, then a larger value must
rather be selected, such that the actual MOP is at least
equal to the calculated total MCA.
34
Appendix J: Components
Figure J1: HRV2000i components
1
2
5
4
6
7
13
11
10
8
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
Description
Housing
Fan
Fan pulley
Fan belt
Adjustable sheave
Fan motor
Plate heat exchangers
Supply filter set – 2 per set
Exhaust filter set – 2 per set
Defrost damper actuator
Defrost/outdoor air damper
Drain pans
Pressure differential switch (dirty filter)
Some unit components listed above are optional.
Consult the unit nomenclature for standard and
optional components.
3
9
12
Figure J2: HRV2000e components
19
15
1
2
3
4
5
6
17
7
8
10
11
13
14
18
16
20
12
9
Item
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
Description
Housing
Fan
Fan pulley
Fan belt
Adjustable sheave
Fan motor
Plate heat exchangers
Supply filter set – 2 per set
Exhaust filter set – 2 per set
Defrost damper actuator
Defrost/outdoor air damper
Drain pans
Outdoor air damper actuator
Outdoor air damper
Exhaust air damper actuator
Exhaust air damper
Pressure differential switch (dirty filter)
Outdoor air intake hood
Exhaust air hood
Aluminum mesh prefilter
Some unit components listed above are optional.
Consult the unit nomenclature for standard and
optional components.
35
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36
Appendix K: HRV2000i/e Start-up Form and Checklist
•
•
•
•
•
IMPORTANT
Complete this form for each unit and email, fax or mail to Venmar CES immediately after start-up to validate warranty
and to provide valuable information for personnel performing future maintenance or for factory assistance to address
below.
Read the Installation, Operation and Maintenance Instructions Manual before proceeding.
Leave a copy of this report with the Owner and at the unit for future reference and permanent record.
To ensure proper operation of each unit qualified personnel should perform the start-up, complete the checklist and
report.
All units are factory run tested. Blowers are set up to run correct when power is connected. If any blower is running
backwards disconnect power and switch two leads (on three-phase power) to ensure proper rotation.
Venmar CES
Unit Identification Information
1502 D Quebec Avenue
Saskatoon, Saskatchewan
Canada S7K 1V7
Phone: 1-866-4-VENMAR (1-866-483-6627)
Fax: (306) 651-6009
Project:___________________________________________
Model Number:____________________________________
Serial Number:_____________________________________
Tag:______________________________________________
Jobsite Contact:____________________________________
Job Name:________________________________________
Job Address:_______________________________________
Telephone:________________________________________
Email:_ ___________________________________________
Table K1: Pre Start-up Checklist
Checklist Item
1
Is the electrical disconnect set to the ‘Off’ position?
2
Have shipped loose parts, obstructive packaging, objects, tie downs on fans been removed?
3
Are fans and motors rotating freely?
4
Are fan wheels and drive set screws tight?
5
Are belt alignment and tension correct?
6
Are air filters installed, clean or replaced? If filters are equipped with optional differential pressure switch, check
desired setpoint does not exceed factory setting of 0.8” w.c. [200 Pa].
7
Are damper and linkages free of movement?
8
Is ductwork connected and complete?
9
Are condensate drain connections trapped, installed correctly and filled?
Yes
N/A
10 Are all shipped loose or field supplied components correctly installed and wired?
11 Has power supply and control wiring been inspected and approved by the Local Authorities?
12 Have factory and field wiring connections been checked and tightened?
13 Are all fuses properly installed in holders?
14
Is voltage at the disconnect switch within 10% of nameplate and phase-to-phase readings within 2% of
nameplate?
15 Are field piping and venting installation and connections for heating and cooling options completed and tested?
16 Have all thermostat setpoints been checked and adjusted?
37
Serial Number:______________________________________
Table K2: Start-up Checklist
Checklist Item
1
2
Yes
N/A
Before proceeding, complete the pre start-up checklist.
For the unit to start when the disconnect switch is turned on, a ventilation and fan speed call is required.
a.Is a ventilation call available from the remove wall control connection, occupied timer/sensor connection or
BMS, whichever is used? See Appendix F for which terminal connections should be closed (contacts made)
once power is connected. Circle which device is used.
b.Is either a low speed or high speed (if equipped) call available from the remote fan control, CO2 ventilation
control or BMS, whichever is used? See Appendix F for which terminal connections should be closed
(contacts made) once power is connected.
c.If ‘a’ and ‘b’ are not connected, start can be accomplished by using temporary external dry contacts or a
jumper wire closing timer contacts 3 and 4 (left side) plus low speed contacts 3 and 4 (right side) or high
speed contacts 4 and 5 (right side). Are temporary dry contacts or a jumper wire used for start?
!
WARNING
Only low or high speed contacts must be closed at any one time using dry contacts/jumper wires, not both otherwise permanent
damage to the motor and wiring will occur.
Remote controls, if installed and connected, operate in conjunction with the dry contacts/jumper wires. When controlling units
with remote controls, use extreme caution around moving mechanical components such as fans and motors as they can lead to
severe personal injury.
3
Close all access panels or doors.
Turn the unit disconnect switch to the ‘On’ position.
IMPORTANT
4
On initial power up, the unit will perform a system check and operate at high speed for five seconds.
5
6
7
8
9
10
11
12
13
Are dampers operating properly?
Wait for fans to run and then shut off unit’s disconnect switch. Are the fans and motors rotating in the
correct direction? To reverse fan rotation, interchange two wires on load side of three-phase power supply.
Close all access doors and turn the unit’s disconnect to the ‘On’ position.
Re-check the voltage at the disconnect switch against the nameplate and against phase-to-phase readings
on three-phase with all blowers operating. If the voltage is not within 10% of rated or 2% of phase-tophase have the condition corrected before continuing start-up.
Check amperage draw to each motor on each phase against motor nameplate FLA. Do not allow the
motor’s amp draw to exceed the Motor Manufacturer’s nameplate data. Excessive amp draw will cause
premature failure of the motor and void the motor warranty. If significantly different check ductwork static,
adjust fan motor sheave to reduce fan rpm and/or take corrective action.
Check the fan operation on Low, Com and High (if equipped). Use a wall control or the dry contact
switching to run fan speeds as shown in Appendix F.
Check the operation of the control options and accessories provided with the unit. See Frost Control,
Sequence of Operation and Appendix F for functional descriptions and further details.
Check the setpoints on thermostats and controls; adjust and record changes as required.
When unit has achieved steady state take measurements and complete readings section of start-up form for
each operating cycle to verify all components are functioning properly.
38
Start-up Readings
•
•
Serial Number:______________________________________
Allow unit to reach steady state before taking readings.
Complete based on options included with the unit.
Table K3: Start-up Readings
Mode of Operation
Heating
Cooling
3
4
Nameplate voltage
Power supply
Voltage at
disconnect no
motors
L1–L2
L2–L3
L1–L3
Voltage at full load L1/L2/L3
Full load amps
Amp draw L1/L2/L3
Supply fan
Overload amp setting
RPM
Power supply
with all loads
connected
Hertz
Full load amps
Amp draw L1/L2/L3
Exhaust fan
Overload amp setting
RPM
Hertz
Airflow CFM
Supply
Exhaust
Outdoor entering
Airside
Temperature °F
db/wb
Supply leaving
Return entering
Exhaust leaving
Outdoor duct
Static pressure
inches w.c.
Supply duct
Return duct
Exhaust duct
Stage
Electric
heating
1
2
Amp draw – L1
Amp draw – L2
Amp draw – L3
This unit has been checked out and started according with
the above procedures and completed forms and is operating satisfactorily.
After 24 hours of satisfactory operation, shut down the
unit and check all foundation bolts, shaft bearings, drive
set screws and terminals. Tighten where required.
Additional Comments:
_________________________________________________
Start-up
By:_______________________________________________
Date:_____________________________________________
Email:_ ___________________________________________
Company Name:___________________________________
Telephone:________________________________________
Email to Tech Support ([email protected]) or
fax to 306-244-4221.
_________________________________________________
_________________________________________
39
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40
Appendix L: Troubleshooting
Table L1: HRV2000i/e Troubleshooting
Problem
Cause
Solution
Check external wiring.
Unit will not turn on.
Occupied timer contacts open.
Unit will not turn off.
External terminal strip wiring.
Air from supply diffusers too cold.
Imbalance of supply and exhaust air.
Unit makes an annoying noise.
Blower wheel out of alignment.
Imbalance of supply and exhaust air.
Heat exchanger freezing up.
Frost control damper not functioning.
Pre-heater not functioning.
Check the control board for power.
Check if high or low speed control contacts
are closed on the terminal strip.
Check filters and heat exchanger for
blockage. Check balance of airflows. Install
post-heat module.
Remove the motor/blower assembly (see
Maintenance). Adjust blower wheel.
Check filters and heat exchanger for
blockage. Check balance of airflows.
Check for operation of damper actuator.
Fan motor failure.
Check the heat module circuit breaker.
Check unit circuit breaker. Check four-wire
service connector on each motor.
Check capacitor connections. Check motor
operation with new capacitor.
Check fan motor.
Fan motor relay in control box.
Check relay wiring. Check relay operation.
Fan drive belt.
Check for failure.
Check for securely fastened pulley(s) on
motor or fan shaft(s).
Wait until unit is out of frost control mode.
Electrical supply interrupted.
Fan motor capacitor.
Motor and blower not functioning.
Check the wiring in the control box.
Fan drive pulleys.
Only supply fan will turn on.
Unit is in frost control mode (recirc units).
Only exhaust fan will turn on.
Unit is in frost control mode (exhaust units).
Motor wiring incorrect.
Frost control relay is not working.
Check Molex connection to motor.
Frost control relay in control box.
Check wiring on damper actuator.
Check three-wire service connector on
control box.
Check relay wiring. Check relay operation.
Electronic control board.
Test frost control on control board.
Thermistor.
Test the thermistor operation.
Damper opens when it should be closed.
Wires are reversed.
Low exhaust airflow in the winter season.
Heat exchanger flutes are positioned in the
exhaust airstream.
Reverse wires #2 and #3 on damper actuator.
Remove flat plate heat exchanger sections
and re-position the flute side of the heat
exchanger into the supply airstream.
Electrical supply interrupted.
Damper will not open.
41
Appendix M: Maintenance Summary Chart
Table M1: HRV2000i/e Maintenance Summary Chart
Item
General
Air filters
No. Description
Dampers
Electrical
Notes
Monthly Quarterly
1
Inspect the general condition of the unit.
x
2
x
4
Remove any dirt or debris.
Check interior liners and partition for dirt buildup and
clean.
Check for unusual noise or vibration.
5
Replace prefilter.
6
Replace final filters.
x
7
Inspect holding frames/sliding track.
x
8
Check sheave set screw tightness.
2
x
9
Check fan and motor mounting bolt tightness.
3
x
10
Check sheave and fan belt condition and alignment.
3
Forward curved
11
fans
12
Flat plate heat
exchanger
Note
Adjust belt tension.
SemiAnnually
annually
x
x
1
x
4
x
Lubricate motor base adjusting screws.
x
13
Check for dirt buildup and clean.
x
14
Check motor voltage and current.
x
15
Check for dirt buildup and clean.
x
17
Check damper actuator mounting and linkage fasteners
for tightness.
Inspect for dirt or leakage.
18
Verify all electrical connections; tighten if necessary.
x
19
Verify all fuse holders.
x
20
Verify all motor overload settings.
x
21
Verify system operation in all control modes.
x
1
Check filters weekly after initial start-up until construction dust has been cleared and to gauge required interval.
2
Check set screw at start-up, after 24 hours, monthly for initial three months, then quarterly.
3
Check mounting bolts at start-up, after 24 hours, then quarterly.
4
Check and adjust belt tension at start-up, daily for the first week until they acquire their permanent set, then monthly.
16
x
x
42
[email protected]
www.venmarces.com
Venmar CES has a policy of continuous improvement and reserves the
right to change design and specifications without notice.
©1999 Venmar CES
VCES-HRV-IOM-2C (PN 207404)
June 2014

HRV2000i/e Installation, Operation and Maintenance

Transcription

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