CMY-Y100VBK2, Y200VBK2, Y300VBK2 Outdoor

CMY-Y100VBK2, Y200VBK2, Y300VBK2 Outdoor

WT05134X02
(2) Accessory piping parts
MITSUBISHI ELECTRIC MULTI AIR CONDITIONERS OPTIONAL PARTS
Model
CMY-Y100VBK2, Y200VBK2, Y300VBK2
Outdoor Twinning Kit Installation Manual
CMY-Y100VBK2
CMY-Y200VBK2
CMY-Y300VBK2
• For your safety, thoroughly read the following instructions prior to installation.
WARNING
Incorrect handling can result in death or serious injury.
CAUTION
Incorrect handling can result in bodily injury and/or structure damage.
Properly install all parts according to the instructions
in the Installation Manual.
• Improper installation may result in refrigerant gas leakage and
equipment damage.
• If the wrong twinning pipe or wrong size connecting pipe is
used, air conditioning performance will suffer.
Do not make any modifications or alterations.
Consult your dealer for repair.
When installing or relocating the unit, check that no
substance other than the specified refrigerant
(R410A) enters the refrigerant circuit.
After installation, check for a refrigerant leak.
• If leaked refrigerant comes in contact with a heat source, such
as a fan heater, stove, or electric grill, toxic gases will be
generated.
PUHY-**Y(S)HM
Do not touch the refrigerant pipes and refrigerant
circuit components with bare hands during and
immediately after operation.
• During or immediately after operation, certain parts of the unit
such as pipes and compressor may be either very cold or hot,
depending on the state of the refrigerant in the unit at the time.
To reduce the risk of frostbites and burns, do not touch these
parts with bare hands.
PUHY-**T(S)HM
PUHY-**Y(S)HMU
1. Confirming the Package Contents
Twinning kit
Twinning
kit
The following twinning and accessory piping parts are included with the Twinning Kit (CMYY100VBK2, CMY-Y200VBK2, and CMY-Y300VBK2). Verify that all items are present before
starting installation.
After checking, prepare the twinning kit by connecting the twinning pipes B, C, and D to the
twinning pipe A.
*Always use the twinning pipes included in the kit when preparing the twinning kit.
If the pipes on site do not fit the parts in the kit, use the accessory piping parts listed below.
L-shape
pipe
Dd(After
L-shape
pipe
(Afterthe
the twinning)
twinning)
Insulation
Insulationcover
cover
Twinning
TwinningaA
PUHY-**T(S)HMU
PUHY-**Y(S)HMC
b (Before
twinning)
Pipe c (After the twinning)
Pipe Pipe
B (Before
the the
twinning)
Pipe C (After the twinning)
(1) Twinning pipes
(Unit: mm[in])
Label
Liquid
A
Gas
D
Liquid
C
Gas
B
Liquid
Second row
A (Red)
Liquid
First row
C (Red)
Gas
Second row
D (Red)
Gas
First row
B (Red)
Twinning A
CMY-Y100VBK2
CMY-Y200VBK2
CMY-Y300VBK2
ID15.88[5/8]×ID12.7[1/2]×
ID12.7[1/2]
ID28.58[1-1/8]×ID25.4[1]×
ID25.4[1]
ID19.05[3/4]×ID15.88[5/8]×
ID15.88[5/8]
ID31.75[1-1/4]×ID28.58
[1-1/8]×ID28.58[1-1/8]
ID15.88[5/8]×ID12.7[1/2]×
ID12.7[1/2]
ID19.05[3/4]×ID15.88[5/8]×
ID15.88[5/8]
ID28.58[1-1/8]×ID25.4[1]×
ID25.4[1]
ID31.75[1-1/4]×ID28.58
[1-1/8]×ID28.58[1-1/8]
Pipe B (Before the twinning)
OD15.88[5/8]-ID15.88[5/8]
L83[3-9/32]
OD28.58[1-1/8]-ID28.58[1-1/8]
L342[13-15/32]
OD19.05[3/4]-ID19.05[3/4]
L85[3-3/8]
OD31.75[1-1/4]-ID34.93[1-3/8]
L337[13-9/32]
OD15.88[5/8]-ID19.05[3/4]
L85[3-3/8]
OD19.05[3/4]-ID19.05[3/4]
L85[3-3/8]
OD28.58[1-1/8]-ID34.93[1-3/8]
L337[13-9/32]
OD31.75[1-1/4]-ID38.1[1-1/2]
L339[13-3/8]
OD15.88[5/8]-ID12.7[1/2] (2)
Gas
OD34.93[1-3/8]-ID41.28[1-5/8]
Liquid
OD12.7[1/2]-ID9.52[3/8]
OD12.7[1/2]-ID15.88[5/8] (2)
OD15.88[5/8]-ID9.52[3/8]
OD15.88[5/8]-ID12.7[1/2]
Gas
OD28.58[1-1/8]-ID22.2[7/8] (3)
OD38.1[1-1/2]-ID41.28[1-5/8]
OD28.58[1-1/8]-ID19.05[3/4] (2)
OD38.1[1-1/2]-ID34.93[1-3/8]
Outdoor
unit
Outdoor unit
1 1
Outdoor
unit2 2
Outdoor unit
Pipe C (After the twinning)
L-shape pipe D (After the twinning)
OD12.7[1/2]-ID12.7[1/2]
OD12.7[1/2]-ID12.7[1/2]
L128[5-1/16]
OD25.4[1]-ID22.2[7/8]
OD25.4[1]-ID22.2[7/8]
L190[7-1/2]
OD15.88[5/8]-ID15.88[5/8]
OD15.88[5/8]-ID15.88[5/8]
L123[4-27/32]
OD28.58[1-1/8]-ID28.58[1-1/8]
OD28.58[1-1/8]-ID28.58[1-1/8]
L192[7-9/16]
OD12.7[1/2]-ID12.7[1/2]
OD12.7[1/2]-ID12.7[1/2]
L128[5-1/16]
OD15.88[5/8]-ID19.05[3/4]
OD15.88[5/8]-ID15.88[5/8]
L125[4-15/16]
OD25.4[1]-ID28.58[1-1/8]
OD25.4[1]-ID28.58[1-1/8]
L192[7-9/16]
OD28.58[1-1/8]-ID34.93[1-3/8]
OD28.58[1-1/8]-ID28.58[1-1/8]
L187[7-3/8]
Insulation cover
C
PUHY-**Y(S)HC
Instruction
Small
Large
Small
A0
P500
P550
P600
P650
P700
P750
P800
P850
P900
EP400
EP450
EP500
EP550
EP600
EP650
HP400
HP500
P500
P550
P600
P650
P700
P750
P800
P850
P900
P144
P168
P192
P216
P240
P144
P168
P192
P216
P240
HP144
HP192
HP400
HP500
P450(-AH)
P500
P550
P600
P650
P700
P750
P800
P850
P900
Ee
c
Aa
To Indoor
unit unit
To
Indoor
Liquid twinning pipe
To Indoor
unit unit
To
Indoor
Gas twinning pipe
Gas twinning pipe
Liquid twinning pipe
Ff
d
Bb
2 Two outdoor units
1 Two outdoor units
Package unit name
Outdoor unit 1
Component unit name
Outdoor unit 2
OutIdoor Twinning Kit
Liquid
A
Indoor unit~Twinning pipe
Gas
B
* See the Installation Manual that came with the outdoor unit for installation instructions.
Section
Liquid
D
CAUTION
Model
OD22.2[7/8]-ID19.05[3/4] (2)
1 Field-supply the pipes to be connected to the kit.
2 Choose the correct size pipe using the table below. Connect
the field-supplied pipe to the twinning kit for the sizes in the
table that are marked with an asterisk (*).
3 If the pipe was cut with a pipe cutter, remove the burrs and
eliminate foreign materials before connecting.
• Any presence of foreign substance or air can cause abnormal
pressure rise or explosion.
• Plastic bags can pose suffocation and choking hazards: keep
them out of the reach of children. Tear the plastics bags before
disposing of them.
OD15.88[5/8]-ID12.7[1/2]
OD22.2[7/8]-ID28.58[1-1/8]
(1) Two outdoor units
Only a dealer or qualified technician should perform
installation.
Properly dispose of packing materials.
OD12.7[1/2]-ID9.52[3/8] (2)
Gas
2. Selecting the Correct Size Refrigerant Pipes and
Using the Twinning Kit
WARNING
• If refrigerant leaks and comes in contact with an open flame,
toxic gases will be generated.
Liquid
• Refrigerant pipes other than the ones provided in the kit.
• Heat-resistant insulation material (for field-supplied refrigerant pipes)
• Insulation cover tape
• Thoroughly read the following “Safety Precautions” to ensure proper installation.
• Observe the following important safety precautions at all times.
• Hazards that can occur from incorrect handling are classified by the symbols below:
In the event of a refrigerant leak, thoroughly ventilate
the room.
Supplied pipe
(3) List of field-supplied parts
Safety Precautions
• Improper installation may result in water leakage, electric shock,
or fire.
(Unit: mm[in])
Section
A0
B0
C0
D0
E0
F0
B0
P250
P300
P350
P350
P350
P400
P450
P450
P450
EP200
P250
EP300
EP300
EP300
P350
HP200
HP250
P250
P300
P350
P350
P350
P400
P450
P450
P450
P72
P96
P120
P120
P120
P72
P96
P120
P120
P120
HP72
HP96
HP200
HP250
P250
P250
P300
P350
P350
P350
P400
P400
P450
P450
C0
P250
P250
P250
P300
P350
P350
P350
P400
P450
EP200
EP200
EP200
P250
EP300
EP300
HP200
HP250
P250
P250
P250
P300
P350
P350
P350
P400
P450
P72
P72
P72
P96
P120
P72
P72
P72
P96
P120
HP72
HP96
HP200
HP250
P200
P250
P250
P250
P300
P350
P350
P400
P400
P450
Liquid
C or E
A2
B2
C2
D2
E2
F2
Unit model
A1
B1
C1
D1
E1
F1
Twinning pipe~Outdoor unit
(Unit: mm[in])
F0
D0
E0
CMY-Y100VBK2
ø15.88
[5/8]
CMY-Y200VBK2
ø19.05
[3/4]
ø28.58
[1-1/8]
ø34.93
[1-3/8]
ø41.28
[1-5/8](*)
ø12.7[1/2]
PUHY-**YHM
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y200VBK2
CMY-Y100VBK2
PUHY-**THM
ø34.93
[1-3/8]
ø19.05
[3/4]
ø41.28
[1-5/8](*)
PUHY-**YHMU
ø28.58
[1-1/8]
ø15.88
[5/8]
PUHY-**THMU
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y200VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
ø15.88
[5/8]
ø15.88
[5/8]
ø28.58
[1-1/8]
ø28.58
[1-1/8]
PUHY-**YHMC
ø28.58
[1-1/8]
ø15.88
[5/8]
PUHY-**YHC
ø34.93
[1-3/8]
ø19.05
[3/4]
A1
A2
A3
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
EP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
Outdoor
unit
Outdoor unit
1 1
ø41.28
[1-5/8](*)
B1
B2
B3
P300
ø12.7
[1/2]
ø22.2
[7/8]
EP300
ø12.7
[1/2]
ø22.2
[7/8]
HP250
ø9.52
[3/8](*)
ø22.2
[7/8]
P300
ø12.7
[1/2]
ø22.2
[7/8]
P96
ø9.52
[3/8](*)
ø22.2
[7/8]
P96
ø9.52
[3/8](*)
ø22.2
[7/8]
HP96
ø9.52
[3/8](*)
ø22.2
[7/8]
HP250
ø9.52
[3/8](*)
ø22.2
[7/8]
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
Gas
D or F
A3
B3
C3
D3
E3
F3
(Unit: mm[in])
C1
C2
C3
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8](*)
–
D1
D2
D3
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
–
E1
E2
E3
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
–
F1
F2
F3
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8](*)
P120
ø12.7
[1/2]
ø22.2
[7/8]
P120
ø12.7
[1/2]
ø22.2
[7/8]
–
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
–
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P300
ø12.7
[1/2]
ø22.2
[7/8]
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
Outdoor
unit
Outdoor unit
2 2
Outdoor
unit
Outdoor unit
3 3
(2) Three outdoor units
Large
1 Field-supply the pipes to be connected to the kit.
2 Choose the correct size pipe using the table below.
Connect the field-supplied pipe to the twinning kit
for the sizes in the table that are marked with an
asterisk (*).
3 If the pipe was cut with a pipe cutter, remove the
burrs and eliminate foreign materials before
connecting.
1
(This sheet)
Small
Small
Large
Large
cC
Gg
eE
f
twinning
Liquid 1Liquid
twinning
pipe
pipe 1 D
d
Hh
F
Ii
Jj
twinning
pipe 1
Gas 1Gas
twinning
pipe
Aa
To
Indoor
To Indoor
unit unit
Liquid twinning pipe 2
To Indoor unit
Gas twinning pipe 2
Liquid 2 twinning pipe
Bb
To Indoor unit
Gas 2 twinning pipe
1
3 Three outdoor units
Package unit name
Outdoor unit1
Component unit name
Outdoor unit2
Outdoor unit3
Outdoor Twinning Kit
Liquid
A
Indoor unit~Twinning pipe2
Gas
B
Liquid
C
Twinning pipe1~Twinning pipe2
Gas
D
PUHY-**Y(S)HM
PUHY-**T(S)HM
PUHY-**Y(S)HMU
PUHY-**T(S)HMU
PUHY-**Y(S)HC
A0
P950
P1000
P1050
P1100
P1150
P1200
P1250
EP700
EP750
EP800
EP850
EP900
P950
P1000
P1050
P1100
P1150
P1200
P1250
P264
P288
P312
P336
P360
P264
P288
P312
P336
P360
P850(-AH)
P900(-AH)
P950
P1000
P1050
P1100
P1150
P1200
P1250
B0
P400
P400
P400
P400
P450
P450
P450
EP300
EP300
EP300
EP300
EP300
P400
P400
P400
P400
P450
P450
P450
P120
P120
P120
P120
P120
P120
P120
P120
P120
P120
P350
P350
P400
P400
P400
P400
P400
P400
P450
C0
P300
P300
P350
P350
P350
P400
P450
EP200
P250
EP300
EP300
EP300
P300
P300
P350
P350
P350
P400
P450
P72
P96
P120
P120
P120
P72
P96
P120
P120
P120
P300
P300
P300
P300
P350
P350
P400
P400
P450
4 Three outdoor units
A0
B0
C0
D0
E0
F0
G0
H0
I0
D0
P250
P300
P300
P350
P350
P350
P350
EP200
EP200
EP200
P250
EP300
P250
P300
P300
P350
P350
P350
P350
P72
P72
P72
P96
P120
P72
P72
P72
P96
P120
P200
P250
P250
P300
P300
P350
P350
P400
P350
Unit model
A1
B1
C1
D1
E1
F1
Twinning pipe~Outdoor unit
E0
F0
G0
(Unit: mm[in])
H0
I0
A1
A2
A3
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
EP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
CMY-Y300VBK2 ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
PUHY-**YHM
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
CMY-Y300VBK2
ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
PUHY-**THM
PUHY-**YHMU
PUHY-**THMU
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
CMY-Y300VBK2
PUHY-**YHC
Liqrid
E or G or I
A2
B2
C2
D2
E2
F2
B1
B2
B3
P300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
EP300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
P300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
P96
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P96
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
2
3. Pipe Connection Example
Gas
F or H or J
A3
B3
C3
D3
E3
F3
Connect the pipes between outdoor units, referencing the figures below.
<For two outdoor units>
(Unit: mm[in])
C1
C2
C3
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
–
D1
D2
D3
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
E1
E2
E3
P450
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
F1
F2
F3
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P120
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P120
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P300
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
P450
–
–
–
ø28.58
[1-1/8]
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
P450
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
–
–
Field piping
Field-supplied
pipe
Twinning
Twinning kit
kit
Field piping pipe
Field-supplied
The length of the straight pipe must
Straight
pipe
mm [19-11/
be
500 mm
(19that
inch)isor500
longer.
16 in] or more
–
<For three outdoor units>
Field pipingpipe
Field-supplied
ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
Twinning
Twinning kit
kit
Field piping pipe
Field-supplied
Twinning kit
Twinning kit
Straight
pipe of
that
500 mm
The length
theisstraight
pipe must
[19-11/16 in] or more
be 500 mm (19 inch) or longer.
(3) Slope of twinning pipes
Make sure the slope of the twinning pipes are at an angle within ±15° to
the horizontal plane.
If the slope exceeds the specified angle, the unit may be damaged.
The length of the straight pipe must
be
500 mm
(19 that
inch)isor500
longer.
Straight
pipe
mm [19-11/
16 in] or more
Note: Refer to the figure below for the installation
Note: See
the of
following
drawing
position
the twinning
pipe.for the fitting position
of the twinning pipe.
Twinning
Reducerpipe
Use the pipes supplied in the twinning kit, and make sure the section of
the field-supplied pipe that connects to the twinning pipe has at least
500 mm [19-11/16 in] of straight section. (The section of the fieldsupplied pipe that connects to the twinning pipe must have at least 500
mm [19-11/16 in] of straight section.) If the straight section is less than
500 mm [19-11/16 in], it may result in equipment damage.
4. Insulation Cover Installation
Install the insulation cover on the twinning kit after brazing the pipes and twinning kit.
Insulate all refrigerant pipes. Insulate the liquid and gas pipes separately, and pipes located inside the unit as well as the outside.
Use heat-resistant insulation material (Heat resistant: at least 120 °C [248 °F], Thickness: liquid = 10 mm [13/32 in],
gas = 20 mm [13/16 in]). Position the edges of the insulation cover and heat-resistant insulation material so as not to leave a gap,
and then wrap the exterior perimeter of the pipe joints and middle with tape (field-supplied).
±15°
±15°
(4) The length of the straight pipe between indoor units and the twinning pipe
Field piping pipe
Field-supplied
The angle of tilt of the reducer should be within
Slope of the twinning pipes are at an angle within
±15° with the ground.
±15° to the horizontal plane
Insulation material (field supply)
Heat-resistant insulation material (field-supplied)
(5) Pipe connection
Field piping
Field-supplied
pipe
When connecting the twinning kit to the outdoor unit, note the following:
Make sure the pipes from the twinning pipe to the outdoor unit are sloped downwards (towards the twinning pipes).
· If the piping on the outdoor unit side (from the twinning pipe) exceeds 2 m [6 ft], ensure a trap (gas pipe only) within 2 m
[6 ft].
Make sure the height of the trap is 200 mm [7-7/8 in] or more.
If there is no trap, oil can accumulate inside the pipe, causing a shortage of oil and may damage the compressor.
<2 m [6 ft] or less>
100 mm
[4 in] or
more
To Indoor unit
Downward slope
Twinning pipe
m(6
[6ft)ft]
22 m
Upward slope
Twinning kit
Twinning
kit
Insulation
Insulationcover
cover
Insulation
cover
Insulation cover
200 mm
[7-7/8 in]
or more
)
Twinning pipe
*
Insulation
material
Heat-resistant
insulation
(field
supply)
material
(field-supplied)
To Indoor unit
Within
Less
than
Twinning pipe
2 m [6 ft]
Total pipe length = A+B<10 m [32 ft]
unit
3
Outdoor
unit
1 Outdoor
Outoor unit
1
Outoor unit
2 2 Outdoor
Outoor unitunit
3
· If the twinning pipe is installed above the base
of the outdoor unit, it should be no more than
200 mm [7-7/8 in].
Lapped
space
of tape
taping
Overlap
margin
of the
Tape
(field-supplied)
Tape
(field supply)
Twinning 1
Twinning 1
200 mm [7-7/8 in]
max
Twinning 2
As the insulation cover
contracts slightly, conduct
Insulation
covers
shrink. by
taping
in the
fieldcan
securely
Overlap the
tape as
shown
providing
lapped
parts
asin
the left figure so that there
shown
in the left, so that no gap
will be no gap in between the
will
exist on the insulation cover
insulation cover or fieldand
field insulation
supply insulation
installed
material.
material.
Heat-resistant
Insulation
material
insulation
(field
supply)material
(field-supplied)
Tape (field
(field-supplied)
Tape
supply)
Tape Tape
(field-supplied)
(field supply)
5. Miscellaneous Notes
Twinning 2
To Indoor
unit
To Indoor unit
Less than
200 mm
(7 inch)
Field-supplied
Field pipingpipe
<More than 2 m [6 ft] apart>
To Indoor unit
To Indoor unit
Field-supplied
Field pipingpipe
3
Secure the field-supplied pipes with a pipe cover and a cable tie in place to keep them from coming in contact with other pipes as
necessary.
4
WT05134X02
(2) Accessory piping parts
MITSUBISHI ELECTRIC MULTI AIR CONDITIONERS OPTIONAL PARTS
Model
CMY-Y100VBK2, Y200VBK2, Y300VBK2
Outdoor Twinning Kit Installation Manual
CMY-Y100VBK2
CMY-Y200VBK2
CMY-Y300VBK2
• For your safety, thoroughly read the following instructions prior to installation.
WARNING
Incorrect handling can result in death or serious injury.
CAUTION
Incorrect handling can result in bodily injury and/or structure damage.
Properly install all parts according to the instructions
in the Installation Manual.
• Improper installation may result in refrigerant gas leakage and
equipment damage.
• If the wrong twinning pipe or wrong size connecting pipe is
used, air conditioning performance will suffer.
Do not make any modifications or alterations.
Consult your dealer for repair.
When installing or relocating the unit, check that no
substance other than the specified refrigerant
(R410A) enters the refrigerant circuit.
After installation, check for a refrigerant leak.
• If leaked refrigerant comes in contact with a heat source, such
as a fan heater, stove, or electric grill, toxic gases will be
generated.
PUHY-**Y(S)HM
Do not touch the refrigerant pipes and refrigerant
circuit components with bare hands during and
immediately after operation.
• During or immediately after operation, certain parts of the unit
such as pipes and compressor may be either very cold or hot,
depending on the state of the refrigerant in the unit at the time.
To reduce the risk of frostbites and burns, do not touch these
parts with bare hands.
PUHY-**T(S)HM
PUHY-**Y(S)HMU
1. Confirming the Package Contents
Twinning kit
Twinning
kit
The following twinning and accessory piping parts are included with the Twinning Kit (CMYY100VBK2, CMY-Y200VBK2, and CMY-Y300VBK2). Verify that all items are present before
starting installation.
After checking, prepare the twinning kit by connecting the twinning pipes B, C, and D to the
twinning pipe A.
*Always use the twinning pipes included in the kit when preparing the twinning kit.
If the pipes on site do not fit the parts in the kit, use the accessory piping parts listed below.
L-shape
pipe
Dd(After
L-shape
pipe
(Afterthe
the twinning)
twinning)
Insulation
Insulationcover
cover
Twinning
TwinningaA
PUHY-**T(S)HMU
PUHY-**Y(S)HMC
b (Before
twinning)
Pipe c (After the twinning)
Pipe Pipe
B (Before
the the
twinning)
Pipe C (After the twinning)
(1) Twinning pipes
(Unit: mm[in])
Label
Liquid
A
Gas
D
Liquid
C
Gas
B
Liquid
Second row
A (Red)
Liquid
First row
C (Red)
Gas
Second row
D (Red)
Gas
First row
B (Red)
Twinning A
CMY-Y100VBK2
CMY-Y200VBK2
CMY-Y300VBK2
ID15.88[5/8]×ID12.7[1/2]×
ID12.7[1/2]
ID28.58[1-1/8]×ID25.4[1]×
ID25.4[1]
ID19.05[3/4]×ID15.88[5/8]×
ID15.88[5/8]
ID31.75[1-1/4]×ID28.58
[1-1/8]×ID28.58[1-1/8]
ID15.88[5/8]×ID12.7[1/2]×
ID12.7[1/2]
ID19.05[3/4]×ID15.88[5/8]×
ID15.88[5/8]
ID28.58[1-1/8]×ID25.4[1]×
ID25.4[1]
ID31.75[1-1/4]×ID28.58
[1-1/8]×ID28.58[1-1/8]
Pipe B (Before the twinning)
OD15.88[5/8]-ID15.88[5/8]
L83[3-9/32]
OD28.58[1-1/8]-ID28.58[1-1/8]
L342[13-15/32]
OD19.05[3/4]-ID19.05[3/4]
L85[3-3/8]
OD31.75[1-1/4]-ID34.93[1-3/8]
L337[13-9/32]
OD15.88[5/8]-ID19.05[3/4]
L85[3-3/8]
OD19.05[3/4]-ID19.05[3/4]
L85[3-3/8]
OD28.58[1-1/8]-ID34.93[1-3/8]
L337[13-9/32]
OD31.75[1-1/4]-ID38.1[1-1/2]
L339[13-3/8]
OD15.88[5/8]-ID12.7[1/2] (2)
Gas
OD34.93[1-3/8]-ID41.28[1-5/8]
Liquid
OD12.7[1/2]-ID9.52[3/8]
OD12.7[1/2]-ID15.88[5/8] (2)
OD15.88[5/8]-ID9.52[3/8]
OD15.88[5/8]-ID12.7[1/2]
Gas
OD28.58[1-1/8]-ID22.2[7/8] (3)
OD38.1[1-1/2]-ID41.28[1-5/8]
OD28.58[1-1/8]-ID19.05[3/4] (2)
OD38.1[1-1/2]-ID34.93[1-3/8]
Outdoor
unit
Outdoor unit
1 1
Outdoor
unit2 2
Outdoor unit
Pipe C (After the twinning)
L-shape pipe D (After the twinning)
OD12.7[1/2]-ID12.7[1/2]
OD12.7[1/2]-ID12.7[1/2]
L128[5-1/16]
OD25.4[1]-ID22.2[7/8]
OD25.4[1]-ID22.2[7/8]
L190[7-1/2]
OD15.88[5/8]-ID15.88[5/8]
OD15.88[5/8]-ID15.88[5/8]
L123[4-27/32]
OD28.58[1-1/8]-ID28.58[1-1/8]
OD28.58[1-1/8]-ID28.58[1-1/8]
L192[7-9/16]
OD12.7[1/2]-ID12.7[1/2]
OD12.7[1/2]-ID12.7[1/2]
L128[5-1/16]
OD15.88[5/8]-ID19.05[3/4]
OD15.88[5/8]-ID15.88[5/8]
L125[4-15/16]
OD25.4[1]-ID28.58[1-1/8]
OD25.4[1]-ID28.58[1-1/8]
L192[7-9/16]
OD28.58[1-1/8]-ID34.93[1-3/8]
OD28.58[1-1/8]-ID28.58[1-1/8]
L187[7-3/8]
Insulation cover
C
PUHY-**Y(S)HC
Instruction
Small
Large
Small
A0
P500
P550
P600
P650
P700
P750
P800
P850
P900
EP400
EP450
EP500
EP550
EP600
EP650
HP400
HP500
P500
P550
P600
P650
P700
P750
P800
P850
P900
P144
P168
P192
P216
P240
P144
P168
P192
P216
P240
HP144
HP192
HP400
HP500
P450(-AH)
P500
P550
P600
P650
P700
P750
P800
P850
P900
Ee
c
Aa
To Indoor
unit unit
To
Indoor
Liquid twinning pipe
To Indoor
unit unit
To
Indoor
Gas twinning pipe
Gas twinning pipe
Liquid twinning pipe
Ff
d
Bb
2 Two outdoor units
1 Two outdoor units
Package unit name
Outdoor unit 1
Component unit name
Outdoor unit 2
OutIdoor Twinning Kit
Liquid
A
Indoor unit~Twinning pipe
Gas
B
* See the Installation Manual that came with the outdoor unit for installation instructions.
Section
Liquid
D
CAUTION
Model
OD22.2[7/8]-ID19.05[3/4] (2)
1 Field-supply the pipes to be connected to the kit.
2 Choose the correct size pipe using the table below. Connect
the field-supplied pipe to the twinning kit for the sizes in the
table that are marked with an asterisk (*).
3 If the pipe was cut with a pipe cutter, remove the burrs and
eliminate foreign materials before connecting.
• Any presence of foreign substance or air can cause abnormal
pressure rise or explosion.
• Plastic bags can pose suffocation and choking hazards: keep
them out of the reach of children. Tear the plastics bags before
disposing of them.
OD15.88[5/8]-ID12.7[1/2]
OD22.2[7/8]-ID28.58[1-1/8]
(1) Two outdoor units
Only a dealer or qualified technician should perform
installation.
Properly dispose of packing materials.
OD12.7[1/2]-ID9.52[3/8] (2)
Gas
2. Selecting the Correct Size Refrigerant Pipes and
Using the Twinning Kit
WARNING
• If refrigerant leaks and comes in contact with an open flame,
toxic gases will be generated.
Liquid
• Refrigerant pipes other than the ones provided in the kit.
• Heat-resistant insulation material (for field-supplied refrigerant pipes)
• Insulation cover tape
• Thoroughly read the following “Safety Precautions” to ensure proper installation.
• Observe the following important safety precautions at all times.
• Hazards that can occur from incorrect handling are classified by the symbols below:
In the event of a refrigerant leak, thoroughly ventilate
the room.
Supplied pipe
(3) List of field-supplied parts
Safety Precautions
• Improper installation may result in water leakage, electric shock,
or fire.
(Unit: mm[in])
Section
A0
B0
C0
D0
E0
F0
B0
P250
P300
P350
P350
P350
P400
P450
P450
P450
EP200
P250
EP300
EP300
EP300
P350
HP200
HP250
P250
P300
P350
P350
P350
P400
P450
P450
P450
P72
P96
P120
P120
P120
P72
P96
P120
P120
P120
HP72
HP96
HP200
HP250
P250
P250
P300
P350
P350
P350
P400
P400
P450
P450
C0
P250
P250
P250
P300
P350
P350
P350
P400
P450
EP200
EP200
EP200
P250
EP300
EP300
HP200
HP250
P250
P250
P250
P300
P350
P350
P350
P400
P450
P72
P72
P72
P96
P120
P72
P72
P72
P96
P120
HP72
HP96
HP200
HP250
P200
P250
P250
P250
P300
P350
P350
P400
P400
P450
Liquid
C or E
A2
B2
C2
D2
E2
F2
Unit model
A1
B1
C1
D1
E1
F1
Twinning pipe~Outdoor unit
(Unit: mm[in])
F0
D0
E0
CMY-Y100VBK2
ø15.88
[5/8]
CMY-Y200VBK2
ø19.05
[3/4]
ø28.58
[1-1/8]
ø34.93
[1-3/8]
ø41.28
[1-5/8](*)
ø12.7[1/2]
PUHY-**YHM
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y200VBK2
CMY-Y100VBK2
PUHY-**THM
ø34.93
[1-3/8]
ø19.05
[3/4]
ø41.28
[1-5/8](*)
PUHY-**YHMU
ø28.58
[1-1/8]
ø15.88
[5/8]
PUHY-**THMU
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y200VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
ø15.88
[5/8]
ø15.88
[5/8]
ø28.58
[1-1/8]
ø28.58
[1-1/8]
PUHY-**YHMC
ø28.58
[1-1/8]
ø15.88
[5/8]
PUHY-**YHC
ø34.93
[1-3/8]
ø19.05
[3/4]
A1
A2
A3
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
EP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
Outdoor
unit
Outdoor unit
1 1
ø41.28
[1-5/8](*)
B1
B2
B3
P300
ø12.7
[1/2]
ø22.2
[7/8]
EP300
ø12.7
[1/2]
ø22.2
[7/8]
HP250
ø9.52
[3/8](*)
ø22.2
[7/8]
P300
ø12.7
[1/2]
ø22.2
[7/8]
P96
ø9.52
[3/8](*)
ø22.2
[7/8]
P96
ø9.52
[3/8](*)
ø22.2
[7/8]
HP96
ø9.52
[3/8](*)
ø22.2
[7/8]
HP250
ø9.52
[3/8](*)
ø22.2
[7/8]
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
Gas
D or F
A3
B3
C3
D3
E3
F3
(Unit: mm[in])
C1
C2
C3
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8](*)
–
D1
D2
D3
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
–
E1
E2
E3
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
–
F1
F2
F3
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8](*)
P120
ø12.7
[1/2]
ø22.2
[7/8]
P120
ø12.7
[1/2]
ø22.2
[7/8]
–
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
–
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P300
ø12.7
[1/2]
ø22.2
[7/8]
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
Outdoor
unit
Outdoor unit
2 2
Outdoor
unit
Outdoor unit
3 3
(2) Three outdoor units
Large
1 Field-supply the pipes to be connected to the kit.
2 Choose the correct size pipe using the table below.
Connect the field-supplied pipe to the twinning kit
for the sizes in the table that are marked with an
asterisk (*).
3 If the pipe was cut with a pipe cutter, remove the
burrs and eliminate foreign materials before
connecting.
1
(This sheet)
Small
Small
Large
Large
cC
Gg
eE
f
twinning
Liquid 1Liquid
twinning
pipe
pipe 1 D
d
Hh
F
Ii
Jj
twinning
pipe 1
Gas 1Gas
twinning
pipe
Aa
To
Indoor
To Indoor
unit unit
Liquid twinning pipe 2
To Indoor unit
Gas twinning pipe 2
Liquid 2 twinning pipe
Bb
To Indoor unit
Gas 2 twinning pipe
1
3 Three outdoor units
Package unit name
Outdoor unit1
Component unit name
Outdoor unit2
Outdoor unit3
Outdoor Twinning Kit
Liquid
A
Indoor unit~Twinning pipe2
Gas
B
Liquid
C
Twinning pipe1~Twinning pipe2
Gas
D
PUHY-**Y(S)HM
PUHY-**T(S)HM
PUHY-**Y(S)HMU
PUHY-**T(S)HMU
PUHY-**Y(S)HC
A0
P950
P1000
P1050
P1100
P1150
P1200
P1250
EP700
EP750
EP800
EP850
EP900
P950
P1000
P1050
P1100
P1150
P1200
P1250
P264
P288
P312
P336
P360
P264
P288
P312
P336
P360
P850(-AH)
P900(-AH)
P950
P1000
P1050
P1100
P1150
P1200
P1250
B0
P400
P400
P400
P400
P450
P450
P450
EP300
EP300
EP300
EP300
EP300
P400
P400
P400
P400
P450
P450
P450
P120
P120
P120
P120
P120
P120
P120
P120
P120
P120
P350
P350
P400
P400
P400
P400
P400
P400
P450
C0
P300
P300
P350
P350
P350
P400
P450
EP200
P250
EP300
EP300
EP300
P300
P300
P350
P350
P350
P400
P450
P72
P96
P120
P120
P120
P72
P96
P120
P120
P120
P300
P300
P300
P300
P350
P350
P400
P400
P450
4 Three outdoor units
A0
B0
C0
D0
E0
F0
G0
H0
I0
D0
P250
P300
P300
P350
P350
P350
P350
EP200
EP200
EP200
P250
EP300
P250
P300
P300
P350
P350
P350
P350
P72
P72
P72
P96
P120
P72
P72
P72
P96
P120
P200
P250
P250
P300
P300
P350
P350
P400
P350
Unit model
A1
B1
C1
D1
E1
F1
Twinning pipe~Outdoor unit
E0
F0
G0
(Unit: mm[in])
H0
I0
A1
A2
A3
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
EP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
CMY-Y300VBK2 ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
PUHY-**YHM
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
CMY-Y300VBK2
ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
PUHY-**THM
PUHY-**YHMU
PUHY-**THMU
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
CMY-Y300VBK2
PUHY-**YHC
Liqrid
E or G or I
A2
B2
C2
D2
E2
F2
B1
B2
B3
P300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
EP300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
P300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
P96
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P96
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
2
3. Pipe Connection Example
Gas
F or H or J
A3
B3
C3
D3
E3
F3
Connect the pipes between outdoor units, referencing the figures below.
<For two outdoor units>
(Unit: mm[in])
C1
C2
C3
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
–
D1
D2
D3
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
E1
E2
E3
P450
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
F1
F2
F3
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P120
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P120
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P300
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
P450
–
–
–
ø28.58
[1-1/8]
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
P450
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
–
–
Field piping
Field-supplied
pipe
Twinning
Twinning kit
kit
Field piping pipe
Field-supplied
The length of the straight pipe must
Straight
pipe
mm [19-11/
be
500 mm
(19that
inch)isor500
longer.
16 in] or more
–
<For three outdoor units>
Field pipingpipe
Field-supplied
ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
Twinning
Twinning kit
kit
Field piping pipe
Field-supplied
Twinning kit
Twinning kit
Straight
pipe of
that
500 mm
The length
theisstraight
pipe must
[19-11/16 in] or more
be 500 mm (19 inch) or longer.
(3) Slope of twinning pipes
Make sure the slope of the twinning pipes are at an angle within ±15° to
the horizontal plane.
If the slope exceeds the specified angle, the unit may be damaged.
The length of the straight pipe must
be
500 mm
(19 that
inch)isor500
longer.
Straight
pipe
mm [19-11/
16 in] or more
Note: Refer to the figure below for the installation
Note: See
the of
following
drawing
position
the twinning
pipe.for the fitting position
of the twinning pipe.
Twinning
Reducerpipe
Use the pipes supplied in the twinning kit, and make sure the section of
the field-supplied pipe that connects to the twinning pipe has at least
500 mm [19-11/16 in] of straight section. (The section of the fieldsupplied pipe that connects to the twinning pipe must have at least 500
mm [19-11/16 in] of straight section.) If the straight section is less than
500 mm [19-11/16 in], it may result in equipment damage.
4. Insulation Cover Installation
Install the insulation cover on the twinning kit after brazing the pipes and twinning kit.
Insulate all refrigerant pipes. Insulate the liquid and gas pipes separately, and pipes located inside the unit as well as the outside.
Use heat-resistant insulation material (Heat resistant: at least 120 °C [248 °F], Thickness: liquid = 10 mm [13/32 in],
gas = 20 mm [13/16 in]). Position the edges of the insulation cover and heat-resistant insulation material so as not to leave a gap,
and then wrap the exterior perimeter of the pipe joints and middle with tape (field-supplied).
±15°
±15°
(4) The length of the straight pipe between indoor units and the twinning pipe
Field piping pipe
Field-supplied
The angle of tilt of the reducer should be within
Slope of the twinning pipes are at an angle within
±15° with the ground.
±15° to the horizontal plane
Insulation material (field supply)
Heat-resistant insulation material (field-supplied)
(5) Pipe connection
Field piping
Field-supplied
pipe
When connecting the twinning kit to the outdoor unit, note the following:
Make sure the pipes from the twinning pipe to the outdoor unit are sloped downwards (towards the twinning pipes).
· If the piping on the outdoor unit side (from the twinning pipe) exceeds 2 m [6 ft], ensure a trap (gas pipe only) within 2 m
[6 ft].
Make sure the height of the trap is 200 mm [7-7/8 in] or more.
If there is no trap, oil can accumulate inside the pipe, causing a shortage of oil and may damage the compressor.
<2 m [6 ft] or less>
100 mm
[4 in] or
more
To Indoor unit
Downward slope
Twinning pipe
m(6
[6ft)ft]
22 m
Upward slope
Twinning kit
Twinning
kit
Insulation
Insulationcover
cover
Insulation
cover
Insulation cover
200 mm
[7-7/8 in]
or more
)
Twinning pipe
*
Insulation
material
Heat-resistant
insulation
(field
supply)
material
(field-supplied)
To Indoor unit
Within
Less
than
Twinning pipe
2 m [6 ft]
Total pipe length = A+B<10 m [32 ft]
unit
3
Outdoor
unit
1 Outdoor
Outoor unit
1
Outoor unit
2 2 Outdoor
Outoor unitunit
3
· If the twinning pipe is installed above the base
of the outdoor unit, it should be no more than
200 mm [7-7/8 in].
Lapped
space
of tape
taping
Overlap
margin
of the
Tape
(field-supplied)
Tape
(field supply)
Twinning 1
Twinning 1
200 mm [7-7/8 in]
max
Twinning 2
As the insulation cover
contracts slightly, conduct
Insulation
covers
shrink. by
taping
in the
fieldcan
securely
Overlap the
tape as
shown
providing
lapped
parts
asin
the left figure so that there
shown
in the left, so that no gap
will be no gap in between the
will
exist on the insulation cover
insulation cover or fieldand
field insulation
supply insulation
installed
material.
material.
Heat-resistant
Insulation
material
insulation
(field
supply)material
(field-supplied)
Tape (field
(field-supplied)
Tape
supply)
Tape Tape
(field-supplied)
(field supply)
5. Miscellaneous Notes
Twinning 2
To Indoor
unit
To Indoor unit
Less than
200 mm
(7 inch)
Field-supplied
Field pipingpipe
<More than 2 m [6 ft] apart>
To Indoor unit
To Indoor unit
Field-supplied
Field pipingpipe
3
Secure the field-supplied pipes with a pipe cover and a cable tie in place to keep them from coming in contact with other pipes as
necessary.
4
WT05134X02
(2) Accessory piping parts
MITSUBISHI ELECTRIC MULTI AIR CONDITIONERS OPTIONAL PARTS
Model
CMY-Y100VBK2, Y200VBK2, Y300VBK2
Outdoor Twinning Kit Installation Manual
CMY-Y100VBK2
CMY-Y200VBK2
CMY-Y300VBK2
• For your safety, thoroughly read the following instructions prior to installation.
WARNING
Incorrect handling can result in death or serious injury.
CAUTION
Incorrect handling can result in bodily injury and/or structure damage.
Properly install all parts according to the instructions
in the Installation Manual.
• Improper installation may result in refrigerant gas leakage and
equipment damage.
• If the wrong twinning pipe or wrong size connecting pipe is
used, air conditioning performance will suffer.
Do not make any modifications or alterations.
Consult your dealer for repair.
When installing or relocating the unit, check that no
substance other than the specified refrigerant
(R410A) enters the refrigerant circuit.
After installation, check for a refrigerant leak.
• If leaked refrigerant comes in contact with a heat source, such
as a fan heater, stove, or electric grill, toxic gases will be
generated.
PUHY-**Y(S)HM
Do not touch the refrigerant pipes and refrigerant
circuit components with bare hands during and
immediately after operation.
• During or immediately after operation, certain parts of the unit
such as pipes and compressor may be either very cold or hot,
depending on the state of the refrigerant in the unit at the time.
To reduce the risk of frostbites and burns, do not touch these
parts with bare hands.
PUHY-**T(S)HM
PUHY-**Y(S)HMU
1. Confirming the Package Contents
Twinning kit
Twinning
kit
The following twinning and accessory piping parts are included with the Twinning Kit (CMYY100VBK2, CMY-Y200VBK2, and CMY-Y300VBK2). Verify that all items are present before
starting installation.
After checking, prepare the twinning kit by connecting the twinning pipes B, C, and D to the
twinning pipe A.
*Always use the twinning pipes included in the kit when preparing the twinning kit.
If the pipes on site do not fit the parts in the kit, use the accessory piping parts listed below.
L-shape
pipe
Dd(After
L-shape
pipe
(Afterthe
the twinning)
twinning)
Insulation
Insulationcover
cover
Twinning
TwinningaA
PUHY-**T(S)HMU
PUHY-**Y(S)HMC
b (Before
twinning)
Pipe c (After the twinning)
Pipe Pipe
B (Before
the the
twinning)
Pipe C (After the twinning)
(1) Twinning pipes
(Unit: mm[in])
Label
Liquid
A
Gas
D
Liquid
C
Gas
B
Liquid
Second row
A (Red)
Liquid
First row
C (Red)
Gas
Second row
D (Red)
Gas
First row
B (Red)
Twinning A
CMY-Y100VBK2
CMY-Y200VBK2
CMY-Y300VBK2
ID15.88[5/8]×ID12.7[1/2]×
ID12.7[1/2]
ID28.58[1-1/8]×ID25.4[1]×
ID25.4[1]
ID19.05[3/4]×ID15.88[5/8]×
ID15.88[5/8]
ID31.75[1-1/4]×ID28.58
[1-1/8]×ID28.58[1-1/8]
ID15.88[5/8]×ID12.7[1/2]×
ID12.7[1/2]
ID19.05[3/4]×ID15.88[5/8]×
ID15.88[5/8]
ID28.58[1-1/8]×ID25.4[1]×
ID25.4[1]
ID31.75[1-1/4]×ID28.58
[1-1/8]×ID28.58[1-1/8]
Pipe B (Before the twinning)
OD15.88[5/8]-ID15.88[5/8]
L83[3-9/32]
OD28.58[1-1/8]-ID28.58[1-1/8]
L342[13-15/32]
OD19.05[3/4]-ID19.05[3/4]
L85[3-3/8]
OD31.75[1-1/4]-ID34.93[1-3/8]
L337[13-9/32]
OD15.88[5/8]-ID19.05[3/4]
L85[3-3/8]
OD19.05[3/4]-ID19.05[3/4]
L85[3-3/8]
OD28.58[1-1/8]-ID34.93[1-3/8]
L337[13-9/32]
OD31.75[1-1/4]-ID38.1[1-1/2]
L339[13-3/8]
OD15.88[5/8]-ID12.7[1/2] (2)
Gas
OD34.93[1-3/8]-ID41.28[1-5/8]
Liquid
OD12.7[1/2]-ID9.52[3/8]
OD12.7[1/2]-ID15.88[5/8] (2)
OD15.88[5/8]-ID9.52[3/8]
OD15.88[5/8]-ID12.7[1/2]
Gas
OD28.58[1-1/8]-ID22.2[7/8] (3)
OD38.1[1-1/2]-ID41.28[1-5/8]
OD28.58[1-1/8]-ID19.05[3/4] (2)
OD38.1[1-1/2]-ID34.93[1-3/8]
Outdoor
unit
Outdoor unit
1 1
Outdoor
unit2 2
Outdoor unit
Pipe C (After the twinning)
L-shape pipe D (After the twinning)
OD12.7[1/2]-ID12.7[1/2]
OD12.7[1/2]-ID12.7[1/2]
L128[5-1/16]
OD25.4[1]-ID22.2[7/8]
OD25.4[1]-ID22.2[7/8]
L190[7-1/2]
OD15.88[5/8]-ID15.88[5/8]
OD15.88[5/8]-ID15.88[5/8]
L123[4-27/32]
OD28.58[1-1/8]-ID28.58[1-1/8]
OD28.58[1-1/8]-ID28.58[1-1/8]
L192[7-9/16]
OD12.7[1/2]-ID12.7[1/2]
OD12.7[1/2]-ID12.7[1/2]
L128[5-1/16]
OD15.88[5/8]-ID19.05[3/4]
OD15.88[5/8]-ID15.88[5/8]
L125[4-15/16]
OD25.4[1]-ID28.58[1-1/8]
OD25.4[1]-ID28.58[1-1/8]
L192[7-9/16]
OD28.58[1-1/8]-ID34.93[1-3/8]
OD28.58[1-1/8]-ID28.58[1-1/8]
L187[7-3/8]
Insulation cover
C
PUHY-**Y(S)HC
Instruction
Small
Large
Small
A0
P500
P550
P600
P650
P700
P750
P800
P850
P900
EP400
EP450
EP500
EP550
EP600
EP650
HP400
HP500
P500
P550
P600
P650
P700
P750
P800
P850
P900
P144
P168
P192
P216
P240
P144
P168
P192
P216
P240
HP144
HP192
HP400
HP500
P450(-AH)
P500
P550
P600
P650
P700
P750
P800
P850
P900
Ee
c
Aa
To Indoor
unit unit
To
Indoor
Liquid twinning pipe
To Indoor
unit unit
To
Indoor
Gas twinning pipe
Gas twinning pipe
Liquid twinning pipe
Ff
d
Bb
2 Two outdoor units
1 Two outdoor units
Package unit name
Outdoor unit 1
Component unit name
Outdoor unit 2
OutIdoor Twinning Kit
Liquid
A
Indoor unit~Twinning pipe
Gas
B
* See the Installation Manual that came with the outdoor unit for installation instructions.
Section
Liquid
D
CAUTION
Model
OD22.2[7/8]-ID19.05[3/4] (2)
1 Field-supply the pipes to be connected to the kit.
2 Choose the correct size pipe using the table below. Connect
the field-supplied pipe to the twinning kit for the sizes in the
table that are marked with an asterisk (*).
3 If the pipe was cut with a pipe cutter, remove the burrs and
eliminate foreign materials before connecting.
• Any presence of foreign substance or air can cause abnormal
pressure rise or explosion.
• Plastic bags can pose suffocation and choking hazards: keep
them out of the reach of children. Tear the plastics bags before
disposing of them.
OD15.88[5/8]-ID12.7[1/2]
OD22.2[7/8]-ID28.58[1-1/8]
(1) Two outdoor units
Only a dealer or qualified technician should perform
installation.
Properly dispose of packing materials.
OD12.7[1/2]-ID9.52[3/8] (2)
Gas
2. Selecting the Correct Size Refrigerant Pipes and
Using the Twinning Kit
WARNING
• If refrigerant leaks and comes in contact with an open flame,
toxic gases will be generated.
Liquid
• Refrigerant pipes other than the ones provided in the kit.
• Heat-resistant insulation material (for field-supplied refrigerant pipes)
• Insulation cover tape
• Thoroughly read the following “Safety Precautions” to ensure proper installation.
• Observe the following important safety precautions at all times.
• Hazards that can occur from incorrect handling are classified by the symbols below:
In the event of a refrigerant leak, thoroughly ventilate
the room.
Supplied pipe
(3) List of field-supplied parts
Safety Precautions
• Improper installation may result in water leakage, electric shock,
or fire.
(Unit: mm[in])
Section
A0
B0
C0
D0
E0
F0
B0
P250
P300
P350
P350
P350
P400
P450
P450
P450
EP200
P250
EP300
EP300
EP300
P350
HP200
HP250
P250
P300
P350
P350
P350
P400
P450
P450
P450
P72
P96
P120
P120
P120
P72
P96
P120
P120
P120
HP72
HP96
HP200
HP250
P250
P250
P300
P350
P350
P350
P400
P400
P450
P450
C0
P250
P250
P250
P300
P350
P350
P350
P400
P450
EP200
EP200
EP200
P250
EP300
EP300
HP200
HP250
P250
P250
P250
P300
P350
P350
P350
P400
P450
P72
P72
P72
P96
P120
P72
P72
P72
P96
P120
HP72
HP96
HP200
HP250
P200
P250
P250
P250
P300
P350
P350
P400
P400
P450
Liquid
C or E
A2
B2
C2
D2
E2
F2
Unit model
A1
B1
C1
D1
E1
F1
Twinning pipe~Outdoor unit
(Unit: mm[in])
F0
D0
E0
CMY-Y100VBK2
ø15.88
[5/8]
CMY-Y200VBK2
ø19.05
[3/4]
ø28.58
[1-1/8]
ø34.93
[1-3/8]
ø41.28
[1-5/8](*)
ø12.7[1/2]
PUHY-**YHM
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y200VBK2
CMY-Y100VBK2
PUHY-**THM
ø34.93
[1-3/8]
ø19.05
[3/4]
ø41.28
[1-5/8](*)
PUHY-**YHMU
ø28.58
[1-1/8]
ø15.88
[5/8]
PUHY-**THMU
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y200VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
ø15.88
[5/8]
ø15.88
[5/8]
ø28.58
[1-1/8]
ø28.58
[1-1/8]
PUHY-**YHMC
ø28.58
[1-1/8]
ø15.88
[5/8]
PUHY-**YHC
ø34.93
[1-3/8]
ø19.05
[3/4]
A1
A2
A3
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
EP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
Outdoor
unit
Outdoor unit
1 1
ø41.28
[1-5/8](*)
B1
B2
B3
P300
ø12.7
[1/2]
ø22.2
[7/8]
EP300
ø12.7
[1/2]
ø22.2
[7/8]
HP250
ø9.52
[3/8](*)
ø22.2
[7/8]
P300
ø12.7
[1/2]
ø22.2
[7/8]
P96
ø9.52
[3/8](*)
ø22.2
[7/8]
P96
ø9.52
[3/8](*)
ø22.2
[7/8]
HP96
ø9.52
[3/8](*)
ø22.2
[7/8]
HP250
ø9.52
[3/8](*)
ø22.2
[7/8]
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
Gas
D or F
A3
B3
C3
D3
E3
F3
(Unit: mm[in])
C1
C2
C3
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8](*)
–
D1
D2
D3
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
–
E1
E2
E3
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
–
F1
F2
F3
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8](*)
P120
ø12.7
[1/2]
ø22.2
[7/8]
P120
ø12.7
[1/2]
ø22.2
[7/8]
–
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
–
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P300
ø12.7
[1/2]
ø22.2
[7/8]
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
Outdoor
unit
Outdoor unit
2 2
Outdoor
unit
Outdoor unit
3 3
(2) Three outdoor units
Large
1 Field-supply the pipes to be connected to the kit.
2 Choose the correct size pipe using the table below.
Connect the field-supplied pipe to the twinning kit
for the sizes in the table that are marked with an
asterisk (*).
3 If the pipe was cut with a pipe cutter, remove the
burrs and eliminate foreign materials before
connecting.
1
(This sheet)
Small
Small
Large
Large
cC
Gg
eE
f
twinning
Liquid 1Liquid
twinning
pipe
pipe 1 D
d
Hh
F
Ii
Jj
twinning
pipe 1
Gas 1Gas
twinning
pipe
Aa
To
Indoor
To Indoor
unit unit
Liquid twinning pipe 2
To Indoor unit
Gas twinning pipe 2
Liquid 2 twinning pipe
Bb
To Indoor unit
Gas 2 twinning pipe
1
3 Three outdoor units
Package unit name
Outdoor unit1
Component unit name
Outdoor unit2
Outdoor unit3
Outdoor Twinning Kit
Liquid
A
Indoor unit~Twinning pipe2
Gas
B
Liquid
C
Twinning pipe1~Twinning pipe2
Gas
D
PUHY-**Y(S)HM
PUHY-**T(S)HM
PUHY-**Y(S)HMU
PUHY-**T(S)HMU
PUHY-**Y(S)HC
A0
P950
P1000
P1050
P1100
P1150
P1200
P1250
EP700
EP750
EP800
EP850
EP900
P950
P1000
P1050
P1100
P1150
P1200
P1250
P264
P288
P312
P336
P360
P264
P288
P312
P336
P360
P850(-AH)
P900(-AH)
P950
P1000
P1050
P1100
P1150
P1200
P1250
B0
P400
P400
P400
P400
P450
P450
P450
EP300
EP300
EP300
EP300
EP300
P400
P400
P400
P400
P450
P450
P450
P120
P120
P120
P120
P120
P120
P120
P120
P120
P120
P350
P350
P400
P400
P400
P400
P400
P400
P450
C0
P300
P300
P350
P350
P350
P400
P450
EP200
P250
EP300
EP300
EP300
P300
P300
P350
P350
P350
P400
P450
P72
P96
P120
P120
P120
P72
P96
P120
P120
P120
P300
P300
P300
P300
P350
P350
P400
P400
P450
4 Three outdoor units
A0
B0
C0
D0
E0
F0
G0
H0
I0
D0
P250
P300
P300
P350
P350
P350
P350
EP200
EP200
EP200
P250
EP300
P250
P300
P300
P350
P350
P350
P350
P72
P72
P72
P96
P120
P72
P72
P72
P96
P120
P200
P250
P250
P300
P300
P350
P350
P400
P350
Unit model
A1
B1
C1
D1
E1
F1
Twinning pipe~Outdoor unit
E0
F0
G0
(Unit: mm[in])
H0
I0
A1
A2
A3
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
EP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
CMY-Y300VBK2 ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
PUHY-**YHM
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
CMY-Y300VBK2
ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
PUHY-**THM
PUHY-**YHMU
PUHY-**THMU
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
CMY-Y300VBK2
PUHY-**YHC
Liqrid
E or G or I
A2
B2
C2
D2
E2
F2
B1
B2
B3
P300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
EP300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
P300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
P96
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P96
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
2
3. Pipe Connection Example
Gas
F or H or J
A3
B3
C3
D3
E3
F3
Connect the pipes between outdoor units, referencing the figures below.
<For two outdoor units>
(Unit: mm[in])
C1
C2
C3
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
–
D1
D2
D3
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
E1
E2
E3
P450
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
F1
F2
F3
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P120
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P120
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P300
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
P450
–
–
–
ø28.58
[1-1/8]
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
P450
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
–
–
Field piping
Field-supplied
pipe
Twinning
Twinning kit
kit
Field piping pipe
Field-supplied
The length of the straight pipe must
Straight
pipe
mm [19-11/
be
500 mm
(19that
inch)isor500
longer.
16 in] or more
–
<For three outdoor units>
Field pipingpipe
Field-supplied
ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
Twinning
Twinning kit
kit
Field piping pipe
Field-supplied
Twinning kit
Twinning kit
Straight
pipe of
that
500 mm
The length
theisstraight
pipe must
[19-11/16 in] or more
be 500 mm (19 inch) or longer.
(3) Slope of twinning pipes
Make sure the slope of the twinning pipes are at an angle within ±15° to
the horizontal plane.
If the slope exceeds the specified angle, the unit may be damaged.
The length of the straight pipe must
be
500 mm
(19 that
inch)isor500
longer.
Straight
pipe
mm [19-11/
16 in] or more
Note: Refer to the figure below for the installation
Note: See
the of
following
drawing
position
the twinning
pipe.for the fitting position
of the twinning pipe.
Twinning
Reducerpipe
Use the pipes supplied in the twinning kit, and make sure the section of
the field-supplied pipe that connects to the twinning pipe has at least
500 mm [19-11/16 in] of straight section. (The section of the fieldsupplied pipe that connects to the twinning pipe must have at least 500
mm [19-11/16 in] of straight section.) If the straight section is less than
500 mm [19-11/16 in], it may result in equipment damage.
4. Insulation Cover Installation
Install the insulation cover on the twinning kit after brazing the pipes and twinning kit.
Insulate all refrigerant pipes. Insulate the liquid and gas pipes separately, and pipes located inside the unit as well as the outside.
Use heat-resistant insulation material (Heat resistant: at least 120 °C [248 °F], Thickness: liquid = 10 mm [13/32 in],
gas = 20 mm [13/16 in]). Position the edges of the insulation cover and heat-resistant insulation material so as not to leave a gap,
and then wrap the exterior perimeter of the pipe joints and middle with tape (field-supplied).
±15°
±15°
(4) The length of the straight pipe between indoor units and the twinning pipe
Field piping pipe
Field-supplied
The angle of tilt of the reducer should be within
Slope of the twinning pipes are at an angle within
±15° with the ground.
±15° to the horizontal plane
Insulation material (field supply)
Heat-resistant insulation material (field-supplied)
(5) Pipe connection
Field piping
Field-supplied
pipe
When connecting the twinning kit to the outdoor unit, note the following:
Make sure the pipes from the twinning pipe to the outdoor unit are sloped downwards (towards the twinning pipes).
· If the piping on the outdoor unit side (from the twinning pipe) exceeds 2 m [6 ft], ensure a trap (gas pipe only) within 2 m
[6 ft].
Make sure the height of the trap is 200 mm [7-7/8 in] or more.
If there is no trap, oil can accumulate inside the pipe, causing a shortage of oil and may damage the compressor.
<2 m [6 ft] or less>
100 mm
[4 in] or
more
To Indoor unit
Downward slope
Twinning pipe
m(6
[6ft)ft]
22 m
Upward slope
Twinning kit
Twinning
kit
Insulation
Insulationcover
cover
Insulation
cover
Insulation cover
200 mm
[7-7/8 in]
or more
)
Twinning pipe
*
Insulation
material
Heat-resistant
insulation
(field
supply)
material
(field-supplied)
To Indoor unit
Within
Less
than
Twinning pipe
2 m [6 ft]
Total pipe length = A+B<10 m [32 ft]
unit
3
Outdoor
unit
1 Outdoor
Outoor unit
1
Outoor unit
2 2 Outdoor
Outoor unitunit
3
· If the twinning pipe is installed above the base
of the outdoor unit, it should be no more than
200 mm [7-7/8 in].
Lapped
space
of tape
taping
Overlap
margin
of the
Tape
(field-supplied)
Tape
(field supply)
Twinning 1
Twinning 1
200 mm [7-7/8 in]
max
Twinning 2
As the insulation cover
contracts slightly, conduct
Insulation
covers
shrink. by
taping
in the
fieldcan
securely
Overlap the
tape as
shown
providing
lapped
parts
asin
the left figure so that there
shown
in the left, so that no gap
will be no gap in between the
will
exist on the insulation cover
insulation cover or fieldand
field insulation
supply insulation
installed
material.
material.
Heat-resistant
Insulation
material
insulation
(field
supply)material
(field-supplied)
Tape (field
(field-supplied)
Tape
supply)
Tape Tape
(field-supplied)
(field supply)
5. Miscellaneous Notes
Twinning 2
To Indoor
unit
To Indoor unit
Less than
200 mm
(7 inch)
Field-supplied
Field pipingpipe
<More than 2 m [6 ft] apart>
To Indoor unit
To Indoor unit
Field-supplied
Field pipingpipe
3
Secure the field-supplied pipes with a pipe cover and a cable tie in place to keep them from coming in contact with other pipes as
necessary.
4
WT05134X02
(2) Accessory piping parts
MITSUBISHI ELECTRIC MULTI AIR CONDITIONERS OPTIONAL PARTS
Model
CMY-Y100VBK2, Y200VBK2, Y300VBK2
Outdoor Twinning Kit Installation Manual
CMY-Y100VBK2
CMY-Y200VBK2
CMY-Y300VBK2
• For your safety, thoroughly read the following instructions prior to installation.
WARNING
Incorrect handling can result in death or serious injury.
CAUTION
Incorrect handling can result in bodily injury and/or structure damage.
Properly install all parts according to the instructions
in the Installation Manual.
• Improper installation may result in refrigerant gas leakage and
equipment damage.
• If the wrong twinning pipe or wrong size connecting pipe is
used, air conditioning performance will suffer.
Do not make any modifications or alterations.
Consult your dealer for repair.
When installing or relocating the unit, check that no
substance other than the specified refrigerant
(R410A) enters the refrigerant circuit.
After installation, check for a refrigerant leak.
• If leaked refrigerant comes in contact with a heat source, such
as a fan heater, stove, or electric grill, toxic gases will be
generated.
PUHY-**Y(S)HM
Do not touch the refrigerant pipes and refrigerant
circuit components with bare hands during and
immediately after operation.
• During or immediately after operation, certain parts of the unit
such as pipes and compressor may be either very cold or hot,
depending on the state of the refrigerant in the unit at the time.
To reduce the risk of frostbites and burns, do not touch these
parts with bare hands.
PUHY-**T(S)HM
PUHY-**Y(S)HMU
1. Confirming the Package Contents
Twinning kit
Twinning
kit
The following twinning and accessory piping parts are included with the Twinning Kit (CMYY100VBK2, CMY-Y200VBK2, and CMY-Y300VBK2). Verify that all items are present before
starting installation.
After checking, prepare the twinning kit by connecting the twinning pipes B, C, and D to the
twinning pipe A.
*Always use the twinning pipes included in the kit when preparing the twinning kit.
If the pipes on site do not fit the parts in the kit, use the accessory piping parts listed below.
L-shape
pipe
Dd(After
L-shape
pipe
(Afterthe
the twinning)
twinning)
Insulation
Insulationcover
cover
Twinning
TwinningaA
PUHY-**T(S)HMU
PUHY-**Y(S)HMC
b (Before
twinning)
Pipe c (After the twinning)
Pipe Pipe
B (Before
the the
twinning)
Pipe C (After the twinning)
(1) Twinning pipes
(Unit: mm[in])
Label
Liquid
A
Gas
D
Liquid
C
Gas
B
Liquid
Second row
A (Red)
Liquid
First row
C (Red)
Gas
Second row
D (Red)
Gas
First row
B (Red)
Twinning A
CMY-Y100VBK2
CMY-Y200VBK2
CMY-Y300VBK2
ID15.88[5/8]×ID12.7[1/2]×
ID12.7[1/2]
ID28.58[1-1/8]×ID25.4[1]×
ID25.4[1]
ID19.05[3/4]×ID15.88[5/8]×
ID15.88[5/8]
ID31.75[1-1/4]×ID28.58
[1-1/8]×ID28.58[1-1/8]
ID15.88[5/8]×ID12.7[1/2]×
ID12.7[1/2]
ID19.05[3/4]×ID15.88[5/8]×
ID15.88[5/8]
ID28.58[1-1/8]×ID25.4[1]×
ID25.4[1]
ID31.75[1-1/4]×ID28.58
[1-1/8]×ID28.58[1-1/8]
Pipe B (Before the twinning)
OD15.88[5/8]-ID15.88[5/8]
L83[3-9/32]
OD28.58[1-1/8]-ID28.58[1-1/8]
L342[13-15/32]
OD19.05[3/4]-ID19.05[3/4]
L85[3-3/8]
OD31.75[1-1/4]-ID34.93[1-3/8]
L337[13-9/32]
OD15.88[5/8]-ID19.05[3/4]
L85[3-3/8]
OD19.05[3/4]-ID19.05[3/4]
L85[3-3/8]
OD28.58[1-1/8]-ID34.93[1-3/8]
L337[13-9/32]
OD31.75[1-1/4]-ID38.1[1-1/2]
L339[13-3/8]
OD15.88[5/8]-ID12.7[1/2] (2)
Gas
OD34.93[1-3/8]-ID41.28[1-5/8]
Liquid
OD12.7[1/2]-ID9.52[3/8]
OD12.7[1/2]-ID15.88[5/8] (2)
OD15.88[5/8]-ID9.52[3/8]
OD15.88[5/8]-ID12.7[1/2]
Gas
OD28.58[1-1/8]-ID22.2[7/8] (3)
OD38.1[1-1/2]-ID41.28[1-5/8]
OD28.58[1-1/8]-ID19.05[3/4] (2)
OD38.1[1-1/2]-ID34.93[1-3/8]
Outdoor
unit
Outdoor unit
1 1
Outdoor
unit2 2
Outdoor unit
Pipe C (After the twinning)
L-shape pipe D (After the twinning)
OD12.7[1/2]-ID12.7[1/2]
OD12.7[1/2]-ID12.7[1/2]
L128[5-1/16]
OD25.4[1]-ID22.2[7/8]
OD25.4[1]-ID22.2[7/8]
L190[7-1/2]
OD15.88[5/8]-ID15.88[5/8]
OD15.88[5/8]-ID15.88[5/8]
L123[4-27/32]
OD28.58[1-1/8]-ID28.58[1-1/8]
OD28.58[1-1/8]-ID28.58[1-1/8]
L192[7-9/16]
OD12.7[1/2]-ID12.7[1/2]
OD12.7[1/2]-ID12.7[1/2]
L128[5-1/16]
OD15.88[5/8]-ID19.05[3/4]
OD15.88[5/8]-ID15.88[5/8]
L125[4-15/16]
OD25.4[1]-ID28.58[1-1/8]
OD25.4[1]-ID28.58[1-1/8]
L192[7-9/16]
OD28.58[1-1/8]-ID34.93[1-3/8]
OD28.58[1-1/8]-ID28.58[1-1/8]
L187[7-3/8]
Insulation cover
C
PUHY-**Y(S)HC
Instruction
Small
Large
Small
A0
P500
P550
P600
P650
P700
P750
P800
P850
P900
EP400
EP450
EP500
EP550
EP600
EP650
HP400
HP500
P500
P550
P600
P650
P700
P750
P800
P850
P900
P144
P168
P192
P216
P240
P144
P168
P192
P216
P240
HP144
HP192
HP400
HP500
P450(-AH)
P500
P550
P600
P650
P700
P750
P800
P850
P900
Ee
c
Aa
To Indoor
unit unit
To
Indoor
Liquid twinning pipe
To Indoor
unit unit
To
Indoor
Gas twinning pipe
Gas twinning pipe
Liquid twinning pipe
Ff
d
Bb
2 Two outdoor units
1 Two outdoor units
Package unit name
Outdoor unit 1
Component unit name
Outdoor unit 2
OutIdoor Twinning Kit
Liquid
A
Indoor unit~Twinning pipe
Gas
B
* See the Installation Manual that came with the outdoor unit for installation instructions.
Section
Liquid
D
CAUTION
Model
OD22.2[7/8]-ID19.05[3/4] (2)
1 Field-supply the pipes to be connected to the kit.
2 Choose the correct size pipe using the table below. Connect
the field-supplied pipe to the twinning kit for the sizes in the
table that are marked with an asterisk (*).
3 If the pipe was cut with a pipe cutter, remove the burrs and
eliminate foreign materials before connecting.
• Any presence of foreign substance or air can cause abnormal
pressure rise or explosion.
• Plastic bags can pose suffocation and choking hazards: keep
them out of the reach of children. Tear the plastics bags before
disposing of them.
OD15.88[5/8]-ID12.7[1/2]
OD22.2[7/8]-ID28.58[1-1/8]
(1) Two outdoor units
Only a dealer or qualified technician should perform
installation.
Properly dispose of packing materials.
OD12.7[1/2]-ID9.52[3/8] (2)
Gas
2. Selecting the Correct Size Refrigerant Pipes and
Using the Twinning Kit
WARNING
• If refrigerant leaks and comes in contact with an open flame,
toxic gases will be generated.
Liquid
• Refrigerant pipes other than the ones provided in the kit.
• Heat-resistant insulation material (for field-supplied refrigerant pipes)
• Insulation cover tape
• Thoroughly read the following “Safety Precautions” to ensure proper installation.
• Observe the following important safety precautions at all times.
• Hazards that can occur from incorrect handling are classified by the symbols below:
In the event of a refrigerant leak, thoroughly ventilate
the room.
Supplied pipe
(3) List of field-supplied parts
Safety Precautions
• Improper installation may result in water leakage, electric shock,
or fire.
(Unit: mm[in])
Section
A0
B0
C0
D0
E0
F0
B0
P250
P300
P350
P350
P350
P400
P450
P450
P450
EP200
P250
EP300
EP300
EP300
P350
HP200
HP250
P250
P300
P350
P350
P350
P400
P450
P450
P450
P72
P96
P120
P120
P120
P72
P96
P120
P120
P120
HP72
HP96
HP200
HP250
P250
P250
P300
P350
P350
P350
P400
P400
P450
P450
C0
P250
P250
P250
P300
P350
P350
P350
P400
P450
EP200
EP200
EP200
P250
EP300
EP300
HP200
HP250
P250
P250
P250
P300
P350
P350
P350
P400
P450
P72
P72
P72
P96
P120
P72
P72
P72
P96
P120
HP72
HP96
HP200
HP250
P200
P250
P250
P250
P300
P350
P350
P400
P400
P450
Liquid
C or E
A2
B2
C2
D2
E2
F2
Unit model
A1
B1
C1
D1
E1
F1
Twinning pipe~Outdoor unit
(Unit: mm[in])
F0
D0
E0
CMY-Y100VBK2
ø15.88
[5/8]
CMY-Y200VBK2
ø19.05
[3/4]
ø28.58
[1-1/8]
ø34.93
[1-3/8]
ø41.28
[1-5/8](*)
ø12.7[1/2]
PUHY-**YHM
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y100VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
CMY-Y200VBK2
CMY-Y100VBK2
PUHY-**THM
ø34.93
[1-3/8]
ø19.05
[3/4]
ø41.28
[1-5/8](*)
PUHY-**YHMU
ø28.58
[1-1/8]
ø15.88
[5/8]
PUHY-**THMU
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y100VBK2
CMY-Y200VBK2
ø15.88
[5/8]
ø28.58
[1-1/8]
ø15.88
[5/8]
ø15.88
[5/8]
ø28.58
[1-1/8]
ø28.58
[1-1/8]
PUHY-**YHMC
ø28.58
[1-1/8]
ø15.88
[5/8]
PUHY-**YHC
ø34.93
[1-3/8]
ø19.05
[3/4]
A1
A2
A3
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
EP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
HP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
Outdoor
unit
Outdoor unit
1 1
ø41.28
[1-5/8](*)
B1
B2
B3
P300
ø12.7
[1/2]
ø22.2
[7/8]
EP300
ø12.7
[1/2]
ø22.2
[7/8]
HP250
ø9.52
[3/8](*)
ø22.2
[7/8]
P300
ø12.7
[1/2]
ø22.2
[7/8]
P96
ø9.52
[3/8](*)
ø22.2
[7/8]
P96
ø9.52
[3/8](*)
ø22.2
[7/8]
HP96
ø9.52
[3/8](*)
ø22.2
[7/8]
HP250
ø9.52
[3/8](*)
ø22.2
[7/8]
P250
ø9.52
[3/8](*)
ø22.2
[7/8]
Gas
D or F
A3
B3
C3
D3
E3
F3
(Unit: mm[in])
C1
C2
C3
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8](*)
–
D1
D2
D3
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
–
E1
E2
E3
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
–
F1
F2
F3
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8](*)
P120
ø12.7
[1/2]
ø22.2
[7/8]
P120
ø12.7
[1/2]
ø22.2
[7/8]
–
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
–
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P300
ø12.7
[1/2]
ø22.2
[7/8]
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P400
ø15.88
[5/8]
ø28.58
[1-1/8]
P450
ø15.88
[5/8]
ø28.58
[1-1/8]
Outdoor
unit
Outdoor unit
2 2
Outdoor
unit
Outdoor unit
3 3
(2) Three outdoor units
Large
1 Field-supply the pipes to be connected to the kit.
2 Choose the correct size pipe using the table below.
Connect the field-supplied pipe to the twinning kit
for the sizes in the table that are marked with an
asterisk (*).
3 If the pipe was cut with a pipe cutter, remove the
burrs and eliminate foreign materials before
connecting.
1
(This sheet)
Small
Small
Large
Large
cC
Gg
eE
f
twinning
Liquid 1Liquid
twinning
pipe
pipe 1 D
d
Hh
F
Ii
Jj
twinning
pipe 1
Gas 1Gas
twinning
pipe
Aa
To
Indoor
To Indoor
unit unit
Liquid twinning pipe 2
To Indoor unit
Gas twinning pipe 2
Liquid 2 twinning pipe
Bb
To Indoor unit
Gas 2 twinning pipe
1
3 Three outdoor units
Package unit name
Outdoor unit1
Component unit name
Outdoor unit2
Outdoor unit3
Outdoor Twinning Kit
Liquid
A
Indoor unit~Twinning pipe2
Gas
B
Liquid
C
Twinning pipe1~Twinning pipe2
Gas
D
PUHY-**Y(S)HM
PUHY-**T(S)HM
PUHY-**Y(S)HMU
PUHY-**T(S)HMU
PUHY-**Y(S)HC
A0
P950
P1000
P1050
P1100
P1150
P1200
P1250
EP700
EP750
EP800
EP850
EP900
P950
P1000
P1050
P1100
P1150
P1200
P1250
P264
P288
P312
P336
P360
P264
P288
P312
P336
P360
P850(-AH)
P900(-AH)
P950
P1000
P1050
P1100
P1150
P1200
P1250
B0
P400
P400
P400
P400
P450
P450
P450
EP300
EP300
EP300
EP300
EP300
P400
P400
P400
P400
P450
P450
P450
P120
P120
P120
P120
P120
P120
P120
P120
P120
P120
P350
P350
P400
P400
P400
P400
P400
P400
P450
C0
P300
P300
P350
P350
P350
P400
P450
EP200
P250
EP300
EP300
EP300
P300
P300
P350
P350
P350
P400
P450
P72
P96
P120
P120
P120
P72
P96
P120
P120
P120
P300
P300
P300
P300
P350
P350
P400
P400
P450
4 Three outdoor units
A0
B0
C0
D0
E0
F0
G0
H0
I0
D0
P250
P300
P300
P350
P350
P350
P350
EP200
EP200
EP200
P250
EP300
P250
P300
P300
P350
P350
P350
P350
P72
P72
P72
P96
P120
P72
P72
P72
P96
P120
P200
P250
P250
P300
P300
P350
P350
P400
P350
Unit model
A1
B1
C1
D1
E1
F1
Twinning pipe~Outdoor unit
E0
F0
G0
(Unit: mm[in])
H0
I0
A1
A2
A3
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
EP200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P72
ø9.52
[3/8](*)
ø19.05
[3/4](*)
P200
ø9.52
[3/8](*)
ø19.05
[3/4](*)
CMY-Y300VBK2 ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
PUHY-**YHM
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
CMY-Y300VBK2
ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
PUHY-**THM
PUHY-**YHMU
PUHY-**THMU
ø34.93
ø19.05 [1-3/8](*) ø19.05 ø34.93
CMY-Y300VBK2 [3/4]
[3/4] [1-3/8]
ø41.28
[1-5/8](*)
CMY-Y300VBK2
PUHY-**YHC
Liqrid
E or G or I
A2
B2
C2
D2
E2
F2
B1
B2
B3
P300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
EP300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
P300
ø12.7
[1/2](*)
ø 22.2
[7/8](*)
P96
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P96
ø9.52
[3/8](*)
ø22.2
[7/8](*)
P250
ø9.52
[3/8](*)
ø22.2
[7/8](*)
2
3. Pipe Connection Example
Gas
F or H or J
A3
B3
C3
D3
E3
F3
Connect the pipes between outdoor units, referencing the figures below.
<For two outdoor units>
(Unit: mm[in])
C1
C2
C3
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
–
D1
D2
D3
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
E1
E2
E3
P450
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
F1
F2
F3
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P120
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P120
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P300
ø12.7
[1/2](*)
ø22.2
[7/8](*)
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
P450
–
–
–
ø28.58
[1-1/8]
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
–
P350
ø12.7
[1/2](*)
ø28.58
[1-1/8]
P400
ø15.88
[5/8](*)
ø28.58
[1-1/8]
P450
ø15.88
[5/8](*)
ø28.58
[1-1/8]
–
–
–
Field piping
Field-supplied
pipe
Twinning
Twinning kit
kit
Field piping pipe
Field-supplied
The length of the straight pipe must
Straight
pipe
mm [19-11/
be
500 mm
(19that
inch)isor500
longer.
16 in] or more
–
<For three outdoor units>
Field pipingpipe
Field-supplied
ø19.05 ø41.28 ø19.05 ø34.93
[3/4] [1-5/8](*) [3/4] [1-3/8]
Twinning
Twinning kit
kit
Field piping pipe
Field-supplied
Twinning kit
Twinning kit
Straight
pipe of
that
500 mm
The length
theisstraight
pipe must
[19-11/16 in] or more
be 500 mm (19 inch) or longer.
(3) Slope of twinning pipes
Make sure the slope of the twinning pipes are at an angle within ±15° to
the horizontal plane.
If the slope exceeds the specified angle, the unit may be damaged.
The length of the straight pipe must
be
500 mm
(19 that
inch)isor500
longer.
Straight
pipe
mm [19-11/
16 in] or more
Note: Refer to the figure below for the installation
Note: See
the of
following
drawing
position
the twinning
pipe.for the fitting position
of the twinning pipe.
Twinning
Reducerpipe
Use the pipes supplied in the twinning kit, and make sure the section of
the field-supplied pipe that connects to the twinning pipe has at least
500 mm [19-11/16 in] of straight section. (The section of the fieldsupplied pipe that connects to the twinning pipe must have at least 500
mm [19-11/16 in] of straight section.) If the straight section is less than
500 mm [19-11/16 in], it may result in equipment damage.
4. Insulation Cover Installation
Install the insulation cover on the twinning kit after brazing the pipes and twinning kit.
Insulate all refrigerant pipes. Insulate the liquid and gas pipes separately, and pipes located inside the unit as well as the outside.
Use heat-resistant insulation material (Heat resistant: at least 120 °C [248 °F], Thickness: liquid = 10 mm [13/32 in],
gas = 20 mm [13/16 in]). Position the edges of the insulation cover and heat-resistant insulation material so as not to leave a gap,
and then wrap the exterior perimeter of the pipe joints and middle with tape (field-supplied).
±15°
±15°
(4) The length of the straight pipe between indoor units and the twinning pipe
Field piping pipe
Field-supplied
The angle of tilt of the reducer should be within
Slope of the twinning pipes are at an angle within
±15° with the ground.
±15° to the horizontal plane
Insulation material (field supply)
Heat-resistant insulation material (field-supplied)
(5) Pipe connection
Field piping
Field-supplied
pipe
When connecting the twinning kit to the outdoor unit, note the following:
Make sure the pipes from the twinning pipe to the outdoor unit are sloped downwards (towards the twinning pipes).
· If the piping on the outdoor unit side (from the twinning pipe) exceeds 2 m [6 ft], ensure a trap (gas pipe only) within 2 m
[6 ft].
Make sure the height of the trap is 200 mm [7-7/8 in] or more.
If there is no trap, oil can accumulate inside the pipe, causing a shortage of oil and may damage the compressor.
<2 m [6 ft] or less>
100 mm
[4 in] or
more
To Indoor unit
Downward slope
Twinning pipe
m(6
[6ft)ft]
22 m
Upward slope
Twinning kit
Twinning
kit
Insulation
Insulationcover
cover
Insulation
cover
Insulation cover
200 mm
[7-7/8 in]
or more
)
Twinning pipe
*
Insulation
material
Heat-resistant
insulation
(field
supply)
material
(field-supplied)
To Indoor unit
Within
Less
than
Twinning pipe
2 m [6 ft]
Total pipe length = A+B<10 m [32 ft]
unit
3
Outdoor
unit
1 Outdoor
Outoor unit
1
Outoor unit
2 2 Outdoor
Outoor unitunit
3
· If the twinning pipe is installed above the base
of the outdoor unit, it should be no more than
200 mm [7-7/8 in].
Lapped
space
of tape
taping
Overlap
margin
of the
Tape
(field-supplied)
Tape
(field supply)
Twinning 1
Twinning 1
200 mm [7-7/8 in]
max
Twinning 2
As the insulation cover
contracts slightly, conduct
Insulation
covers
shrink. by
taping
in the
fieldcan
securely
Overlap the
tape as
shown
providing
lapped
parts
asin
the left figure so that there
shown
in the left, so that no gap
will be no gap in between the
will
exist on the insulation cover
insulation cover or fieldand
field insulation
supply insulation
installed
material.
material.
Heat-resistant
Insulation
material
insulation
(field
supply)material
(field-supplied)
Tape (field
(field-supplied)
Tape
supply)
Tape Tape
(field-supplied)
(field supply)
5. Miscellaneous Notes
Twinning 2
To Indoor
unit
To Indoor unit
Less than
200 mm
(7 inch)
Field-supplied
Field pipingpipe
<More than 2 m [6 ft] apart>
To Indoor unit
To Indoor unit
Field-supplied
Field pipingpipe
3
Secure the field-supplied pipes with a pipe cover and a cable tie in place to keep them from coming in contact with other pipes as
necessary.
4