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1. Confirming the Package Contents
The following items are included with the Twinning Kit (CMY-Q100VBK). Verify that all items are present before starting installation.
❈ Always use the twinning pipes included in the kit when preparing the twinning kit.
If the field-supplied pipes do not fit the parts in the kit, use the accessory piping parts listed below.
(1) Package contents
1Low-pressure
2High-pressure
Model
twinning kit
twinning pipe
CMY-Q100VBK
1
8OD19.05 [3/4]
9OD22.2 [7/8]
Model
-ID15.88 [5/8]
-ID19.05 [3/4]
CMY-Q100VBK
1
(2) List of field-supplied parts
· Refrigerant pipes other than the ones provided in the kit
· Heat-resistant insulation material (for field-supplied refrigerant pipes)
· Insulation cover tape
2. Selecting the Correct Size Refrigerant Pipes and Using the Twinning Kit
(1) Pipe size
1 Field-supply the pipes to be connected to the kit.
2 If the pipe was cut with a pipe cutter, remove the
burrs and eliminate foreign materials before
connecting.
❈ On the low-pressure side, the twinning kit connects to
the field-supplied pipes inside the heat source unit.
The distributor on the low-pressure side must be
placed in the heat source unit that has a larger
capacity index of the two, regardless of the relative
positions of the heat source units or their addresses.
If the distributor is placed in the heat source unit that
has a smaller capacity, refrigerant will not be properly
distributed and compressor failure may result.
( If heat source units that have the same capacity are
used in combination, the distributor can be placed in
either heat source unit.)
Twinning pipe connection size
Package unit name
Heat Source unit 1
Component unit name
Heat Source unit 2
Twinning pipe Kit(optional parts)
High pressure
BC controller~Twinning pipe
Low pressure
Twinning pipe~Heat Source unit 1
High pressure
Twinning pipe~Heat Source unit 2
Low pressure
Twinning pipe~Heat Source unit 2
High pressure
❈ Choose the correct size pipe using the above table. Connect the field- supplied pipe to the twinning kit for the sizes in the
table that are marked with an asterisk (*).
3Fixing screw 4Elbow pipe
Ø22.2 [7/8]
1
1
1
0OD22.2 [7/8]
AInstallation Manual
-ID25.4 [1]
(this booklet)
1
1
1
PQRY-P400YSHM-A
PQRY-P450YSHM-A
PQRY-P200YHM-A
PQRY-P250YHM-A
PQRY-P200YHM-A
PQRY-P200YHM-A
a
b
c
d
e
5Elbow pipe
6High-pressure
7Pipe cover
Ø28.58 [1-1/8]
pipe
1
1
DID22.2 [7/8]
BInsulation cover
CCable tie
-ID25.4 [1]
1
2
880
Heat source unit 1
Twinning kit(low pressure)
PQRY-P500YSHM-A
PQRY-P250YHM-A
PQRY-P250YHM-A
CMY-Q100VBK
Ø22.2
Ø28.58
Ø19.05
Ø22.2
Ø19.05
2
1
1
1780
20
880
Heat source unit 2
e
c
d
Twinning pipe(high pressure)
PQRY-P550YSHM-A
PQRY-P600YSHM-A
PQRY-P300YHM-A
PQRY-P300YHM-A
PQRY-P250YHM-A
PQRY-P300YHM-A
(
)
Ø28.58
*
a
To BC controller
b
To BC controller
See reverse.
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