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1. Confirming the Package Contents
The following items are included with the Twinning Kit (CMY-Q100CBK). 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
1 Low-pressure
Model
twinning kit
CMY-Q100CBK
1
8 OD19.05 [3/4]
Model
-ID15.88 [5/8]
CMY-Q100CBK
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
Component unit name
Twinning pipe Kit (optional parts)
BC controller~Twinning pipe
Twinning pipe~Heat Source unit 1
Twinning pipe~Heat Source unit 2
Twinning pipe~Heat Source unit 2
* 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 (*).
2 High-pressure
4 Elbow pipe
3 Fixing screw
twinning pipe
1
1
a Installation
9 OD22.2 [7/8]
0 OD22.2 [7/8]
-ID19.05 [3/4]
-ID25.4 [1]
1
1
PQRY-P144
Heat Source unit 1
PQRY-P72
Heat Source unit 2
PQRY-P72
High pressure
a
Low pressure
b
High pressure
c
ø15.88
Low pressure
d
High pressure
e
5 Elbow pipe
6 High-pressure
ø22.2 [7/8]
ø28.58 [1-1/8]
1
1
b Insulation
Manual
c Cable tie
cover
(this booklet)
1
1
880
Heat source unit 1
Twinning kit (low pressure)
PQRY-P168
PQRY-P96
PQRY-P72
ø22.2
ø19.05
ø15.88
2
7 Pipe cover
pipe
1
1
d ID22.2 [7/8]
e Water stopper
-ID25.4 [1]
2
1
1
1780
20
880
Heat source unit 2
e
c
d
PQRY-P192
PQRY-P216
PQRY-P96
PQRY-P120
PQRY-P96
PQRY-P96
CMY-Q100CBK
ø28.58
ø19.05
ø22.2
ø19.05
f Sealing
material
1
a
To BC controller
Twinning pipe (high pressure)
b
To BC controller
PQRY-P240
PQRY-P120
PQRY-P120
ø28.58
(*)
See reverse.
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