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