Twinning pipe(high pressure)
c
e
d
a
b
To BC controller
To BC controller
Twinning kit(low pressure)
Heat source unit 1
Heat source unit 2
1780
20
880
880
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
Model
CMY-Q100VBK
Model
CMY-Q100VBK
1
1
1
1
1
1
1
1
1
1
1
2
1
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
1
D
ID22.2 [7/8]
-ID25.4 [1]
B
Insulation cover
A
Installation Manual
(this booklet)
0
OD22.2 [7/8]
-ID25.4 [1]
9
OD22.2 [7/8]
-ID19.05 [3/4]
8
OD19.05 [3/4]
-ID15.88 [5/8]
C
Cable tie
(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
CMY-Q100VBK
PQRY-P600YSHM-A
PQRY-P300YHM-A
PQRY-P300YHM-A
PQRY-P250YHM-A
PQRY-P250YHM-A
PQRY-P500YSHM-A
Low pressure
Twinning pipe connection size
Heat Source unit 1
Component unit name
Package unit name
BC controller~Twinning pipe
a
b
PQRY-P400YSHM-A
PQRY-P200YHM-A
PQRY-P200YHM-A
High pressure
Low pressure
c
d
High pressure
e
High pressure
Twinning pipe Kit(optional parts)
Twinning pipe~Heat Source unit 1
Twinning pipe~Heat Source unit 2
Twinning pipe~Heat Source unit 2
Heat Source unit 2
PQRY-P450YSHM-A
PQRY-P250YHM-A
PQRY-P200YHM-A
PQRY-P550YSHM-A
PQRY-P300YHM-A
PQRY-P250YHM-A
Ø28.58
(
*
)
Ø22.2
Ø28.58
Ø19.05
Ø22.2
Ø19.05
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.)
❈
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
See reverse.
