7
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Piping installation
Installer reference guide
38
2MXM-A9, 3MXM-A9, 4MXM-A9, 5MXM-A9
R32 Split series
4P600463-7G – 2022.09
A
Flare tool for R32
(clutch type)
Conventional flare tool
Clutch type
(Ridgid-type)
Wing nut type
(Imperial-type)
A
0~0.5 mm
1.0~1.5 mm
1.5~2.0 mm
5
Check that the flaring is properly made.
a
b
c
a
Flare’s inner surface MUST be flawless.
b
The pipe end MUST be evenly flared in a perfect circle.
c
Make sure the flare nut is fitted.
7.2.6 Connections between outdoor and indoor unit using reducers
INFORMATION
▪
For the DHW generator for Multi use the same reducer as for the 20 class indoor
unit.
▪
For the Hybrid for Multi, see the indoor unit installation manual for the capacity
class and applicable reducer.
Total indoor unit capacity class that can be connected to this outdoor unit:
1
2
3
4
5
6
Reducer type
Connection
1
Ø15.9 mm → Ø12.7 mm
2
Ø12.7 mm → Ø9.5 mm
3
Ø15.9 mm → Ø12.7 mm
4
Ø12.7 mm → Ø9.5 mm
5
Ø15.9 mm → Ø9.5 mm
6
Ø15.9 mm → Ø9.5 mm
Connection examples:
▪
Connecting a Ø12.7 mm pipe to a Ø15.9 mm gas pipe connection port
a
b
d
e
c
a
Outdoor unit connection port
b
Reducer no. 1
