Daikin 4MXM80A2V1B User Manual

7 | Piping installation
Installer reference guide
40
2MXM-A, 3MXM-A, 4MXM-A, 5MXM-A
R32 Split series
4P600463-5E – 2021.12
Connection examples:
▪ Connecting a Ø12.7mm pipe to a Ø15.9mm gas pipe connection port
a b d ec
a Outdoor unit connection port
b Reducer no. 1
c Reducer no. 3
d Flare nut for Ø15.9mm
e Inter-unit piping
▪ Connecting a Ø9.5mm pipe to a Ø15.9mm gas pipe connection port
a b d ec
a Outdoor unit connection port
b Reducer no. 6
c Reducer no. 5
d Flare nut for Ø9.5mm
e Inter-unit piping
▪ Connecting a Ø9.5mm pipe to a Ø12.7mm gas pipe connection port
a b d ec
a Outdoor unit connection port
b Reducer no. 2
c Reducer no. 4
d Flare nut for Ø12.7mm
e Inter-unit piping
Coat the threaded connection port of the outdoor unit where the flare nut comes
in with refrigeration oil.
Flare nut for (mm) Tightening torque (N•m)
Ø9.5 33~39
Ø12.7 50~60
Ø15.9 62~75
NOTICE
Use an appropriate wrench to avoid damaging the connection thread by
overtightening the flare nut. Be careful NOT to overtighten the nut, or the smaller
pipe may be damaged (about 2/3-1× the normal torque).
7.2.7 Using the stop valve and service port
CAUTION
Do NOT open the valves before flaring is complete. This would cause refrigerant gas
leakage.
To handle the stop valve
Take the following guidelines into account:

Daikin 4MXM80A2V1B Specifications

General

Brand	Daikin
Model	4MXM80A2V1B
Category	Air Conditioner
Language	English