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7 | Piping installation

Installer reference guide

2(A)MXM40+50 + 2(A)MXF40+50

R32 Split series

4P600463-3D – 2021.03

Port Class Reducer

A 20, 25, 35 —

B 20, 25, 35 1+2

(a)

Use optional accessory.

Reducer type Connection

1 Ø12.7mm → Ø9.5mm

2 Ø12.7mm → Ø9.5mm

Connection example:

▪ 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 type 1

c Reducer type 2

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.

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

To handle the stop valve

Take the following guidelines into account:

▪ The stop valves are factory closed.

▪ The following figure shows the stop valve parts required when handling the

valve.

a Service port and service port cap

b Valve stem

c Field piping connection

Daikin 2MXM50N2V1B9 User Manual

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