Indoor Checking - Haier MRV II Instruction Manual

1.2 Indoor checking

1.2.1 Indoor unit pipe size checking
Model
Gas pipe (mm)
Liquid pipe(mm)
Remark: the above table does not include wall mounted indoor
1.2.2 Power signal wire confirmation: Indoor units of one system use
one power supply, The signal wire shielded layer of all indoor and
outdoor units should be connected together, and be grounded on
outdoor at single point.
1.2.3 Select control mode
control type
socket
/dip switch
CN23
CN30
CN21
SW08-[6]
signal terminal block
Note:
A. In the above figure, the state in the frame is set when out of
22~28
Φ9.52
Φ6.35
wired control
master unit
short connected
short connected
blank
ON
A,B,C to wired controller
- 92 -
36~56
Φ12.7
Φ6.35
wired control
slave unit
disconnected
short connected
blank
ON
B,C to wired controller
Part 3
71~140
Φ15.88
Φ9.52
remote control
disconnected
disconnected
to remote receiver
OFF
A,B,C not to wired controller