Part 3
1.2 Indoor checking
1.2.1 Indoor unit pipe size checking
Model 22~28 36~56 71~140
Gas pipe (mm) Φ9.52 Φ12.7 Φ15.88
Liquid pipe(mm) Φ6.35 Φ6.35 Φ9.52
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
CN23
CN21
A,B,C to wired controller
signal terminal block
OFF
ON
CN30
SW08-[6]
ON
control type
socket
/dip switch
wired control
master unit
wired control
slave unit
remote control
short connected
short connected
short connected
disconnected
disconnected
disconnected
blank blank
to remote receiver
B,C to wired controller
A,B,C not to wired controller
Note:
A. In the above figure, the state in the frame is set when out of
- 92 -
To Next Page
Loading...
