17
Installation
a
CAUTION DANGER
– DO NOT SWITCH LIVE AND NEUTRAL
CABLES. Such a configuration is dangerous and
may cause the air conditioner to malfunction.
– The refrigerant circuit can get very hot. Keep
the interconnection cable away from the
copper pipe.
8
Secure the cables with the corresponding cable ties.
The cable must not be slack and must not pull the
U-shaped wire terminal.
9 Refit the electrical panel cover and the front panel on
the indoor unit.
27M - 35M models
W
S
1(L) 2(N)
INDOOR unit terminal block
power supplysignal
from the OUTDOOR unit
terminal block
Fig. 16
53M models
S
1(L) 2(N)
3
1 2
INDOOR unit terminal block
power supply signal
from the OUTDOOR unit
terminal block
Fig. 17
REMOTE ON-OFF
For the input of the remote control terminal CN23
(ON-OFF) and the JR6 quick-release connector
CN23
JR6
JR6
ON - OFF
Remote
Control
Fig. 18
– Remove the JR6 quick-release connector when
using the ON-OFF function;
– When the remote switch is OFF (OPEN), the unit
will be turned off;
– When the remote switch is ON (CLOSE), the unit
will be turned on;
– When the remote switch is opened/closed, the unit
will respond to the request within 2 seconds;
– When the remote switch is ON, the remote/wired
control can be used to select the mode; when the
remote switch is OFF, the unit will not respond to
the remote/wired control request.
When the remote switch is OFF, the remote/wired
control is on, code CP will be shown on the display
board.
– The input voltage is 12 V DC, the maximum design
current is 5 mA.
ALARM
For the input of ALARM connector CN33
NEW FAN
CN8
M
CN23
JR6
JR6
ON - OFF
Remote
Control
CN33
ALARM
Alarm
Output
Fig. 19
– The terminal input is set up for ALARM connection,
but there is no voltage; the power supply comes
from the ALARM system (not from the unit)
– Although the design voltage can withstand even
higher values, we strongly advise connecting a
power supply of less than 24 V and a current of
less than 0.5 A
– If this problem occurs on the unit, the relay will be
closed, thus activating the ALARM
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