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•
Wiring for 1H and 1C thermostat
W
Y
G
C
R
THERMOSTAT
DH
R
C
L
G
INDOOR UNIT
NOTE:
•
When the indoor and outdoor unit is connected
without communication (Connection method
C), indoor sensor fault and fan fault, the indoor
unit plate outputs L signal to the temperature
controller, and the temperature controller
shall send out stop command to the outdoor
unit . If the temperature controller provided
by the customer is not equipped with the
output stop instruction of the outdoor unit ,
the outdoor units are not allowed to run in
the non-communication mode. Please use
•
connection method B.
When only connection method C is used, the
L fault signal can be used to control the 24V
normally closed contact AC contactor to
disconnect the indoor and outdoor unit
control signals, as shown in the gure:
INDOOR OR
OUTDOOR UNIT
C
Opt ional f unct ion w iring:
Page 42
42
C
Y1 Y2
Y1
B W
W1 W2
E
R
B W D
OUTDOOR UNIT
Y
THERMOSTAT
B
L
Alarm
interface
Liquid level
switch
interface
UVLED
Indoor and
outdoorunit
communication
interface
•
Liquid level switch interface
The unit has a liquid level detection interface.
If you choose this function, you need to purchase
a liquid level switch by yourself, connect to the
CN5 interface, and remove J1. When the water
receiving pan is full, the water level switch is
L
disconnected, the water level switch is reported,
and the whole machine stops.
WATER LEVEL SWITCH
•
The fault warning
ALARM
When there is a fault in the relay to close,
otherwise the relay disconnected. This port is a
passive outlet, you need to input a voltage
signal.
•
Humidi cation control wiring
HUMIDISTAT
WORK
24V control signal or 208/230V power supply
HUMIDISTAT
G
24-VAC
C
Passive signal port CN33, when the fan is running,
the relay is closed, it needs to be connected with
24V control signal or 208/230V power supply,
then CN33 and serial humidistat and humidi er;
Active 24V signal, connect the G and C ports of the
control panel in series with the humidistat and
then connect the humidi er. If the thermostat or
zone controller has a HUM interface, connect the
humidi er directly to the HUM and C ports.
When the humidity drops below the set value of
the humidistat, the humidistat is turned on, and
the humidi er receives a signal or power source
and starts humidifying operation.
TO
HUMIDIFIER
TO HUMIDIFIER
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