Fujitsu AR*G12LLTB Design & Technical Manual page 39

AUXILIARY HEATER OUTPUT
„ „
A signal is outputed from Connector when indoor fan and compressor is turned on under heating
operation.
* Signal output performance specifications are as
shown on the right
Ex. When Set Temperature(Ts) is 22°C;
▪ and Room Temperature(Tr) increase above 12°C,
signal output is on.
▪ and Room Temperature(Tr) increase above 21°C,
signal output is off.
▪ and Room Temperature(Tr) decrease below 19°C, signal output is on.
▪and Room Temperature(Tr) decrease below 10°C, signal output is off.
Jumper wire (Indoor Unit)
z „
This is used to continue indoor unit fan operation for 1 minute after thermo OFF in heating mode.
1 minute delay control set by cutting jumper wire on PCB.
Circuit diagram example
z „
Indoor unit
control PC board
12 V
Connector
1
on/off
2
*10 m
* Make the distance from the PC board to the connected unit within 10m.
Relay spec. : Rated 12VDC, 50mA or less.
Operation
Heating
operation
Stop
ON
Indoor unit fan
OFF
ON
Output signal
OFF
Please place an external heater between the indoor unit
and the outlet.
Please be sure to use delay control of the fan.
Parts (Optional)
z „
Model name
UTD-ECS5A
Wire (Heater output)
Connected unit
Ex.) Relay unit
Signal
Field supply
CAUTION
!
- (01 - 36) -
OFF
Tr-Ts = -1°C
ON
Tr-Ts = -10°C
OFF
Ex.) Heater
Relay
power
supply
1min
External
Heater
Supply air
Tr-Ts
Tr-Ts = -3°C
Tr-Ts = -12°C
Indoor unit
Return air