Fujitsu AR*G45LHTA series Technical Manual page 24

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
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 a heater between the indoor unit and the ductwork.
Please be sure to use delay control of the fan.
Connected unit
Ex.) Relay unit
Signal
Field supply
CAUTION
!
- (01 - 21) -
OFF
Tr-Ts = -1°C
Tr-Ts = -10°C
OFF
Ex.) Heater
Relay
power
supply
1min
External
Heater
Supply air
Tr-Ts
Tr-Ts = -3°C
ON
Tr-Ts = -12°C
Indoorunit
Return air