Fujitsu ARTG54LHTC Design & Technical Manual page 29

AUXILIARY HEATER OUTPUT
„ „
Corresponding indoor units: slim duct type, duct type, high static pressure duct type
A signal is outputed from Connector when indoor fan and compressor turn 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
Connected unit
Ex.) Relay unit
Signal
Field supply
- (01 - 26) -
OFF
Tr-Ts = -1°C
Tr-Ts = -10°C
OFF
Ex.) Heater
Relay
power
supply
1min
Tr-Ts
Tr-Ts = -3°C
ON
Tr-Ts = -12°C