Fujitsu AUU9RLF Design & Technical Manual page 78

AUXILIARY HEATER OUTPUT
Compact Cassette
Connector
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 72°F(22°C)
▪ and Room Temperature(Tr) increase above
52°F(12°C), signal output is on.
▪ and Room Temperature(Tr) increase
above70°F(21°C), signal output is off.
▪ and Room Temperature(Tr) decrease below 66°F(19°C), signal output is on.
▪and Room Temperature(Tr) decrease below 48°F(10°C), signal output is off.
Jumper wire (Indoor Unit)
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
Indoor
control PC board
Ex.) Relay unit
12 V
Connector
1
on/off
2
*33ft.
(10m)
Signal
* Make the distance from the PC board to the connected unit within 33ft. (10m).
Operation
Heating
operation
Stop
ON
Indoor unit fan
OFF
ON
Output signal
OFF
Please locate a external heater between the indoor unit
and the outlet.
Please be sure to use delay control of a fan.
Parts (Optional)
Compact Cassette
Parts name
Model name
Slim Duct
- CN10
Tr-Ts = -2°F( -1°C)
Tr-Ts = -20°F( -10°C)
Connected unit
Ex.) Heater
Relay
power
supply
Relay spec.:
Rated 12V DC, 50mA to less.
Field supply
1min
CAUTION
Slim Duct
- External control set
- UTD-ECS5A
- (01 - 74) -
Comapct Wall
Wall Mounted
Mounted
-
Tr-Ts
OFF
Tr-Ts = -6°F( -3°C)
ON
Tr-Ts = -24°F( -12°C)
OFF
External
Indoor unit
Heater
Supply air
Comapct Wall
Wall Mounted
Mounted
-
-
-
Return air
-
-