Fujitsu AUU7RLF Design & Technical Manual page 84

• Circuit diagram example
Indoor unit
control PCB
12 V
On/Off
– Relay spec.: Rated DC 12 V, 50 mA to less.
– *: Make the distance from the PCB to the connected unit within 33 ft (10 m).
Heating
operation
Indoor unit fan
Output signal
CAUTION
• Locate an external heater between the indoor unit and the outlet.
• Be sure to use delay control of a fan.
• Optional part
Indoor unit type
Compact cassette
Slim duct
Wall mounted
Floor
11-2. External output
Example:
Connector
Relay unit
1
2
33 ft
(10 m)*
Signal
Operation
Stop
On
Off
On
Off
External
Heater
Supply air
External control set
Connected unit
Example: Heater
Locally purchased
Indoor unit
Return air
Part name
—
—
—
- 78 -
Relay
power
supply
1min
Model name
—
UTD-ECS5A
—
—
11. External input and output