Fujitsu Airstage J-IVS AJ 040LCLDH Series Design & Technical Manual page 942

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¢ Auxiliary heater output (External output 4)

When indoor unit fan and compressor is turned on in heating operation, the signal is output from

NOTE: Corresponding indoor units: All duct type

Specifications of the signal output performance are as shown as follows:

Example: When set temperature (Ts) is set at 22 °C;

And room temperature (Tr) increase above

12 °C, signal output is on.

And Tr increase above 21 °C, signal output is

And Tr decrease below 19 °C, signal output is

And Tr decrease below 10 °C, signal output is

The output also turns off on defrost operation and oil recovery operation.

• Fan delay switch (Indoor unit)

This is used to continue the indoor unit fan operation for 1 minute after thermo off in heating mode.

1 minute delay control setting by DIP switch (2-3) on the PCB is "On".

Indoor unit fan

• Install an auxiliary heater between the indoor unit and the outlet.

• Be sure to use delay control of the fan.

• To avoid a fire caused by self heat of the auxiliary, design and install the auxiliary properly with

considering protection by auxiliary itself.

Our company is not responsible for the system designed including auxiliary with improper instal-

3-2. External output

Tr-Ts = -1 °C

Tr-Ts = -10 °C

Tr-Ts = -3 °C

Tr-Ts = -12 °C

3. Indoor unit

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