¢ Auxiliary heater output (External output 4)
When indoor unit fan and compressor is turned on in heating operation, the signal is output from
connector.
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
off.
• And Tr decrease below 19 °C, signal output is
on.
• And Tr decrease below 10 °C, signal output is
off.
OFF
OFF
ON
Tr-Ts = -1 °C
Tr-Ts
Tr-Ts = -3 °C
Tr-Ts = -10 °C
Tr-Ts = -12 °C
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”.
On
Off
Operation
Stop
Heating
operation
Indoor unit fan
12 V
0 V
CNB01 (1-5)
output
1 min
CAUTION
• Install an auxiliary heater between the indoor unit and the outlet.
External
heater
Supply air Return air
Indoor
unit
• 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-
lation.
3-2. External output
- (08-24) - 3. Indoor unit
EXTERNAL INPUT
AND OUTPUT
EXTERNAL INPUT
AND OUTPUT
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