Installation configuration of individual connection
External heating device is installed individually. (No use of indoor unit fan)
Example of heating device:
- Floor heating device
On/Off
WARNING
• DIP Switch 101-3 must be in the ON position when ducted electric heat application is be-
ing used. DIP switch 101-3 is set in the ON position by default from the factory. When DIP
switch 101-3 is in the ON position and ducted electric heat application is not being used, cold
draft occurs due to fan delay off operation.
Operation Condition
Heater off
DIP-SW101-3 On • Heater is off as shown in following diagram of heating
temperature.
• Other than heating mode
• Error occurred
• Forced thermostat off
• Fan stop protection
Indoor unit fan
setting for
external heater
Enabled
DIP-SW101-3 Off • Heater is off as shown in following diagram of heating
temperature.
• Other than heating mode
• Error occurred
• Forced thermostat off
Indoor unit fan
setting for
external heater
Disabled
• Design and install external heater appropriately with considering its protection.
External
heater
Indoor
unit
Supply air Return air
• Inappropriate designing and installation of external heater may cause a fire by emitted heat from
the external heater.
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7-4. Details of function 7. External input and output
DUCT TYPE
RHMV2421-4821*NACJ
A
DUCT TYPE
RHMV2421-4821*NACJ
A
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