Mitsubishi Electric PAC-IF021B-E Manual page 22

4
Switch setting (FTC2)
4.3. Heater setting
Set Dip SW 1-4 according to whether the system has an Immersion heater.
SW 1-4 Setting
OFF Without Immersion heater
ON With Immersion heater
Set Dip SW 1-5 according to the location of Booster heater.
SW 1-5 Setting
OFF For both Domestic Hot Water (DHW) and Heating
ON For Heating only or without Booster heater
< Summary: Heater setting >
SW 1-4
Immersion heater
OFF
(Without Immersion heater)
ON
(With Immersion heater)
OFF
(Without Immersion heater)
ON
(With Immersion heater)
4.4. Other setting
Set Dip SW 1-7 according to the Cooling mode usage.
SW 1-7 Setting
OFF Not in use (Operation mode: Heating/Heating ECO/Hot Water/Anti-freeze)
ON
In use (Operation mode: Heating/Heating ECO/Hot Water/Anti-freeze/Cooling)
When Dip SW 1-7 is OFF, Cooling mode is NOT available.
Dip SW 3-4: External input (Ana. IN1) logic change
Exteranl input (Ana. IN1) is for the connection of thermostat.
SW 3-4 Ana. IN1 (TB62 No.1, 2) input
OFF (open)
OFF
ON (short)
OFF (open)
ON
ON (short)
*1 In case of Cooling, Heating, Heating Eco, Anti-freeze.
Dip SW 3-6: External input (IN1) logic change
SW 3-6 IN1 (TB142 No.5, 6) input
OFF (open)
OFF
ON (short)
OFF (open)
ON
ON (short)
Dip SW 3-5, 3-8: Not in use. Set to OFF. (Initial setting)
C-22 C-22
SW 1-5
Booster heater position
OFF
(For both DHW and Heating)
OFF
(For both DHW and Heating)
ON
(For Heating only)
ON
(For Heating only)
Item
Normal operation
Heat pump unit OFF *1
Heat pump unit OFF *1
Normal operation
Item
Normal operation
Heat pump unit OFF
Heat pump unit OFF
Normal operation
Figure
Sanitary tank
TH5
TH1
Radiator
Booster heater
Sanitary tank
TH5
Immersion heater
TH1
Radiator
Booster heater
Sanitary tank
TH5
TH1 Radiator
Booster heater
Sanitary tank
TH5
Immersion heater
TH1 Radiator
Booster heater
Flow temp. controller