4
. Multiple outdoor units control
. Dip switch functions
<Outdoor unit>
• Set refrigerant address on each outdoor unit from 1 to 6.
Note: Do NOT use refrigerant address 0 as 0 is used for FTC4 (Master). The address range is from 1 to .
Split model (SW1-3 to SW1-)
Dip switch
Refrigerant address number
Add. 1
Add. 2
Add. 3
Add. 4
Add. 5
Add.
SW1-1
—
—
—
—
—
—
SW1-2
—
—
—
—
—
—
SW1-3
ON
OFF
ON
OFF
ON
OFF
SW1-4
OFF
ON
ON
OFF
OFF
ON
SW1-5
OFF
OFF
OFF
ON
ON
ON
SW1-6
OFF
OFF
OFF
OFF
OFF
OFF
Packaged model (SW-3 to SW-)
Dip switch
Refrigerant address number
Add. 1
Add. 2
Add. 3
Add. 4
Add. 5
Add.
SW7-1
—
—
—
—
—
—
SW7-2
—
—
—
—
—
—
SW7-3
ON
OFF
ON
OFF
ON
OFF
SW7-4
OFF
ON
ON
OFF
OFF
ON
SW7-5
OFF
OFF
OFF
ON
ON
ON
SW7-6
OFF
OFF
OFF
OFF
OFF
OFF
<FTC4: Master>
• Set Dip SW4-1 and SW4-2 to ON.
• For more details refer to “5. Dip Switch setting.”
<FTC4: Slave>
• Set Dip SW4-1 to ON "Active :multiple outdoor unit control".
• Set Dip SW1-7 (Outdoor unit type) on each slave unit according to each connected outdoor unit type.
• Set only Dip-SW1-3 to ON on the slave unit that runs DHW operation.
Dip switch
Function
OFF
ON
Master
Slave
(PAC-SIF051B-E)
Slave *1
(Hydrobox)
SW1 SW1-1 Bolier
WITHOUT Bolier
WITH Bolier
—
—
SW1-2
Heat pump maximum outlet water
temperature
55˚C
60˚C
SW1-3 DHW tank
WITHOUT DHW tank
WITH DHW tank
SW1-4 Immersion heater
WITHOUT Immersion heater
WITH Immersion heater
—
—
SW1-5 Booster heater
WITHOUT Booster heater
WITH Booster heater
—
—
SW1-6 Booster heater function
For heating only
For heating and DHW
—
—
—
SW1-7 Outdoor unit type
Split type
Packaged type
—
SW1-8
Wireless remote controller
WITHOUT Wireless remote
controller
WITH Wireless remote controller
—
—
SW2
SW2-1
Room thermostat1 input (IN1) logic
change
Zone1 operation stop at short
Zone1 operation stop at open
—
—
SW2-2 Flow switch1 input (IN2) logic change
Failure detection at short
Failure detection at open
SW2-3 Booster heater capacity restriction
Inactive
Active
—
—
SW2-4 Cooling mode function
Inactive
Active
—
—
SW2-5
"Automatic switch to backup heater only
operation (When outdoor unit stops by error)"
Inactive
Active
—
—
SW2-6 Mixing tank
WITHOUT Mixing tank
WITH Mixing tank
*2
—
—
SW2-7 2-zone temperature control
Inactive
Active
—
—
SW2-8
—
—
—
—
—
—
SW3
SW3-1
Room thermostat2 input (IN6) logic
change
Zone2 operation stop at short
Zone2 operation stop at open
—
SW3-2 Flow switch2 input (IN3) logic change
Failure detection at short
Abnormality detection at open
—
SW3-3 Flow switch3 input (IN7) logic change
Failure detection at short
Abnormality detection at open
—
SW3-4 Cooling operation in zone2
NOT in use
In use
—
SW3-5 Heating mode function
Inactive
Active
—
SW3-6
—
—
—
—
—
SW3-7
—
—
—
—
—
SW3-8
—
—
—
—
—
SW4 SW4-1 Multiple unit control
Inactive
Active
ON
ON
ON
SW4-2
Position of multiple outdoor units control Slave
Master
ON
OFF
OFF
SW4-3
—
—
—
—
—
—
SW4-4
—
—
—
—
—
—
SW4-5
Emergency mode (Heater only
operation)
Normal
"Emergency mode (Heater only
operation) (To be activated only
when powered ON)"
—
—
SW4-6
Emergency mode (Bolier operation)
Normal
"Emergency mode (Bolier
operation) (To be activated only
when powered ON)"
—
—
: Setting is required
— : NO setting (function is not available)
*1 When FTC4 (Master) in Hydrobox is set as Slave.
*2 Set Dip SW2-6 to ON in "System 3 (2 zone)" and in "System 4 (with Boiler)" mentioned in "9.2 Pipe work."