Toshiba HWS-804XWHM3 series - Hydro Unit Start-up and DIP Switch Configuration; Setting DIP Switches on the Hydro Unit Board

25
Start up and Configuration
Setting DIP Switches on the Board in the Hydro Unit
• Detach the front cover and the electric parts box cover of the
Hydro Unit.
• Set the DIP switches on the main board.
Switch
No.
Bit
No.
Description
Factory
Position
02
1
Determines the position of the auxiliary boiler in the system installation:
OFF = Boiler positioned after the 3 way valve
ON = Boiler installed before the 3 way valve
OFF
2
Not Used
-
3
Used when an external cylinder thermostat is connected:
OFF = external cylinder thermostat not connected
ON = external room thermostat connected
OFF
4
Used when an external room thermostat is connected:
OFF = external room thermostat not connected
ON = External room thermostat connected
OFF
10
1
Synchronises pump P1 with HP during hot water production:
OFF = Pump P1 synchronised with HP during hot water mode when electric cylinder heater is
energised
ON = Pump P1 continuous operation
OFF
2
Pump P1 control using TO control (heating mode only):
OFF = Pump P1 continuous operation
ON = Pump P1 OFF when TO > 20°C (temperature can be changed using FC9E)
OFF
3
Synchronises pump P2 with pump P1:
OFF = Pump P2 continuous operation (P2 OFF when remote controller switched OFF)
ON = Pump P2 synchronised with pump P1
OFF
4
Pump P1 ON/OFF cycling (during long periods of system OFF):
OFF = Pump P1 normal operation
ON = Pump P1 ON for 10 minutes duration (if system has been stopped for 72 hours)
OFF
11
1
Used to enable the hydro unit back up heaters:
OFF = Back up heater control enabled
ON = Back up heater control disabled
OFF
2
Used to enable the hot water cylinder electric heater:
OFF = Hot water cylinder heater control enabled
ON = Hot water cylinder heater control disabled
OFF
3
Used to enable the external booster heater output control:
OFF = External booster heater control enabled (TO must be ≤ -20°C)
ON = External booster heater control disabled
OFF
4
Not Used
-
12
1
Used to determine hot water cylinder connection to the system:
OFF = Hot water cylinder connected to the system
ON = Hot water cylinder not connected to the system
OFF
2
Used to enable Zone 1 operation:
OFF = Zone 1 control enabled
ON = Zone 1 control disabled
OFF
3
Used to enable Zone 2 operation:
OFF = Zone 2 control disabled
ON = Zone 2 control enabled
OFF
4
Not Used
-
13
1
Used to determine type of 3 way diverting valve connected to system:
OFF = 2 wire spring return or 3 wire SPST valve connected
ON = 3 wire SPDT valve connected
OFF
2
Used to enable the external boiler output control (used with FC23):
OFF = External boiler output control disabled
ON = External boiler output control enabled
OFF
3
Used to enable system auto restart after system power failure:
OFF = Auto restart control enabled
ON = Auto restart control disabled
OFF
4
Not Used
-