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Quick Reference Guide - Page 19
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 mode
SW10 Description
Default setting Alternate
1
Internal pump P1 operating
mode
Continuous operation OFF ON HP synchronized
3 External P2 pump operation Continuous operation OFF ON
Interlocked with the
internal pump
synchronized with P1.
Switch mode
SW11 Description
Default setting Alternate
1
Internal backup heater
operation
Operate
OFF ON Not operate
2
Hot water cylinder heater
operation
Operate
OFF ON Not operate
3 Booster heater operation Operate
OFF ON Not operate
Switch mode
SW12 Description
Default setting Alternate
1 Hot water supply operation Valid
OFF ON Invalid
2 Zone 1 operation Valid
OFF ON Invalid
3 Zone 2 operation Invalid
OFF ON Valid
Switch mode
SW13 Description
Default setting Alternate
1 Type of motorized 3-way valve
• 2-wire spring return type
• 3-wire SPST type
OFF ON 3-wire SPDT type
2 Interlocking with boiler Invalid
OFF ON Valid
3 Auto restart for power failure Auto restart
OFF ON Manual restart
Switch mode
SW02 Description
Default setting Alternate
4 Room thermostat Invalid
OFF ON Valid