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Hot Water Switch:
The unit’s hot water ON/OFF cannot be operated by any button on the
controller.
When hot water switch A1-A2 is bridged, the unit’s hot water function is
activated. An external signal like a timer or thermostat, etc could be
connected to A1-A2 to activate or deactivate the unit’s hot water function.
This external signal must be voltage free.
Case 1 : Install a manual switch inside the house to switch on/off hot water production
Case 2: Install a timer switch inside the house to switch on/off hot water production
automatically in due time.
Note
This is a potential free input contact only. DO NOT PUT 230VAC INTO THIS
CONTACT
Electrical Connection
A1 A2
