18
Electrical Connections
The unit has two ways to turn ON/OFF heating
functions.
SF14: A/C On/Off way 1.) remote 2.) keyboard
A/C Switch:
If SF14 set = “remote”. Keyboard can not be used to
turn On/Off the heating and no heating timezone On/
Off function.
B1-B2 switch is activated to turn On/Off the unit.
When the A/C switch B1-B2 is bridged, the unit’s
heating function is activated. An external signal like a
timer or thermostat, etc could be connected to B1-B2 to
activate or deactivate the unit’s heating function. This
external signal must be voltage free.
Note
This is a potential free input contact only. DO NOT PUT 230VAC INTO THIS CONTACT
Case 2: Install a timer switch inside the house to switch
on/off heating automatically
Case 1 : Install a manual switch inside the house to
switch on/off heating.
Case 3: SF14 set to “keyboard” (factory default setting).
Then the A/C switch could not control the unit
any more, wired remote control will take over
control the unit .
