RTH4300B Programmable Thermostat
15
About your new thermostatSet fan operation switch
Move the switch to the proper setting:
F: For gas or oil heating systems, leave
the fan operation switch in this factory-set
position (for systems that control the fan in
a call for heat).
E: Change the switch to this setting for heat
pump or electric heat systems. (This setting
is for systems that allow the thermostat to
control the fan in a call for heat, if a fan wire
is connected to the G terminal.)
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