Honeywell PRO TH4110D - Manual (Page 8)

Installation Guide
6
• G Ga ass o orr O Oiill:: For gas or oil heating
systems, leave the fan operation
switch in this factory-set position
(This setting is for systems that
control the fan in a call for heat.)
• E Elle ec cttrriic c o orr H He ea att P Pu um mp p:: 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
G
terminal.)
Set fan operation switch
Fan operation settings