T87N Easy-To-See
TM
• Owner's Manual
69-1840EFS—03
4
Fan operation settings:
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.)
Align the slots on the base with tabs on the
thermostat, then push gently until the
thermostat snaps into place.
E
F
Fan operation settings
Cycle rate settings
Thermostat mounting
Thermostat
Coverplate
and subbase
Heating System
Switch 1 Switch 2
Steam or gravity (1 CPH)
On
On
High efficiency warm air
Off
On
(90%+), hot water, or
heat pump (3 CPH)
Gas or oil warm air
Off
Off
(factory setting) (5 CPH)
Electric warm air (9 CPH)
On
Off
Move the cycle rate switches
to the proper setting for your
system (see table below).
