CT87N Easy-To-See
TM
• Owner's Manual
69-1919EFS—04
4
1. Align the slots on the base with tabs on the
thermostat, then push gently until the
thermostat snaps into place.
2. Restore electrical power at the heating/cooling
system, or at the fuse/circuit-breaker panel.
Move the switch to the proper setting for
your system:
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.)
E
F
Fan operation settings
Cycle rate settings
Thermostat mounting
Coverplate
and subbase
Heating System
Switch 1
Switch 2
Steam or gravity
On
On
High efficiency warm air
Off
On
(90% plus efficiency),
hot water, or heat pump
Gas or oil warm air
Off
Off
(factory setting)
Electric warm air
On
Off
Move the cycle rate switches
to the proper setting for your
system (see table below).
Thermostat