Fan Operation Settings; Thermostat Mounting - Honeywell t87n the round Owner's Manual

T87N

Fan operation settings

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.)
Cycle rate settings

Thermostat mounting

Thermostat
Base
Heating System
Steam or gravity (1 CPH)
High efficiency warm air
(90%+), hot water, or
heat pump (3 CPH)
Gas or oil warm air
(factory setting) (5 CPH)
Electric warm air (9 CPH)
Align the slots on the base with tabs on the
thermostat, then push gently until the
thermostat snaps into place.

Switch 1 Switch 2
On On
Off On
Off Off
On Off