Honeywell CT87N Owner's Manual - Page 4

CT87N Easy-To-SeeTM • Owner's Manual Fan operation settings Move the switch to the proper setting for your system: F: For gas or oil heating systems, leave the fan operation switch in this factoryset 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 E F Move the cycle rate switches to the proper setting for your system (see table below). Thermostat mounting Coverplate and subbase Heating System Switch 1 Steam or gravity On High efficiency warm air Off (90% plus efficiency), hot water, or heat pump Gas or oil warm air Off (factory setting) Electric warm air On Switch 2 On On Off Off 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. Thermostat 69-1919EFS-04 4