Honeywell T87f Thermostat Wiring Diagram

At left the thermostat wiring diagram illustrates use of a honeywell t87f thermostat in a 2 wire application controlling a gas fired heating appliance.

Honeywell t87f thermostat wiring diagram. All wiring must comply with local electrical codes and ordinances. T87f thermostats important when the t87f is used in a series 20 heating circuit requires contact on both a rise and fall in temperature set the anticipator indicator to 1 2. Click to enlarge any image for a table of wiring connections for this thermostat also see. Seems that the honeywell rthb thermostat is very popular with the do it yourself crowd judging by the many questions about how to connect this thermostat.

T87f replacing a series 10 thermostat connected to a 3 wire open contact high limit control. If the current rating is not known proceed as. The t87f is adaptable to most 2 wire 24 to 30 volt heating systems and to most 3 wire 24 to 30 volt heating systems controlled by a series 10 thermostat. The t87f is used with the 137421n or p wallplate provided or q539a or b subbase ordered separately depending on application.

Above the thermostat wiring diagram illustrates use of a honeywell t87f thermostat in a 2 wire application controlling an oil fired heating appliance. Mounting thermostat to wallplate. See table 1 for the t87f thermostat provides 24 vac single stage thermostat wallplate and subbase applications and temperature control of honeywell zone control panels. The t87f is adaptable to most 2 wire 24 to 30 volt heating systems and to most 3 wire 24 to 30 volt heating systems controlled by a series 10 thermostat.

Page 1 thermostat and q539a b subbases installation instructions application thermostats.