Dual Fuel, 2H/1C: Heat Pump Compatible model: TH1210U4001 & TH1320U4002 only 1: COMMON OPTIONAL. 2: L ONLY CONNECTED IF HEAT PUMP HAS A FAULT TERMINAL. 3: SOME HEAT PUMPS USE B RATHER THAN O FOR REVERSING VALVE. 4: THE HEAT PUMP AND FURNACE HAVE SEPARATE BOARDS. THEY ARE SHOWN TOGETHER HERE TO SIMPLIFY THIS DIAGRAM. W IS FROM THE FURNACE BOARD. 5: WIRE C7089U1006 TO THE TWO S TERMINALS. 6.. Thermostat wiring details & connections for nearly all types of Honeywell room thermostats used to control residential heating or air conditioning systems. This article gives a table showing the proper wire connections for Honeywell brand wall or room thermostats used to control heating or air conditioning equipment. Room thermostat installation & wiring guide: this article series explains the.
Learn how to wire a Honeywell 2-wire thermostat for heat-only systems with this clear and concise wiring diagram. Perfect for quick installation and troubleshooting.. Honeywell thermostats are among the most popular on the market, and wiring one up to work with a heating device is a straightforward process. In this article, we'll explain the basics of wiring up a Honeywell thermostat heat only system, so that you can efficiently control the temperature in your home.