T87 battery question the battery is used when the stat is first powered and when there is a call for heat that last for over 4 hours.

Honeywell ct87n battery. Pull wires through wire hole. This thermostat contains a lithium battery which may contain perchlorate material. Perchlorate material—special handling may apply, see www.dtsc.ca.gov.

If your thermostat is of this type and needs a new battery, the video should give you. Thermostats such as the honeywell t87n1000 tradeline thermostat do not require batteries. Ct87n manufactured by honeywell representative photo click to zoom weight:

Drill holes (3/16” for drywall, 7/32” for plaster) and tap in. Position coverplate on wall, level and mark hole positions. Then sort of goes to sleep.

Ct87k (24 vac heating systems) • ct87n (24 vac heating and cooling systems) this thermostat contains a lithium battery which may contain perchlorate material. It should last over 10 years and is. This thermostat contains a lithium battery which may contain perchlorate material.

Wiring honeywell's ct87n thermostat step 1: Ct87n wiring ct87n [1] if wires will be connected to both r and rc terminals, remove the metal jumper. Perchlorate material—special handling may apply, see www.dtsc.ca.gov/hazardouswaste/perchlorate.

This system has a control unit without a screen or even any buttons. The round® thermostat provides electronic control of 24vac heating and cooling systems with the classic mechanical interface. Turn off the power turn off the circuit breakers or remove the fuses that control electrical power to your furnace and your air.