This kit is intended for use with any Parker2-stage thermostat and allows the thermostat to override the furnace’s internal thermostat algorithm. In addition,this kit may also be used in conjunction with other24-v2-stage thermostats which primarily operate in the low-fire mode at the start of...
An electronic two stage furnace controller may be used interchangeably, without modification thereof, with either a single or two stage thermostat to regulate the heating and cooling operation of a two stage heating/cooling furnace to which the controller is connected. The controller is operative to...
A two-stage thermostat means for an add-on heat pump installation provides separated control of a furnace and a heat pump. The two-stage thermostat means utilizes a single pole, single throw switch means, and a single pole, double throw switch means to properly stage and control a heat ...
Low voltage thermostats can be used with electric furnaces, single state heat pumps, and multi-stage heating and cooling heat pumps. In some cases, the installation can be more extensive since up to nine wires may be used, which can create up to 20% in increased costs for the installation...
A space thermostat for controlling the two-stage operation of both heating and cooling apparatus includes two single-pole, double-throw mercury type switches operatively connected to a single bimetallic coil. One switch energizes stage one of the heating apparatus when tilted in one direction and en...
Check the circuit breaker for the system and reset it if it has tripped. If the thermostat has batteries, replace them. If the screen is still blank, look for problems in the HVAC system. For example, if there's an open door on the furnace or air handler, a safety switch will prevent...
Check the circuit breaker for the system and reset it if it has tripped. If the thermostat has batteries, replace them. If the screen is still blank, look for problems in the HVAC system. For example, if there's an open door on the furnace or air handler, a safety switch will prevent...
not have enough functionality to take advantage of all your air system's features. For example, if your furnace hastwo-stage heatingand your thermostat doesn't have a W2 terminal for the wire to control second-stage heat, you'll never be able to take advantage of this energy-saving ...
Soooooo glad to get the correct part for my ancient floor furnace. Everyone , box store Pros swore the 24V to millivolt would work. I researched what I needed on the Honeywell site, had it shipped to my home, installed it and we have a happy Warm house again. Thanks Honeywell !
Most residential systems have a separate breaker for disconnecting power to the furnace. Remove the cover of the old thermostat.If it does not come off easily check for screws. Loosen the screws holding the thermostat base or subbase to the wall, and lift away.Disconnect the wires from the ...