Weathertron 3AAT80B1A1

______________________________________________________________________ Ok I just went and bought a Honeywell RTH7400D Programable thermostat and I don’t know whether to use CONVENTIONAL or HEAT PUMP, my old Weathertron wiring is as follows…O-orange wire, G-green wire, Y-yellow wire, X2-Black wire, B-gray wire, W-white Continue reading

Another Fan Problem

______________________________________________________________________ Furnace – Lennox G12 Outside AC unit runs fine. Pilot and burners work fine. Last week when running AC the blower was cycling on and off about every minute right when the AC kicked on. Switching over to heat Continue reading

Honeywell Dehumidifier Control NOT WORKING

11:50 ______________________________________________________________________ model H46C 1166 seems not to be working. Need help with wireing Replies: Xenos “Re(1):Honeywell Dehumidifier Control NOT WORK” , posted Thu 13 Oct 19:39 ______________________________________________________________________ This may help. http://customer.honeywell.com/Techlit/Pdf/95-0000s/95-5367.pdf Xenos. The best way to escape a problem Continue reading

One Stage – Two Stage Heat Pump

______________________________________________________________________ I recently had a new Lennox HP26 heat pump installed along with a variable speed indoor unit (Lennox cmv31). My intentions were to get a set up that would run at a lower speed for longer periods of time Continue reading

Shutoff Valve

______________________________________________________________________ Which type of furnace has the shutoff valve located inside the appliance? Forced-air furnace plenums Central-gravity furnaces Wall furnaces Floor furnaces Thanks! Replies: mbk3 “Re(1):Shutoff Valve” , posted Sat 15 Oct 22:40 ______________________________________________________________________ Is this a test? Normally you Continue reading

Heat pump for a few minutes

14:08 ______________________________________________________________________ Just had 2 new Coleman 14 Seer variable speed ac/heat pumps w/ propane backups installed this spring. Have the honeywell touch screen thermostats (don’t have # here at work). Summer cooling season was fine, worked well. Got chilly Continue reading

Thermostat Wiring?

______________________________________________________________________ I am replacing an old mercury thermostat with a new Honeywell CT3500. I am trying to wire the new one and cant seem to get the heat to come on. The wiring consists of a blue, white and red Continue reading

What size pipe to feed a monoflo hydronic sys

00:08: ______________________________________________________________________ quote: ______________________________________________________________________ Never squat with your spurs on! … ______________________________________________________________________ House burnt, contractors tore out old monoflo sys …I saved the Trane radiators and want to install a elec boiler w/ monoflo sys single zone. 34000btu Argo Boiler Continue reading

help with thermostat wiring

______________________________________________________________________ I realize you get a lot of questions on thermostat wiring however, I need some help please. I have an older model (second hand) tempstar heat pump and air handler. I installed a honeywell thermostat. Not having a heat Continue reading