Question about Honeywell CT87B ROUND HEATING&COOLING MECHANICAL THERMOSTAT - WHITE Heater

Open Question

Wiring for 2 wire honeywell heater rth221b1021

Posted by Anonymous on

6 Suggested Answers

6ya6ya
  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

Hi,
a 6ya expert can help you resolve that issue over the phone in a minute or two.
best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
the service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
goodluck!

Posted on Jan 02, 2017

  • 30 Answers

SOURCE: Honeywell TH8000 5 wire

7wires? wtf with that! how many things you got runnin there. you need to give way more info to get a decent reply.

Posted on Feb 04, 2008

  • 1 Answer

SOURCE: rewire an old 2 wire thermostat to a honeywell 5-1-1 programmable

I connected the blue wire to the R and the white wire to the W on the old thermostat and shoved the new Honeywell 5-1-1 Day programmable thermostat up the first guys *** that i ran into at Canadian Tire

Thanks for your help

Posted on Dec 29, 2008

billyvangogh
  • 108 Answers

SOURCE: need to wire a honeywell RTH7400D thermostat to 3 wire hot water

Just mark the old wires on the old thermnostat...R , W etc...and put them on the same terminals on the new 1.....also there should be some adjustment ire : switch on the back or under the cover to adjust for Hot water heating or electric heat...either is the setting you should have it on....also you shouldn't setback the thermostat at night or when away very much....2 degrees is fine , as the boiler will run along time to raise the temperature in the morning and may not get there by the set time

Posted on Oct 26, 2009

  • 79 Answers

SOURCE: i have a red and a white wire but the heater wont

It sounds like you have at least 2 zones in your system. If this is a normal hot water boiler system with zone valves. When you have your thermostat call for heat it closes the 24 volt circuit that then energizes the motorized zone valve for that thermostat. In that motorized zone valve there is an end switch that will close and complete the circuit to the boiler. Zone valves when they start to clog up with mineralization will not allow the motor to go far enough to close the end switch, so then the boiler and circulating pump will not come on. If this is the case then you need to have the zone valve replaced.
Also make sure your wires at the thermostat are connected correctly. One thing you could also check at the thermostat to make sure it works or not is to jumper the 2 wires and see if your system starts up or not. If the system starts up then the thermostat or its subbase is defective. Hope I was of help to you!! Good luck!!

Posted on Nov 29, 2009

  • 587 Answers

SOURCE: I have 2 Honeywell TH5220D thermostats installed

Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions
If you can’t find what you want, the bottom left and bottom of web
Page, they have homeowners assistance and Home products to get the help you need.

Posted on Apr 07, 2010

Add Your Answer

Uploading: 0%

my-video-file.mp4

Complete. Click "Add" to insert your video. Add

×

Loading...
Loading...

Related Questions:

1 Answer

I just bought a Honeywell 5.2 Day RTH2300B Programmable thermostat to replace my old mercury thermostat for my gas fireplace. When I took of old thermostat it only has two wires. A white wire and a black...


I just installed a Honeywell 5.2 Day RTH2310B Programmable thermostat and I had to deal with the same situation: 2 wires, one white one black. After reading the edvice in one of the blog, the solution that worked for me was: BLACK ON Rc terminal and WHITE on W terminal. My furnace is running fine now. Hope it helps.

Dec 06, 2010 | Honeywell Focus 6300B 5-2 Days...

1 Answer

Need to wire thermostat


one wire to R the other to W (or W1). Dosent matter which is which

Oct 17, 2009 | Honeywell Electronic Programmable...

1 Answer

What terminals do you use for 2 wires


hook one up to R and the other to W (or W1) dosent matter which is which

Oct 16, 2009 | Honeywell Electronic Programmable...

1 Answer

Wiring for a Honeywell RTH2310B


HONEYWELL WEBSITE:
Go to honeywell.com
Under red welcome sign
Bottom red highlighted box literature/image search
Type in thermostat model number
Click on arrow to right
Then click on the PDF files owners manual / installation instructions

Jan 10, 2009 | Honeywell Focus 6300B 5-2 Days...

1 Answer

Rewire an old 2 wire thermostat to a honeywell 5-1-1 programmable


I connected the blue wire to the R and the white wire to the W on the old thermostat and shoved the new Honeywell 5-1-1 Day programmable thermostat up the first guys *** that i ran into at Canadian Tire

Thanks for your help

Dec 28, 2008 | Honeywell Electronic Programmable...

1 Answer

Replacing Round Honewell Mercury Thermostat


try to get one that is made for oil heat, the installation is easy only two wires, and the instructions make it easy.

Oct 23, 2008 | Honeywell Electronic Programmable...

1 Answer

Honeywell RTH230B


This my situation exactly.  Changing from a 6 wire manual round Honeywell thermostat to a 5 wire Honeywell programable.  Is there a way to maintain all functions?

Sep 21, 2008 | Honeywell Programmable Thermostat Heater

2 Answers

Wiring on thermostat tl7235a1003


OK, here's my guess at this...I hope someone more knowledgable will confirm or correct me.

A line voltage thermostat switches the power to the baseboard heater. In other words, it's just like a wall light switch except it activates and deactivates based on the temperature.

I think your old model CT62 was wired exactly like a light switch. The hot wire to the light is broken then run to the wall switch and then back to the light so there's no neutral wire at a light switch box. This worked fine for your CT62 because it did not need power, it only needed to switch it.

The new model TL7235A1003 requires electrical power because it's programmable so you need both a hot wire and neutral wire at it's installed location. In addition you also need 2 wires leading to the baseboard heater so the thermostat can supply it's power.

I believe L1-L2 are to be connected to the hot/neutral wires, and the Load wires go to the baseboard heater.

If I am correct you will not be able to use this thermostat without some re-wiring.

Good luck.

Nov 27, 2007 | Ingram GMS90904CXA Heater

Not finding what you are looking for?
Heating & Cooling Logo

Related Topics:

53 people viewed this question

Ask a Question

Usually answered in minutes!

Top Honeywell Heating & Cooling Experts

Bill Long

Level 3 Expert

587 Answers

paulcarew

Level 3 Expert

2460 Answers

Brandon Berry
Brandon Berry

Level 2 Expert

407 Answers

Are you a Honeywell Heating and Cooling Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

Loading...