Have a Warren Webster Hot Water Heater Model 12H21 (old); Want to hook up in garage.

salvetmike

what kind of thermostat do I need to make it operate the circulator on my oil/hot water furnace.
Warren Webster heater has 6 wires-green/white/yellow/red/black/blue.
Please advise. Thanks.

salvetmike

can anyone help with my problem?

Abracadabra

Your question leaves some things to the imagination. A water circ only needs 2 wires. Not sure why you are bringing up the wires on the boiler. Are you looking for a room thermostat or an aquastat?

salvetmike

well to tell the truth, I don't know what I'm doing! Found your site and I'm trying to figure out how to hook this thing up to run off my oil furnace. There is so little info on the heater that I don't know what to do. I can't tell you the difference between a aquastat or room thermostat. All I know is the fan motor has all these wires coming off it and I don't have a clue as to how to hook it up and to what. I appreciate the help.

Steamhead

Take a picture and post it here.

salvetmike

these are the pics of heater. thanks for the help.

JStar

That looks like a multi-speed blower motor; most likely newer than the entire unit itself. You may be able to use this guide for wiring:

WHITE = Common
BLACK = High Speed
BLUE = Med/High
RED = Med/Low
YELLOW = Low

Do you have a model number for the motor?

salvetmike

The info on the motor is Packard Inc. stock no 81617, mod# 8214365039. made in mexico... Thermally protected class b conduit. Air over hp115, rpm1550, v115/208-230, hz 60, amps 2.1/1.1, and this # was down by the trade mark, v111.03. Hope this helps you. Thanks for the time.

salvetmike

I also need to know what type of thermostat to use with this heater.

Don_197

that is a 4 Speed Motor. you need to pick a speed and only use the WHITE wire with whatever speed you choose.

Black is High
Blue is Medium
Yellow is Medium Low
red is Low

For example, if you want to use Medium Low speed (yellow) you will hook your 115V Hot wire to Yellow and your 115V Neutral wire to WHITE

A line voltage thermostat will work, and you'll run your fan wiring through that (if its a single pole line voltage stat break the yellow wire or whatever speed you choose......if its a double pole stat run both wires......one to each pole of the thermostat)

salvetmike

Thank you Don! But I have one more question??? Will the Circulator on the furnace run off the thermostat and is it wired into the thermostat?

Don_197

Sorry it took so long to respond Mike. You have now given more information that may mean the info I provided you is not correct. If that is a multi voltage motor, it MAY be wired for 208 vs 115.............you will need to verify this.........with the wiring diagram on the motor. I think you are now out of your realm.........you need a pro to help you with this. the circulator can either operate with an isolation relay off the line voltage thermostat that you would use to turn the fan on or off with a heat call, or you could wire it to run continuously (not a bad idea on shop heater). Call a pro to help you.

salvetmike

Thanks Don, I really appreciate your help! You did lead me in the right direction from the start. I now know that I need a pro.
Much thanks, Mike.