Check out some similar questions!

Recentgrad · Nov 20, 2009, 07:13 PM

Help, I need wiring info for an old ITT general control gas valve on an outdoor swimming pool heater. The valve has 4 terminals, 2 labeled thermostat and 2 for the millivolt generator. I understand the safety devices get wired in series but I am not sure how the on/off switch and thermostat get wired in.
Thanks,
Mike

letmetellu · Nov 20, 2009, 08:22 PM

If one of the post that says thermostat has a jumper to one of the post that says thermostat. You will tie one of the wires from the generator to the post marked generator but not jumpered. Now tie the other wire from the generator to a wire from the thermostat using a wire nut. The other wire from the thermostat will go on the gas valve shere it says thermostat.

If you do not have a jumper between the two post then wire it as below.

Take both wires from the power source and connect to the posts that says millivolt. Use another wire and go from one of the post that says transformer, run this wire to all of your safety switches. Then go to the R terminal (but either one is OK) now connect anoother wire to the other post on the thermostat and run it to the gas valve and put it on the other post that says thermostat.

Recentgrad · Nov 21, 2009, 02:33 AM

Thanks I will try it tomorrow!
Mike

KC13 · Nov 21, 2009, 06:30 AM

It's November, and you're still swimming... must be nice! :D

Recentgrad · Nov 21, 2009, 05:30 PM

Originally Posted by KC13

It's November, and you're still swimming...must be nice! :D

Not only am I still simming but I am still golfing! Temps are in the high 60's/low70's. I completely rebuilt my teledyne labs ancient pool heater and it now works like new. I knew my HVAC/R training was going to pay off. Only 5 more weeks and I am ready to roll.

Recentgrad · Nov 21, 2009, 05:31 PM

Originally Posted by recentgrad

not only am i still simming but i am still golfing! Temps are in the high 60's/low70's. I completely rebuilt my teledyne labs ancient pool heater and it now works like new. I knew my hvac/r training was going to pay off. Only 5 more weeks and i am ready to roll.

Oops! I meant swimming duh.

mackfamily · Dec 20, 2009, 04:42 PM

I think I have the same gas valve for an existing fireplace in our house (purchased the house a little over a year ago). I'd like to reuse the ITT General Controls valve, but it only has 2 wires from the switch to the gas valve. The switch isn't connected to any power sources so I assume it will need something for the ignition. I cleaned all connections for the gas lines from the valve to the fireplace and can get a steady pilot to stay on, but don't know what I need for a power source. If anyone can tell me how to wire and what voltage I need, I might be able to track down some abandoned wiring nearby as the previous owners weren't too careful with cutting wires or running them for that matter.

Thanks in advance for your help

Ps. I'm a novice at best with home reno, so please use simple terms I can understand.

hvac1000 · Dec 20, 2009, 06:05 PM

It is not suggested you cross use any gas valves for any units unless it is the same exact part number or has been issued a substitute part number from the factory manufacturer. What you are trying to do should not be done. The valve is a safety device for the control of gas flow and as such has a UL or CSA listing for use on a particular piece of listed equipment only.

jescher356 · Dec 27, 2009, 03:22 PM

Hi I also have an ITT gas valve. It's for a direct vent wall mounted Empire Heater. Yesterday the pilot went out I could start the pilot but when I went to release the pilot button, the pilot light went out. I assumed it was the thermopile and went and bought a new one, replaced it and no deal it did the same thing. I happen to have a DC power generator (for electronics work) and hooked it up at 750 MV. It worked fine, the pilot light stayed on and I could make the burner work. So I left the Thermopile in the burner and measured the voltage. It read about 650MV. So I backed my DC generator back to 600MV, then 400MV and It continued to work fine. Then I tried the Thermopile by it self (making sure polarity was correct) and it failed again. I'm stumped... can anyone help me figure out what is the problem?

hvac1000 · Dec 27, 2009, 04:12 PM

The thermopile must have the flame around it to generate enough juice. Hook up your meter to the thermopile and light the pilot. Move the thermopile around the flame and you will see what I mean. Your pilot could also be weak or the orifice is partially restricted by dirt,spider web. etc.

Cheater circuit not to be used lightly. LOL. I posted it since you seem like a smart guy. Makes up for a weak thermopile.

guyinsb · Oct 14, 2011, 08:44 AM

Likely a cold thread at this point, but any chance jescher356 could tell what the part number of the gas valve is? My old system uses a General Controls B-60:
https://picasaweb.google.com/112652995081934659158/GardenHeating#5660407623868116866

pw2003 · Jan 11, 2012, 10:11 PM

Did you get your fixed? How did you fix it? I have similar problem with my fireplace with ITT millivolt valve. The pilot light stays on but cannot get the fireplace burner on. The thermopile voltage is 600 mv. Is it too low? There are four screw terminals on the valve. How do I tell which terminal for thermopile or wall switch? Does the red or white wire of thermopile needed to hooked up certain way? Do I need jumper by the way wall switch terminal and thermopile terminal. Any schematic or suggestion?

guyinsb · Jan 19, 2012, 05:23 PM

I hired a mechanical engineer for advice. He approved my choice for a replacement valve:
A Robertshaw 700-506 Combination Gas Valve (powered by a 750mv thermopile and standing pilot light).
So I now have a replacement valve in my possession, in case the old ITT GC60 valve fails.
But it seems to be chugging along this winter just fine. I will probably install and test the new
Valve this summer.