Gas and Oil Home Heating Furnaces - Thermostat Question
Doityourself.com community forum was created to provide answers to all questions related to home improvement and home repair. Doityourself community can help you find information about how-to topics on small fixes to large remodeling projects. With comprehensive how-to content and expertly moderated community forums DoItYourself.com makes it easy to tackle even the most complex home improvement projects.View Full Version : Thermostat Question
Milk Maidan
11-10-02, 04:07 PM
I have 120 volt coming out of the unit heater for the thermostat. Do I need 120 volt thermostat or will a house 30 milvolt work. Or what type of thermostat do I need. Thks
fjrachel
11-10-02, 06:41 PM
If you have 120v coming out of your unit for the t'stat, that's what you need.
GregH
11-10-02, 06:54 PM
Milk Maidan:
What does the thermostat look like?
Is it wall mounted with a round knob?
If you test the voltage at the thermostat connections and get 120 volts you are likely testing the circuit with the heater or starter coil in the circuit.
It could very well be a 240 volt heater.
If you look carefully at the old thermostat the specs should be there.
What does the thermostat look like?
Is it wall mounted with a round knob?
If you test the voltage at the thermostat connections and get 120 volts you are likely testing the circuit with the heater or starter coil in the circuit.
It could very well be a 240 volt heater.
If you look carefully at the old thermostat the specs should be there.
GregH
11-10-02, 08:53 PM
Milk Maidan wrote:
"It is a brand new honeywell wall thermostat. The pilot light lights then the flame ignites the burners for 10 seconds and then the flame goes to only half the burners then rolls out completely. It has a new gas valve and thermocouple and I also connected another unit heater up to this line and it does the same thing. The line is 3/4 all the way from the meter and seems to have lots of pressure, ( I can feel the gas blow on my hand quite strong) since I do not have a gas flow meter, this is the only test i have. I just wondered if between the thermostat and the heater thermostat line if it needs a step down fron 110 to 30 then to the thermostat. Is this why the flame is rolling out? Anyways, my horses would sure appreciate some help"
GregH response:
Did you install the new gas valve yourself?
It is possible that there is an electrical problem but I don't think so. There are a few causes for delayed ignition but this is not a DIY repair. It could be a gas supply, electrical or even ventilation problem, but it would be dangerous for you to try to fix it yourself. The system has to be checked by a licensed tradesman, with proper test equipment.
I would ask you to turn off the gas supply and call a professional.
Let us know how it turns out.
"It is a brand new honeywell wall thermostat. The pilot light lights then the flame ignites the burners for 10 seconds and then the flame goes to only half the burners then rolls out completely. It has a new gas valve and thermocouple and I also connected another unit heater up to this line and it does the same thing. The line is 3/4 all the way from the meter and seems to have lots of pressure, ( I can feel the gas blow on my hand quite strong) since I do not have a gas flow meter, this is the only test i have. I just wondered if between the thermostat and the heater thermostat line if it needs a step down fron 110 to 30 then to the thermostat. Is this why the flame is rolling out? Anyways, my horses would sure appreciate some help"
GregH response:
Did you install the new gas valve yourself?
It is possible that there is an electrical problem but I don't think so. There are a few causes for delayed ignition but this is not a DIY repair. It could be a gas supply, electrical or even ventilation problem, but it would be dangerous for you to try to fix it yourself. The system has to be checked by a licensed tradesman, with proper test equipment.
I would ask you to turn off the gas supply and call a professional.
Let us know how it turns out.
GregH
11-11-02, 03:31 AM
Milk Maidan:
I checked back and found that you have posted questions on this heater twice before.
In one instance you mention that this heater is from 1945.
You also were previously cautioned by Tom_Bartco to seek professional help on this problem.
I am quite sure you are a capable DIY'r, but this is one time I feel you should back off.
I worry about the safety of you and your horses.
Please seek professional help.
I checked back and found that you have posted questions on this heater twice before.
In one instance you mention that this heater is from 1945.
You also were previously cautioned by Tom_Bartco to seek professional help on this problem.
I am quite sure you are a capable DIY'r, but this is one time I feel you should back off.
I worry about the safety of you and your horses.
Please seek professional help.
Milk Maidan
11-11-02, 09:11 AM
The sensor had to be reset. Bingo HEAT!!!! A DIY prevails again ! Daddy would be proud. Got the answer in icq. Thanks for all your help regardless.Bye for now.
GregH
11-11-02, 10:25 AM
Milk Maidan:
Glad to hear it all worked out.
Curious to know which sensor you reset.
Glad to hear it all worked out.
Curious to know which sensor you reset.