Question about Heating & Cooling
I want to know how to connect the thermostat and thermocouple to that valve.
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Posted on Jan 02, 2017
If you have a volt ohm meter take the two leads off the gas valve and ohm out the connection should have resistance for the coil. You said you have 12 volts from the thermostat white and red in the heating mode you should have minimum 26 volts. If you want to check the transformer should have 28 volts. Almost sounding like the transformer is getting weak. You can get parts for a 20 year old unit at any HVAC parts house. Try Washer Specialties here in Wichita Kansas they are on the web. Lowes even carries Transformers. Has to be rated 120 volt primary side secondary side 24 volts and 40 VAC.
Posted on Nov 24, 2008
SOURCE: I installed a new thermocouple
Few things to check are
Is the length an exact match to the old thermocouple?
The START button let out small amount of natural gas to heat up the thermocouple
If the length / reach is not the same then the small gas tubing that heat the TC will not be effective.
Is there any frame shield when you disassemble the unit?
I will recheck the distance between the small starter gas tube and the original REACH of the TC,
Set the new TC to the same distance on the small START tube and adjust / match the original TC reach.
I will check on my reference material for frame shield
Please use a magnet or vacuum to locate a shield type metal.
This will be the key reason why you NEW TC keep going out.
=== Set the Williams Ceramic Gas Wall Mounted Panel Heater to the lowest setting and re-try.
Please keep me up to date on the fix via email.
Posted on Jan 22, 2011
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it is important to turn off
the gas supply to the water heater at the manual gas shut-off
valve. This valve is typically located beside the water heater.
Note the position of the shut-off valve in the open/on position
then proceed to turn it off.
2. On the lower front of the water heater locate the combination
gas control valve/thermostat. Depress and hold
the lock tab located under the gas control knob on the right.
Rotate the gas control knob on the combination gas control
valve/thermostat clockwise until "OFF" aligns with the mark on
the front of the gas valve. Once the gas supply has been shutoff,
remove outer door. 3. Using a 1/4" nut driver or socket loosen the two screws securing
the manifold door assembly until they are free. Do not
totally remove the screws and plastic retainer washers from
the manifold door. The screws and retainer washers will be
needed to reattach the manifold door. 4. In this step, the thermocouple, manifold tube, pilot tube and
igniter wire will be disconnected from the combination gas
control valve/thermostat. Using a 7/16" wrench
disconnect the thermocouple (left-hand thread) and pilot tube
(right-hand thread). Using a 3/4" wrench disconnect the manifold
tube (right-hand thread). Carefully pull the igniter wire from
the igniter button.
5. Grasp the manifold tube and push down slightly to free the
manifold tube, pilot tube, and thermocouple from the combination
gas control valve/thermostat. when installation is complete and gas is back on, You should be able to relight the pilot and the functionality of your gas hot water heater should be restored.
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