What is a unitrol valve?
We’re going to discuss a Robertshaw uni-control valve. This is a temperature sensor that controls the temperature and thermostat, connected to a thermocouple that holds down the pilot.
How does a thermostatic gas valve work?
The temperature-reading thermostat on a gas valve is located inside a copper tube that protrudes into tank and reads water temperature. Hot water rises to the top of tank, and gas continues to burn until bottom of tank is heated to the thermostat setting, causing gas control to shut off gas to burner.
How much does it cost to replace gas valve?
A furnace gas valve replacement costs $200 to $800 on average. Furnace gas valve prices are $75 to $300 for the part alone or up to $600 for original manufacturer parts (OEM). Gas valve replacement labor costs $125 to $500….Furnace gas valve replacement cost.
| National average cost | $500 |
|---|---|
| Minimum cost | $125 |
| Maximum cost | $1,000 |
| Average cost range | $200 to $800 |
How does a gas valve on a water heater work?
A water heater gas valve works by opening and closing to control the intake of gas, regulating the temperature in the water tank. The gas valve is controlled by a thermostat, which signals for the valve to open with low temperatures and close when it reaches the heating threshold.
How to fix gas water heater?
Light a gas water heater pilot light: Remove the burner access panel. Read and follow lighting directions on or near the cover.
How do you replace the thermostat on a gas water heater?
Below are steps on how to replace a thermostat on an electric water heater: Turn off the electric power of the water heater. Take off the front panel door and then fold up the insulation pad. Unclip the thermostat from its bracket. Disconnect the wires from the thermostat. For proper re-connection to the new element, do label the wires.
Do water heaters run on gas or electricity?
A gas water heater uses the heat from burning a fuel (usually natural gas) to heat water, while an electric water heater uses electric resistance coils. Gas water heaters are less energy efficient than electric heaters, but the cost of electricity itself makes the running costs of an electric heater higher.
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