What does th and Tr mean on gas valve?

What does th and Tr mean on gas valve?

TH – The 24v hot leg from the thermostat on a call for heat (R+W closing) to the gas valve (TH terminal) to open the solenoid to allow gas to flow. This is assuming that the transformer is good and the high limit is closed. TR – The 24v common/return side of the transformer.

What does millivolt ignition mean?

Direct Vent Millivolt Ignition Millivolt ignition systems use a standing pilot light. This type of ignition system does not require any external power. Millivolt ignitions are also remote ready and can accommodate anything from a simple on/off wall switch to a programable thermostatic remote.

How does a millivolt gas valve work?

Millivolt Gas Valve This type of valve makes use of a standing pilot that continuously burns to heat a device, either a thermocouple or thermopile, which then produces a small amount of electricity – less than a single volt, hence “milli”-volt.

How do I turn on the furnace gas valve?

Follow these steps:

  1. Turn off power to your furnace.
  2. Remove the two wires from their terminals on the gas valve.
  3. Stick your multimeter probes into the wires.
  4. Turn power on to your furnace.
  5. Observe your furnace.
  6. If your multimeter does NOT read 24 or 120 volts, then it is probably an issue with your control board.

Why will my gas fireplace not stay lit?

Improper gas pressure The thermocouple and thermopile are the two most common reasons why a gas fireplace won’t stay lit. However, there are other possibilities out there. Another common culprit is incorrect gas pressure. As the seasons pass, you may find that your gas pressure drops below where it needs to be.

Can Reznor products be serviced by a licensed contractor?

All servicing of product should be performed by a licensed contractor according to local and national code requirements. All material in this site is protected under copyright laws. Any and all use or reproduction other than for repair/installation of Reznor products is expressly forbidden.

Why choose Reznor heaters?

When its cold outside, Reznor brings the heat. For more than 90 years, we’ve delivered reliable, high-efficiency unit heaters to our customers. Our unit heaters feature attractive, high-gloss exteriors, components engineered for quality, and a complete range of options to fit any application.

Can I use Reznor products on my computer?

Any and all use or reproduction other than for repair/installation of Reznor products is expressly forbidden. You will need to have AutoCad or Autodesk View installed on your computer. If you do not have Autodesk View, follow these steps: To view the wiring diagrams download and install the free version of Voloview Express from Autodesk.

How many years of experience does Reznor have on their products?

with over 130 years of experience. of experience. Learn more about some of Reznor’s products below or check out the All Products page for even more products. When its cold outside, Reznor brings the heat. For more than 90 years, we’ve delivered reliable, high-efficiency unit heaters to our customers.