Home Improvement

What is a millivolt valve?

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.

What’s the difference between millivolt and electronic ignition?

A millivolt system does not require any external power, and operates solely off of the pilot light being lit, whereas an electronic ignition system requires external power, usually a standard electrical outlet.

Is my gas fireplace millivolt?

The millivolt generator in your gas fireplace has a gas valve that requires a minimum of 250 millivolts to keep the valve open. If the pilot goes out then the gas valve will close, stopping the flow of gas to the burner. The millivolt generator will produce about 350 millivolts when not connected to a device.

What does millivolt mean on a fireplace?

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 switch work?

The most common type of gas fireplace uses a millivolt ignition system. The piezo ignitor is usually connected to a button that generates a spark when depressed. The pilot flame heats both the thermocouple and thermopile sensors. These sensors contain material that creates a small amount of voltage when heated.

How do I know if I have a millivolt heating system?

To find out which kind you have simply remove your thermostat from the wall and just look at the wires that are connected to it it's not hard all you need is a screwdriver.

How do you wire a millivolt gas valve?

Actually wired into the gas valve and it's wired into the pilot solenoid valve. So we have our power coming into the tht p on the red wire right here and that gets connected to this wire.

How do you light a millivolt fireplace?

First the first step is to make sure that the main burner switch is turned off which it is on this appliance. We will then locate the operator knob which is this knob.

How many millivolts does it take to open a gas valve?

A new 750 should put out 750 if pilot flame is proper. Under load 550 is good. Alot of valves require min. 350mv to open burner.

Does Nest thermostat work with millivolt?

The Nest is not like a thermostat that typically uses internal relays to switch on/off the call for heat/cooling and thus don’t really care what the voltage being switched is. The Nest is all solid state, so likely will not work to switch a millivolt relay.

What kind of switch do I need for a gas fireplace?

What type of wall switch for a gas fireplace? Gas fireplace wall switches are toggle switches that work at a ‘millivolt’ level. Meaning, they operate within very low voltage(200-1000 millivolt) instead of a regular 120V switch.

How do I convert my manual gas fireplace to remote control?

  1. Step One: Get a Smart Thermostat Remote And Receiver. …
  2. Step Two: Install the Battery Into the Transmitter. …
  3. Step Three: Insert Battery Into the Receiver. …
  4. Step Four: Operating the Receiver Fireplace Remote. …
  5. Step Five: Perform the Learn Function. …
  6. Step Six: Installing the Receiver. …
  7. Step Seven: Test the Remote Control Function.
  8. What is the wall switch for on a gas fireplace?

    The wall switch sends an electrical signal to your fireplace to open a valve and release the gas for the pilot light to light it. Without power most fireplace valves will not open.

    Is it OK to leave pilot light on gas fireplace?

    Generally speaking, it is safe to leave your continuous pilot light on at all times, assuming it stays lit (more on this in a moment). While it does cost more to keep your pilot light on in between uses, it can actually have some benefits to your system.

    Do you leave the gas on in a gas fireplace?

    The Bottom Line

    The short answer is this: gas fireplaces that are fully vented and have safely and properly sealed glass fronts are fine to be left alone to run continuously.

    Why won’t my gas fireplace turn on when I flip the switch?

    What can happen over the years, is that the connections inside the switch can get dirty, corroded, or broken, causing a loss of this voltage at the switch. So by the time the small amount of voltage gets sent back to the fireplace, it is not enough to signal the fireplace to turn on.

    What would cause a gas fireplace not to ignite?

    If nothing is blocking the tubing, and gas is flowing out, there might be something wrong with the spark igniter and thermocouple. Make sure there’s no debris lodged between the two. If the pilot light ignites but doesn’t stay lit, you might need to replace the igniter.

    How do you test a gas fireplace valve?

    Completely light the pilot. Turn the gas knob to the on position. Turn the burner on in a high position check the pressure and record it shut the burner off.

    Why does my gas fireplace flame go on and off?

    Bad Thermo Couple or Thermo Pile

    A thermo couple is a sensor device that detects heat and permits the pilot light to stay lit. One of these devices could have gone bad or may have shorted out, causing your fireplace to turn shut down or turn back on at random.

    Why does my gas fireplace shut off after 20 minutes?

    If you get dust in the pilot assembly and the pilot needs to be cleaned out, it produces a “lazy” flame, which will be disturbed by the draught of the main burners. The flame lifts away from the thermocouple and causes the temperature on the tip of the thermocouple to drop. This, in turn, makes the gas valve shut off.

    Why is my gas fireplace hot when off?

    When your pilot light remains on, a small amount of heat is generated. The glass doors on your gas fireplace remain warm to the touch. When the weather is hot outside, it makes sense to eliminate any additional heat sources inside the home, especially if you are running air conditioning inside the house.

    How long does a gas fireplace last?

    ten to fifteen years

    How Long Can a Gas Fireplace Last? Generally speaking, you can get a good ten to fifteen years of use before you need to replace your gas fireplace.

    How much does it cost to replace a gas fireplace valve?

    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

    Do you ever have to replace the logs in a gas fireplace?

    A: Gas log sets require no daily maintenance but should be inspected annually by a professional. Logs need to be inspected for cracks and breaks and replaced if they are not in sound condition. Valves, pipes and gas connections should also inspected to ensure they are in good repair.

    Can you leave a gas fireplace on all day?

    In general, you should not run an unvented fireplace for more than three hours at a time. If you are using natural gas, you can usually run your fireplace for up to four hours before needing to refuel. If you are using propane, the limit is typically two hours.

    Is it cheaper to run a gas fireplace or the heat?

    A modern furnace is more efficient in turning gas into heat than a gas fireplace. This means that although a furnace costs more to run per hour than a gas fireplace, it turns more of that energy into heat and can warm a whole house rather than a single room.

    Can a gas fireplace explode?

    Although convenient, these home gas fireplaces pose significant risk of explosions and house fires if they are improperly installed or maintained. Gas Fireplace leaks can result in carbon monoxide poisoning, but can also result in explosions that can level an entire neighborhood block.