How To Use A Manometer On A Furnace

Monday, March 4, 2019

How To Use A Manometer On A Furnace

The manometer will give the reading in water column in inches. For residential furnaces use only 2 probes.

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Connect the manometer to the unit via the slot and the pipe that extends from the manometer device.

How to use a manometer on a furnace.

Turn on the furnace and start it.
What tool to use to open the port with the gas off and the connection to the digital water column.
Turn gas on and check for leaks around tap screw.

Adjusting and measuring lp gas pressures on a two stage furnace with a fieldpiece dual port manometer.
Press the power button to turn the manometer on.
Checking and adjusting the outlet gas pressure going to the burner tubes on a gas furnace.

For large or industrial furnaces you can use up to 4 probes.
The probes and hoses come with the manometer when you purchase it.
Turn off the furnace the gas cock and the power of the unit before you remove the plug.

Tim turner hvac technician at flame heating cooling plumbing and electrical in warren michigan demonstrates how to measure and adjust gas pressure on a high efficiency residential gas furnace.
Using manometer to diagnose furnace problems.
You can purchase a digital manometer at most hardware stores for under 40.

Fieldpiece dual port manometer demo the cold truth air conditioning heating llc.
Find the power button on the manometer which is normally in the front.
Summary if a u tube or magnehelic manometer is used they will show a vacuum when a furnace starts.

A while back someone posted some good information in a thread on how to use a manometer to diagnose problems with a furnace heat exchanger pressure switch or inducer motor.
Turn on the device.
Using manometer to diagnose furnace problems.

Screw back in the gas valve plug using a small amount of pipe dope.