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Heating boiler gauge replacement: this article describes the steps in replacing a pressure or temperature gauge on a hot water (hydronic) boiler or on a steam boiler.
We give two different approaches to boiler gauge replacement, a wet process that is done without draining the boiler and a dry gauge replacement process that requires draining water out of the heating equipment.
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My pressure temperature gauge is leaking on my Mclain p-wtgo-3 oil fired boiler. It seems like an easy fix.
How to I safely drain and refill the water in the boiler to effect this repair? By the way, the boiler is only about 3 years old. It doesn't speak well for Mclain products. - J. Wojciechowski
Reply: Basic outline of how to replace a heating boiler pressure/temperature gauge
J. Wojciechowski, You're right that just replacing the pressure/temperature gauge itself is usually mechanically simple - as long as you buy an OEM part you'll have exactly the same item as before.
At left we illustrate a standard hydronic heating boiler replacement gauge that reads pressure and temperature. This replacement boiler gauge is produced by the Watts Regulator Company - in the U.S. see www.wattsreg.com or in Canada see www.wattsca.com for details.
Basically to replace a heating pressure/temperature gauge one would:
Wet process vs draindown process for boiler gauge replacement
At this point there are 2 choices:
The "wet" process for changing a heating boiler gauge (this process can avoid having to purge air from the heating system)
The "dry" drain-down process for changing out a heating boiler gauge (this procedure will require purging air from the heating system)
How to Return the boiler to service after Boiler Gauge Replacement
With new boiler pressure/temperature gauge in place, you will need to:
Continue reading at GAUGES, HYDRONIC BOILER or select a topic from the More Reading links shown below.
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BOILER GAUGE REPLACEMENT at InspectApedia.com - online encyclopedia of building & environmental inspection, testing, diagnosis, repair, & problem prevention advice.
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