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Proactive Maintenance for Controls on a 37 Year Old Utica MGB100 Boiler

allthumbs
Member Posts: 10
in Gas Heating
I have had no problems with the E6H86 gas valve on my 37 year old boiler. I have replaced the White Rodgers 5059-23 Pilot Relite Control and leaded electrode. I want to have on hand a spare mercury switch module that plugs into the gas valve. I just don't know what part number is applicable. The original mercury switch is #5098 without subtype. The switches available are 5098-20, 5098-134, 5098-156. Does anyone know which switch is compatible with my gas valve?
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Comments
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That gas valve is no longer available.
Can you post a pic of the pilot assembly, so we can see what type it is?All Steamed Up, Inc.
Towson, MD, USA
Steam, Vapor & Hot-Water Heating Specialists
Oil & Gas Burner Service
Consulting0 -
Try "supplyhouse.com", They may have what you are looking for.0
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I had one fail on a furnace. At the time the recommended replacement was a standing pilot valve. Still working fine.
The advantage is keeping your boiler warm in the humid basement during the summer.
But, some gas usage needed.0 -
Here's a picture of the pilot assembly on the boiler flange. I don't dare unbolt it because I'm afraid it will cause the mercury bulb to disintegrate from old age.
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I have bitten the bullet and purchased a style #19 mercury switch. I seem to remember the bulb was perfectly straight on the old one. The #19 is a straight bulb, and the #20 has a bulge in it. I'll only know for sure when the switch is replaced.0
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