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Phil, Mechanical Engineer
Category: HVAC
Satisfied Customers: 6022
Experience:  Retired HVAC/ Electrical & Boiler contractor. Industrial
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Have a 1982 com-5-p1, series 7 boiler. The 24 volt

Customer Question

Have a 1982 com-5-p1, series 7 boiler.
The 24 volt transformer/relay is only putting out 12 volts.
Several techs tried to replace but don'T seem to know how to replace.
The replacement part seems to be wired differently.
Need help.
Thanks Ed
Submitted: 10 months ago.
Category: HVAC
Expert:  Phil replied 10 months ago.

Hello Ed, send me some photo's I will take a look at it for you, I need some with the both the 120v primary and 24v secondary wiring exposed and well lit enough so I can see what is going on.

Use the paper clip icon at the right end of the tool bar above, or the attach files link to the left of your send button.

we can go from there

Expert:  Phil replied 10 months ago.

Include any brand or model numbers on the transformer relay assembly please.