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BillyHvac
BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22469
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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I am changing a Honeywell R7184B oil primary control on a

Customer Question

I am changing a Honeywell R7184B oil primary control on a forced air furnace to a R7284B,P,U,G unit. The former had no limit connection on it. The latter does. Can I just cut the L1 wire and connect that to the Limit connection with another wire? or do I need to run a separate wire from the junction box?
JA: Did you double-check the thermostat's settings? And what about the filters?
Customer: the stat is ok and the filters are new
JA: Do you plan on doing the work yourself?
Customer: yes
JA: Anything else we should know to help you best?
Customer: no I am a liscensed engineer
Submitted: 7 months ago.
Category: HVAC
Expert:  BillyHvac replied 7 months ago.

Hello,

My name is Billy.

You can just splice the input and the limit and 120v all together.

As long as you feed both with 120v. Now if the Limit fed the old control, adding that would be another safeguard.

But short story is you use the (1) 120v to feed both.

Billy

Expert:  BillyHvac replied 7 months ago.

do you have any more questions you would like info on?

Billy