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BillyHvac, Journeyman HVAC Tech
Category: HVAC
Satisfied Customers: 22627
Experience:  Endorsed for unlimited heating, cooling, oil burners, boilers, refrigeration, hydronics
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Do I have a problem with my IBC on my CV90+5 when I only get

Customer Question

Do I have a problem with my IBC on my CV90+5 when I only get power to system circ motor
when the boiler itself is heating and not when zone valve end switches or end switch of
zone valve for DHW are asking for heat.................????
Submitted: 1 year ago.
Category: HVAC
Expert:  BillyHvac replied 1 year ago.

The circ pump should run the entire time the system/zone is calling for heat. The loop may be satisfied..but the pump should run.