Burnham Boiler 8116322 Vent Damper THPU32HP7Y listen for the reversing valve

listen for the reversing valve shifting

this collector box ensures proper venting and drainage

leak-free braze joint for standard copper linesets

Extended Voltage Tolerance: Rated at 440V to provide a safer operational margin compared to 370V alternatives

Burnham Boiler 8116322 Vent Damper THPU32HP7Y listen for the reversing valveThe Burnham 8116322 5 inch automatic vent damper is a critical electromechanical component designed to improve the AFUE rating of high efficiency gas fired atmospheric boilers. This Johnson Controls manufactured unit (frequently cross referenced as M35MB 2) functions by closing the flue pipe during the burner's off cycle, preventing standby heat loss through the chimney. It features a high temp polymer construction and a robust motor actuated blade