Specifications

17
VENT SIZING - AREA MUST BE THE SAME AS OR GREATER THAN THE BOILER BREECHING
(Smoke outlet). A BAROMETRIC DAMPER MAY BE REQUIRED ON INSTALLATIONS WITH A
HIGH DRAFT CONDITION.
FAULTY BOILER BURNER OPERATION
1. IF IMPROPER VENT IS SUSPECTED, REMOVE PIPE AT BREECHING AND OPERATE
BOILER. THIS WILL DETERMINE IF EXCESSIVE DOWN DRAFT, BLOCKED OR
RESTRICTED FLUE, ETC. IS CAUSING PROBLEM.
2. IF USING TYPE SHOWN IN A. ABOVE, BE SURE CAP IS RAISED SUFFICIENTLY
ABOVE MAIN PIPE TO ALLOW FLUE GASES TO VENT UNIMPEDED.
3. A POPULAR TYPE CAP IS SHOWN IN B.
4. THE TEE IS FREQUENTLY USED AS SHOWN IN C.
5. D. AND E. SHOULD NOT BE USED DUE TO POSSIBLE FLUCTUATIONS IN BACK
PRESSURE.