DIRECT-VENT SEALED COMBUSTION BOILERS
2020-4-29 · D. Clearance from hot water pipes shall be 1 inch**. ** At points where hot water pipes emerge from a floor, wall or ceiling, the clearance at the opening through the finished floor boards or wall shall be covered with a plate of uncombustible material. SAFETY KEEP THE BOILER AREA CLEAR AND FREE FROM COM-BUSTIBLE MATERIALS, GASOLINE AND OTHER FLAM-
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