Weil-McLain Boiler Installation & Piping

A boiler heat exchanger cannot function properly if piping violates hydraulic principles. On steam boilers, undersized risers cause boiler water to lift into steam mains, creating banging pipes, spitting radiator vents, and fluctuating waterlines. On condensing boilers, near-boiler piping must decouple boiler loop flow from zone loop flow via primary-secondary piping or a hydraulic separator to prevent thermal shock and ensure adequate velocity.

When pipes and fittings are threaded, pipe cutting oils and thread sealants coat the metal. In a steam boiler, these oils float on the boiling water, forming soapy bubbles that trap steam and push water up into the house. We pipe a temporary skim line into the Weil-McLain factory skim tap port and boil the system slowly for several hours to float away all oils, leaving clean, calm boiler water.

Yes. Connecting a Weil-McLain Aqua Plus indirect-fired water heater to a new boiler delivers virtually limitless domestic hot water at high recovery rates. The boiler heats the tank through an internal coil, which is far more efficient and longer-lasting than a standalone gas tank.

Our phone consultations, site layout evaluations, and written installation estimates are handled promptly by our dispatch desk.

We assess chimney flues for natural draft cast-iron boilers, installing stainless steel chimney liners when converting from oil to gas. For condensing units, we run dedicated PVC, CPVC, or polypropylene intake and exhaust pipes to the exterior according to local building code and manufacturer clearance distances.