Weil McLain Tankless Coils Frequently Asked Questions
Which weil mclain boilers do these tankless coils fit?
Replacement coils are available for a wide range of Weil McLain series, including 65, 66, 68, EG, 62, 72-73, 76-86-88, 80-78, 82-84, 92-94-K, CGT, H-Gas, OB15, OB18, Gold, and LG boilers.
How do I clean a hot water coil in a boiler?
Isolate the coil, then flush a descaling solution through the domestic water side to remove mineral buildup. A coil that is heavily scaled or leaking usually needs replacing instead. Follow the boiler manufacturer's instructions, or use a heating technician.
How does a weil mclain tankless water heater work?
A tankless coil sits inside the boiler and heats domestic water on demand as it flows through. Hot water comes from the boiler's heat rather than a separate tank.
How do I match a replacement weil mclain tankless coil?
Match the boiler series first, then check the coil plate size and bolt hole count, for example 5-1/4" x 10-1/8" with 8 bolt holes. Some coils, such as the 62 Series steam coil, also come in different flow rates of 5, 6, or 8 GPM.
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