Weil-McLain 78 Boiler Maximum firing rate & residential home heating contracts?

Old 10-28-14, 01:13 AM
Join Date: Mar 2006
Location: Wet side of Washington state.
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Even with a flame retention head you will get a better burn with a refractory "ignition tile" than simply burning into a large furnace. I wouldn't dream of using a significantly smaller oil burner in that boiler without either a refractory chamber or at the least an ignition tile.

Gas...different story. Gas-fired commercial boilers often have a ten-to-one (or better) turn down ratio.

Mike, thanks for the link. It appears that the thermostatic valves for one-pipe systems are actually thermostatic VENT valves. I'm not sure how well they would work with 10 psi steam. The thermostatic valves for two-pipe systems actually operate on the steam inlet to the radiators.

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