1&( & GAS-FIRED Models STEAM BOILERS
2017-5-4 · Boiler is designed for use in closed heating systems where all steam is returned as condensate and make-up water is minimal. Boiler is not designed for or intended for use in open systems using 100% make-up water. 1. Prior to Installation • Verify correct boiler for type of gas being used natural or propane. See Rating Plate.
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