GWB9 GAS-FIRED, DIRECT VENT, CONDENSING, HOT
2018-9-21u2002·u2002These low pressure gas-fired hot water boilers are design certi-fied by CSA International for use with natural and propane gases. The boilers are constructed and hydrostatically tested for a maximum working pressure of 50 psig (pounds per square inch gage) in accordance with A.S.M.E. (American Society of
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