This drawing is the heating construction drawing of two 84KW gas boilers, including the water system diagram of the boiler room, the boiler room design and construction instructions, the boiler room pipe ventilation plan, section, the boiler room equipment foundation plan, etc. 1. The boiler room is equipped with two 84KW gas boilers for heating in winter, the boiler outlet temperature is 95 ° C, the return water temperature is 70 ° C, and the boiler feed water