Plumbing · P-VH7FR

High Efficiency Gas Fired Water Heater

Materials

Steel

Elements

Walls Floors / Slabs Drainage Anchors / Embeds Connections / Plates

Connections

Base Plate / Anchorage Bolted Connection

About this detail

The water heater is secured to the wall using two 1-inch by 18-gauge straps fastened with number 10 by 2-1/2-inch anchor bolts. The unit sits inside a 6-inch deep, 22-gauge galvanized steel drain pan with hemmed edges and soldered watertight joints, connected to a 1-inch drain line leading to a floor drain or janitor sink. The gas supply includes a lubricated gas cock, a 6-inch dirt leg, an appliance pressure regulator with test tees, and a unit gas train furnished with the water heater. The water piping features an ASME-rated temperature and pressure relief valve piped full size to a floor drain or pan, a thermal expansion absorber model ST-5, a thermometer, heat traps, check valves, ball valves, unions, a 1-1/4-inch hot water circulation pump, and dielectric unions at the tank connections. Combustion air is supplied via 3-inch Schedule 40 PVC connected to a concentric kit or manufacturer recommendation.

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