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Supply quantities and model numbers as indicated on the plumbing schedule. Gas and Electrical Consumption The water heater will operate at a minimum of 83% thermal efficiency when tested to ANSI Z21.10.3. The water heater will comply with paragraph 7.2.4.4, the thermal efficiency, the standby loss, and all other requirements of ASHRAE 90.1-1999. Pressure Vessel and Heating Surfaces The water heater will be constructed and stamped in accordance with Section IV, Part HLW of the ASME code. The stor