Current through Register Vol. 54, No. 50, December 14, 2024
Section 3a.163 - Fired coil water heaters and instantaneous water heaters(a) A fired coil water heater and instantaneous water heater shall be installed in accordance with ASME Code, section IV, articles HLW 700, HLW 800 and HG 614.(b) A storage vessel may be used with a fired coil water heater and instantaneous water heater, if its controls comply with ASME CSD1, and it meets the ASME Code over-pressure protection requirements. The vessel must be ASME Code constructed if the Btu input exceeds 200,000 Btu.(c) Temperature controls must be designed to not exceed 210°F.(d) Inspection of fired coil water heaters and instantaneous water heaters shall be performed in accordance with § 3a.111(4) (relating to field inspections).