Pennsylvania Code
Title 34 - LABOR AND INDUSTRY
Part I - Department of Labor and Industry
Chapter 3a - BOILER AND UNFIRED PRESSURE VESSEL REGULATIONS
Subchapter H - SPECIAL INSTALLATIONS
Section 3a.163 - Fired coil water heaters and instantaneous water heaters
Current through Register Vol. 54, No. 38, September 21, 2024
(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).