(a) Hot water heaters in conjunction with storage tanks, whether integral or separate from the heater, shall be installed for each building of sufficient storage and recovery capacity to serve the hot water requirements for fixtures and other uses in the building based upon the anticipated usage.
(b) Gas-fired hot water heaters shall be AGA tested and labeled (refer to Appendix A). Electric and oil-fired hot water heaters shall be UL listed (refer to Appendix A) and bear the “UL” stamp and shall not be modified or jacketed so as to affect the UL or AGA ratings (refer to Appendix A).
(c) Safety devices for hot water heating units and hot water storage tanks shall be used in accordance with applicable provisions of the Ohio Basic Building Code (Plumbing), Section 4101:2-51-30 (refer to Appendix A).
(1) Pressure and temperature relief devices shall be installed at all required locations.
(2) Automatic controls are required to maintain the required water temperature in the storage tank on leaving the heater. Water temperature supplied to fixtures normally used by people shall be no higher than 140 degrees Fahrenheit.
(3) There shall be an automatic fuel shut-off in the event of flame or pilot failure.
(d) Tanks shall be marked and stamped where required in accordance with the Ohio Basic Building Code (Plumbing), Section 4101:2-51-31 (refer to Appendix A).
(1) Tanks shall be fabricated of materials suitable for hot water heating and storage and lined or otherwise protected to resist corrosion and calcification buildup.
(2) Tanks shall be insulated as provided in Section 1381.31.
(e) Hot water heaters and storage tanks which are installed in piping systems, or portions thereof, which do not provide for, or have capability of compensating for, thermal expansion, shall be equipped with adequate capacity expansion tanks to prevent excessive pressure from building up in the system or discharging the relief valves.
(f) In systems with hot water circulating pumps, the circulators, valves and piping shall be installed in accordance with the manufacturer's instructions and in a manner to maintain warm water throughout the hot water distribution system. The circulators shall be manufactured with materials suitable for the application.
(Ord. 1992-101. Passed 1-14-92.)