Section 3-21 - Heaters and Boilers, Installation and Testing (a) All heating equipment using either fossil fuels such as natural gas, liquid petroleum gas, No. 2 fuel oil, or electric heating equipment for heating pool water for pools and spas shall: - (i) Comply with ANSI Z21.56, Standards for Gas-Fired Heaters; or
- (ii) Comply with UL 1261, Standard for Electric Heaters or UL 559, Standards for Heat Pumps.
- (iii) Be installed on a surface with sufficient structural strength to support the heater when it is full of water and operating;
- (iv) Be level and stationary after plumbing, gas and/or electrical connections are completed.
- (A) Heaters requiring a non-combustible surface per the manufacturer shall be placed on a concrete or other acceptable surface in accordance with ANSI Z21.56, Standards for Gas-Fired Heaters.
- (v) Be installed and maintained with at least the minimum clearances to combustibles for which the heater has been tested as specified by the manufacturer;
- (vi) Have adequate ventilation in order to ensure proper operation; and (vii) Be grounded and bonded to reduce electrical shock hazard.
(b) Heaters with electronic ignition shall be wired in series with the circulation pump to ensure they will not turn on when the pump is off.
(c) Water flow through the heater, bypass plumbing, cross-connection protection, and heat sinks shall be in accordance with the manufacturer's specifications and with the requirements of state and/or local regulatory authorities.
010-3 Wyo. Code R. § 3-21