Section 4-11 - Chemical Feeders (a) Chemical feeders shall: - (i) Be installed, maintained and operated in accordance with the manufacturer's specifications;
- (ii) Be installed:
- (A) So the gas or solution is introduced downstream from the filter and heater; and
- (B) If possible, at a point lower than the heater outlet fitting or according to the manufacturer's instructions.
- (iii) Incorporate failure-proof features so the chemical cannot feed into:
- (A) The pool, spa or similar installation;
- (C) The water supply system; or
- (D) The pool, spa and similar installation enclosure if equipment or power fails.
- (I) Chemical feed pumps shall be wired so they cannot operate unless there is adequate return flow to properly disperse the chemical throughout the pool, spa or similar installation as designed.
- (iv) Be regulated to ensure constant feed with varying supply or back pressure;
- (v) Be designed to prevent siphoning from the re-circulation system to the solution container and to prevent siphoning of the chemical solution into the pool, spa or similar installation; and
- (vi) Have a graduated and clearly marked dosage adjustment to provide flows from full capacity to ten (10) percent of such capacity.
- (A) The device shall be capable of continuous delivery within ten (10) percent of the dosage at any setting; and
- (B) Be provided with make-up water supply lines to chemical feeder solution tanks that have an air gap or other acceptable cross-connection control.
010-4 Wyo. Code R. § 4-11