We recommend bypassing the heat exchanger while adjusting water chemistry. Stabilize chemistry to a pH of 7.2 - 7.8, with chlorine residual at 1.0 to 3.0 ppm. Damage to the heat exchanger due to improper water chemistry is not covered under the warranty. MAXI-FLO SWIMMING POOL HEAT EXCHANGERS Model WMPH-95 PVC Stainless Steel (minimum 10" long) Heating zone supply CD Щ Heating zone return c 0) Stainless Steel (minimum 10" long) ($ To the pool (5) PVC h® 1. Maxi-Flo Heat Exch