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AUTOMATIC CHLORINATORS AND CHEMICAL FEEDERS
All chemicals must be introduced and completely diluted into the pool or spa water before being circulated through the
heater. Do not place chlorine tablets or bromine sticks in the skimmer. High chemical concentrations will result when the
pump is not running (i.e. overnight).
Chlorinators must feed downstream of the heater and have an anti-siphoning device to prevent chemical backup into the
heater when the pump is shut off.
NOTE: High chemical concentrates from feeders and chlorinators that are out of adjustment will cause very rapid
corrosion to the heat exchanger in the heater. Such damage is not covered under the warranty.
WINTERIZING YOUR HEATER
When heaters installed outdoors in freezing climate areas are to be shut down for the winter, please observe the following
step-by-step procedure:
1. Turn off manual main gas and main gas shut off. Remove the drain plug or open the drain cock located on the
bottom header.
SPA WATER CHEMISTRY
NOTE: Chemical imbalance can cause severe damage to your heater and associated equipment. Maintain your water
pH between 7.4 and 7.8 and total alkalinity between 100 and 150 p.p.m. If the mineral content and dissolved solids in the
water become too high, scale forms inside the heat exchanger tubes, reducing heater efficiency and also damaging the
heater. If the pH drops below 7.2, the heater will be severely damaged.
NOTE: Heat exchanger damage resulting from chemical imbalance is not covered under the warranty.
SINGLE POOL HEATER APPLICATION
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Fig. #9225