Section Ii. Consumer Operation & Maintenance; Maintaining Proper Water Chemistry - Hayward H150FD Owner's Manual

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SECTION II. CONSUMER OPERATION & MAINTENANCE

MAINTAINING PROPER WATER CHEMISTRY

WARNING:
The heat exchanger in your Hayward pool heater is made from the highest quality of copper and nickel
(Cupronickel) materials. The premium materials and the exacting processes used in the manufacture of the
heat exchanger is state of the art in pool heater design and manufacture. Yet, it remains vital that the heat ex-
changer be protected from damaging or corrosive chemicals, insufficient water flow or improperly balanced
water chemistry. Heat exchanger damage or failure resulting from improper flow, improperly balanced pool
water or the improper addition of sanitizers into the water is NOT covered under the terms of your warranty.
The following factors are critical to heat exchanger protection. Follow these guidelines to help prevent
pre-mature damage or failure to your heater and heat exchanger.
1. WATER FLOW THROUGH HEATER
Water must be flowing through the heater at the minimum rated flow rate during operation. Check that
the pump is operating and the system is filled with water and purged of all air prior to starting the heater. The
minimum rated flow rates are listed in the installation manual on page 25. Some installations may require an
adjustment to the water pressure switch for proper low-flow protection. Test your system and if necessary,
adjust the water pressure switch as described in the installation manual on page 34.
2. POOL/SPA WATER CHEMISTRY
The chemistry balance and mineral content of swimming pool water changes daily due to the addition of
pool and sanitizing chemicals, bather loads, rain, runoff and the amount of sun - to name a few. Improper chem-
istry balance and mineral content can cause scaling and deposits to form on pool walls, in the filtration system,
in the heat exchanger tubes and additionally can promote corrosive action to all metals in the water path. Chang-
ing spa water regularly and maintaining the correct chemical balance in your pool/spa will keep the pool/spa
safe and sanitary, and will help protect the heat exchanger. Use a 4-way pool/spa water test kit to check your
water frequently (at least weekly). Use the following guidelines to help protect your heater's heat exchanger:
Chlorine
Bromine
pH
Total Alkalinity
Calcium Hardness
Salt
3. SKIMMER CHLORINATION
Placing chlorine or bromine tablets directly into the skimmer may result in high chemical concentrations
flowing through the heater. DO NOT place chlorine or bromine tablets in the skimmer.
Failure to Maintain Proper Water Chemistry May Cause
Premature Heat Exchanger Damage or Failure
Recommended
Level
1 - 3 ppm
hazy water, algea growth,
bacteria causing infections
2 - 4 ppm
corrosive to heat exchanger,
7.4 - 7.6
corrosive to heat exchanger,
80 - 120 ppm
200 - 400 ppm corrosive to heat exchanger
2700 - 3400 ppm poor salt chlorinator performance
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Effect of Low Levels
swimmer irritation, bleaching of clothes/hair,
swimmer irritation
large fluctuations in pH
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400
Effect of High Levels
corrosive to heat exchanger
cloudy water, scaling of heat exchanger,
reduced sanitizer effectiveness
scaling of heat exchanger
scaling of heat exchanger
corrosive to heat exchanger
www.haywardpool.com