Hayward Universal H-Series Owners Manual: H150FDN H200FDN H250FDN H300FDN H350 - Page 8

8 SECTION II. CONSUMER OPERATION & MAINTENANCE MAINTAINING PROPER WATER CHEMISTRY WARNING: Failure to Maintain Proper Water Chemistry May Cause Premature Heat Exchanger Damage or Failure 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 exchanger 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 chemistry 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. Changing 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 Recommended Level 1 - 3 ppm 2 - 4 ppm 7.4 - 7.6 80 - 120 ppm 200 - 400 ppm Effect of Low Levels hazy water, algea growth, bacteria causing infections corrosive to heat exchanger, swimmer irritation corrosive to heat exchanger, large fluctuations in pH corrosive to heat exchanger Effect of High Levels swimmer irritation, bleaching of clothes/hair, corrosive to heat exchanger cloudy water, scaling of heat exchanger, reduced sanitizer effectiveness scaling of heat exchanger scaling of heat exchanger 2700 - 5000 ppm poor salt chlorinator performance corrosive to heat exchanger 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. USE ONLY HAYWARD GENUINE REPLACEMENT PARTS Pomona, CA Clemmons, NC Nashville,TN Tel: 908-351-5400 www.haywardpool.com