Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400 www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
27
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If the heater is installed less than three (3) feet above the sur-
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adequate back pressure at the heater to operate the pressure safety
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If the heater is installed more than three (3) feet above the surface
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For installation below the pool/spa surface, refer to Section III.
Figure 17: Typical plumbing to pool
Figure 18: Multiple heater system
Figure 20: Automatic chlorinator
Figure 19: Heater installation
above pool/spa
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If used, a chlorinator must be installed downstream from the
heater in the pool return line and at a lower elevation than the heater
as shown in Figure 20. Install a separate positive seal corrosion
resistant check valve between the heater outlet and the chlorinator to
prevent highly concentrated sanitizers from backsiphoning into the
heater. Backsiphoning usually occurs when the pump is shut off and
a pressure differential is created.
Figure 17 illustrates a typical pool piping diagram and layout for the pool equipment.
Figure 18 illustrates a multiple heater installation for very large pools with and without a manual
bypass valve.
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