Installation Above Pool Surface; Chlorinator/Chemical Feeder - Hayward H150FD Service & Installation Manual

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.
Figure 17: Typical plumbing to pool
INSTALLATION ABOVE POOL/SPA SURFACE:
If the heater is installed less than three (3) feet above the sur-
adequate back pressure at the heater to operate the pressure safety
If the heater is installed more than three (3) feet above the surface
For installation below the
AUTOMATIC CHLORINATORS AND
CHEMICAL FEEDERS:
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
heater. Backsiphoning usually occurs when the pump is shut off and
a pressure differential is created.
pool/spa surface, refer to Section III.
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Figure 18: Multiple heater system
Figure 19: Heater installation
above pool/spa
Figure 20: Automatic chlorinator
into the
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400 www.haywardpool.com
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