Hayward H150FD Service & Installation Manual

Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400 www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
35
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achieved by adjusting the gas valve regula-
tor, the installer must contact the gas sup-
plier and request that the inlet pressure to
the heater be set to within the gas pressure
range shown in Table 15.
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explosion resulting in severe injury or death.
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The pressure switch is preset at the factory for most typical, deck level installations. When the heater is located
above or below the level of the pool or spa, the pressure switch may require adjustment to compensate for the change
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For Installations with Heater Above Water Level:
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least the rated minimum (see Table 14).
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4. If the heater does not light, adjust the pressure switch by turning the adjustment knob on the pressure
switch counter-clockwise, until the heater lights. Turning the adjustment knob counterclockwise
decreases the pressure needed to close the switch.
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heater should turn off immediately when the pump is turned off. Never allow the heater to operate with
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For Installations with Heater Below Water Level:
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least the rated minimum (see Table 14).
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4. Turn the adjustment knob on the pressure switch clockwise, until the heater turns off, then turn the knob
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increases the pressure needed to close the switch.
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heater should turn off immediately when the pump is turned off. Never allow the heater to operate with
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In a few cases the pressure from a two-speed pump is below the 1- pound minimum required to operate the wa-
ter pressure switch on the heater. This is apparent when the pressure switch cannot be further adjusted. In these cases
the pump must be run at high speed to operate the heater. If the pump and piping arrangement are such that the re-
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Pressure, in. w.c.
FDN FDP
Fuel
Natural Propane
Manifold
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Inlet, minimum
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Inlet, maximum
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Hayward H150FD Specifications

General

Brand	Hayward
Model	H150FD
Category	Swimming Pool Heater
Language	English