Burner Inspection; Burner Removal - Hayward H250FDN Service & Installation Manual

BURNER INSPECTION AND CLEANING:
With the heater "ON", remove the front access panel and make a visual inspection of the main burners
through the sight glass (see Figure 38.) The main burner flames should be about ½" to 2" in height and should
not "lift" off the burner ports (see Figure 39).
A normal flame is blue, without yellow tips. yellow tips or a totally yellow or "lazy" flame may be an
indication of a fuel-rich mixture due to restricted air supply. Spider nests in the burner and/or gas orifices may
also cause yellow tips.
Figure 38: Sight glass location
Sight glass

BURNER REMOVAL:

Refer to Figure 0 as needed.
1. Turn pump, gas supply, and heater power
"OFF".
. Turn gas valve knob "OFF".
. Remove the front access panel. It is se-
cured
with () screws.
. Disconnect the union joint in the gas sup-
ply piping outside the heater cabinet.
5. Disconnect the wiring terminals from the
gas valve.
. Disconnect the wiring terminals from the
blower.
7. Remove the gas manifold assembly. It is
attached
to the air box using () screws.
8. Remove the screws from the igniter ac-
cess panel and pull it out of the way.
Do not disconnect the wires.
9. Remove the air box cover. Do not remove the blower from the air box cover.
10. Remove the () screws securing each burner to the combustion chamber front.
11. Pull the burners straight out of the heater.
Figure 39: Burner Flame characteristics
Figure 0: Removal of burner, gas valve, igniter,
& flame sensor
Gas
valve
Gas manifold with
burner orifices
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400
Flame sensor
Igniter
(under panel)
Igniter
access panel
Air box cover
www.haywardpool.com
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