Igniter; Flame Sensor; Burner Orifices - Hayward H250FDN Service & Installation Manual

IGNITER:

Refer to Figure 0. To remove the igniter:
1. Turn pump, gas supply, and heater power "OFF".
. Remove the front access panel. It is secured with () screws.
. Remove the control box cover. It is secured with () screws.
. Disconnect the igniter wires from the ignition control board.
5. Pull the igniter wires out of the control box through the opening in the bottom.
. Remove the screws from the igniter access panel. Working from the underside of the panel, press the
bushing out of the hole in the sheet metal panel.
7. Slide the igniter wires through the slot on the panel and pull the panel free.
8. Remove the () screws that secure the igniter.
9. Pull the igniter straight back until it is free of the combustion chamber, then out of the air box.
10. Installation is the reverse of steps 1 – 9.
Figure 41: Flame sensor

FLAME SENSOR:

Refer to Figure 40. To remove the flame sensor:
1. Turn pump, gas supply, and heater power "OFF".
. Remove the front access panel ( screws).
3. Disconnect the wire from the flame sensor.
4. Remove the screw that secures the flame sensor to remove the sensor.
5. Replace the flame sensor by reversing steps 1 – 4.

BURNER ORIFICES:

Refer to Figure 0 as needed. To remove the igniter:
1. Turn pump, gas supply, and heater power "OFF".
. Disconnect the union joint in the gas supply piping outside the heater cabinet.
. Remove the front access panel. It is secured with () screws.
. Disconnect the wiring terminals from the gas valve.
5. Remove the gas manifold assembly. It is attached to the air box using () screws.
6. Remove the orifices using a 7/16" wrench.
7. After cleaning or replacing orifices re-install into the gas manifold pipe being careful not to cross-
thread or over tighten as a leak may result.
ATTENTION: Do not enlarge orifice holes.
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400 www.haywardpool.com
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