Hayward Universal H-Series Low NOx Service/Installation: H150FDN H200FDN H25 - Page 44

Igniter, Flame Sensor, Burner Orifices

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44 Igniter: Refer to Figures 31 and 37. To remove the igniter: 1. Turn pump, gas supply, and heater power "OFF". 2. Remove the front access panel. It is secured with (4) screws. 3. Remove the control box cover. It is secured with (2) screws. 4. 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. 6. 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 (2) 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. re 41: FlameFSiegnusorer 41: Flame sensor FLAME SENSOR: Refer to Figures 31 and 37. To remove the flame sensor: 1. Turn pump, gas supply, and heater power "OFF". 2. Remove the front access panel (4 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 Figures 31 and 37 as needed. To remove the igniter: 1. Turn pump, gas supply, and heater power "OFF". 2. Disconnect the union joint in the gas supply piping outside the heater cabinet. 3. Remove the front access panel. It is secured with (4) screws. 4. Disconnect the wiring terminals from the gas valve. 5. Remove the gas manifold assembly. It is attached to the air box using (4) 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 crossthread 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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Pomona, CA Clemmons, NC Nashville, TN
Tel: 908-351-5400
www.haywardpool.com
USE ONLY HAYWARD GENUINE REPLACEMENT PARTS
44
IGNITER:
Refer to Figures 31 and 37. To remove the igniter:
1. Turn pump, gas supply, and heater power “OFF”.
2. Remove the front access panel. It is secured with (4) screws.
3. Remove the control box cover. It is secured with (2) screws.
4. 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.
6. 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 (2) 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 Figures 31 and 37. To remove the flame sensor:
1. Turn pump, gas supply, and heater power “OFF”.
2. Remove the front access panel (4 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 Figures 31 and 37 as needed. To remove the igniter:
1. Turn pump, gas supply, and heater power “OFF”.
2. Disconnect the union joint in the gas supply piping outside the heater cabinet.
3. Remove the front access panel. It is secured with (4) screws.
4. Disconnect the wiring terminals from the gas valve.
5. Remove the gas manifold assembly. It is attached to the air box using (4) 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.