Hayward Universal H-Series Low NOx Service/Installation: H150FDN H200FDN H25 - Page 40

Iv. Qualified Technician - Maintenance & Servicing, General, Maintenance, Control Access

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40 Section IV. Qualified Technician - Maintenance & Servicing General: ATTENTION: Only qualified service technicians, with appropriate test equipment, should be allowed to service the heater. Bear in mind that all of the components that comprise the system have an effect on heater operation. Before proceeding with heater related troubleshooting tips covered in Section VII, be certain that the pump is operating correctly, the filters and strainers are not blocked, the valves in the piping are properly positioned, and the time clocks are properly set. WARNING: Explosion Hazard Do not attempt to repair any components of this heater. Do not modify the heater in any manner. To do so may result in a malfunction that could result in death, personal injury, or property damage. Check with the consumer to see if any part of the heater has been under water. Replace any part of the control system and any gas control that has been under water. Maintenance: The following inspection procedures are recommended to be performed as part of annual heater maintenance and to ensure safe operation. 1. External heat exchanger 2. Internal heat exchanger 3. Main burner flame patterns 4. Main burner orifices 5. Operating controls Inspection procedures are covered below. Some of the procedures will require disconnecting and removing wires in the control compartment. See "Control access". Control access: To access the operating controls as shown in Figure 37: 1. Remove the (4) screws from the front access panel. 2. Label all wires prior to disconnection when servicing controls. 3. If there are questions when reconnecting the wires, refer to the Figure 37: Panel removal for various maintenance procedures. (Note: not all panels need be removed for every procedure, follow the written instructions in Section VI.) wiring diagram in Figure 28. 4. Verify proper operation after Rain shield assembly Top panel Flue cover servicing. 5. After service is complete, as- sembly is the reverse of Steps 1-2 above. Flue collector panel (2) Heat exchanger Water header Blank side trim panel Header side trim panel End cap End cap Front access panel Side jacket Control boards 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
40
SECTION IV. QUALIFIED TECHNICIAN – MAINTENANCE & SERVICING
GENERAL:
ATTENTION:
Only qualified service technicians, with appropriate test equipment, should be allowed
to service the heater. Bear in mind that all of the components that comprise the system have an effect
on heater operation. Before proceeding with heater related troubleshooting tips covered in Section VII,
be certain that the pump is operating correctly, the filters and strainers are not blocked, the valves in the
piping are properly positioned, and the time clocks are properly set.
WARNING:
EXPLOSION HAZARD
Do not attempt to repair any components of
this heater. Do not modify the heater in any manner. To do so may result in a mal-
function that could result in death, personal injury, or property damage. Check with
the consumer to see if any part of the heater has been under water. Replace any part
of the control system and any gas control that has been under water.
MAINTENANCE:
The following inspection procedures are recommended to be performed as part of annual heater mainte-
nance and to ensure safe operation.
1. External heat exchanger
2. Internal heat exchanger
3. Main burner flame patterns
4. Main burner orifices
5. Operating controls
Inspection procedures are covered below. Some of the procedures will require disconnecting and remov-
ing wires in the control compartment. See “Control access”.
CONTROL ACCESS:
To access the operating controls as shown in Figure 37:
1. Remove the (4) screws from the front access panel.
2. Label all wires prior to discon-
nection when servicing controls.
3. If there are questions when re-
connecting the wires, refer to the
wiring diagram in Figure 28.
4. Verify proper operation after
servicing.
5. After service is complete, as-
sembly is the reverse of Steps 1-2
above.
Figure 37: Panel removal for various maintenance procedures.
(Note: not all panels need be removed for every procedure, follow
the written instructions in Section VI.)
Top panel
Flue cover
Heat exchanger
Water header
Header side
trim panel
End cap
Side jacket
Control boards
Rain shield
assembly
Flue collector
panel (2)
Blank side
trim panel
End cap
Front access
panel