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Part number 550-100-325/0419
112
AquaBalance
®
Series 2 Wall Mount Gas-fired Water Boiler – Boiler Manual
38 Maintenance (continued)
Figure 142
2. Remove two (2) Phillips head screws securing the ignition
electrode to the boiler heat exchanger.
3. Carefully slide the igniter out of its mounting slot.
Use care when removing and handling igniter.
Igniter is very brittle and can break if not handled
carefully.
4. Remove and inspect the ignitor gasket. Replace with new if
necessary.
5. Inspect the ignitor ceramic and electrodes, 5/32” gap and not
bent or disfigured/warped.
6. Remove any white oxides accumulated on the ignition elec-
trode using steel wool. If the ignition electrode cannot be
cleaned satisfactorily, replace ignitor. If the igniter ceramic
is cracked or damaged, replace.
7. Reinstall ignition electrode, making sure gasket is in good
condition and correctly positioned.
— Use a torque wrench when tight-
ening the two (2) ignition electrode retainer screws.
DO NOT exceed 20 inch-pounds.
8. Re-attach the ground wire to the electrode assembly.
9. Re-connect ignition wire in the back of control module.
Figure 143
Inspect and clean the burner
Wait until heat exchanger/boiler is cooled down
before proceeding. Failure to do so can cause
severe injury.
1. See Figures 144 and 149, for removing heat exchanger
cover plate to access burner.
2. Use a 10mm wrench or socket to remove the five (5) nuts
that secure the heat exchanger cover plate to the heat
exchanger.
Figure 144
Figure 145
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