Williamson-Thermoflo FreeStyle 2 Series Manual page 114

FreeStyle
Series 2 wall mount gas-fired water boiler — Boiler Manual
38 Maintenance
Inspect and clean the heat exchanger
Wait until heat exchanger/boiler is cooled down
severe injury.
1. See Figures 149 and 153.
2. Use a 10mm wrench or socket to remove the five (5) nuts that
secure the burner cover plate to the heat exchanger.
3. Remove the heat exchanger cover plate, gasket, burner and
its gasket.
4.
Figure 149
5. Remove ignitor.
6.
module and then remove the screw securing it to the bracket.
7. Use a vacuum cleaner to remove any accumulation on the
tory that may have dropped into the exchanger.
Figure 150
114
(continued)
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8.
Figure 151
9.
10. Spray clean water, to finish flushing combustion chamber.
Figure 152
11. Dry with a clean rag.
12. Reinstall the spring.
13. Reinstall the burner, the burner gasket and ignitor.
14. Reinstall exchanger cover plate and gasket to heat
exchanger.
15.
nuts using a torque wrench. The nuts must be secure, but
the torque must not exceed 20 inch-pounds
ting the boiler back into service. See page 75 and all
soap suds leak test on all interior and exterior gas
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Part number 550-142-950/0919