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Installation & Operation Manual
12 Maintenance
Maintenance and annual startup
Table 12A Service and Maintenance Schedules
Service technician
(see the following pages for instructions)
| General: |
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| • Address reported problems |
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| • Inspect interior; clean and vacuum if | |||||||
| necessary; |
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| • Clean condensate trap and fill with fresh | |||||||
| water |
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| • Check | for | leaks | (water, gas, | flue, | |||
| condensate) |
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| • Verify flue and air lines in good condition | |||||||
UP | and sealed tight |
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• Check | system water | pressure/system | ||||||
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START- | piping/expansion tank |
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• Check control settings |
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• Check | ignition | and | flame | sense | ||||
ANNUAL | electrodes (sand off any deposits; clean | |||||||
• Perform | checkout | and | ||||||
| and reposition) |
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| • Check wiring and connections |
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| performance verification per Section 10. | |||||||
| • Flame inspection (stable, uniform) |
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| • Flame signal (at least 10 microamps at | |||||||
| high fire) |
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| • Clean | the | heat | exchanger | if | flue | ||
| temperature is more than 54°F (30°C) | |||||||
| above return water temperature. |
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If combustion or performance indicate need:
•Clean heat exchanger
•Remove and clean burner using compressed air only
•Clean the blower wheel
Owner maintenance
(see the Knight XL User’s Information Manual forinstructions)• Check boiler area
Daily |
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| • Check pressure/temperature | ||
| gauge |
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| • Check vent piping |
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| • Check air piping |
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Monthly | • Check air and vent termination | ||
| screens |
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| • Check relief valve |
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| • Check condensate drain system | ||
| • Check air vents |
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Periodically | •Test low water cutoff (if used) | ||
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| • Reset button (low water cutoff) | ||
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| • Check boiler piping (gas | and | |
Every | water) for leaks |
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6 months |
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| • Operate relief valve |
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End | •Shut boiler down (unless | boiler | |
of season | |||
used for domestic hot water) |
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months |
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