Service Manual
2Maintenance
Maintenance and annual startup
Table 2A Service and Maintenance Schedules
Service technician
(see the following pages for instructions)
General:
•Address reported problems
•Inspect interior; clean and vacuum if necessary;
•Clean condensate trap and fill with fresh water
•Check for leaks (water, gas, flue, condensate)
•Verify flue and air lines in good condition and sealed tight
UP | •Check | system water pressure/system | ||
| ||||
START- | piping/expansion tank |
| ||
• Check control settings |
| |||
• Check ignition and flame sense |
| |||
ANNUAL | electrodes (sand off any deposits; clean | |||
and reposition) |
|
| ||
|
|
| ||
| • Check wiring and connections |
| ||
| • Perform | checkout | and | |
| performance verification per Section 10 | |||
| in the Knight XL Installation and | |||
| Operation Manual. |
|
| |
| • Flame inspection (stable, uniform) | |||
| • Flame signal (at least 10 microamps at | |||
| high fire) |
|
| |
| • Clean | the heat | exchanger | if flue |
| temperature is more than 54°F (30°C) | |||
| above return water temperature. |
| ||
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 for
instructions)
| • Check boiler area | |
Daily | • Check pressure/temperature | |
| gauge | |
|
| |
| • Check vent piping | |
| • Check air piping | |
Monthly | • Check air and vent termination | |
| ||
| screens | |
| • Check relief valve | |
| • Check condensate drain system | |
| • Check automatic air vents | |
|
| |
Periodically | •Test low water cutoff (if used) | |
| ||
| • Reset button (low water cutoff) | |
|
| |
Every | • Check boiler piping (gas and | |
water) for leaks | ||
6 months | ||
| ||
| • Operate relief valve | |
|
| |
End | •Shut boiler down (unless boiler | |
of season | used for domestic hot water) | |
| ||
months |
| |
|
|
23 