Patterson-Kelley MACH C-1500H Installation & Owner's Manual page 69

Do not attempt to wash the burner while installed in the boiler. When cleaning the burner, use a mild
detergent such as Simple Green
14. Now that the burner is removed, the burner hole is open providing access to the combustion
chamber.
15. Use a pressurized water hose with control nozzle. Begin by spraying just a few seconds of
water into the combustion chamber and then close off the nozzle.
16. Walk around to the rear of the boiler and ensure the wash water is draining into the temporary
drain hose off the condensate drain. Adjust the temporary drain hose if needed to help drain the
wash water from the boiler.
17. After inspecting the temporary drain hose, continue washing the internal combustion chamber
with pressurized water for several minutes. Spray as much of the internal surface area as
possible.
Be very careful when cleaning to avoid spraying any of the electrical or control components.
18. After several minutes of washing, turn off hose and allow all the wash water to drain from the
boiler.
19. Move to the right hand side of the boiler, and remove one of the rectangular fireside inspection
covers in the middle of the boiler by loosening the six M6 nuts.
20. If there is a noticeable accumulation of debris on the fireside of the heat exchanger behind the
inspection cover, it may be necessary to wash the fireside for several additional minutes.
Reseal the inspection cover and continue washing through the burner hole.
21. If the accumulation of debris on the fireside of the heat exchanger requires additional cleaning,
use a serrated cleaning tool which is available from Patterson-Kelley.
22. Reconnect the condensate tubing to the condensate neutralization tank.
23. CAREFULLY insert burner into the burner hole. Support the burner so it remains horizontal
while inserting.
24. Once the burner is installed, reinstall the gasket over the burner's flange.
If the original gasket is torn or damaged, replace with a new gasket!
25. Reinstall the angled burner hood casting and tighten the M12 flanged nuts.
26. Once secured to the burner flange, reconnect the combustion blower flange to the air/gas mixer
head flange with the six M8 screws. Ensure the O-ring between the combustion blower flange
and air/gas mixer head is intact.
27. Reinstall the ignition electrode assembly (if previously removed).
28. Reinstall the flame/ionization rod assembly (if previously removed).
29. Reinstall the wires/cables to the ignition electrode and flame/ionization rod.
30. Double check the tightness of all bolted joints.
Revised: January 3, 2020
Released: January 3, 2020
NOTE
®
to help loosen built-up debris trapped in the burner mesh.
NOTE
 Patterson-Kelley 2020
All Rights Reserved.
®
P-K MACH
Technical Service 1.877.728.5351
1004905981 P-K MACH C1500H-C4000 Installation and
Owners Manual (Rev F Jan-2020).docx
Gas Fired Boiler
Page 64