Cleaning of burners, Caution – Reznor R6GI Unit Installation Manual User Manual
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10. Remove the piping between the gas valve and the
ground-joint union, if necessary.
11. Carefully remove the four screws inside the burner
box (2 at each end), securing the complete burner
box assembly to the heat exchanger panel as shown
in
. BE EXTREMELY CAREFUL
NOT TO DAMAGE THE IGNITOR WHILE REMOVING
THE BURNER ASSEMBLY.
NOTE: The burner box may have hooks near the top
on both ends. To remove this type of burner box, lift
the burner box upwards and then remove the box from
the unit.
12. Remove the screw securing the NOx baffle retainer
clip to the heat exchanger panel, then pull the baffle
straight forward to remove. Repeat these steps for
each additional tube assembly. Keep components for
reuse aftercleaning.
13. Attach a round wire brush to a length of high grade
stainless steel cable, such as drain clean-out cable.
Attach the other end of the spring cable to a variable
speed reversible drill. Slowly insert and rotate the cable
into the top portion of the heat exchanger. Operate the
drill alternating between forward and reverse, working
the cable in and out several times to obtain sufficient
cleaning. Repeat this process at each exchanger tube.
14. Remove all loosened debris from the heat exchanger
tubes using high pressure air and vacuum cleaner.
15. Using a light, check the condition of the upper and
lower sections of the heat exchanger tube.
16. Inspect the burners and if necessary, clean them
carefully with a soft wire brush and/or the nozzle of a
vacuum cleaner. DO NOT DAMAGE THE IGNITOR OR
FLAME SENSOR WHILE CLEANING THE BURNER.
17. Reinstall the burner box assembly using the four
screws removed in Step 13.
18. Reconnect the wires to the flame roll-out switch, flame
sensor, and ignitor removed earlier in step 13.
19. Reinstall the collector box and combustion motor
removed earlier in steps 7 & 8. Make sure the collector
pan gasket seals the perimeter of the collector box
when attaching it to the heat exchanger mounting
panel and the combustion motor housing gasket is
correctly positioned when reattaching the 4 nuts.
20. Reconnect the gas piping to the gas valve inlet.
21. Reconnect the wires to the gas valve terminals.
22. After re-installing the gas valve/manifold assembly,
inspect the alignment of the burners with the heat
exchanger tubes. The center of the burners should
be aligned with the center of the tubes.
23. Follow the operating instructions found on the right
side of the door and in the User’s Manual to return
the unit to operation.
Cleaning of Burners
If the burners require cleaning, follow the steps below.
1. Shut off the gas supply to the unit either at the meter
or at a manual valve in the supply piping.
2. Turn off all power to the unit and set the thermostat to
the lowest temperature setting.
3. Remove the louvered control access panel from the
unit.
4. Turn the gas control knob to the OFF position. See
for gas valve shut off instructions.
5. Disconnect the wires from the gas valve, ignitor, and
flame sensor.
CAUTION:
To prevent damage to the unit or internal
components, it is recommended that two
wrenches be used when loosening or tightening
nuts. Do not over tighten!
6. Using two wrenches, separate the ground-joint union
in the gas supply piping at the unit.
7. Remove the piping between the gas valve and the
ground-joint union (if applicable).
8. Carefully remove the four screws inside the burner
box (2 at each end), securing the complete burner
box assembly to the heat exchanger panel as shown
in
. BE EXTREMELY CAREFUL
NOT TO DAMAGE THE IGNITOR WHILE REMOVING
THE BURNER ASSEMBLY.
NOTE: The burner box may have hooks near the top
on both ends. To remove this type of burner box, lift
the burner box upwards and then remove the box
from the unit.
9. Inspect the burners for accumulated dust or debris. If
necessary carefully clean them with a soft wire brush
and a vacuum cleaner. DO NOT DAMAGE THE IGNITER
WHILE CLEANING THE BURNER.
10. Reinstall the burner box assembly using the 4 screws
removed in Step 13.
11. Reconnect the wires to the flame roll-out switch, flame
sensor, and ignitor removed earlier in step 13.
12. Reinstall the gas manifold assembly to the burner
assembly with the 4 screws, that were removed earlier
in step 8. NOTE: It is important that the center of the
orifices are aligned with the center of the burners.
13. Reconnect the gas piping to the gas valve inlet.
14. Reconnect the wires to the gas valve terminals.
15. After re-installing the gas valve/manifold assembly,
inspect the alignment of the burners with the heat
exchanger tubes. The center of the burners should
be aligned with the center of the tubes.
16. Follow the operating instructions found on the right
side of the door and in the User’s Manual to return
the unit to operation.