LP-517 Rev. 000 Rel. 019 Date 7.21.20
57
After the boiler has operated for 12 - 16 hours, the door will have to
be closed again to accommodate any burn-off of the organic starch
sealing rope. Retightening the door after 12 - 16 hours will ensure a
proper seal.
NOTE:
During initial start-up, the sealing rope may burn off. During
this period a burning smell may come from the boiler. This is normal
and will pass when the sealing rope has completed burning off.
It is important to ensure that the combustion chamber door is
properly sealed and installed. Failure to do so could result in a flue
gas leak, property damage, severe personal injury, or death.
C. Replacing the Door Seal
NOTE:
BEFORE replacing the door seal, ensure the door is completely
and properly shut as described in this manual. An improperly closed
door could lead to exhaust leaks.
1. Make sure power is turned off to the boiler.
2. Turn off and remove any piping and electrical connections
connected to the combustion system cabinet (gas pipe line, intake
pipe, etc.) that could hinder opening the boiler door.
3. Before opening the door, ensure you have personal protective
equipment (PPE) in place. Wear an N95 certified dust respirator, eye
protection, and gloves. Spray down the perimeter of the door to
avoid the formation of dust during the procedure.
Figure 35 - Personal Protective Equipment (PPE)
4. Use the handle to open the door. Open the door slowly to avoid
spreading of dust.
Figure 36 - Opening / Closing the Combustion Chamber Door
5. Gently remove the used seal. Take care not to damage the door’s
ceramic insulation.
6. Carefully wash out the seal pit and rebead with new high
temperature silicon (rated to at least 300
o
C).
Figure 37 - Removing the Combustion Chamber Door Seal
7. Replace the old seal with a new seal identical to the removed one.
The seal must be a little bit longer than the door diameter in order
to let the terminal sides remain compressed and ensure a tight seal.
Ensure the ends of the seal are covered with scotch tape to prevent
any fraying.
Figure 38 - Installing the Combustion Chamber Door Seal
Figure 39 - Meeting the Taped Ends of the Seal
9. Close the door. Verify that the boiler plate presses exactly in the
middle of the seal. It may be necessary to readjust the door joints due
to the new seal’s plasticity.
Figure 40 - Combustion Chamber Door With Installed Seal
8. Place the new seal on the fresh silicon bead starting at the 5 o’ clock
position and insert it into the seal pit following the door circumference.
Figure 41 - Closed Door with Properly Fitted Seal
D. Maintaining the Condensate System
1. Ensure the boiler is powered off and has had time to cool.
2. Remove the hose clamp attaching the condensate trap to the
condensate hose from the heat exchanger. Remove the clear plastic
hose from the hose barb. Remove the condensate hose clamp to detach
the condensate trap from the drain tube. Remove the condensate trap
from the boiler.
3. Remove the bottom cap from the condensate trap.
4. Flush trap with fresh water to remove debris from the trap.
NOTE:
Ensure the float moves freely within the trap. If the float does
not move, DO NOT reinstall the trap.
5. When the condensate trap is sufficiently clean, reinstall the bottom
cap on the trap.
NOTE:
Ensure all parts shown in Figure 29, Condensate Detail, are
installed with the condensate trap. If any parts are missing, DO NOT
reinstall the trap. Replace the entire assembly.