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Part 14 - Maintenance
8. Clean the combustion chamber by spraying water or solution
into the combustion assembly and monitor the ow through the
combustion system. Liquid should ow freely through each tube.
If there is an obstruction, increase the ow on the tube to force the
blockage out.
4. Verify and replace the other gaskets if they are damaged or showing
signs of deterioration.
5. Make sure that the burner is not damaged. Replace if necessary.
6. Reassemble the burner assembly.
7. Ensure the combustion assembly sealing ring is not damaged.
Replace if necessary.
8. Reinstall the two removed electrodes with the four removed screws.
9. Reassemble the combustion assembly and tighten the four screws.
10. Reconnect the gas line. Replace the sealing ring.
11. Reconnect the electrode electrical connections.
12. Reinstall the silencer.
Clean the Condensate Trap
1. Remove the condensate drain hose from the bottom of the boiler.
2. Working from below the
boiler, remove the siphon
cap retaining clip. Then
remove the siphon cap
by depressing the two (2)
lateral hinges (use a tool if
necessary).
3. Remove the cone and the
ball.
4. Clean each part.
5. When the condensate trap is
suciently clean, reassemble
in the reverse order.
NOTE: Ensure all parts shown in
Figure 87 are installed with the
boiler. If any parts are missing DO
NOT operate the boiler. Replace
the entire condensate trap
assembly.
Do not use solvents to clean any of the boiler components.
The components could be damaged, resulting in unreliable
or unsafe boiler operation, substantial property damage,
severe personal injury, or death.
Figure 85 - Remove the Electrodes
Failure to replace a damaged sealing ring will result in exhaust
gas leaks, substantial property damage, severe personal injury, or
death.
DANGER
WARNING
Take care when removing the condensate hose, as condensate
may escape. Failure to do so could result in property damage due
to leaks, personal injury, or death.
9. After all maintenance is complete, reinstall the combustion
assembly. Ensure all gaskets are installed and all components are
tightened properly.
10. Restore power and gas to the boiler. Restart the boiler. Check for
leaks in the combustion system. Observe operation for 5 to 10
minutes.
If boiler is operating properly, condensate is owing normally, and no
gas leaks are detected, combustion coil cleaning is complete.
Checking the Burner
While the combustion assembly is removed from the heat exchanger,
inspect the burner. Proceed as follows:
1. Unscrew the four screws securing the two electrodes to the burner
plate.
2. Remove the ceramic ber.
3. Remove the four screws and pull the burner toward you.
NOTE: Whenever replacing the burner, ALWAYS replace the burner
gasket.
Siphon Cap
Retaining Clip
Siphon Cap
Cone
Ball
Figure 86 - Disassembled Burner Assembly
WARNING
Protect the back wall insulation from water before
performing any cleaning. Failure to do so could result
in damage to the insulation, improper boiler operation,
personal injury, or death.
Figure 87 - Clean the Condensate Trap
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