HTP ELP-199 - Manual (Page 75)

75
LP-294 REV. 2.20.14
4. Spray the coils with clear water, making sure to confine the spray to the area being cleaned (Try to avoid getting the back ceramic
wall of the boiler wet). Flush the combustion chamber with fresh water until it runs clear from the condensate line. At this point, the
boiler should be ready to be re-assembled.
a. Inspect gaskets.
b. Gently slide the burner assembly into the heat exchanger. Reattach the wire harness to the blower.
NOTE: This will be easier to accomplish before the burner assembly is fully reinstalled.
c. Re-install the burner assembly.
d. Replace and tighten the (6) 10MM nuts to the burner plate using staggered tightening sequence. (See Figure 31 for detail.)
d. Re-connect the gas flex hose with an adjustable wrench. Ensure the O-ring is in place.
e. Reconnect electrical connections from the gas valve, spark electrode, flame rectification probe, and combustion blower.
f. Reconnect the wire harness to the combustion blower motor. Reconnect the green thermocouple wire
to the control
board.
f. Turn the gas back on. (IMPORTANT: CHECK ALL CONNECTIONS FOR GAS LEAKS!)
g. Restore power to the boiler.
h. Disconnect the White/Black/Red/Blue PWM connector feed to the fan. The fan will run at high speed to dry the combustion
chamber out. It is recommended to wait 5 minutes before reconnecting the wire connector.
i. Reconnect condensate piping to the outside condensate connection.
j. Reconnect the thermostat wire leads, or turn up the thermostat to create a demand on the boiler. When boiler is lit, observe
operation and condensate flow from the boiler. Double check for any combustion or gas leaks.
If the boiler is operating properly, condensate is flowing normally, and the installation is leak free, combustion coil cleaning is complete.
Do not use solvents to clean any of the burner components. The components could be damaged, resulting in unreliable or unsafe
operation. Failure to do so could result in death or serious injury.