AERCO KC Series Equipped with C-More Controller for Massachusetts Only - Manual (Page 45)

MAINTENANCE
6-1
SECTION 6 – MAINTENANCE
6.1 MAINTENANCE SCHEDULE
The KC1000 Heater requires regular routine maintenance to maintain efficiency and reliability. For best
operation and life of the unit, the following routine maintenance procedures should be performed in the
time periods specified in Table 6-1.
Appendix I contains recommended spare parts lists for maintenance of the KC1000 Heater.
WARNING!
TO AVOID PERSONAL INJURY, BEFORE SERVICING:
(A) DISCONNECT AC POWER TO THE UNIT
(B) SHUT OFF THE GAS SUPPLY TO THE UNIT
(C) ALLOW THE UNIT TO COOL TO A SAFE TEMPERATURE
6.2 SPARK IGNITOR
The spark ignitor (part no.GP-122435-S) is located in the body of the burner (see Fig. 6.1). The ignitor
may be HOT. Care should be exercised. It is easier to remove the ignitor from the unit after the unit has
cooled to room temperature.
CAUTION!
The ignitor must be removed and installed using the ignitor removal tool provided with the unit(s). Damage
to the burner due to using a socket for removal and installation of the ignitor is not covered under warranty
To inspect/replace the Ignitor:
1. Set the ON/OFF switch on the control panel to the OFF position and disconnect AC power from the
unit.
2. For access to the spark ignitor, remove the unit’s right side panel. Access can also be gained tby
removing the rear panels and condensate drainage system
3. Disconnect the ignitor cable from the ignitor extension. Remove the silicone ignitor plug from the
burner shell by simultaneously twisting and pulling downward.
4. Insert the ignitor removal tool into the burner shell, where the ignitor plug was removed. Screw the
outer barrel of the tool into the burner shell. Push the inner barrel up and fit the hexagonal end of the
tool over the ignitor. Unscrew the ignitor from the burner head and then the tool from the burner shell.
5. The ignitor is gapped at 1/8-inch. If there is a substantial erosion of the spark gap or ground electrode,
the ignitor should be replaced. If carbon build-up is present, clean the ignitor using fine emery cloth.
Repeated carbon build-up on the ignitor is an indication that a check of the combustion settings is
required (refer to Section 4 for Combustion Calibration).
6. Prior to reinstalling the ignitor, a very light coating of anti-seize compound must be applied to the
ignitor threads.
CAUTION!
The ignitor must be removed and installed using the ignitor removal tool provided with the unit(s). Damage
to the burner due to using a socket for removal and installation of the ignitor is not covered under
warranty.
7. Reinstall the ignitor assembly using the ignitor removal tool. Do not over tighten the ignitor. A slight
snugging up is sufficient.
8. Reinstall the ignitor plug into the burner shell by simultaneously twisting and pushing it into the shell.
9. Reattach the ignitor cable to the extension and verify that it “clicks” into place.
10. Replace the rear cover panels or right side panel. Replace the condensate cup to drain tubing.