AERCO KC1000 Water Heater July 2011 - Manual (Page 47)

MAINTENANCE
6-3
6.3 FLAME DETECTOR
The flame detector (part no. 124837) is located in the body of the burner (see Fig. 6.1). The flame
detector may be HOT. Allow the unit to cool sufficiently before removing the flame detector.
To inspect or replace the flame detector:
1. Set the ON/OFF switch on the control panel, to the OFF position and disconnect AC power from the
unit.
2. To access the flame detector, remove the left side panel from the unit.
3. Disconnect the flame detector lead wire.
4. Inspect the detector thoroughly. If eroded, the detector should be replaced. A white coating is an
indication of oxidation, which may be removed with an abrasive cloth (such as Scotch Brite).
NOTE:
Although flame strength may be checked using the C-More controller
display (see OPERATING MENU, paragraph 3.4 and Table 3.2), it is
strongly recommended that you instead use the procedure as described
in paragraph 6.13 for accurate flame strength measurement and to
assure trouble free operation of the flame detection circuit.
5. Reinstall the flame detector hand tight only, and reconnect the flame detector lead wire.
6. Replace any panels previously removed.
6.4 COMBUSTION CALIBRATION
Combustion settings must be checked at the intervals shown in Table 6-1 as part of the maintenance
requirements. Refer to Section 4 for combustion calibration instructions.
6.5 SAFETY DEVICE TESTING
Systematic and thorough tests of the operating and safety devices should be performed to ensure that
they are operating as designed. Certain code requirements, such as ASME CSD-1, require that these
tests be performed on a scheduled basis. Test schedules must conform to local jurisdictions. The results
of the tests should be recorded and preserved as directed by ruling jurisdictions. See Section 5-Safety
Device Testing Procedures.
6.6 BTU TRANSMITTER PUMP LUBRICATION
The BTU Transmitter pump should be lubricated every six months. There are two oil ports located on the
top of the pump, (see Fig. 6.2). Oil using 4 to 5 drops of SAE20 weight non-detergent oil at each port. DO
NOT OVER OIL.
Figure 6.2
BTU Transmitter Pump Oil Port Locations