AERCO BMK 3.0 LN Nat. Gas APRIL 2009 - Manual (Page 52)

MAINTENANCE
Table 7-1 - Maintenance Schedule
PARAGRAPH ITEM 6 Mos. 12 Mos. 24 Mos.
Labor
Time
7.2
Spark
Igniter
*Inspect Inspect Replace 15 mins.
7.3
Flame
Detector
*Inspect Inspect Replace 15 mins.
7.4
Combustion
Calibration
*Check Check 1 hr.
7.5
Testing of
Safety
Devices
See CSD-1
Chart in
Appendix I
20 mins.
7.6 Burner Inspect 2 hrs.
7.7
Condensate
Drain Traps
*Inspect
Inspect &
Clean
1 hr.
* Only performed after initial 6 month period after initial startup.
7.3 FLAME DETECTOR
The flame detector, part no. 66006, is located in
the body of the burner (see Fig. 7-1). 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. Disconnect AC power
from the unit.
2. Remove the top panels from the unit.
3. Disconnect the flame detector lead wire.
Unscrew the flame detector and remove it.
(See Fig 7-2)
4. Inspect the detector thoroughly. If eroded,
the detector should be replaced. Otherwise
clean the detector with a fine emery cloth.
5. Reinstall the flame detector and flame
detector gasket, if removed.
6. Reconnect the flame detector lead wire.
7. Reinstall the side and top panels on the unit.
7.4 COMBUSTION CALIBRATION
Combustion settings must be checked at the
intervals shown in Table 7-1 as part of the
maintenance requirements. Refer to Chapter 4
for combustion calibration instructions.
SPARK
IGNITER FLAME
DETECTOR
BURNER
HOUSING
Figure 7-2
Spark Igniter and Flame Detector
Location Cut-Away View
7-2