MAINTENANCE
Table1 - Maintenance Schedule
SECTION ITEM 6 Mos. 12 Mos. 24 Mos.
7.2
Inspect Replace 15 mins.
7.3
Inspect Replace 15 mins.
7.4
Check Check 1 hr.
7.5
Safety
Chart in
20 mins.
7.7
*Manifold &
Tubes
clean if
4 hrs.
* Recommended only when unit will be run in an extreme condensing mode for prolonged periods of time.
7.3 FLAME DETECTOR
The flame detector assembly is located in the
body of the burner (see Fig. 7.1A). 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. Put the green ON/OFF button on the control
panel, to the OFF position and disconnect
AC power to the unit.
2. Remove the side and top panels from the
unit.
3. Disconnect the flame detector lead wire.
Unscrew the flame detector and remove it.
(See Fig 7.1B)
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 hand tight only.
6. Reconnect the flame detector lead wire.
7. Reinstall the rear, side and top panels on
the unit.
7.4 COMBUSTION CALIBRATION
Combustion settings must be checked at the
intervals shown in Table 1 as part of the
maintenance requirements. Refer to Sections
4.2 and 4.3 for combustion calibration
instructions.
Figure 7.1B
Spark Ignitor and Flame Detector Location Cut-
Away View
7.5 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 in a logbook. See
Section 6-Safety Device Testing Procedures.
7.6 BURNER
SPARK PLUG
IGNITOR
CONTACTOR
FLAME
DETECTOR
IGNITOR
BUSHING
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