11 Maintenance
Inspect ignition and flame sense electrodes
1.Remove the ignition and flame sense electrodes from the boiler heat exchanger access covers.
2.Remove any deposits accumulated on the ignition/ flame sense electrode using sandpaper. If the electrodes cannot be cleaned satisfactorily, replace with new ones.
3.Replace ignition/flame sense electrodes, making sure the gaskets are in good condition and correctly positioned.
Check ignition ground wiring
1.Inspect boiler ground wire from the heat exchanger access cover to ground terminal strip.
2.Verify all wiring is in good condition and securely attached.
3.Check ground continuity of wiring using continuity meter.
4.Replace ground wires if ground continuity is not satisfactory.
Check all boiler wiring
1.Inspect all boiler wiring, making sure wires are in good condition and securely attached.
Check control settings
1.Set the control module display to Parameter Mode and check all settings. See Section 1 of the SYNC Service Manual. Adjust settings if necessary. See Section 1 of the SYNC Service Manual for adjustment procedures.
2.Check settings of external limit controls (if any) and adjust if necessary.
Perform start-up and checks
1.Start boiler and perform checks and tests specified in Section 9 -
2.Verify cold fill pressure is correct and that operating pressure does not go too high.
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Installation & Operation Manual
Check burner flame
1.Inspect flame through observation window.
2.If the flame is unsatisfactory at either high fire or low fire, turn off boiler and allow boiler to cool down. Remove the burners and clean them thoroughly using a vacuum cleaner or compressed air. Do not use compressed air to clean burners if performed inside a building.
3.Remove the burners, reference FIG.
4.When replacing the burners, ensure gaskets are in good condition and positioned correctly (FIG.
Figure 11-2 Burner Assembly
DOOR FIBER
| BURNER DOOR |
|
| BURNER DOOR |
|
| HEX NUT (6) |
|
| BURNER |
|
AIR/GAS GASKET |
|
|
FLAPPER VALVE |
| IGNITER GASKET |
SCREW (5X) | IGNITER | FLAME SENSE |
| ||
FLAPPER VALVE |
| |
| GASKET | |
| FLAME SENSE | |
| IGNITER SCREW (2X) | |
| FLAME SENSE |
|
| SCREW (2X) |
|
Check flame signal
1.At high fire the flame signal shown on the display should be at least 10 microamps.
2.A lower flame signal may indicate a fouled or damaged flame sense electrode. If cleaning the flame sense electrode does not improve, ground wiring is in good condition, and ground continuity is satisfactory, replace the flame sense electrode.
3.See Section 3 - Troubleshooting in the SYNC Service Manual for other procedures to deal with low flame signal.
Review with owner
1.Review the SYNC User’s Information Manual with the owner.
2.Emphasize the need to perform the maintenance schedule specified in the SYNC User’s Information Manual (and in this manual as well).
3.Remind the owner of the need to call a licensed contractor should the boiler or system exhibit any unusual behavior.
4.Remind the owner to follow the proper shutdown procedure and to schedule an annual
