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Maintenance, Inspect ignition and flame sense electrodes, Check ignition ground wiring – Lochinvar Sync Condensing Boiler 1.3 User Manual

Page 39: Check all boiler wiring, Check control settings, Perform start-up and checks, Check burner flame

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Inspect ignition and flame sense

electrodes

1. Remove the ignition and flame sense electrodes from the

boiler heat exchanger access cover.

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 electrode, making sure

gasket is 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. Go to the Setup Screen and check all settings. See Section

1 of this manual. Adjust settings if necessary. See Section
1 of this 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 - Start-up of the SYNC Installation and
Operation Manual.

2. Verify cold fill pressure is correct and that operating

pressure does not go too high.

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
burner and clean it thoroughly using a vacuum cleaner or
compressed air. Do not use compressed air to clean burner
if performed inside a building.

3. Remove the burner, reference FIG. 2-2.

4. When replacing the burner, ensure gasket is in good

condition and positioned correctly (FIG. 2-2).

BURNER

AIR/GAS GASKET

FLAPPER VALVE

BURNER DOOR

BURNER DOOR

HEX NUT (6)

IGNITER

FLAME SENSE

IGNITER GASKET

FLAME SENSE

GASKET

FLAME SENSE

SCREW (2X)

IGNITER SCREW (2X)

DOOR FIBER

FLAPPER VALVE

SCREW (5X)

Figure 2-2 Burner Assembly

2

Maintenance

(continued)

39

Service Manual

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