Maintenance, Inspect ignition and flame sense electrodes, Check ignition ground wiring – Lochinvar SYNC 1.0 User Manual

Page 57: Check all boiler wiring, Check control settings, Perform start-up and checks, Check burner flame

Installation & Operation Manual

Maintenance

(continued)

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

Start boiler and perform checks and tests specified
in Section 9 - Start-up.

Verify cold fill pressure is correct and that operating
pressure does not go too high.

Check burner flame

Inspect flame through observation window.

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.

Remove the burners, reference FIG. 11-2.

When replacing the burners, ensure gaskets are in good
condition and positioned correctly (FIG. 11-2).

BURNER

STABILITOR

AIR/GAS GASKET

FLAPPER VALVE

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 11-2 Burner Assembly