System Setup And Maintenance; Annual Maintenance - Field Controls SWG-3 Product Manual

Brochure & specs (14 pages)

Manual (12 pages)

6. Once proper draft is achieved, measure CO

the highest possible CO

reading with a zero smoke reading. As the intake airflow is increased or decreased, the draft may

change. Repeat steps 3 through 6 to re-adjust the draft control and choke plate before attempting any other adjustments.

7. Measure combustion efficiency and exhaust gas temperature at the venter inlet. Combustion efficiency should be adjusted to

maximum attainable at zero smoke. Exhaust gas temperature at the venter inlet should range between 200ºF and 550ºF.

8. If maximum efficiency and zero smoke yields a temperature below 200ºF at the inlet to the venter, the following

suggestions must be considered.

A. Use a larger oil nozzle or higher oil pump pressure to raise the firing rate of the burner. Repeat steps 3

through 7 until all combustion parameters are within the specified ranges.

B. Reduce the length of the duct from the appliance to the venter, which will increase the venter inlet temperature.

C. Insulate the vent pipe to minimize heat loss.

D. Seal the vent pipe joints to reduce uncontrolled dilution air.

TESTING

TESTING:

1. The thermostat (wall thermostat, or aquastat) calls for heat, starting venter motor.

2. After the venter motor has come up to speed, the pressure switch closes. This closes the circuit to the burner and

allows the burner to operate. This occurs in approximately 1 to 2 seconds.

3. After the heating requirement is satisfied, the thermostat circuit opens and deactivates the burner and power venter circuit.

4. Oil venting systems require a post purge device. During the post purge cycle, the venter operates for a period after the burner

has shut off. This is to purge the remaining flue gases and to cool the combustion chamber. Typical post purge times are 3 to 5

minutes. Longer purge times may be required depending on system installation.

ANNUAL MAINTENANCE

ANNUAL MAINTENANCE:

1. Motor: Inspect the motor once a year; it should rotate freely. To prolong the life

lubricate with six drops of SWG Super Lube, Part #46226200, annually. Use of

any other type of lubricant may cause premature motor failure.

Note: Permanently-lubricated electric motors with sealed, lubricated bearings

should not be oiled. Doing so may damage the motor.

2. Wheel: Inspect the venter wheel annually to clear any soot, ash,

or coating that inhibits either rotation or air flow. Remove all foreign materials

before operating.

3. Vent System: Inspect all vent connections annually for looseness, for evidence of

corrosion, and for flue gas leakage. Replace, seal, or tighten pipe connections if necessary.

Check the venter choke plate to ensure it is secured in place. Check the barometric draft control to

ensure the gate swings freely.

4. System Safety Devices: With the heating system operating, disconnect the pressure sensing tube from the

pressure switch on the CK Kit. This should stop the burner operation. Reconnecting the tube should relight the burner.

Technical Service:

800.742.8368 •

and smoke levels. If necessary, adjust the intake airflow at the burner to obtain

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