Thermo Pride MODEL OPA - Manual (Page 36)

All installations and services must be performed by qualified service personnel.
35
f. Open the inspection cover on the upper mounting plate above the
burner.
g. Turn the disconnecting switch to “ON”.
h. Prime the pump to remove air in the oil supply line.
i. When ignition is established, make a preliminary burner air
adjustment to attain a clean combustion flame. Generally, the burner
bulk air band should be about 3/16 inch open and the opening of the
burner air shutter set in the range of “2” to “7”, refer to Figure 8.
Figure 8: Preliminary Adjustment of Burner Air Band and Air Shutter
j.
Replace the inspection cover above the burner.
k. After the appliance is warmed up to a steady state condition (about
15 minutes), the final burner adjustment should be made using
combustion instrumentation for smoke, carbon dioxide (CO
2
) or
excess oxygen (O
2
), and flue gas temperature. In order to achieve the
most efficient combustion, the following steps must be taken:
i. SMOKE: A smoke sample should be drawn from the heat
exchanger flue passageway, which is covered by the vent terminal.
(Remove a large machine screw from the front face of the vent
terminal for direct access to the flue through the opening.) If the first
smoke reading is zero (0), close the air band, or shutter, on the
burner until a trace smoke reading is measured.