Lanair HI140i - Manual (Page 40)

SECTION 15 FLAME ADJUSTMENT
15.1 Start the heater, let it run for at least 15 minutes to reach operating
temperature before proceeding.
15.2 Check the chimney draft, set the barometric damper to -.06 WC when hot
and running.
15.3 Check the atomizing air pressure, set the air filter/regulator on the heater to
15 PSI as a starting point.
15.4 Check the fuel pressure gauge on the burner, set to:
Model HI-100i Model HI-140i
No. 1 and No. 2 Fuel Oil 1 – 1 1/2 LBS. 3-4 LBS.
Used Crankcase Oil 10W-50W 1 – 1 1/2 LBS. 3-4 LBS.
Used Automatic Transmission Fluid 1 – 1 1/2 LBS. 3-4 LBS.
Adjust the thumb screw on the fuel by-pass regulator. Lock into position.
The flame should extend no more than 3/4 of the way into the chamber.
NOTE: The above pressure is a staring point, depending on your installation you
may need further adjustment. Always VISUALLY SET THE FLAME See page
26A.
15.5 Loosen the combustion air adjustment baffle, slowly close the baffle in
1/16” increments until the heater (flame) starts to rumble. Then slowly open
the baffle in 1/16” increments until the rumbling stops, (wait 2 minutes
between adjustments) finally open the baffle an additional 1/8” to provide
excess oxygen. Secure the baffle, (See page 26A).
NOTE: mechanical equipment like gauges and regulators are not always 100
percent accurate, VISUAL INSPECTION OF THE FLAME IS REQUIRED in
order to properly dial in the flame settings, see page 26AA.
Page 26A