Initial Firing; Manifold Pressure Regulator Adjustment; Pilot Flame Adjustment - Osburn Cordova Series Installation And Operating Instructions Manual

3.3.9 Initial Firing

When lit for the first few times, the appliance may emit an odour resulting from evaporation of paint and
lubricants used in the manufacturing process. Open a door or window for ventilation. Anyone with a
respiratory condition may need to leave the room during the initial firings.
N : I
OTE T IS NORMAL FOR THE APPLIANCE TO EXPAND AND CONTRACT WHILE IT HEATS UP OR COOLS
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DOWN WHETHER THIS IS FROM A COLD START OR A STEADY STATE CONDITION WHERE THE FAN HAS COME
. U /
ON OR OFF NDER THESE CIRCUMSTANCES IT IS POSSIBLE THAT THE EXPANSION CONTRACTION OF THE
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METAL PARTS MAY PRODUCE A TICKING SOUND
Occasionally, after a cold start, vapour may condense and fog the glass, and the flames may be partially
blue. After a few minutes the moisture will disappear and the flames will become yellow.

3.3.9.1 Manifold Pressure Regulator Adjustment

The manifold pressure regulator controls gas input and flame height, and is pre-adjusted at the factory. No
further adjustment is required. Manifold pressure can be verified only.
f i r e - p a r t s . c o m

3.3.9.2 Pilot Flame Adjustment

For proper operation, the pilot and main burner flames must be steady and not lifting off or floating. The top
3/8" - 1/2" (10-13mm) of the thermopile should be engulfed by the pilot flame. The pilot flame adjustment
should be performed by a qualified service person only. To adjust the pilot flame, turn the pilot adjustment
screw counter-clockwise to increase, and clockwise to decrease the flame. Ensure that the pilot flame
completely engulfs the thermopile (see Figure 24).
Figure 24
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