Crown GLT-80 Installation & Operation Manual page 16

Service
Adjustments
Pilots
The pilot adjustment is part of the combination control valve located just behind the lower front access door. It is located
on the centre left side of the control just below the large slotted screw head. (See Figure 1). Remove the large slotted
screw; below this is a second slotted screw used for adjustment of the pilot burner flame.
FIGURE 1
The front burner shield should be removed to see the pilot. The pilot should be adjusted as follows:
Adjust the Pilot Burner Flame
The pilot flame should envelop 3/8 to 1/2 inch [10 to 13 mm] of the
igniter-sensor tip. Refer to Figure 2. To adjust the pilot flame:
1. Remove the pilot adjustment cover screw. Refer to Figure 1.
2. Turn the inner adjustment screw clockwise to decrease or
counterclockwise to increase the pilot flame.
3. Always replace the cover screw after adjustment and tighten
firmly to ensure proper operation.
PILOT ORIFICE SIZES
Natural Propane
0.018 IN. 0.010 IN.
GAS PRESSURE REGULATOR
The gas pressure regulator is an integral part of the combination gas control located just behind the lower front access
door. The pressure regulator adjustment is on the lower right side of the gas control. (See Figure 1). The large slotted cap
must be removed to access the adjustment screw.
To check the manifold pressure a pressure gauge (manometer) must be connected to the 1/8" NPT pressure tap on the gas manifold.
With the gas off, connect your pressure indicating instrument to the manifold with a fitting appropriate for your instrument.
1. Turn the unit on; with main burners on, read the manifold pressure. The pressure should be 4 inches water column (W.C.)
(±) .2 inches W.C. for natural gas or 10 inches W.C. for propane gas. Adjust the pressure regulator to obtain the appropriate
pressure. Check serial plate on lower right side of unit to confirm exact gas type and manifold pressure for your unit.
When pressure has been correctly adjusted turn unit off. Remove pressure indicating instrument and replace the 1/8" NPT
plug in manifold. Replace regulator cap and close access door.
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Top View of Gas Control
INSTALLATION & OPERATION MANUAL 10325 REV 1 (11/21)
Gas Fired Steam Tilting Kettles
FIGURE 2
Proper Flame Adjustment