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9. Replace the variable regulator. Using a Torx T-20
screwdriver, remove the three specialty screws from the
regulator tower on the front of the valve. Note: To help
identify which screws to remove, refer to the new regulator in the
kit. See fig. 7.7.
10. Remove the regulator tower and the rubber diaphragm.
11. Install the new variable regulator tower from the kit. Be sure
that the gasket is properly positioned and tighten screws
securely.
12 . Apply the identification labels to the stove so that they can be seen by
any person that may be servicing the stove.
• Label "A": Apply Control Compartment Door, next to the lighting
instructions.
• Label "B": Apply to the Rating Plate.
• Small valve sticker: Apply to valve.
11. Reassemble the stove and apply gas to the system.
12. Leak Check: Check for leaks using a soapy water solution or
digital gas detector.
NEVER USE OPEN FLAME TO CHECK FOR GAS LEAKS.
AVOID WETTING THE IFC UNIT OR MOTORIZED
REGULATOR WHEN CONDUCTING LEAK CHECK.
Apply Small
Conversion Label
to valve
Apply Label
"A" to Controls
Compartment Door
Figure 7.6.
Conversion label "A" location.
13. Confirm correct gas pressure. Use a manometer to check
pressures as specified under Section 9, Gas Pressure (page 20).
14. Adjust the Air Shutter. Fig. 7. 7
The factory setting for NG is 1/16" open. Adjustment may be
necessary to provide the best flame picture depending upon the
specific vent configuration.
• Start with the shutter set open to 1/16".
• Push the shutter stem back (to the rear) to restrict air.
• Pull the shutter stem forward (toward yourself) to open the
shutter and add oxygen to the fuel mix.
With some experimentation, you will find the shutter position
that works best for that particular installation.
• Run the stove at least 15 minutes to let the burner settle-in
before making further adjustments in very small increments
(1/16" - 1/8")
Figure 7.7.
Air shutter adjustment.
130139_Rev 1 GF 520 DV 12/22
OPEN
CLOSED
19
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