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General Information
Gas conversion kits are available to adapt your appliance
from the use of natural gas to propane, or propane to natural
gas. These kits contain all the necessary components needed
to complete the task including labeling that must be affixed
to ensure safe operation. The information provided must be
used in conjunction with the Care and Operation Instructions
(P/N 506025-07). Please read the instructions completely before
performing the procedures detailed in this document.
Deration
These appliances are tested and approved for installations at
elevations of 0–4500 ft (0–1372 m) above sea level using the
standard burner orifice sizes (see Table 1).
At higher elevations, the amount of BTU fuel value delivered
must be reduced by either using gas that has been derated by
the gas company or by changing the burner orifice to a smaller
size as regulated by the local Authorities Having Jurisdiction and
by the (USA) National Fuel Gas Code NFPA 54/ANSI Z223.1—
latest edition or, in Canada, the CAN/CSA-B149.1 codes—
latest edition.
Model Natural Gas Propane
40” Models 0.1405in.(#28)*•H2286 0.086in.(#44)*•H2287
45” Models 0.154in.(#23)*•H8808 0.093in.(#42)*•H4816
45”
Contemporary 0.154in.(#23)*•H8808 0.073in.(#49)*•H8807
* Standard size installed at factory
•Part/CatalogNumber
Table 1: Burner Orifice Sizes, Elevation 0–4500 ft ( 0–1372 m)
NOTE: Turn off the appliance and allow it to completely cool
before proceeding.
Required Tools
• Torx T20 Driver
• 5/32 in. Allen wrench
• Manometer
• 1/2 in. Deep socket or
open ended wrench
• 5/16 in. Hex-head nut driver
• 5/8 in. Open ended wrench
Kit Contents
• Orifice, Brass (1)
• SIT Regulator LP or NG
Conversion Kit (1)
• Label, Valve
Identification (1)
• Injector, Pilot Orifice (1)
• Label, Conversion (1)
Fireplace
Model No. Conversion Kit
Model No. Conversion Kit Cat. No.
40” Electronic Natural GCK-MDLX40NP H8668
45” Electronic Natural GCK-MDLX45NP H8669
Table 2: Natural Gas to Propane Gas Conversion Kits
Fireplace
Model No. Conversion Kit
Model No. Conversion Kit Cat. No.
40” Electronic Propane GCK-MDLX40PN H8670
45” Electronic Propane GCK-MDLX45PN H8671
Table 3: Propane Gas to Natural Gas Conversion Kits
NOTE: For contemporary LP burner setups, use the orifice and
conversion label shipped with the burner kit.
Before Installing the Kit
Step 1. Turn off the gas supply to the appliance and
disconnect the power supply at the circuit breaker.
Step 2. Remove the kit contents from the packaging carefully
to prevent breakage.
Step 3. Remove the modesty shield above the appliance front
door to expose the door screws.
Step 4. Remove the fireplace screen and screen rod, if installed.
Step 5. Remove the appliance front door before installing the
gas conversion kit. Refer to the appliance Installation
Instructions (P/N 506023-22).
Step 6. Carefully remove the logs and the grate assembly /
contemporary media, if installed.
CAUTION: THE GAS SUPPLY SHALL BE SHUT OFF PRIOR
TO DISCONNECTING THE ELECTRICAL POWER, BEFORE
PROCEEDING WITH THE CONVERSION.
ATTENTION. AVANT D’EFFECTUER LA CONVERSION,
COUPEZ D’ABORD L’ALIMENTATION EN GAZ,
ENSUITE, COUPEZ L’ALIMENTATION ÉLECTRIQUE.
Kit Installation Instructions
NOTE: In Canada, the conversion shall be carried out in
accordance with the requirements of the provincial authorities
having jurisdiction and in accordance with the requirements of
the CAN/CGA-B149.1 installation code.
La conversion devra être effectuée conformément
aux recommandations des autorités provinciales
ayant juridiction et conformément aux exigences du
code d’installation CAN/CGA-B149.1.
Step 1. Ensure all steps of “Before Installing the Kit” have been
completed, and that the appliance is cold.
Step 2. Refer to Figure 1. Remove the two (2) 5/16 in.
hex-head screws securing the burner to the burner
brackets. Carefully slide the burner to the left to clear
the venturi from the orifice. Set aside the screws
and burner assembly in a secure location for later
reinstallation.
Step 3. Using a 5/16 in. hex-head nut driver, remove the
two (2) screws securing the control compartment door
to the right side of the appliance.
Step 4. Rotate the control compartment door into the control
compartment and lift it away from the appliance. Set
aside the screws and control compartment door in a
secure location for later reinstallation.
NOTE: For Step 6 through Step 8, refer to the
instructions provided with the SIT valve for more
information.
Step 5. Using a Torx T20 driver, remove and discard the two
pressure regulator mounting screws, the stepper
motor pressure regulator tower, the spring, and
the diaphragm assembly. Properly dispose of all
removed components.