Gas Conversion Kit Installation Guide

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GAS CONVERSION KIT

Installation Instructions

Range (KRD/KRG) - Rangetop (KRT)

FOR SERVICE PERSONNEL ONLY

IMPORTANT - READ ALL INSTRUCTIONS BEFORE YOU BEGIN

THE INSTRUCTIONS HEREIN MUST ONLY BE PERFORMED BY A QUALIFIED SERVICE

TECHNICIAN. THE APPLIANCE MUST BE COMPLETELY COOL AND THE GAS SOURCE

MUST BE SHUT OFF OR REMOVED BEFORE ATTEMPTING GAS CONVERSION. FOR KRG

MODELS, THE UNIT MUST BE PULLED AWAY FROM THE WALL TO ACCESS THE REAR.

Some parts inside your appliance have sharp edges. Care must be taken when handling

the various components to avoid personal injury. Wear gloves when handling. Have a fire

extinguisher nearby.

TOOLS REQUIRED:

Work gloves

Safety glasses

Phillips screwdriver

Flat-blade screwdriver

Plastic or non-marring pry tool

Pipe wrench or large slip-joint pliers

Locking pliers

Socket wrench with 8mm socket

Open end or combination wrenches (8, 10, 12, 14mm, 1/2”, 7/8” )

IF THE INFORMATION IN THIS MANUAL IS NOT FOLLOWED

EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING

PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH.

Flammable Gas - disconnect all propane or natural gas supplies to this

unit before servicing.

Electrical Parts & Components – disconnect all power supplies before

servicing.

DANGER

If you smell gas:

1. Shut off gas to the appliance.

2. Extinguish any open flame.

3. Open windows and doors in the room.

4. If odor continues, keep away from the

appliance and immediately call your gas

supplier or your fire department.

DANGER

1. Do not store or use gasoline or

other flammable liquids or vapors

in the vicinity of this or any other

appliance.

2. An LP cylinder not connected for

use shall not be stored in the vicinity

of this or any other appliance.

READ THIS MANUAL CAREFULLY AND COMPLETELY BEFORE USING YOUR

RANGE TO REDUCE THE RISK OF FIRE, BURN HAZARD, OR OTHER INJURY.

KEEP THIS MANUAL FOR FUTURE REFERENCE.

KIT P/N DESCRIPTION

023731 KIT, GAS CONVERSION, KRG/KRD/KRT SERIES, LP

023732 KIT, GAS CONVERSION, KRG/KRD/KRT SERIES, NG

Summary of content (24 pages)

PAGE 1
GAS CONVERSION KIT KIT P/N DESCRIPTION 023731 KIT, GAS CONVERSION, KRG/KRD/KRT SERIES, LP 023732 KIT, GAS CONVERSION, KRG/KRD/KRT SERIES, NG EN Installation Instructions Range (KRD/KRG) - Rangetop (KRT) FOR SERVICE PERSONNEL ONLY IMPORTANT - READ ALL INSTRUCTIONS BEFORE YOU BEGIN THE INSTRUCTIONS HEREIN MUST ONLY BE PERFORMED BY A QUALIFIED SERVICE TECHNICIAN. THE APPLIANCE MUST BE COMPLETELY COOL AND THE GAS SOURCE MUST BE SHUT OFF OR REMOVED BEFORE ATTEMPTING GAS CONVERSION.
PAGE 2
DISASSEMBLY - RANGETOP SECTION EN 1. Remove the knobs, grates, burner caps and burner rings as shown below. For models with a griddle, remove the cover and grease tray, and lift the griddle plate straight up by the front and back. (KRT485GD shown) 2. Insert a plastic or other non-marring tool to pry into the seam between the control panel and the body in the approximate location shown. Apply light pressure to release the bottom edge of the control panel from the ball retaining studs hidden inside.
PAGE 3
DISASSEMBLY - RANGETOP SECTION (cont.) 3. Remove the screws shown below to detach the bullnose trim assembly. REMOVE 2 SCREWS REMOVE 2 SCREWS LEFT SIDE RIGHT SIDE 4. Slide the bullnose trim assembly forward as shown and set aside. (KRT365 shown) SLIDE FORWARD 5. Remove all screws (red arrows) around each burner base which hold the burner bowl in place.
PAGE 4
DISASSEMBLY - RANGETOP SECTION (cont.) 6. Remove the burner bowl as shown below. (KRT365 shown) EN TILT UP BURNER BOWL ABOUT 30 DEG. TO DETACH FROM REAR ISLAND TRIM / RISER. NOTE: CENTER BURNER IGNITER WILL REMAIN ATTACHED TO BURNER BOWL WHEN RAISED. DISCONNECT THIS WIRE. 7. Remove each LED board from unit as shown below. You do not have to disconnect each wire connector - they can be left hanging in place.
PAGE 5
ORIFICE LOCATIONS - RANGETOP SECTION Shown below is a typical burner layout. The dual-flow rear burners have 15500 BTU output, while the dual-flow front burners are 23000 BTUs. The center single-flow burner (if equipped) has a 30000 BTU output (or 23000 on LP gas). TYPICAL BURNER LAYOUT (KRT365 SHOWN) 15.5k 23k 30k 15.5k 23k The following pages describe how to replace the orifices in each burner type and each valve type. Do one item at a time so as not to mix up orifices.
PAGE 6
Front Rear Front Rear Front Rear BURNER LOCATION 23000 15500 23000 15500 23000 15500 NG 23000 15500 23000 15500 23000 15500 LP BURNER OUTPUT (BTU/hr) 2000 - 5999 � (600 - 1800m) H2 6000 - 10000 � (1800 - 3050m) H1 Sea Level - 1999 � (600m) ALTITUDE 046 052 047 053 049 054 NG 055 058 055 060 056 062 LP Dual Flow Burner Main Orifice 023690-xxx 073 073 073 073 074 074 NG 078 078 078 078 079 079 LP Dual Flow Burner Simmer Orifice 023698-xxx 065 065 065 065 065 065 NG 073 073 073 073 073 073
PAGE 7
SIMMER ORIFICE 023698-XXX VENTURI / AIR SHUTTER NOTE: ALIGN VENTURI / SHUTTER WITH 2nd GROOVE. DIMENSION SHOWN FOR REFERENCE ONLY. .177 inch [4.5mm] LOCK SCREW The detail view shows the appropriate venturi / air-shutter dimension. The dimension is shown for reference only in case the lock screw was loosened, or the flame characteristics are not correct and need adjustment.
PAGE 8
CHANGING BURNER ORIFICES - RANGETOP SECTION (cont.) EN ORIFICE HOLDER LOCK SCREW X DIM 'X' GAS 1/8" [3.2mm] NG 11/64" [4.4mm] LP AIR SHUTTER MAIN ORIFICE (SEE P/N ABOVE) SINGLE-FLOW BURNER BASE ASSEMBLY 9. The main BURNER orifice can be replaced without disconnecting the hose, however care must be taken when handling to avoid bending or kinking the hose. Loosen the lock screw to extract the orifice holder from the main body.
PAGE 9
ACCESSING VALVE ORIFICES 10. Remove the valve orifices via the access holes in the bracket as shown below.
PAGE 10
CHANGING VALVE ORIFICES EN 11. Replace the VALVE orifices as shown below. See the chart on page 6 to select the appropriate orifice size for your gas type / altitude. The part number and identification (color code) for the orifice is given in the table below. NOTE: REMOVE AND REPLACE ONE ORIFICE AT A TIME. MAKE SURE ORIFICE IS FULLY TIGHTENED ON INSTALLATION.
PAGE 11
CHANGING VALVE ORIFICES (cont.) 12. Replace the VALVE orifice as shown below. See the chart on page 6 to select the appropriate orifice size for your gas type / altitude. The part number and identification (color code) for the orifice is given in the table below. EN NOTE: REMOVE AND REPLACE ONE ORIFICE AT A TIME. MAKE SURE ORIFICE IS FULLY TIGHTENED ON INSTALLATION.
PAGE 12
CHANGING ORIFICES - OVEN SECTION (GAS OVEN ONLY) EN 13. Remove the kick plate below the oven door(s). Fully open the door(s) and remove the screws on the top face of the kick plate. Close the door(s) and pull off the kick plate in a similar way as you did for the control panel, by using a flat tool to apply light pressure to release the left and right sides of the plate from the ball retaining studs hidden inside. Set aside. The main (large) oven cavity has an upper and lower burner.
PAGE 13
CHANGING ORIFICES - OVEN SECTION (GAS OVEN ONLY) (cont.) 16. Install the new orifice slowly to avoid crossthreading and damaging the threads. Consult the table on page 21 for identification of orifice sizes. The orifice will become noticeably harder to turn as you proceed. Use the same technique as shown in step 15 on the previous page to prevent the elbow from rotating.
PAGE 14
CHANGING ORIFICES - OVEN SECTION (GAS OVEN ONLY) (cont.) EN 19. MAIN OVEN - UPPER BURNER It is possible to remove the orifice without disconnecting the hose. Remove the locknut (shown here in violet) with a 7/8” wrench. Then remove the orifice with a 1/2” wrench. If necessary, use another wrench or locking pliers to prevent the brass elbow from rotating. Consult the table on page 21 for identification of orifice sizes.
PAGE 15
CHANGING ORIFICES - GRIDDLE MODELS ONLY 20. GRIDDLE BURNER The orifice for the griddle burner is located under the cover below (shown in blue). The hot surface igniter (shown in orange) is attached to this cover. The wires to the igniter pass through the cover. Remove 4 screws (shown in red) and swing the cover carefully out of the way to expose the orifice underneath. Use caution as the igniter is very fragile.
PAGE 16
CONVERTING THE REGULATOR EN With access to the rear of the appliance, you can convert the gas type of the regulator by following the instructions below (conversion from NG to LP gas is shown). This can be done without removing the regulator. LEAK TESTING & ADJUSTMENT GAS SUPPLY The local gas authority or supplier should be consulted at the installation planning stage in order to establish the availability of an adequate supply of gas (NG or LP).
PAGE 17
LEAK TESTING & ADJUSTMENT (cont.) Make certain new piping and connections have been made in a clean manner and have been purged so that piping compound, chips, etc. will not clog regulators, valves, orifices, or burners. EN IF THE INFORMATION BELOW IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH. LEAK TESTING TOP BURNERS At this point, all conversion components should be installed and any hoses removed previously have been returned and tightened.
PAGE 18
LEAK TESTING & ADJUSTMENT (cont.) GENERAL EN A complete gas tightness check must be performed of all gas-carrying components due to possible movement during installation, or excessive pressure unknowingly being applied to parts of the unit. BEFORE TESTING • DO NOT SMOKE while leak testing. • Never leak test with an open flame. • Make a soap solution of one part liquid detergent and one part water, for leak testing purposes.
PAGE 19
LEAK TESTING & ADJUSTMENT (cont.) Verify ignition at each burner. Igniter will make a clicking sound until the flame lights within 4 seconds, then the clicking will stop. Check flame characteristics at each burner per the descriptions below. Flames should be stable and not dance or lift off the burner ports. Flame may need to burn for a few minutes to purge the gas lines of impurities. These appear as intermittent orange tips or even tiny sparks in the flame.
PAGE 20
LEAK TESTING & ADJUSTMENT (cont.) LEAK TESTING OVEN BURNERS (KRG MODELS ONLY) EN • • • • IF THE INFORMATION BELOW IS NOT FOLLOWED EXACTLY, A FIRE OR EXPLOSION MAY RESULT CAUSING PROPERTY DAMAGE, PERSONAL INJURY, OR DEATH. Make sure the flex hoses leading to the orifices were all tightened (upper, lower, and rear). Make sure all control valves are in the “OFF” position. Apply the soap solution to all fittings, flex hoses, etc. Turn the gas supply ON. MAIN OVEN - LOWER BURNER • Turn on the power.
PAGE 21
ORIFICE CHARTS - GRIDDLE/OVEN SECTIONS Use the chart below to select the appropriate orifice size for your gas type / altitude. The part number for the orifice is given in the table below.
PAGE 24
RETAIN THIS MANUAL FOR FUTURE REFERENCE Hestan Commercial Corporation 3375 E. La Palma Ave.