Changing the STAR® burner orifices ............................. 8
Disassembling the rangetop........................................... 9
Setting the STAR burner valve screws ............................ 9
Changing the broil orifice, on GAS ranges only............. 10
Changing the bake orifice, on GAS ranges only ............11
Checking for gas leaks.................................................... 14
DEFINITIONS
9 WARNING
This indicates that death or serious injuries may occur as a
result of non-observance of this warning.
9 CAUTION
This indicates that minor or moderate injuries may occur as a
result of non-observance of this warning.
NOTICE: This indicates that damage to the appliance or
property may occur as a result of non-compliance with this
advisory.
Note: This alerts you to important information and/or tips.
Reassembling the appliance ........................................... 14
Checking the flame and burner performance................. 14
Support, accessories, and parts..................................back page
This THERMADOR® appliance is made by
BSH Home Appliances Corporation
1901 Main Street, Suite 600
Irvine, CA 92614
Questions?
1-800-735-4328
www.thermador.com
We look forward to hearing from you!
Page. 3
Safety
9 IMPORTANT SAFETY INSTRUCTIONS
READ AND SAVE THESE INSTRUCTIONS
Please read carefully
Save the original gas parts for possible conversion back in
the future.
Important: Only a qualified service technician or installer
should make this conversion.
Installer: Please leave these instructions with this unit for
the owner.
Owner: Please retain these instructions for future
reference.
WARNING
If the information in this manual is
not followed exactly, a fire or
explosion may result causing
property damage, personal injury or
death.
--DO NOT store or use gasoline or other
flammable vapors and liquids in the
vicinity of this or any other appliance.
--WHAT TO DO IF YOU SMELL GAS
•DO NOT try to light any appliance.
•DO NOT touch any electrical switch.
•DO NOT use any phone in your
building.
•Immediately call your gas supplier
from a neighbor’s phone. Follow the
gas supplier’s instructions.
•If you cannot reach your gas supplier,
call the fire department.
--Installation and service must be
performed by a qualified installer, service
agency or the gas supplier.
This kit is for converting Thermador appliances for
operation at altitudes above 5,400 ft. This kit contains
orifices for proper high altitude conversion for oven bake,
broiler, and STAR
These instructions advise you at what elevations and which
models you will need to convert your appliance for proper
operation at high altitude regions. It further instructs you
which parts of the appliance will need to convert to high
altitudes.
This kit cannot be used to convert older models of ranges.
This kit cannot be used to convert any other brand of
appliance.
WARNING
For Massachusetts installations
1. Installation must be performed by a qualified or
licensed contractor, plumber, or gas fitter qualified or
licensed by the state, province or region.
2. Shut-off valve must be a “T” handle gas cock.
3. Flexible gas connector must not be longer than 36
inches.
®
burners.
This conversion kit shall be installed by a
qualified service agency in accordance with the
manufacturer’s instructions and all applicable
codes and requirements of the authority having
jurisdiction. If the information in these
instructions is not followed exactly, a fire,
explosion or production of carbon monoxide
may result causing property damage, personal
injury or loss of life. The qualified service
agency is responsible for the proper installation
of this kit. The installation is not proper and
complete until the operation of the converted
appliance is checked as specified in the
manufacturer’s instructions supplied with the
kit.
Page. 4
9 IMPORTANT SAFETY INSTRUCTIONS
READ AND SAVE THESE INSTRUCTIONS
The following must be met when testing supply piping
system:
•The appliance and its individual shut-off valve
must be disconnected from the gas supply piping
system at test pressures in excess of 1/2 psig
(3.5 kPa).
•The appliance must be isolated from the gas
supply piping system by closing its individual
manual shut-off valve during any pressure testing
of the gas supply piping system at test pressures
equal to or less than 1/ 2 psig (3.5 kPa).
State of California Proposition 65 Warning:
: WARNING
This product can expose you to chemicals including
vinyl chloride, which is known to the State of California
to cause cancer and birth defects or other
reproductive harm. For more information go to
www.P65Warnings.ca.gov.
WARNING
NEVER leave the gas conversion partially completed.
If the appliance is operated while the gas conversion is
incomplete, high levels of carbon monoxide may be
emitted, or a fire or explosion may occur.
To the service agent
It is important that you know the following BEFORE you
begin the conversion of the appliance.
•Confirm that the gas supply system is available and
ready to use. This is particularly important for new
construction.
•Verify the type of gas supplied to the location. Ensure
that the appliance is connected to the type of gas for
which it is certified.
•You must plan for sufficient time and resources to
perform the conversion process properly and
completely before leaving the job site. Every step
described in these instructions must be performed to
safely convert the appliance for proper operation at
high altitudes. INCOMPLETE OR INADEQUATE
CONVERSION OF THE APPLIANCE CAN CREATE A
SAFETY HAZARD.
Gas and dual fuel ranges converted for propane (LP)
gas and high altitude
The appliance must first be converted for use with
propane (LP) gas before it can be converted for use at
high altitude. It is required that a a qualified service
technician install the propane (LP) conversion kit and the
high altitude kit.
Page. 5
High altitude instructions
Before you begin
9 CAUTION
Before proceeding with the conversion, shut off the
gas supply to the appliance prior to disconnecting the
electrical power.
Tools needed
•T-20 torx driver
•7/16'' box end wrench
•13/16'' box end wrench
•7 mm or a 9/32'' socket
•1/4'' nut driver
•16 mm hex bit or 5/8'' hex bit
•Adjustable wrench
•Soap and water mixture or leak-check solution
Parts included
Pro range natural gas high altitude kit for
cavity burners,
above 5,400 ft. and up to 10,200 ft.
Qty.
Converting natural gas units
above 5,400 ft. and up to
10,200 ft.
Change only the following oven bake burners. All other
bake burners shall remain the same.
36'' and 48'' Pro Harmony
(PRGxxxWxH)
Main oven bake burner only2.06 mm (206)
48'' Pro Grand
(PRGxxxWxG)
Auxiliary oven bake burner only 1.85 mm (185)
Checklist
Each of the following steps must be completed correctly
for the appliance to function properly. Check off each step
as it is finished.
36'' and 48'' Pro Harmony models (PRGxxxWxH)
Orifice no.
Orifice no.
Screwdriver, 1/8'' x 0.20''1
Orifice, 2.06 mm (206), 36/48'' Harmony main
oven bake
Orifice, 1.85 mm (185), 48'' Grand aux oven
bake
Pro range LP gas high altitude kit for STAR
and cavity burners,
from 10,000 ft. to 10,200 ft.
Screwdriver, 1/8'' x 0.20'' 1
Orifice, 1.26 mm (126), STAR burner3
Orifice, 1.20 mm (120), Harmony/Grand, main
oven broil
1
1
Qty.
1
Ù Step 1
Ù Step 2
Ù Step 3
Ù Step 4
Ù Step 5
48'' Pro Grand models (PRGxxxWxG)
Ù Step 1
Ù Step 2
Ù Step 3
Ù Step 4
Ù Step 5
Remove the oven door (page 11).
Remove the kick and front panels (page 13).
Change the main oven bake burner orifice to
the 2.06 mm (206) orifice (page 11 – page 13).
Check the oven for gas leaks (page 14).
Reassemble the door, kick and front panels.
Remove the oven door (page 11).
Remove the kick and front panels (page 13).
Change the auxiliary oven bake burner orifice
to the 1.85 mm (185) orifice (page 11 –
page 13).
Check the oven for gas leaks (page 14).
Reassemble the door, kick and front panels.
Page. 6
Converting propane gas units
48'' Pro Harmony models (PR(G/L)48xWxH)
from 10,000 ft. to 10,200 ft.
Change only the following STAR® burner and oven
orifices. All other burners shall remain the same.
36'' and 48'' Pro Harmony
PR(L/D)xxxWxH(U/C)
All front STAR® burners only1.26 mm (126)
All rear STAR burnersRemain unchanged
48'' Pro Harmony and 36'' Pro Grand
(PRL48xWxH and PRL36xWxG)
Main oven broil
•48'' Pro Harmony (PRL48xWxH)
•36'' Pro Grand (PRL36xWxG)
All other range models’ ovens and STAR
burners
Checklist
Orifice no.
Orifice no.
1.20 mm
(120)
Remain
unchanged
Ù Step 1
Ù Step 2
Ù Step 3
Ù Step 4
Ù Step 5
Ù Step 6
Ù Step 7
36'' Pro Grand models (PR(G/L)36xWxG)
Ù Step 1
Ù Step 2
Ù Step 3
Ù Step 4
Change only the front burner orifices to the
1.26 mm (126) orifices (page 8).
Set the valve screws for the front STAR
burners only (page 9).
Remove the oven door (page 11).
Remove the kick and front panels (page 13).
Change the main oven broil burner orifice to
the 1.20 mm (120) orifice (page 10 – page 11).
Check the rangetop and oven for gas leaks
(page 14).
Reassemble the rangetop, door, kick and front
panels.
Remove the kick and front panels (page 13).
Change the broil burner orifice to the 1.20
mm (120) orifice (page 10 – page 11).
Check the oven for gas leaks (page 14).
Reassemble the door, kick and front panels.
Each of the following steps must be completed correctly
for the appliance to function properly. Check off each step
as it is finished.
36'' Pro Harmony models
(PR(G/L/D)xxxWxH(U/C))
Ù Step 1
Ù Step 2
Ù Step 3
Ù Step 4
Change only the front burner orifices to the
1.26 mm (126) orifices (page 8).
Set the valve screws for the front STAR
burners only (page 9).
Check the rangetop for gas leaks (page 14).
Reassemble the rangetop.
Page. 7
Installation procedure
1
2
1
2
Changing the STAR® burner
orifices
Only necessary for converting propane
gas units from 10,000 ft. to 10,200 ft.
Change only the following orifices. All other STAR burners
shall remain the same.
TIP: If a 16 mm hex head bit is not readily available, a
5/8'' hex bit can be selected. Alternatively, a bolt with
5/8'' head either “double-nutted” or tightened into
the chuck of a power driver can be used.
36'' and 48'' Pro Harmony
PR(L/D)xxxWxH(U/C)
All front STAR
All rear STAR burnersRemain unchanged
To prepare the nut driver for the STAR burner orifice
conversions
The foam tape helps to hold the orifice in the end of the
nut driver so it will not fall inside the appliance during
orifice removal or installation.
1. Trim a small piece of the foam tape provided with this
kit (about 1/4'' x 1/2'' / 6 x 12 mm).
2. Place foam tape over the edge of a 7 mm or a 9/32''
socket with 1/4'' nut driver used to replace the burner
orifices, as shown below.
®
burners only
Orifice no.
1.26 mm (126)
3. With the foam tape wrapped nut driver, reach down
through the jet holders and carefully remove the gas
orifice from the STAR burner’s jet holder.
To replace the rangetop STAR burner orifices
To remove the STAR burner orifices
1. Remove the rangetop grates and the burner caps.
2. Use a 16 mm hex head bit for burners labeled ‘D’ or
‘F’. Use a 9 mm hex head bit for burners labeled ‘B’ to
remove the burner venturi from each burner base.
Page. 8
1. Locate the proper STAR burner
orifices included with the kit.
Orifices are stamped with the
orifice diameter size on the side.
2. Replace orifices as indicated in the table.
All front STAR burners only1.26 mm (126)
All rear STAR burnersRemain unchanged
NOTE: All of the replacement orifices in the conversion kit
have straight threads (not pipe threads) and do not
require thread sealing compound.
Disassembling the rangetop
a
b
c
d
Only necessary if an orifice is dropped
Setting the STAR® burner
valve screws
inside the rangetop
9 CAUTION
Shut off the gas supply to the appliance prior to
disconnecting the electrical power.
To disassemble the rangetop
1. To facilitate the removal of the spill tray, remove the T20 torx screws in the front face of the island trim or
backguard.
Only necessary for converting propane
gas units from 10,000 ft to 10,200 ft.
A flat-head screwdriver with an
1/8" [3.0 mm] wide, .020"
[0.50 mm] thickness tip
(included) is used to adjust the
valve screws.
1. Remove the knob from the valve stem by slowly
pulling knob straight out, away from the control panel.
2. Disconnect the igniter. Carefully pull up on the burner
base.
a. Burner base
b. Electrode
c.Igniter housing
d. Igniter wire
5. Carefully remove each burner pedestal.
6. Remove the spill trays by rotating the trays up and out
the back.
7. Remove the heat shield on some models. Some
models have a double-width shield that extends under
the adjacent spill tray.
2. Remove the bezel-mounting
screw located to the right of
the valve stem, using a T-20
torx screwdriver.
3. Insert a 1/8'' flatblade screwdriver
into the hole of the
bezel mounting
screw. Access to the
valve screws through
clearance hole in the
spark module. You
should feel the
engagement of the
screwdriver and the
valve screw.
Page. 9
4. Adjust the valve screw by turning the valve screw
about an 1/8
size. Turn the screw counter-clockwise to make the
simmer flame larger. Adjust the valve screw as little as
required to reach satisfactory simmer results. Due to
normal fluctuations in gas pressure, over-adjustment
of valve screw may affect flame stability.
5. Perform a gas leak test of each orifice and associated
supply tube fittings. See “Checking for gas leaks” on
page 14. Leak-checking should occur after the orifice
conversion is complete, and before the burner is
reassembled and tested.
th
turn clockwise to reduce simmer flame
Changing the broil orifice, on
GAS ranges only
Only necessary for converting propane
gas units from 10,000 ft to 10,200 ft.
9 CAUTION
Removing the backguard assembly
1. Use a T-20 torx screwdriver to remove the screws from
the front and rear panel of the backguard assembly.
After the replacement of the broiler orifice, and
before reassembly of the back panel and backguard to
the range, perform a brief gas leakage check of the
orifice and associated fittings, per the “Checking for
gas leaks” section of these instructions.
NOTE: Dual Fuel ranges have electric ovens and do not
have a broil orifice.
Change only the following oven broil orifices. All other
orifices shall remain the same.
48'' Pro Harmony and 36'' Pro Grand
(PRL48xWxH and PRL36xWxG)
Main oven broil
•48'' Pro Harmony
•36'' Pro Grand
Orifice no.
1.20 mm
(120)
2. Carefully lift the backguard assembly from the range.
Page. 10
Changing the broil burner orifice
Changing the bake orifice, on
1. Remove the broil orifice using a 7/16'' box end
wrench, while restraining the elbow fitting from
rotation using a small adjustable wrench.
IMPORTANT: DO NOT bend the broil burner orifice
bracket. Ensure that the broiler orifice is aligned to the
center of the burner tube inlet.
2. Replace the orifices as indicated in the table.
48'' Pro Harmony and 36'' Pro Grand
(PRL48xWxH and PRL36xWxG)
Orifice no.
GAS ranges only
Only necessary for converting natural gas
units above 5,400 ft. and up to 10,200 ft.
NOTE: Dual Fuel ranges have electric ovens and do not
have a bake orifice.
Change only the following oven bake orifices. All other
orifices shall remain the same.
36'' and 48'' Pro Harmony
(PRGxxxWxH)
Main oven bake burner only2.06 mm (206)
48'' Pro Grand
(PRGxxxWxG)
Auxiliary oven bake burner only 1.85 mm (185)
Removing the oven door
Orifice no.
Orifice no.
Main oven broil
•48'' Pro Harmony
•36'' Pro Grand
NOTE: The replacement broil orifices have straight
threads (not tapered threads) and DO NOT require thread
sealing compound.
3. Perform a gas leakage check of the orifice and
associated supply tube fittings, per the “Check for gas
leaks” section of these instructions.
1.20 mm
(120)
9 CAUTION
•USE CAUTION WHEN REMOVING THE DOOR.
THE DOOR IS VERY HEAVY.
•The oven door is heavy and fragile. Use both
hands to remove or replace the door.
•Failure to grasp the oven door firmly and properly
could result in personal injury and product
damage.
•With the door off, never release the levers and try
to close the hinges. Without the weight of the
door, the powerful springs will snap the hinges
closed with great force.
Page. 11
1. Open the door fully. Flip the hinge clips down for both
sides of the door. A screwdriver may be required to
carefully pry the clip back.
2. Close the door gently until it stops against the hinge
clips. The open hinge clips will hold the door open at
a slight angle, about 30°, from the closed position.
3. Grasp the door firmly on the ends of the door. Lift the
door up and out. There will be some spring resistance
to overcome.
Reinstalling the oven door
1. Hold the door firmly in both hands.
2. Hold the door at a 30° angle from the closed position.
Insert hinges centered evenly into the hinge slots. The
hinges will securely hook into the slots when properly
installed. DO NOT force, bend or twist the door.
3. Open door fully to expose hinges, levers, and slots.
4. Flip the hinge forward until seated on the bracket. A
screwdriver may be required to carefully push the clip
back.
4. Place the door in a safe and stable location.
Page. 12
5. Close and open the door slowly to ensure it is
correctly and securely in place.
Removing the kick and front panels
b
a
1. Remove the kick panel screws using a T-20 torx
screwdriver.
2. Remove the front panel screws using a T-20 torx
screwdriver.
IMPORTANT: DO NOT bend the bake burner tube or
shutter. Ensure that the bake orifice is aligned to the
center of the burner tube inlet.
2. Hand twist the orifice elbow (a) while restraining the
bake orifice (b) from rotation using an adjustable
wrench.
a. Orifice elbow
b. Bake orifice
3. Replace the orifices as indicated in the table and
reattach the gas line.
Changing the bake burner orifice
To change the bake burner orifice
1. Remove the bake gas line using a 13/16'' box end
wrench, while restraining the elbow fitting from
rotation using an adjustable wrench.
36'' and 48'' Pro Harmony
(PRGxxxWxH)
Main oven bake burner only2.06 mm (206)
48'' Pro Grand (PRG48xWxG)Orifice no.
Auxiliary oven bake burner only 1.85 mm (185)
4. Perform a gas leak check of the orifice and associated
supply tube fittings, per the “Check for gas leaks”
section of these instructions.
NOTE: The replacement bake orifices have straight
threads (not tapered threads) and DO NOT require thread
sealing compound.
Orifice no.
Page. 13
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