Viking RDGSU2005BSB User manual

Service
Manual
D3 Gas
Cooktops
Preferred Service
RDGSU2005BSB
RDGSU2065BSB
SMC-0026
JUNE 2012
®
This manual is to be used by qualied appliance technicians only. Viking
does not assume any responsibility for property damage or personal
injury for improper service procedures done by an unqualied person.
This Base Manual covers general and
specic information including, but not
limited to the following models:

Table of Contents
B ©2012 Viking Preferred Service
Important Information ..................................................... 3
Safety Information.................................................... 3
Warnings .................................................................. 4
Power Failure........................................................ 4
General Information........................................................ 5
Warnings (continued) ............................................... 5
Electrical Requirements ........................................... 5
Gas Requirements ................................................... 5
Gas Connection .................................................... 5
Gas Requirements (continued) ................................ 6
Pressure Regulator:.............................................. 6
Rigid Connections:................................................ 6
Proper Lighting and Shutdown Instructions .......... 6
Model / Serial Tag Location...................................... 7
Model Number Breakdown ................................... 7
Serial Number Breakdown.................................... 7
Operation........................................................................ 8
Burner Operation ..................................................... 8
Burner Automatic Reignition .................................... 8
Rear, Center, and Front Burners.............................. 8
Typical Burner / Iris Ignition Setup ........................... 8
Removal of stainless steel top ................................. 9
Disassembly ................................................................... 9
Burner Box Components........................................ 10
Burner base removal...............................................11
Igniter removal ....................................................... 13
Orce spud removal............................................... 13
Iris Spark Module removal ..................................... 14
Gas valve removal ................................................. 15
Troubleshooting............................................................ 16
Iris Spark Module ................................................... 16
Single Spark Module.............................................. 16
Igniter ..................................................................... 17
Dual gas valve switch ............................................ 17
Schematic..................................................................... 18
Wiring Diagram............................................................. 19

!
DANGER!
WARNING!
CAUTION!
WARNING!
CAUTION!
Important Information
©2012 Viking Preferred Service C
Safety Information
We have provided many important safety
messages in this manual and on the appliance.
Always read and obey all safety messages.
This is the safety alert symbol.
This symbol alerts you to hazards that can kill
or hurt you and others. All safety messages will
be preceded by the safety alert symbol and the
word “DANGER”, “WARNING”, or “CAUTION”.
These words mean:
IMMEDIATE HAZARDS WHICH WILL RESULT IN
SEVERE PERSONAL INJURY OR DEATH.
Hazards or unsafe practices which COULD result in
severe personal injury or death.
Hazards or unsafe practices which COULD result in
minor personal injury or product or property damage.
All safety messages will identify the hazard, tell
you howto reduce the chance of injury, and tell
you what can happen if the instructions are not
followed.
SAVE THESE INSTRUCTIONS
REVIEW ALL SERVICE INFORMATION IN THE APPROPRIATE SERVICE MANUAL AND
TECHNICAL SHEETS BEFORE BEGINNING REPAIRS.
Pride and workmanship go into every product to provide our customers with quality products. It
is possible, however, that during its lifetime, a product may require service. Products should be
serviced only by a qualied service technician that is familiar with the safety procedures required
in the repair and who is equipped with the proper tools, parts, testing instruments, and the
appropriate service manual.
To avoid risk of serious injury or death, repairs should
not be attempted by unauthorized personnel.
VIKING will not be responsible for any injury or
property damage from improper service procedures.
If performing service on your own product, you must
assume responsibility for any personal injury or
property damage which may result.
Technical support for authorized servicers:
1-800-914-4799
Address your written correspondence to:
Viking Preferred Service
1803 HWY 82 West
Greenwood, MS 38930

WARNING!
WARNING!
WARNING!
WARNING!
WARNING!
WARNING!
Important Information
C ©2012 Viking Preferred Service
Warnings
Read and follow all instructions before using
this appliance to prevent the potential risk of
re, electric shock, personal injury, or damage
to the appliance as a result of improper usage
of the appliance. Use appliance only for its
intended purpose as described in this manual.
To ensure proper and safe operation: appliance
must be properly installed and grounded by a
qualied technician. DO NOT attempt to adjust,
repair, service, or replace any part of your
appliance unless it is specically recommended
in this manual. All other servicing should be
referred to a qualied servicer.
Make sure that incoming voltage is the same
as unit rating. An electric rating plate specifying
voltage, frequency, wattage, amperage, and
phase is attached to the product.
Power Failure
If power failure occurs, the electric igniters
will not work. No attempt should be made to
operate the appliance during a power failure.
Momentary power failure can occur unnoticed.
The cooktop is affected only when the power
is interrupted. When it comes back on, the
cooktop will function properly without any
adjustments.
This appliance shall not be used for space heating.
This information is based on safety considerations.
To avoid risk of property damage, personal injury
or death; follow information in this guide exactly to
prevent a re or explosion. DO NOT store or use
gasoline or other flammable vapors and liquids in
the vicinity of this or any appliance.
BURN HAZARD
To avoid risk of injury, DO NOT touch the glass. The
cooktop will get hot during usage.
FOR YOUR SAFETY
If not installed, operated and maintained in
accordance with the manufacturer’s instructions,
this product could expose you to substances in
fuel or fuel combustion which can cause death
or serious illness and which are known to cause
cancer, birth defects or other reproductive harm.
For example, benzene is a chemical which is
part of the gas supplied to the cooking product.
It is consumed in the flame during combustion.
However, exposure to a small amount of benzene
is possible if a gas leak occurs. Formaldehyde and
soot are by-products of incomplete combustion.
Properly adjusted burners with a bluish
rather than yellow flame minimize incomplete
combustion.
ELECTRICAL GROUNDING INSTRUCTIONS
The cooktop must be electrically grounded in
accordance with local codes or, in the absence
of codes, with the ANSI/NFPA No. 70-latest
edition. Installation should be made by a licensed
electrician. This appliance is equipped with a
three-prong grounding plug for your protection
against shock hazard and should be plugged
directly into a properly grounded receptacle. DO
NOT cut or remove the grounding prong from the
plug.
For personal safety, this appliance must
be properly grounded. DO NOT under any
circumstances cut or remove the third (ground)
prong from the power plug.
BURN OR ELECTRICAL SHOCK HAZARD
To avoid risk of injury or death, make sure all
controls are OFF and COOL before cleaning.
Failure to do so can result in burns or electrical
shock

WARNING!
CAUTION!
WARNING!
CAUTION!
General Information
©2012 Viking Preferred Service 5
Warnings (continued)
For Your Safety
If you smell gas:
1. Shut off gas to appliance.
2. Extinguish any open flame.
3. If odor continues, keep away from the
appliance, immediately call your gas supplier or
your re department.
Before placing the cooktop into operation, always
check for gas leaks with a soapy water solution
or other acceptable method. DO NOT USE AN
OPEN FLAME TO CHECK FOR LEAKS.
Electrical Requirements
There is no connection necessary beyond
plugging the unit into a properly polarized,
grounded 120 volt, 60Hz, 15 amp circuit. A
minimum of 120 VAC is required for proper
operation of gas ignition systems. DO NOT
use a GFI circuit. This circuit, however,
MUST be grounded and properly polarized.
The unit is equipped with 16-3 SPT2 power
cord..
• A standard 120V/60 Hz, 15 amp circuit, 3
wire ground, 3 prong plug is equipped.
• A minimum of 120 VAC is required for proper
operation of gas ignition systems. The circuit
must be, MUST be properly grounded and
polarized.
IMPORTANT: It is recommended to have
the electrical wiring and installation of your
cooktop connected by a qualied technician /
installer.
NOTE: If electrical power is not supplied or
is interupted, the burners will have to be lit
manually with a match.
Gas Requirements
Gas Connection
• The RDGSU cooktops are shipped natural
gas, and manufactured for use with
natural gas or LP/Propane gas. Check the
rating plate located on the bottom of the
burner box for type of gas needed, an LP
conversion kit is supplied with the unit.
• To convert to natural gas or LP/Propane
gas, contact a qualied service technician.
• The installer must use a flexible connector
of at least 1/2" I.D. (1.3 cm) NPT and
comply with ANSI Z21.41 and Z21.69
standards.
Conversions should only be performed by an
authorized service technician.
Conversion must be performed by a qualied
installer, service agency, or the gas supplier in
accordance with the manufacturer's instructions.
Failure to follow instructions could result in serious
injury or property damage.
IMPORTANT:The gas supply (service) line
must be the same size or greater than the
inlet line of the cooktop. All cooktops use a
1/2" (1.3cm) NPT (Sch40) inlet.
• Sealant on all pipe joints must be resistive
to LP/Propane gas.
Manual shut-off valve:
• The supply valve must be installed in the
gas service line ahead of the appliance
and regulator in the gas stream. It should
be positioned where it can be reached
quickly in the event of an emergency.
• In Massachusetts: A "T" handle type
manual gas valve must be installed in
gas supply line to the appliance.

General Information
6©2012 Viking Preferred Service
• The regulator supplied with the RDGSU
cooktops must be installed before any gas
connections are made. It is preset for use
with natural gas. This must be converted
for use with LP/Propane gas.
• Manifold pressure should be checked with
a manometer. Natural gas requires 5.0 "
WCP (water column pressure) and LP/
Propane requires 10.0" WCP. Incoming
line pressure upstream for the regulator
must be 1" WCP or higher than the
manifold pressure in order to check the
regulator.
• The regulator used on this cooktop can
withstand a maximum input pressure of
1/2 PSI (14" WCP). If the line pressure
is in excess of that amount a step-down
regulator will be required.
• The manual shut-off valve and pressure
regulator of these cooktops must be
disconnected from the gas supply piping
system during any pressure testing of that
system at pressures in excess of 1/2PSI
(3.45kPa).
• The cooktop 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 pressure equal to or less
than 1/2 PSI (3.45kPa).
Pressure Regulator:
Gas Requirements (continued) Rigid Connections:
• Incoming gas is brought from an intake
pipe at the rear of the unit to the pressure
regulator; then to the manifold pipe for
distribution. The intake pipe and shut-off
valve are not supplied. The intake pipe and
the shut-off valve should be connected to
the regulator to complete the connection.
In Massachusetts: This appliance must be
installed with a 36" (3 foot) long flexible gas
line.
• The alignment of the valves should be
checked after connecting the cooktop to
the gas supply to be sure the manifold pipe
has not been moved. A misalignment may
cause the valve knob stem to rub on the
control panel, resulting ina gas leak at the
valve.
• Installer-supplied intake pipes should be
checked visually for any foreign matter
before installing in a service line.
Proper Lighting and Shutdown Instructions
To ignite electric igniters on the surface
burners :
1. Turn the knob counterclockwise to any
position.
2. Upon ignition of the surface burner, turn
the knob to the desired position (HI, MED,
or LOW).
3. To shutdown the burner, turn knob
clockwise to the OFF position.
In case of failure, shut the gas OFF using the
installer supplied manual shut-off valve.
IMPORTANT: NEVER reuse old connectors
when installing this cooktop.

General Information
©2012 Viking Preferred Service 7
Model / Serial Tag Location
Serial Number
Month
Day
Year of Manufacture
Viking Designer Series
Cook Top
Five Burner
200 = 30”Wide
260 = 36”Wide
05 10 12 C00036178
Gas
RDGSU2005BSS
D3 Stainless Steel
Model Number
Breakdown
Serial Number
Breakdown
Model / Serial tag is located
underneath cooktop next to gas
inlet line.

Operation
8©2012 Viking Preferred Service
Burner Operation
All burners are ignited by electronic ignition.
There are no open flame, "standing" pilots.
Burner Automatic Reignition
To light the burners, push and turn the
appropriate control knob counterclockwise
to the desired position. This control is a
gas valve with an electronic switch/spark
module physically mated to the gas valve.
Burners will ignite at any "ON" position with
the automatic re-ignition system. If the flame
goes out for any reason, the burners will
automatically reignite if the gas is still flowing.
When gas is permitted to flow to the burner
(all positions except "OFF"), the electronic
spark module sends signal to igniter, causing
it to spark. This sparking should result in a
clicking sound until burner lights, if there is
no sound and burner does not light, turn off
control and try another burner. If no burners
light (click), check that the unit is plugged
in and that the fuse or circuit breaker is not
blown or tripped.
Rear, Center, and Front Burners
Push in and turn the control knob counter-
clockwise to the desired setting. The control
knobs can be turned to any setting, as there
are no "xed" positions between "HI" and
"Simmer".
Within a few moments, enough gas will
have travelled to the burner to ignite. When
the burner lights, turn the control knob to
any position to adjust flame size. Setting
the proper flame height for the desired
cooking process and selecting the correct
cooking vessel will result in superior cooking
performance, while also saving time and
energy.
NOTE: The igniter may click a number
of times before the burner ignites, this is
normal.
120 VAC
(Black)
Neutral
(White)
Ground
(Green)
Typical Burner / Iris Ignition Setup
Typical wiring for Iris Single Ignition system
is shown below, multiple burner valves are
wired together in series on the input side and
output goes to the respective igniter for each
burner.

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Shut-off gas valve supplying gas to cooktop prior to removal and
disassembly.
WARNING!
Disassembly
©2012 Viking Preferred Service 9
Removal of stainless steel top
1. Disconnect power from unit by unplugging 120 vac power cord.
2. Turn gas shut-off valve to the OFF position to remove supply gas from going to cooktop.
3. Remove grates, burner caps and burner heads from cooktop, placing them in a secure
location to prevent damage to parts and customers home.
4. Remove the two screws from each burner as shown in illustration below.
5. After removing these ten phillips head screws, lift stainless steel top off of cooktop and place
in a secure area to prevent damage to top and customer's home.

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Shut-off gas valve supplying gas to cooktop prior to removal and
disassembly.
WARNING!
Disassembly
10 ©2012 Viking Preferred Service
Left Front
Valve & Spark
Module
Left Rear
Valve & Spark
Module
Right Rear
Valve & Spark
Module
Right Front
Valve & Spark
Module
Dual Center
Valve w/
Switch
Single Spark
Module for
dual valve
Left Front
Burner Base
Left Rear
Burner Base
Right Rear
Burner Base
Right Front
Burner Base
Center Burner
Base
Burner Box Components
Igniter

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Shut-off gas valve supplying gas to cooktop prior to removal and
disassembly.
WARNING!
Disassembly
©2012 Viking Preferred Service 11
Burner base removal
The burner bases are mounted on a support bracket which in turn is mounted to the burner box.
1. Disconnect Power from cooktop.
2. Turn gas supply off going to cooktop, in future steps you will be removing gas lines, it is
imperative that gas supply is turned all the way off to prevent gas leaking out.
3. Remove Stainless steel top, see Page 9 for procedure.
4. Remove gas line connection from both burner bases, see photo below.
5. With gas lines disconnected, remove bracket bolts from underneath cooktop burner box.
DANGER!
Failure to fully engage the gas shut-off prior to the following procedures could result in injury, property
damage and possibly death.

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Shut-off gas valve supplying gas to cooktop prior to removal and
disassembly.
WARNING!
Disassembly
12 ©2012 Viking Preferred Service
6. Disconnect igniter wires from both burners, you can now remove the burners still mounted to
the support bracket.
7. Turn sub-assembly upside down to remove the two bolts holding the burner base to the
support bracket.
Threaded bolts go through
support bracket into the
burner base mounting holes,
indicated by arrows.
8. If you are replacing the burner base you will have to transfer the orce spud, igniter and clip
to the new base, see appropriate sections to accomplish their removal.

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Shut-off gas valve supplying gas to cooktop prior to removal and
disassembly.
WARNING!
Disassembly
©2012 Viking Preferred Service 13
1. Disconnect electrical power from cooktop
2. Remove Stainless steel top, see Page 9 for
procedure.
3. To remove igniter, pull clip outward as
shown in photos below.
4. Once clip is removed, igniter will slide out of
slot where clip was previously locked into.
Igniter removal
Burner Base
View from
underneath
burner base
with clip and
igniter still
installed.
Orce spud removal
1. Remove grates, burner caps and
burner heads, place in a secure area to
prevent any damage to components and
customers home.
2. Remove burner orce spud with socket
and ratchet, see photo below.
Remove orce spud
with socket and ratchet

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Shut-off gas valve supplying gas to cooktop prior to removal and
disassembly.
WARNING!
Disassembly
14 ©2012 Viking Preferred Service
Iris Spark Module removal
1. Disconnect electrical power from cooktop
2. Remove Stainless steel top, see Page 9 for
procedure.
3. Remove input connector and output wire
connection from Iris spark module.
4. Lift Iris spark module straight up and off of
gas valve
5. The Iris spark module is positioned by
tting over the gas valve shaft and then
snaps onto gas valve screw heads, the
module will pull right off. When installing
back on gas valve the screw heads pop
into the plastic mounting holes, all is
illustrated below.
Top view of
gas valve
Arrows show bolt heads that Iris
spark module snaps on to.
Bottom view of Iris spark module

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Shut-off gas valve supplying gas to cooktop prior to removal and
disassembly.
WARNING!
Disassembly
©2012 Viking Preferred Service 15
Gas valve removal
DANGER!
Failure to fully engage the gas shut-off prior to the following procedures could result in injury, property
damage and possibly death.
1. Disconnect Power from cooktop.
2. Turn gas supply off going to cooktop, in
future steps you will be removing gas lines,
it is imperative that gas supply is turned all
the way off to prevent gas leaking out.
3. Remove Stainless steel top, see Page 9 for
procedure.
4. Remove Iris spark module, see Page 14.
5. Disconnect output gas line connection, see
photo below.
Disconnect line and pull away from
valve being careful not to damage line
or valve.
6. When gas line has been removed, the
next step is to remove the bolt underneath
the manifold that secures the valve to the
manifold.
Remove bolt, making sure
that rubber seal between bolt
head and manifold is retained
for re-installation
7. At this time pull gas valve straight up and
out of manifold, being careful to retain
the upper seal that goes between the gas
valve body and manifold, if valve is being
replaced a new seal will be included with
the new valve..
Upper seal
between
valve and
manifold
Lower seal
between
bolt and
manifold

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
WARNING!
Troubleshooting
16 ©2012 Viking Preferred Service
Iris Spark Module
1. Check for presence of 120 VAC between
black wire (L1) and white wire (neutral)
of spark module, this voltage should be
present whenever power is connected to
the cooktop.
2. Check that white wire (neutral) has no
voltage to green wire (ground). If there
is voltage between neutral and ground,
unplug cooktop from 120 VAC source and
go to step 4 below.
3. If there was no voltage between neutral
and ground check that voltage between
the black wire (L1) and the green wire
(ground) is 120 VAC.
4. If any of the voltages checked above were
incorrect, verify that wall socket polarity /
ground are incorrect and have consumer
correct faulty source wiring by a licensed
electrician.
5. If all voltages are good and module fails
to spark when power applied, replace
module after verifying igniter and wire to
igniter are good.
Single Spark Module
120 VAC
(Black)
Neutral
(White)
Ground
(Green)
1. L1 input power to the Single spark
module is supplied through the micro
switch on the dual gas valve assembly.
This voltage goes to the bottom lug as
shown in photos below. Verify voltage
when dual gas valve turned to any
position other than OFF.
2. Make sure that ground tab, shown below
in photos, has a tight screw to chassis,
which supplies earth ground to the
module.
3. Neutral is supplied to the top lug as
shown below and when checking voltage
in step 1 above it should be checked
between the neutral and L1 lugs as
shown.
4. If input voltage is good but module
doesn't supply spark, replace module
after verifying igniter and wire going to
igniter are good.
Output to
Igniter
Ground
tab
L1 Input
Bottom lug
Neutral Input
Top lug

To avoid risk of electrical shock, personal injury, or death, disconnect electrical power source to unit, unless test
procedures require power to be connected. Discharge capacitor through a resistor before attempting to service.
Ensure all ground wires are connected before certifying unit as repaired and/or operational.
WARNING!
Troubleshooting
©2012 Viking Preferred Service 17
Igniter
1. Remove output wire from Iris Spark
module, using an ohmmeter check
continuity from the wire just removed to
the tip of the igniter, should read 0 ohms.
Remove
the output
connection
from Iris
spark
module and
connect
one end of
ohmmeter to
wire.
The other ohmmeter lead goes to the tip of
the igniter.
2. If the ohmeter reading is incorrect isolate
the issue to the wire or the igniter.
Dual gas valve switch
1. The micro-switch on the dual gas valve is
part of the gas valve assembly. whenever
you turn gas valve to any position other
than OFF, the microswitch N.O. contact
and Common contacts will complete the
circuit to supply 120 VAC to the Single
Spark Module.
2. There should be 120 VAC on the common
terminal whenever the power cord is
connected to wall socket.

Wiring Diagrams
18 ©2012 Viking Preferred Service
L1
N
RDGSU2605BSS Schematic

Wiring Diagrams
©2012 Viking Preferred Service 19