Wood Stone MOUNTAIN Series User manual

Toll Free 800.988.8103
Tel [phone]
Fax [phone]
www.woodstone-corp.com
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
MOUNTAIN SERIES
Commercial & Residential Stone Hearth Oven
Gas-Fired, Wood-Fired and
Gas/Wood Combination Models
MOUNTAIN SERIES WS-MS-(4, 5, 6, 7)
MOUNTAIN HOME WS-MH-(4, 5)
TRADITIONAL SERIES WS-TS-(5,6)
DOC NO M0014.09 REVISED APRIL 2019
Service Manual

Mountain Series
Service Manual
PG 2 OF 56
M0014.09 APRIL 2019
An ongoing program of product improvement may
require us to change specifications without notice.
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
TOLL FREE 800.988.8103
TEL [phone]
FAX [phone]
E-MAIL [e-mail]
woodstone-corp.com
TABLE OF CONTENTS
TABLE OF CONTENTS
Mountain Series Ovens� � � � � � � � � � � � � � � � � � � � � � � 3
Before You Begin���� � � � � � � � � � � � � � � � � � � � � � � � � � 4
Product Overview� � � � � � � � � � � � � � � � � � � � � � � � � � � 5
Venting � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 6
Wood-Fired Oven Overview� � � � � � � � � � � � � � � � � � � � 7
Wood Oven Troubleshooting � � � � � � � � � � � � � � � � � � � 8
Electrical Diagram (Wood)� � � � � � � � � � � � � � � � � � � � � 9
Gas Oven Overview � � � � � � � � � � � � � � � � � � � � � � � � 10
Operational Overview (Gas)� � � � � � � � � � � � � � � � � � � 11
OPERATIONAL SEQUENCE
W-IR� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 12
RFG � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 13
RFG-IR � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 14
Legacy � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 15
Gas Oven Components� � � � � � � � � � � � � � � � � � � � � � 16
Oven Controllers � � � � � � � � � � � � � � � � � � � � � � � � � � 17
Gas System Components � � � � � � � � � � � � � � � � � � � � 20
Gas Oven Troubleshooting � � � � � � � � � � � � � � � � � � � 22
Burner Troubleshooting� � � � � � � � � � � � � � � � � � � � � � 30
IR Burner Troubleshooting� � � � � � � � � � � � � � � � � � � � 34
Common Repair Procedures � � � � � � � � � � � � � � � � � � 36
Gas Component Diagrams � � � � � � � � � � � � � � � � � � � 39
Electrical Diagrams � � � � � � � � � � � � � � � � � � � � � � � � 43
Parts List� � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 50
Gas Specifications � � � � � � � � � � � � � � � � � � � � � � � � � 52
Electrical Specifications � � � � � � � � � � � � � � � � � � � � � 54
Technical Verification Checklist � � � � � � � � � � � � � � � 55
Limited Warranty � � � � � � � � � � � � � � � � � � � � � � � � � � 56

Mountain Series
Service Manual
PG 3 OF 56
M0014.09 APRIL 2019
An ongoing program of product improvement may
require us to change specifications without notice.
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
TOLL FREE 800.988.8103
TEL [phone]
FAX [phone]
E-MAIL [e-mail]
woodstone-corp.com
MOUNTAIN SERIES OVENS
WOOD STONE OVEN SERVICE MANUAL FOR GAS-FIRED AND WOOD-FIRED
MOUNTAIN SERIES OVENS
FOR WS-MS-(4, 5, 6 AND 7) MODELS
TS-(5, 6) MODELS
ADDITIONAL COPIES AVAILABLE UPON REQUEST
This manual is for use only by qualified service personnel. It is recommended that this oven be
installed, maintained and serviced by qualified professionals. Warning: Improper installation,
adjustment, alteration, service or maintenance can result in property damage, injury or death.
Read the installation, operation and maintenance instructions thoroughly before installing or
servicing this equipment.
!

Mountain Series
Service Manual
PG 4 OF 56
M0014.09 APRIL 2019
An ongoing program of product improvement may
require us to change specifications without notice.
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
TOLL FREE 800.988.8103
TEL [phone]
FAX [phone]
E-MAIL [e-mail]
woodstone-corp.com
BEFORE YOU BEGIN...
INTRODUCTION
This manual primarily covers the Mountain Series (MS) gas-fired, wood-fired and wood/gas ovens� Most of the general and
troubleshooting information applies to other Wood Stone models as well� For specific information regarding other models, please
contact the Wood Stone Service Department� This manual is for use only by Trained and Qualified Service Personnel�
WARNING: Improper installation adjustment, alteration, service or maintenance can result in property damage, injury or death�
Please read and understand all pertinent instructions before attempting to install or perform any kind of service on this equipment�
BE SAFE.
SERVICE DEPARTMENT AND WARRANTY INFORMATION
If you have any questions please call the Wood Stone Service Dept� at 1-800-988-8103� Normal hours are 8 a�m� to 5p�m� Pacific
Standard Time Monday through Friday� After hours and on weekends call and follow the instructions to leave a message on the
emergency service voice mail� A Wood Stone technician will be paged and return your call promptly�
YOU MUST CONTACT WOOD STONE BEFORE PROCEEDING WITH ANY WARRANTY SERVICE.
We encourage you to call whenever any service is performed� By doing this we can direct you toward the best solution to the
problem� It also allows us to check and update the service history we keep for each oven� Our goal is to help you service the
equipment correctly and as efficiently as possible�
Parts are available through Wood Stone� Please contact the factory for pricing� Additional Service Manuals and Installation and
Operation Manual are also available�
The Installation and Operation Manual may also be downloaded from the Wood Stone web site at: www�woodstone-corp�com�

Mountain Series
Service Manual
PG 5 OF 56
M0014.09 APRIL 2019
An ongoing program of product improvement may
require us to change specifications without notice.
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
TOLL FREE 800.988.8103
TEL [phone]
FAX [phone]
E-MAIL [e-mail]
woodstone-corp.com
PRODUCT OVERVIEW
THE FOUR CATEGORIES OF THE MOUNTAIN SERIES OVENS
-W MODELS
Wood-only models use wood as the only heat source� See the Installation and Operation Manual for specific information regarding
the burning of wood�
RFG MODELS
These models have a Radiant flame burner located at the rear or, optionally, on either side of the oven� This burner is designed
to give the appearance of a wood-fire type flame� The burner runs continuously when the oven is turned on� The oven has a
manually controlled Throttle Valve, the Flame Height Control Knob, to raise and lower the flame to control the oven temperature�
RFG-IR MODELS
These models have a Radiant flame burner as well as a thermostatically controlled, Underfloor Infrared (IR) burner� The Radiant
burner is the main heat source in this oven� This burner is designed to give the appearance of a wood-fire type flame� The burner
runs continuously when the oven is turned on� The oven has a manually controlled Throttle Valve to raise and lower the flame to
control the oven temperature� The Underfloor IR Burner is designed to assist in initial heat-up and periods of high production�
W-IR
These are wood-fired models with a thermostatically controlled Underfloor Infrared (IR) burner� The wood fire is the main heat
source� The underfloor burner is designed to assist in initial heat-up and periods of high production�
Gas-fired ovens that include a “-W” in the model number are configured to allow the burning of wood in addition to the gas
burners� See the Installation and Operation Manual for specific information regarding the burning of wood�

Mountain Series
Service Manual
PG 6 OF 56
M0014.09 APRIL 2019
An ongoing program of product improvement may
require us to change specifications without notice.
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
TOLL FREE 800.988.8103
TEL [phone]
FAX [phone]
E-MAIL [e-mail]
woodstone-corp.com
VENTING
VENTING AND INSTALLATION INFORMATION
Complete installation and venting information can be found in the Installation and Operation Manual supplied with the oven�
Additional copies are available online at: woodstone-corp�com or call Wood Stone� Below is a brief overview�
OVEN VENTING
The Wood Stone Mountain Series ovens may be installed under a hood, or direct connected� All ductwork must be constructed
and installed to the specifications of a grease duct� If a hood is used it must be a Type 1 hood (grease-rated)� A power ventilator
listed for restaurant exhaust applications must be provided� If fire suppression is required by the local jurisdiction, the oven must
then be vented with a Type 1 hood�
It is never appropriate to use “B vent” in any part of an exhaust system connected to a Wood Stone oven�
Submit your venting plans to your local authorities before proceeding with your installation, as there may be additional
requirements in your area�
All non-solid fuel venting systems should be inspected and cleaned at least every 3 months�

Mountain Series
Service Manual
PG 7 OF 56
M0014.09 APRIL 2019
An ongoing program of product improvement may
require us to change specifications without notice.
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
TOLL FREE 800.988.8103
TEL [phone]
FAX [phone]
E-MAIL [e-mail]
woodstone-corp.com
WOOD-FIRED OVEN OVERVIEW
WOOD-FIRED OVENS
TEMPERATURE READOUT
The only electrical components on the wood-fired ovens are in the Temperature Readout Display at the front of the oven� Be
aware that these displays are often relocated to an area beside the oven to accomodate kitchen design requirements� The
assembly is made up of three components:
1. A Thermocouple that is installed into the floor of the oven from below�
2. A Temperature Readout Assembly, with settings adjustable between Fahrenheit and Centigrade�
3. A Transformer, available as 120 VAC or 240 VAC� Outputs 12 VAC to power the Readout Display�
TEMPERATURE READOUT COMPONENTS
Readout Assembly Faceplate
Readout Display Thermocouple

Mountain Series
Service Manual
PG 8 OF 56
M0014.09 APRIL 2019
An ongoing program of product improvement may
require us to change specifications without notice.
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
TOLL FREE 800.988.8103
TEL [phone]
FAX [phone]
E-MAIL [e-mail]
woodstone-corp.com
WOOD OVEN TROUBLESHOOTING
Display does not light 1. Breaker to oven tripped or turned off
2. If the breaker is fine, verify proper incoming power at input side of
Transformer� If incoming power is present, verify 12 VAC at output of
Transformer� If 12 VAC present replace temperature readout� If 12 VAC is
not present, replace the Transformer�
Display lights but readout is
erratic or displays ”EEE”
Check that the Thermocouple connections on the readout module are
correct: Red to TC- (negative), yellow to TC+ (positive)�
If the connections are good, remove the Thermocouple wires from
the display� Jumper between TC+ and TC- on the display; the display
should show the ambient temperature� If it does not display the ambient
temperature, replace the readout� If the readout displays the ambient
temperature (when jumpered), replace the Thermocouple�
Note: Some models may include a plug connection between the readout
box and the Thermocouple� If applicable, check this connection� If this
connection is defective, remove and wire the Thermocouple directly�
CRACKING IN THE FLOOR OR DOME OF THE OVEN
Some cracking of the oven refractory, especially hairline cracking, is completely normal and in no way degrades the performance
of the oven� Any abnormal or extreme cracking (larger than 1/8 inch) should be brought to the attention of the Wood Stone
Service Department� Do not attempt any type of repair to the oven refractory unless specifically instructed to do so by the factory,
and then, only with materials supplied by Wood Stone�
Symptom Probable Cause and/or Solution

Mountain Series
Service Manual
PG 9 OF 56
M0014.09 APRIL 2019
An ongoing program of product improvement may
require us to change specifications without notice.
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
TOLL FREE 800.988.8103
TEL [phone]
FAX [phone]
E-MAIL [e-mail]
woodstone-corp.com
ELECTRICAL DIAGRAM (WOOD)
Solid Fuel Only
DATE:
DIAG #: WD051 Rev. 0
3/27/2014
Bellingham, WA [phone] www.woodstone-corp.com
Thermocouple Readout
12 VAC Yellow + Red -
GND
XFMR
110-120 VAC
50-60Hz
wired by others Type K
Thermocouple
Probe
Solid Fuel Only EM-2V
DATE:
DIAG #: WD052 Rev. 0
3/27/2014
Bellingham, WA [phone] www.woodstone-corp.com
Thermocouple Readout
12 VAC Yellow + Red -
TB-A
GND
XFMR
220-240 VAC
50-60Hz
wired by others Type K
Thermocouple
Probe
120 VAC
240 VAC

Mountain Series
Service Manual
PG 10 OF 56
M0014.09 APRIL 2019
An ongoing program of product improvement may
require us to change specifications without notice.
WOOD STONE CORPORATION
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
TOLL FREE 800.988.8103
TEL [phone]
FAX [phone]
E-MAIL [e-mail]
woodstone-corp.com
GAS OVEN OVERVIEW
GAS OVENS - OPERATIONAL OVERVIEW AND COMPONENTS
RFG-IR
IR and Radiant burner
Radiant burner only
RFG
IR burner only
W-IR