Wood Stone MT. CHUCKANUT WS-MS-4-RFG-IR User manual

MOUNTAIN SERIES
Stone Hearth Oven
Dual Burner, Gas-Fired Models
MT. CHUCKANUT
WS-MS-4-RFG-IR, RFG-IR
MT. ADAMS
WS-MS-5-RFG-IR, RFG-IR
MT. BAKER
WS-MS-6-RFG-IR, RFG-IR-(NAP)
MT. RAINIER
WS-MS-7-RFG-IR, RFG-IR
Installation and
Operation Manual
woodstone-corp.com
Revised September 2014
Doc no: M0033.02
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166

2
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
TABLE OF CONTENTS
TABLE OF CONTENTS
MOUNTAIN SERIES� � � � � � � � � � � � � � � � � � � � � � � � � � � � � 3
CAUTIONS AND WARNINGS � � � � � � � � � � � � � � � � � � � � � � � 4
UNLOADING AND MOVING� � � � � � � � � � � � � � � � � � � � � � � � 6
INSTALLATION CLEARANCES � � � � � � � � � � � � � � � � � � � � � � 7
FACADE DETAILS � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 9
OUTDOOR INSTALLATION � � � � � � � � � � � � � � � � � � � � � � � 10
GAS SPECIFICATIONS � � � � � � � � � � � � � � � � � � � � � � � � � � 11
ELECTRICAL SPECIFICATIONS � � � � � � � � � � � � � � � � � � � � 13
OVEN VENTING � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 14
FLUE ADAPTER � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 17
VENTING DO’S AND DON’TS � � � � � � � � � � � � � � � � � � � � � 18
ASSEMBLY � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 26
MANTLE MOUNTING� � � � � � � � � � � � � � � � � � � � � � � � � � � 27
FRONT PANEL ASSEMBLY � � � � � � � � � � � � � � � � � � � � � � � 28
EXTENSION PANEL ASSEMBLY � � � � � � � � � � � � � � � � � � � � 29
STUCCO APPLICATION � � � � � � � � � � � � � � � � � � � � � � � � � 31
CONTROLLER � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 32
INITIAL START-UP � � � � � � � � � � � � � � � � � � � � � � � � � � � � 33
DAILY OPERATION � � � � � � � � � � � � � � � � � � � � � � � � � � � � 34
FLAME HEIGHT CONTROL � � � � � � � � � � � � � � � � � � � � � � � 35
MAINTENANCE � � � � � � � � � � � � � � � � � � � � � � � � � � � � � � 36
PERIODIC THERMAL CLEANING � � � � � � � � � � � � � � � � � � � 37
TROUBLESHOOTING GUIDE � � � � � � � � � � � � � � � � � � � � � � 38
OPERATION SEQUENCE� � � � � � � � � � � � � � � � � � � � � � � � � 39
120 VAC ELECTRICAL DIAGRAM� � � � � � � � � � � � � � � � � � � 40
240 VAC ELECTRICAL DIAGRAM� � � � � � � � � � � � � � � � � � � 41
INTERLOCK DIAGRAM� � � � � � � � � � � � � � � � � � � � � � � � � � 42
LIMITED WARRANTY� � � � � � � � � � � � � � � � � � � � � � � � � � � 43

Mountain Series
Installation and Operation Manual
3
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
MOUNTAIN SERIES
INSTALLATION AND OPERATION MANUAL
THE WOOD STONE MOUNTAIN SERIES
STONE HEARTH COOKING EQUIPMENT
WS-MS-(4, 5, 6, 7)-RFG-IR MODELS (INCLUDES MS-6 NAPLES MODEL)
GAS-FIRED OVEN
ADDITIONAL COPIES AVAILABLE UPON REQUEST

4
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
CAUTIONS AND WARNINGS
IN THE EVENT OF A POWER FAILURE, NO ATTEMPT SHOULD BE MADE TO OPERATE THE OVEN.
WOOD STONE MOUNTAIN SERIES
GAS-FIRED OVEN OPERATING INSTRUCTIONS
IMPORTANT: It is recommended that this oven be installed, maintained and serviced by authorized
professionals.
FOR YOUR SAFETY: Consult your local gas supplier for a statement outlining a procedure to be followed
in the event you smell gas. Post the statement in a prominent location.
READ ALL INSTRUCTIONS BEFORE INSTALLING AND USING THIS APPLIANCE
Please read this entire manual before you install the oven. Failure to follow instructions may result in
property damage, bodily injury or even death. Contact your local building or fire officials about restrictions
and installation inspection in your area.
RETAIN THIS MANUAL FOR FUTURE REFERENCE
Additional copies of this manual at woodstone-corp�com�
For prompt responses to service/maintenance questions, call us at @ 1-800-988-8103�
WHEN THE OVEN IS NOT PROPERLY INSTALLED, A FIRE MAY RESULT.
TO REDUCE RISK OF FIRE, FOLLOW THE INSTALLATION INSTRUCTION.
FOR YOUR SAFETY: Do not store or use gasoline or other flammable vapors or liquids in the vicinity of
this or any other appliance. Also, always keep the area under and around this appliance free and clear of
any and all combustible materials.

Mountain Series
Installation and Operation Manual
5
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
CAUTIONS AND WARNINGS
A MAJOR CAUSE OF OVEN RELATED FIRES IS A
FAILURE TO MAINTAIN REQUIRED CLEARANCES
TO COMBUSTIBLE MATERIAL. IT IS OF UTMOST
IMPORTANCE THAT THIS OVEN BE INSTALLED ONLY
IN ACCORDANCE WITH THESE INSTRUCTIONS.
CAUTION: DISCONNECT POWER TO THE OVEN BEFORE SERVICING OR CLEANING.
WARNING: This product must be installed by a licensed plumber or gas fitter when installed within the
Commonwealth of Massachusetts.
Wood Stone’s gas-fired ovens have been tested and approved by Intertek Testing Services,
and are ETL Listed to ANSI Z83.11b - 2009, CSA 1.8b-2009
and to NSF/ANSI Standard 4 - 2009.
SAVE THE INSTRUCTIONS
WARNING: Improper installation, adjustment, alteration, service or maintenance can cause property
damage, injury or death. Read the installation, operating and maintenance instructions thoroughly before
installing or servicing this equipment.

6
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
UNLOADING AND MOVING
3. USING A PALLET JACK
Once the oven has been removed from the delivery vehicle, it can easily
be moved on flat surfaces using a pallet jack� To lift the oven with a pallet
jack, remove the front and rear angle iron stabilizers from the base of the
oven stand and place a stout 4x4 post through the fork pocket as shown�
THE OVEN IS VERY TOP-HEAVY. MOVING THE OVEN UP OR DOWN A
RAMP OR INCLINE ON A PALLET JACK IS NOT SAFE!
DO NOT TURN THE OVEN ON ITS SIDE!
Contact Wood Stone if the oven must be turned on its side for specific instructions� Moving a Wood Stone oven can
present challenges to even the most experienced riggers� Take your time, use your head, secure the proper equipment
and make safety your first priority� Please don’t hesitate to call the factory for technical support�
DELIVERY NOTE: The customer will receive an Oven Shipping Notification when the oven leaves the Wood Stone
factory�This will include a PRO# and a trucking company contact number� Wood Stone recommends that you confirm the
delivery date/time with the trucking company before committing to heavy equipment and/or labor� Our goal is a smooth
and safe delivery�
4x4 post
LIFTING THE OVEN
1. USING A CRANE
The oven arrives with four lifting eyes attached� When craning a Wood
Stone oven, use a spreader bar with a two-legged sling rigged on each
end� The spreader bar should be of a sufficient length to keep the sling
from contacting the oven�
NOTE: Once lifting eyes are no longer needed, remove the lifting eyes
one at a time AND BE SURE TO REPLACE THE BOLTS THAT ATTACH
THE OVEN TO THE STAND.
2. USING A FORKLIFT
Be sure to use a forklift rated, and forks the minimum length, as shown
in the table below� If necessary, fork extensions must be used so the
forks extend through the fork lift pockets to the opposite side of the
stand� Lift from either side as shown� Do not lift from the front or back�
The oven is very top heavy, so spread the forks as far apart as possible�
Model Oven
Approximate
shipping
weight
Minimum
fork length
required
Required
forklift
capacity
WS-MS-4 Mt� Chuckanut 2,400 lbs� 4' 5,000 lbs�
WS-MS-5 Mt� Adams 3,600 lbs� 5' 6,000 lbs�
WS-MS-6 Mt� Baker 4,600 lbs� 6' 6,000 lbs�
WS-MS-7 Mt� Rainier 6,000 lbs� 7' 9,000 lbs�

Mountain Series
Installation and Operation Manual
7
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
INSTALLATION CLEARANCES
CLEARANCES
1. The Wood Stone gas-fired oven must have a minimum 1" clearance to combustibles from all sides, and 14"
clearance to combustibles from the top (see INSTALLATION CLEARANCES section on next page)� If building a
facade that will contact the oven, use completely non-combustible materials*�Please note that standard Drywall (or
Sheetrock) is considered a combustible�
2. Any facade materials 6" to either side of the oven doorway and above must be constructed of non-combustible
building materials�
3. Install this oven only on a non-combustible floor surface� (Cet appareil doit être installé sur une surface de plancher
non-combustible�) The non-combustible floor surface should extend 36" out in front of the oven, and extend 30" to
either side of the oven doorway�
*When non-combustible building materials contact the body of the appliance, the clearances to combustibles are
transferred to those non-combustibles�
NOTICE: For stucco-ready appliances (model numbers ending in “-S”), the same clearances as described above apply�
Non-combustible stucco mix must be used and applied to a minimum thickness of 1"�
IF THIS OVEN IS NOT PROPERLY INSTALLED A FIRE MAY RESULT. TO REDUCE THE RISK OF FIRE, FOLLOW THESE
INSTALLATION INSTRUCTIONS. A MAJOR CAUSE OF OVEN RELATED FIRES IS FAILURE TO MAINTAIN REQUIRED
CLEARANCES (AIR SPACES) TO COMBUSTIBLE MATERIALS. IT IS OF UTMOST IMPORTANCE THAT THIS OVEN BE
INSTALLED ONLY IN ACCORDANCE WITH THESE INSTRUCTIONS.
WARNING: DO NOT PACK REQUIRED AIR SPACES WITH INSULATION OR OTHER MATERIAL.
PLEASE READ THIS ENTIRE MANUAL BEFORE YOU INSTALL THE OVEN. FAILURE TO FOLLOW INSTRUCTIONS
MAY RESULT IN PROPERTY DAMAGE, BODILY INJURY OR EVEN DEATH. CONTACT YOUR LOCAL BUILDING OR
FIRE OFFICIALS ABOUT RESTRICTIONS AND INSTALLATION INSPECTION IN YOUR AREA.
!WARNING: Installation and servicing of this product could expose you to glasswool/ceramic
fibers as well as calcium silicate dust. ALWAYS WEAR RESPIRATORY AND EYE PROTECTION
WHEN INSTALLING OR SERVICING THIS APPLIANCE. Please read this entire manual before
you install the oven. Failure to follow instructions may result in property damage, bodily
injury or even death. Contact your local building or fire officials about restrictions and
installation inspection in your area.

8
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
INSTALLATION CLEARANCES
THE FOLLOWING CLEARANCE INFORMATION APPLIES TO ALL
WOOD STONE MOUNTAIN SERIES OVENS
1" side clearance to combustible
building materials.
14" top clearance to combustible
building materials.
Any facade materials 6" to either side of
the doorway and above must be NON-
COMBUSTIBLE.
Note: 0" side and top clearance to non-
combustible materials. However, the
respective clearances to combustibles
are transferred to those non-
combustibles.
14"
Combustible building material
Non-combustible building material
Any facade wall 6" to either side of the
oven doorway and above MUST be of
non-combustible construction with no
exceptions�
For use only on noncombustible floors
(installér sur un plancher incombustible
seulement). Non-combustible floor
surface AND provided with a non-
combustible floor covering at least 30"
to each side of, and 36" in front of the
door opening.

Mountain Series
Installation and Operation Manual
9
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
FACADE DETAILS
Wood Stone Mountain Series (MS-) ovens carry an ETL Sanitation listing� The oven interior only is ETL listed to NSF/
ANSI Standard 4� This means that the surfaces of the oven which are meant to be left exposed after the facade has
been put in place have been evaluated from the standpoint of sanitation and food safety and found to comply with NSF/
ANSI Standard 4� To operate the oven in accordance with NSF/ANSI Standard 4, only pizza and bread products may be
cooked directly on the floor of the oven� Other types of food may be cooked on or in pans, or other suitable containers to
prevent spillage onto the oven deck�
Go to www.woodstone-corp.com for detailed instructions for constructing a facade around a Wood Stone oven�
A removable service panel or storage box allows
access for service of gas and electrical components.
If this panel is not used, access and air intake of
equivalent dimensions MUST be provided at the
front of the oven.
If using an exhaust hood over the oven, make sure
your facade allows proper access for removal of the
hood filters.
Hatched areas shall not be exposed after installation of facade�
Any facade wall 6" to either side of the oven doorway and
above MUST be of non-combustible construction with no
exceptions�

10
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
OUTDOOR INSTALLATION
OUTDOOR INSTALLATIONS
The Mountain Series (MS-) model ovens are ETL approved for outdoor installation� When installed outdoors, the open
area beneath the oven must be enclosed, with the exception of the perforated area on the front service panel (or storage
box) for air intake� The oven may be installed in a weatherproof enclosure� If so be sure to maintain all clearances and
adhere to the installation requirements included in this manual�
KEEP THE AREA AROUND AND BENEATH THE OVEN CLEAR OF GRASS, LEAVES
AND OTHER COMBUSTIBLE MATERIALS.
Wood Stone also offers the following options to enclose the area beneath the oven
Stand Wrap Kit
Lower Lagging Kit

Mountain Series
Installation and Operation Manual
11
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
GAS SPECIFICATIONS
Model SV-1 SV-2
WS-MS-4-RFG-IR-NG 3�5" 5"
WS-MS-5-RFG-IR-NG 3�5" 4�75"
WS-MS-6-RFG-IR-NG 3�5" 4�75"
WS-MS-7-RFG-IR-NG 3�5" 4�6"
Model SV-1 SV-2
WS-MS-4-RFG-IR-LP 9" 7"
WS-MS-5-RFG-IR-LP 9" 8"
WS-MS-6-RFG-IR-LP 9" 8"
WS-MS-7-RFG-IR-LP 9�2" 9�5"
The Wood Stone Gas ovens are equipped with a 3/4" NPT gas connection located at the rear left of the oven� Have a
licensed gas installer provide the hook-up and test all fittings and pipe connections for leaks� Use approved gas leak
detectors (soap solutions or equivalent) over and around the fittings and pipe connections� DO NOT USE FLAME TO
TEST FOR LEAKS!
SV-1 is the gas control valve that operates the Underfloor Infrared (IR) burner� The manifold pressure test port is 1/8: NPT
pugged tap located on the IR burner manifold�
SV-2 is the gas control valve that operates the interior radiant burner� SV-2 is located at the rear left beneath the oven�
The manifold pressure test port for the radiant burner is a 1/8" NPT plugged tap located at the base of the T-junction
between the SV-2 and the radiant/interior burner�
NOTE: Gas valves are shipped in the ON position�
The burner manifold pressure has been adjusted and tested at the factory�A variety of factors can influence this pressure,
so be sure to test the burner manifold pressure and adjust the valve as necessary to achieve the specified pressure�
NOTE: Maximum inlet gas pressure: 1/2 psi (14 inches W.C.)
This oven requires no modifications or adjustments for use at high altitudes.
Factory specified individual burner manifold pressures (W.C.) for RFG-IR models equipped to burn
Natural Gas (NG)
Factory specified individual burner manifold pressures (W.C.) for RFG-IR models equipped to burn
Propane (LP & HLP)
Model SV-1 SV-2
WS-MS-4-RFG-IR-HLP 9" 7"
WS-MS-5-RFG-IR-HLP 9" 8"
WS-MS-6-RFG-IR-HLP 9" 8"
WS-MS-7-RFG-IR-HLP 9�2" 9�5"

12
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
GAS SPECIFICATIONS
Hourly Natural Gas (NG) BTU/hr input rates for Wood Stone RFG-IR models
Hourly Propane (LP & HLP) BTU/hr input rates for Wood Stone RFG-IR models
Model BTU/hr Input Rate
WS-MS-4-RFG-IR-NG 125,000
WS-MS-5-RFG-IR-NG 188,000
WS-MS-6-RFG-IR-NG 188,000
WS-MS-6-RFG-IR-NAP-NG 218,330
WS-MS-7-RFG-IR-NG 220,000
Model BTU/hr Input Rate
WS-MS-4-RFG-IR-LP 110,000
WS-MS-5-RFG-IR-LP 159,000
WS-MS-6-RFG-IR-LP 159,000
WS-MS-6-RFG-IR-NAP-LP 218,330
WS-MS-7-RFG-IR-LP 227,000
Note: For MS-4, 5, 7-RFG-IR-NAP-LP models there is no change in BTU/hr�
Wood Stone recommends that the appliance’s individual shutoff valve (supplied by others) be left readily
accessible. Wood Stone also recommends that inspection and maintenance of the burners and gas piping
connections of this appliance be performed at regularly scheduled intervals and only by professional gas
appliance service agencies.
GAS CODE LIMITATIONS
The installation of this appliance must conform with local codes, or in the absence of local codes, with the National Fuel
Gas Code, ANSI Z223�1 or The Natural Gas installation Code CAN/CGA-B149�1 as applicable, including:
The appliance and its individual shutoff valve (supplied by others) must be disconnected from the gas supply piping
system during any pressure testing of that system at test pressures in excess of 1/2 psi (3�45 kPa)�
The appliance must be isolated from the gas supply piping system by closing its individual manual shutoff valve (supplied
by others) during any pressure testing of the gas supply piping system at test pressure, equal to or less than 1/2 psi
(3�45 kPa)�
Note: For MS-4, 5, 7-RFG-IR-NAP-NG models there is no change in BTU/hr�
Model BTU/hr Input Rate
WS-MS-4-RFG-IR-HLP 125,000
WS-MS-5-RFG-IR-HLP 188,000
WS-MS-6-RFG-IR-HLP 188,000
WS-MS-6-RFG-IR-NAP-HLP 218,330
WS-MS-7-RFG-IR-HLP 227,000

Mountain Series
Installation and Operation Manual
13
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
ELECTRICAL SPECIFICATIONS
Incoming power should be connected to the terminal strip located in the transformer junction box beneath the oven
(see diagram below)� The standard oven model comes configured for connection to a 120 VAC circuit� The oven can
be ordered configured for connection to a 240 VAC circuit� Always refer to the equipment data plate beneath the oven
to verify the proper voltage� The voltage is also specified on the transformer box cover� Never connect an oven rated
120 VAC to a 240 VAC circuit or vice versa� It is recommended that the oven be connected to its own individual branch
circuit� Have a licensed electrician connect the oven to the appropriate 120 VAC or 240 VAC circuit� Electrical diagrams
are located directly to the right, behind the removable service/intake panel of the appliance as well as inside the control
box� Electrical diagrams are also located near the end of this manual� See the FRONT PANEL ASSEMBLY section of this
manual for the location of the transformer housing�
ELECTRICAL RATINGS
120 VAC, 1.1A, 50/60 Hz
240 VAC, 1.1A, 50/60 Hz
ELECTRICAL CODE LIMITATIONS
Electrical grounding: This appliance must be electrically grounded in accordance with local codes, or in the absence of
local codes, with the National Electrical code, ANSI/NFPA 70 or the Canadian Electrical Code, CSA C22�1 as applicable�
Terminal strip location

14
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
VENTING
The following are the manufacturer’s recommendations for venting the Wood Stone MS (Mountain Series) RFG-IR ovens�
It is never appropriate to use “B vent” in any part of an exhaust system connected to a Wood Stone oven� All duct material
must be manufactured to the specifications of a grease duct� 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�
There are three venting options�
VENTING OPTION 1
Direct Connection: A Listed building heating appliance chimney, also listed as a grease duct as described in NFPA 96,
connected directly to the oven flue collar and provided with a power ventilator listed for restaurant appliance exhaust�
The power ventilator should be rated for a minimum of 300 °F� Wood Stone does not recommend the use of an in-line
fan� A field built grease duct, constructed and installed to the specifications of a grease duct as detailed in NFPA 96 or
the International Mechanical Code, may also be used�
A static pressure of -0�1 inches water column is necessary at the oven flue collar to ensure that flue gas temperatures
do not exceed 300 °F at the fan inlet� This measurement may be taken by inserting the probe of the magnahelic gauge
through the oven doorway, upwards to the oven flue collar� NOTE: Double door ovens (models ending in “-DD”), have two
flue collars� Both must be connected and a static pressure of negative 0�1 inches must be maintained at each collar� See
table below for CFM required to attain the specified static pressure�
CFM REQUIREMENTS
Model CFM required
WS-MS-4-RFG-IR 400
WS-MS-5-RFG-IR 450
WS-MS-6-RFG-IR 450
WS-MS-7-RFG-IR 450
Model Oven Flue Collar I.D. (nominal)
WS-MS-5 Mt� Adams 10 inch
WS-MS-6 Mt� Baker 10 inch
WS-MS-7 Mt� Rainier 10 inch
Collar I.D.
Flue adapter
Install the venting system in accordance with the duct
manufacturer’s instructions and in accordance with all local codes�
All field built components should be built to the applicable codes
and standards and are subject to the approval of the authority
having jurisdiction�
NOTE: If your MS-5, MS-6 or MS-7 oven is ordered from Wood Stone without a hood, it will have a round flue adapter
installed to facilitate direct connection to a round duct� If the oven is to be installed under a hood, it MAY be necessary
to remove the round adapter to properly position the hood� This is done by removing the screws that attach the adapter
to the oven� Please contact Wood Stone if you have any questions�
NOTE: MS-4 ovens come standard with a round 8" O.D. collar
and do not require the flue adapter for a direct connection.

Mountain Series
Installation and Operation Manual
15
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
OVEN VENTING
INSTALLATION VIEWS OF A WOOD STONE HOOD
Allow sufficient
opening between
any facade and the
inside edge of the
front of the hood to
allow for filter removal
and hood cleaning.
Any front facade wall
should not be built
any higher than the
top of the oven to
allow for access to
the filter.
VENTING OPTION 2
A Listed Type 1 exhaust hood or one that is constructed and installed in accordance with all relevant Local and National
Codes� Wood Stone offers eyebrow-type hoods designed specifically for Wood Stone ovens� See specification sheet on
ventilators for Wood Stone ovens� Note that the notch of the hood is even with the front edge of the oven� The hood must
be installed in accordance with the hood manufacturer’s instructions, and with the Standard for Ventilation Control and
Fire Protection of Commercial Cooking Operations, NFPA 96 and/or the applicable local and national codes� Refer to the
exhaust hood manufacturer’s recommendations for inspection, maintenance and cleaning�
VENTING OPTION 3
Exhaust from Wood Stone gas-fired ovens (RFG-IR models) can be vented using one of the previously mentioned
methods OR, when vented with a hood, can be combined with exhaust from other equipment, assuming the common
duct meets the construction requirements listed in Option 1� The system must be properly engineered to provide proper
airflow to hood serving the oven�
It is never appropriate to use “B vent” in any part of an exhaust system connected to a Wood Stone oven. All
duct material must be manufactured to the specifications of a grease duct� Due to the possibility of sparks entering the
duct, exhaust systems serving solid fuel equipment MUST NOT be combined with exhaust systems serving other (non-
solid fuel) equipment�
VERY IMPORTANT!
WOOD STONE RECOMMENDS THAT YOU CONSULT WITH A QUALIFIED MECHANICAL ENGINEER
AND SUBMIT YOUR VENTING PLANS TO LOCAL CODE AUTHORITIES
BEFORE PROCEEDING WITH INSTALLATION.
Flat face hood Curved face hood

16
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
OVEN VENTING
FIRE SUPPRESSION
Check with your local code officials to see if fire suppression is required in your area� If fire suppression is required, you
must vent the oven using a Type 1 hood constructed and installed in accordance with NFPA 96� If fire suppression is
required, Wood Stone recommends providing protection for the hood duct collar and plenum� The fusible link in the hood
must be rated at 450 °F minimum� Wood Stone offers Listed exhaust hoods for our ovens that are pre-piped for ANSUL
R-102 fire suppression� Wood Stone does not recommend aiming any fire suppression nozzles into the cooking chamber
of the oven� All installations are subject to the approval of the local authority having jurisdiction�

Mountain Series
Installation and Operation Manual
17
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
FLUE ADAPTER
MOUNTAIN SERIES OVENS: FLUE ADAPTER
The flue adapter unit is designed to facilitate connection to a round duct� Use the stainless steel screws and sealant
provided to attach the flue adapter to the exhaust outlet on the oven if it is not already installed� NOTE: MS-4 ovens come
standard with a round 8" O�D� collar and do not require the flue adapter for a direct connection�
Note: If using a Selkirk or other modular-type duct, attach according to the manufacturer’s instructions� Otherwise, the
duct must be attached with a full perimeter weld� All duct must be grease-rated duct� If the oven is going to be enclosed,
the flue adapter and exhaust outlet must be wrapped with an insulating material approved for use with a grease-duct�
Flue adapter
Flue adapter attached
to oven flue collar
If the oven is to
be enclosed, wrap
with an approved
insulation.

18
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
VENTING DO’S AND DON’TS
VENTING DO’S AND DON’TS
When installing a Wood Stone Mountain Series oven there are some basic guidelines to follow regarding oven venting
that will help ensure proper operation and performance of the gas burners on the oven� These guidelines will also help
prevent damage to the oven's gas and electrical components due to improper venting and installation� Damage caused
by improper venting and installation is not covered by the oven warranty� This information applies to all Wood Stone
Mountain Series (MS) ovens equipped with one or more gas burners�
Most Wood Stone Mountain Series ovens are built into some sort of wall structure or enclosure�This creates the potential
for different venting scenarios that can be detrimental to the operation and performance of the oven burners� Here are
some basic rules that to follow that will ensure a properly functioning oven installation� Illustrated examples are included
on the following pages�
RULE 1
The ONLY pathway for air to enter the space beneath the oven should be at the front of the oven at the perforated
opening in the oven Service Panel provided with the oven, or on ovens equipped with an optional Storage Box, through
the perforations provided on the oven Storage Box� This will eliminate the chance of air movement or cross drafts
beneath the oven that can disrupt the oven burners�
RULE 2
DO NOT block the flow of air through the front Service Panel� It is required to provide necessary combustion air to the
oven burners� Airflow and service access MUST be provided from the front of the oven only at this Service Panel� DO
NOT relocate the oven air intake (see Rule 1).
RULE 3
To ensure proper venting of the oven, you must use an appropriate exhaust fan as described in this manual� There must
also be an adequate source of make-up air provided to your kitchen space—the room that the oven opens into� The
make-up air supply should not point directly at the oven� Other than the oven Service Panel, do not provide make-up air
or other ventilation into an enclosure that surrounds the oven (see Rule 1). Without proper make-up air the oven, (or any
gas equipment), will not vent and operate correctly�
Please review the illustrations on the following pages.

Mountain Series
Installation and Operation Manual
19
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
VENTING DO’S AND DON’TS
DIRECT CONNECT VENTING EXAMPLES
Example 1 shows a proper installation�
The enclosure around the oven is
completely sealed so that the only air
entering the space beneath the oven
comes through the oven Service Panel�
Equal air pressure inside and
outside of oven room
Exhaust
flow
direction
is normal
Stud wall
Facade
surface
Air intake area
on removable
service panel
properly
exposed
Intake air flows
through designed
intake vents in the
service panel to
oven burners
1 Acceptable venting
Example 2 is not acceptable because
the combustion air intake is blocked,
preventing combustion air from reaching
the oven burners� The burners will not
function properly, and will lead to damage
of oven components�
2. Unacceptable venting
Exhaust
flow
direction is
normal
Facade material
improperly placed
over oven air
intake
Insufficient
combustion air
resulting in burner
problems & poor
oven performance
Equal air pressure
inside and outside of
oven room

20
Mountain Series
Installation and Operation Manual
An ongoing program of product improvement may require us to change
specifications without notice. WS-MS-(4, 5, 6, 7)-RFG-IR,
Revised September 2014. Doc no: M0033.02
[email protected] or visit woodstone-corp.com
wood stone corporation
1801 w. bakerview rd.
bellingham, wa 98226 usa
tf. 800.988.8103
t. 360.650.1111
f. 360.650.1166
VENTING DO’S AND DON’TS
DIRECT CONNECT VENTING EXAMPLES
Example 3 shows an incorrect
installation where an additional vent
was added to the wall behind the oven,
creating an air pressure difference
causing air movement beneath the oven
and disrupting the operation of the oven
burners� This air movement can be so
severe as to cause a downdraft, pulling
the exhaust down the oven flue and
backwards through the burners, leading
to heat damage of oven components�
3. Unacceptable venting
Neutral room
air pressure
Exhaust flow
direction is
reversed
Equal air pressure
inside and outside of
oven room
Low pressure is created
by HVAC or any air
moving equipment
outside the oven room
Exhaust air is pulled
backwards through
oven burners
An added vent
intended to increase
air supply
Airflow to oven is
altered as air moves
from normal to low
pressure
Example 4 shows an incorrect
installation where the enclosure
surrounding the oven is open to the
attic space above the ceiling� Air
can move rapidly through the space
enclosing the oven to the lower
pressure area within the attic space�
This can cause a downdraft situation
at the oven, pulling air and heat
backwards through the oven burners,
leading to damage of oven components�
4. Unacceptable venting
Air flow Low pressure area
Exhaust
flow
direction is
reversed
Combustion air is
diverted from oven
burners because
room is open to a
low pressure area.
Exhaust air is
pulled backwards
through oven
burners.
False ceiling