Specifications

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 May 2015. Doc no: M0033.03
[e-mail] 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.