PG 14 OF 48M003107 MAY 2017An ongoing program of product improvement mayrequire us to change specifications without notice.WOOD STONE CORPORATION1801 W. Bakerview Rd.Bellingham, WA 98226 USATOLL FREE 800.988.8103TEL 360.650.1111FAX 360.650.1166E-MAIL info@woodstone-corp.comwoodstone-corp.comMountain Series RFGInstallation and Operation ManualVENTINGThe following are the manufacturer’s recommendations for venting the Wood Stone MS (Mountain Series) RFG ovens It isnever appropriate to use “B vent” in any part of an exhaust system connected to a Wood Stone oven All duct material must bemanufactured to the specifications of a grease duct Submit your venting plans to your local authorities before proceeding withyour installation, as there may be additional requirements in your area All non-solid fuel venting systems should be inspected andcleaned at least every 3 monthsTHERE ARE THREE VENTING OPTIONS: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 Thepower ventilator should be rated for a minimum of 300 °F Wood Stone does not recommend the use of an in-line fan A fieldbuilt grease duct, constructed and installed to the specifications of a grease duct as detailed in NFPA 96 or the InternationalMechanical Code, may also be usedA static pressure of -01 inches water column is necessary at the oven flue collar to ensure that flue gas temperatures do notexceed 300 °F at the fan inlet This measurement may be taken by inserting the probe of the magnahelic gauge through theoven doorway, upwards to the oven flue collar NOTE: Double door ovens (models ending in DD), have two flue collars, bothmust be connected and a static pressure of negative 01 inches must be maintained at each collar See table below for CFMrequired to attain the specified static pressureCFM REQUIREMENTS (DIRECT CONNECT)Model CFM requiredWS-MS-4-RFG 400WS-MS-5-RFG 450WS-MS-6-RFG 450WS-MS-7-RFG 450Install the venting system in accordance with the duct manufacturer’s instructions and in accordance with all local codes All fieldbuilt components should be built to the applicable codes and standards and are subject to the approval of the authority havingjurisdictionNOTE: 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 tofacilitate direct connection to a round duct If the oven is to be installed under a hood, it MAY be necessary to remove the roundadapter to properly position the hood This is done by removing the screws that attach the adapter to the oven Please contactWood Stone if you have any questionsCollar I.D.Flue adapterNOTE: MS-4 ovens come standard with a round 8" O.D. collarand do not require the flue adapter for a direct connection.Model Oven Flue Collar I.D. (nominal)WS-MS-5 Mt Adams 10 inchWS-MS-6 Mt Baker 10 inchWS-MS-7 Mt Rainier 10 inch