13
An ongoing program of product improvement may require us to change
specifications without notice.
MH-W-IR
Revised November 2009
Wood Stone Corporation
1801 W. Bakerview Rd.
Bellingham, WA 98226 USA
Toll Free (800) 578-6836
Tel (360) 650-1111
Fax (360) 734-0223
Info@woodstonehome.com
or visit
www.woodstonehome.com
Mountain Series Installation and Operation Manual
VentinG the appLianCe
vENTING
The following are the manufacturer’s recommendations for venting the Wood Stone MH (Mountain Home Series) W-IR. It
is never appropriate to use “B vent” in any part of an exhaust system connected to a Wood Stone appliance. All ducting
material must be Listed to UL 103 and 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.
Model Series
Flue Collar
Mt. Chuckanut
WS-MH-4
8 Inch O.D.
Mt. Adams
WS-MH-5
10 Inch O.D.
Mt. Baker
WS-MH-6
10 Inch O.D.
Mt. Rainier
WS-MH-7
10 Inch O.D.
When using a direct connection as described above, the duct must be attached to the appliance flue collar with
a full perimeter weld, or a Listed connector.
Install 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.
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 Appliances.
See specification sheet on ventilators for Wood Stone Appliances.
THERE ARE TWO OPTIONS:
1. A power ventilated building heating appliance chimney, listed to UL 103, also listed as a grease duct, connected
directly to the appliance flue collar. The power ventilator (fan) must be rated for a minimum of 450 degrees F.
Use a stack or curb mounted fan. 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 -0.14 inches water column is necessary at the appliance flue collar to ensure that flue gas
temperatures do not exceed 450 degrees Fahrenheit (F) at the fan inlet. The CFM required to attain this static
pressure will depend on the configuration of your particular installation but will probably be between 500 and
700 CFM. This pressure measurement may be taken by inserting the end of the probe through the oven doorway,
upward to the oven flue collar.
VENTING THE APPLIANCE
