Wood Stone WS-MH-RFG-IR Installation And Operation Manual - Oven Venting
Questions? Call Wood Stone at 800-578-6836
10
MH-RFG-IR Installation and Operation Manual
September
2006
Oven Model Series
Flue Collar
Mt. Chuckanut WS-MS-4 8 inch I.D.
Mt. Adams WS-MS-5 10 inch I.D.
Mt. Baker WS-MS-6 10 inch I.D.
Mt Rainier WS-MS-7 10 inch I.D.
Sumas Mtn. WS-MS-8 10 inch I.D.
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 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
OVEN VENTING
proceeding with your installation, as there may be additional requirements in your area.
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 300 degrees F. Use a stack or curb mounted fan. Wood Stone does not recommend
the use of an in-line fan. A single wall chimney/duct connector (of unspecified length) may be
used to connect the appliance to the building heating appliance chimney as described above. Any
single wall ducting should be a minimum of 0.044" stainless steel or 16 ga. mild steel (0.055") and
must maintain a minimum of 18" clearance to combustibles.
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 degrees Fahrenheit 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. Wood Stone provides a port in the flue collar of the oven for insertion of a magnehelic
gauge so the installer can monitor the draft to ensure proper operation of the venting system.
When using a direct connection as described above, the duct must be attached to the oven
flue collar with a full perimeter weld.
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 ovens. See specification sheet on ventilators for Wood Stone ovens.
Continued on the following page.