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Installation <br /> qualified installers only) 13 <br /> Vent Requirements <br /> • The gas appliance and vent system must be vented directly to the outside of the building, and never <br /> be attached to a chimney serving a separate solid fuel or gas-burning appliance. Each direct vent <br /> gas appliance must use its own separate vent system. <br /> • In addition to the requirements listed here, follow the requirements provided with the vent. <br /> • When the vent passes through a wall a wall thimble is required. When the vent passes through a <br /> ceiling a support box or firestop is required. When the vent passes through the roof, a roof flashing <br /> and storm collar are required. Follow the instructions provided with the vent for installing these items. <br /> NOTE: Wall thimbles may have different dimensions than what is required by this heater. <br /> • The vent must maintain the required clearance to combustible materials to prevent a fire. Do not fill <br /> air spaces with insulation. <br /> Minimum Clearance Above, Below or Side of Vent <br /> Top Vent Configuration 1" <br /> Rear Vent Configuration 1" <br /> • Installation instructions for Simpson Dura-Vent may be found at www.duravent.com <br /> Drafting Performance <br /> This direct vent appliance requires natural draft to operate (similar to a wood stove or other heating appliance). Draft <br /> can be adjusted using the included restrictor. The restrictor settings detailed in the manual should be followed <br /> (variations may occur depending upon installation parameters). <br /> Many factors may negatively influence the draft of the appliance. Travis Industries will not be responsible for improper <br /> draft due to factors such as trees, hills, buildings, obstructions, excessive wind, extreme hot or cold outdoor <br /> temperatures, restrictive vent terminations, or influence from mechanical systems. <br /> Altitude Considerations <br /> • Failure to adjust the air shutter properly may lead to improper combustion which can create a safety <br /> hazard. Consult your dealer or installer if you suspect an improperly adjusted air shutter. <br /> • This heater has been tested at altitudes ranging from sea level to 6,000 feet (1,800 M). In this testing <br /> we have found that the heater, with its standard orifice, burns correctly with just an air shutter <br /> adjustment. <br /> ©Travis Industries 4/19/23- 1443 Greenfield GSR2 <br />