Operating instructions

14
42D0200
Designer Series Gas Fireplaces
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
There are two basic types of direct-vent installation:
• Horizontal Termination
• Vertical Termination
It is important to select the proper length of vent pipe for the type of termination you choose. It is also
important to note the wall thickness.
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Select the amount of vertical rise desired. All horizontal run of venting must have 1/4" rise for every 12"
of run towards the termination.
You may use up to three 90° elbows in this vent conguration. Refer to Horizontal Termination Congu-
rations on Pages 22 and 23.

Measure the distance from the replace oor to the ceiling. Add the ceiling thickness, the vertical rise in
an attic or second story, and allow for sufcient vent height above the roof line.
 You may use two 45° elbows in place of a 90° elbow. You must follow rise to run ratios when
using 45° elbows. The appliance is approved for use with three 90° elbows maximum or a combination
of 90° and 45° elbows up to a maximum of 270°.
For two-story applications, restops are required at each oor level. If an offset is needed in the attic,
additional pipe and elbows will be required.
You may use a chase with a vent termination with exposed pipe on the exterior of the house. Refer to
Installing Vent System in a Chase below. If pipe is enclosed in chase, it is not exposed.
It is very important that the venting system maintain its balance between the combustion air intake and
the ue gas exhaust. Certain limitations apply to vent congurations and must be strictly followed.

A chase is a vertical boxlike structure built to enclose venting that runs along the outside of a building.
A chase is required for such venting.
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      
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      
    
    
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