KOZI
D
IRECT
V
ENT
G
AS
S
TOVE
15
PLANNING YOUR INSTALLATION
As mentioned on the previous pages, there are basically two types of Direct Vent System
installations: vertical and horizontal termination. Confirm that the desired installation is
allowed by referencing the maximum vertical rise and maximum horizontal run with Figs. 6-
7.
During the process of planning your venting installation, you will be required to know the
proper vent length to select according to your specific needs. For horizontal installations,
determine the minimum clearance from the rear of the unit to the wall. Remember to take
into consideration the thickness of the wall itself
. All horizontal venting must have a ¼”
rise per foot of run towards the terminal cap.
Determine the amount of vertical rise
required for "vertical-to-horizontal" type installations.
When working with vertical installations, determine the length of vent pipe required by
measuring the distance from the unit flue outlet to the ceiling, the ceiling thickness, the
vertical rise in the attic or second story, and an allowance to satisfy clearance requirements
above the roofline.
If the application calls for a two story “through the floor” installation, the use of fire stops
is mandatory at each floor level. Additional pipe and elbows will be required if an offset
is needed. Venting terminals shall not be recessed into a wall or siding.
IMPORTANT
The Gas Appliance And Venting System Must Be Vented Directly To The
Outside Of The Building, In Accordance With All Regulatory Requirements,
And Never Be Attached To A Chimney Serving A Separate Solid Fuel Or Gas
Burning Appliance.
Each Direct Vent Appliance Must Use Its Own Separate
Vent System. Common Vent Systems Are Prohibited.
All Venting Installations Using Simpson Dura-Vent Direct Vent System
Model DV-GS, Must Be In Compliance With The Venting Instructions And
Requirements Specified By Simpson Dura-Vent.
Safety Precautions For The Installer:
1. Wear Gloves And Safety Glasses For Protection.
2. Exercise Extreme Caution When Using Ladders Or
Working On Roof Tops.
3. Make Yourself Aware Of The Locations Of All
Electrical Wiring Within The Walls And Ceiling.
