6
6.0
DIRECT VENT RECOMMENDATIONS
The following Direct Vent recommendations are based on data from the field and laboratory
testing.
a) The minimum inside bend radius for the vent is 12”.
b) The appliance must be located within the heated space.
c) The combustion air supply must not be insulated for the last 48” before the burner.
d) A combustion air damper kit is recommended for areas of extreme cold (-30
O
C).
e) Interior oil tanks are recommended.
f) The oil filter must never be placed outdoors.
g) The vent should be as short as possible with minimum bends.
h) The vent terminal should not be placed on the building exterior side facing high
prevailing winds.
i) In extremely cold climates, ice may have to be removed from the terminal on a regular
basis.
j) Natural wood and stucco exterior building finishes may be affected by exhaust gases.
7.0 TERMINAL INSTALLATION
Make sure you have all necessary components
1. Determine the terminal location.
2. Cut a 6 1/4“ round hole through the wall (slightly larger than the O.D. of the terminal).
3. Remove the terminal air adapter from the termination.
4. From the outside of the building, insert the outer section through the hole until rests
against the wall. See figure 1.
Figure 1 – Terminal installation (Step 1 to 4)
Wall
Terminal
Outer Wall
