Brant Radiant Heaters DX2 Series Manual page 32

3.0 Installation •
Horizontal Venting (Category III)
Vent Locations and Clearances:
• Vent must terminate a minimum of 4 feet below, 4 feet horizontally from, or 1 foot above any window
or door that may be opened or gravity air inlet into the building.
• Vent must terminate a minimum of 3 feet above any forced air inlet that is located within 10 feet.
• The bottom of the vent terminate must be located a minimum of 12 inches above grade level and
must extend beyond any combustible overhang. Vents adjacent to public walkways must terminate a
minimum of 7 feet above grade level.
• The vent cap must be a minimum of 6 inches from the sidewall of the building.
• Vent must be a minimum of 36 inches below or extend beyond any combustible overhang.
Never join two sections of double wall vent pipe within one horizontal vent system as it is impossible to
verify that inner pipes are completely sealed.
Figure 3.22 • Sidewall Venting Requirements
Building Overhang*
Sidewall Vent Cap
Wall Thimble
*Vent must extend beyond any combustible overhang if the vent is less than 36 in. below the combustible overhang.
36 in.
min.*
6 in.
min.*
Sidewall
B to C Adapter
Double-Wall Single-Wall
B Vent Vent
1/4 in. downward
pitch per foot
32
DX2 Series
Heater