Brant Radiant Heaters HL2 series User Manual page 33

HL2 Series
Vent Locations and Clearances:
• Category III venting systems may NOT be common vented, and no other gas units are allowed to be
vented into it.
• 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.
• Horizontal venting sections of the vent pipe on a Category III termination must be installed with a
downward slope from the appliance at a pitch of 1/4 inch per foot. Do not pitch heater.
• 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 terminal must be installed to prevent blockage by snow and protect building materials from
degradation by flue gasses.
• 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.
• Vents must terminate a minimum of 3 feet from a window or door that may be opened, and a non-
mechanical air supply inlet or combustion air inlet into the building.
• Vents must terminate a minimum of 6 feet from a mechanical air supply inlet.
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.
Sidewall Venting Requirements
Figure 3.21 •
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.
3.0 Installation • Vent Location s and Clearances
36 in.
min.*
6 in.
min.*
Sidewall
4" Single-Wall Vent Pipe
B to C Adapter
Single
Double-Wall
Wall Vent
B-Vent
1/4 in. downward
pitch per foot
33
•
Sidewall Venting Requirements
Heater