Brant Radiant Heaters DX2 Series Manual page 36

3.0 Installation
• Combustion Air Requirements
Non-contaminated outside air for combustion must be ducted to the heater if any of the
following apply:
• Chemicals such as chlorinated or fluorinated hydrocarbons (typical sources are refrigerants,
solvents, adhesives, degreasers, paints, paint removers, lubricants, pesticides, etc.).
• High humidity.
• Contaminants such as sawdust, welding smoke, etc.
• Negative building pressure.
• Unusually tight construction where there is an air infiltration rate of less the 0.40 air changes per
hour.
Combustion air intake may be located on either the sidewall or roof (see figures 3.26-3.28).
Figure 3.26 • Vertical Outside Air
Supply for Single Heater Intake - Side
View
Figure 3.27 • Horizontal Outside Air
Supply for Single Heater Intake
- Side View
Figure 3.28 • Vertical Outside Air
Supply for Common Intake - Side
View
NOTE: Common intake
heaters must share the
same thermostat.
4" pipe
Air Intake Cap
18 in.
minimum
Flexible Air
Inlet Boot
4" intake pipe
Roof Intake Cap
18 in.
minimum
Flexible Air Inlet Boot
Flexible Air Inlet Boot
4" pipe
Wall
Roof Intake Cap
6" pipe
Flexible Air
Inlet Boot
4" intake pipe
36
DX2 Series
Roof
Burner
Control Box
Burner
Control Box
Roof
Burner
Control Box