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3.0
Installation
•
Combustion Air Requirements
This heater has a factory preset air orifice for proper combustion air supply. If combustion air is to be
provided for a tightly closed area, 440 mm
2
free air opening must be provided for each kW of heater
input.
Non-contaminated air for combustion must be ducted to the heater if chlorinated or fluorinated
contaminants, high humidity, and other contaminants such as sawdust or welding smoke are present in
the area where the heater is installed, or if the building has a negative pressure.
Combustion air intake may be located on either the sidewall or the roof. See Figures 3.25 - 3.27.
Roof Intake Cap
Roof
46 cm Min.
Burner
Control Box
Flexible Air Inlet Boot
10 cm Pipe
Wall
Air Intake Cap
Flexible Air Inlet Boot
10 cm Pipe
Burner
Control Box
Roof
Flexible Air
Inlet Boot
Roof Intake Cap
46 cm Min.
15 cm Pipe
10 cm Pipe
10 cm Pipe
Burner
Control Box
Figure 3.25
•
Vertical Outside Air
Supply for Single Heater
-Side View
Figure 3.26
•
Horizontal Outside Air
Supply for Single Heater
- Side View
Figure 3.27
•
Vertical Outside Air
Supply for Double Heater
- Side View
NOTE:
Common intake
heaters
must
share the
same thermostat.
NOTICE
Combustion Air Requirements
28
EDX
Series