SECTION 6: VENTING
Figure 6: Separated Combustion Heater - Vertical and Horizontal Vent Termination
12" (31 cm) Minimum from air inlet to vent termination (may be horizontal 
or vertical clearance).
Air Intake* | Vent |
| |
Vertical |
|
Option | Horizontal |
| |
90° | Option |
| |
Bend | Air Intake |
|
|
| Vent |
|
|
| Condensate |
|
|
| Trap to Drain |
Model | Vent Diameter | Terminal P/N | |
|
|
| (Optional) |
UHAS 150 - 400 | 4" (10 cm) | 90502102 | |
Model | *Air Intake Diameter | Terminal P/N |
|
UHAS 150 - 250 | 4" (10 cm) | 90502102 | Listed Thimble through |
UHAS 300 - 400 | 5" (13 cm) | 90502105 | Combustible Wall |
|
|
|
12" (31 cm)
Minimum from air inlet to vent termination (may be horizontal or vertical clearance).
Air Intake
Termination
Vent
Termination
12" (31 cm) Minimum from wall to vent termination.
Note: Vent supports not shown
Figure 7: Concentric Vent Box
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