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SECTION 7: VENTING
17 of 51
Figure 11: Concentric Vertical and Horizontal Vent Termination - Separated Combustion Heater
Vent**
Air Intake*
Concentric
Vent Box
Vertical
Option
10' (3 m)
Maximum
Horizontal
Option
Concentric
Vent Box
Combustion
Air Terminal
Vent Terminal
with Baffle Plate
Flashing
(By Others)
4" (10 cm)
Type B-1Vent
Storm Collar (By Others)
(Attach with 3 sheet metal screws.)
UHAS 150-250:
6" (15 cm) Diameter
Single Wall
UHAS 300-400:
8" (20 cm) Diameter
Single Wall
Vent**
6" (16 cm)
Minimum
12" (31 cm)
Maximum
6" (16 cm) Minimum
12" (31 cm) Maximum
Combustion
Air Terminal
Vent Terminal
with Baffle Plate
4"
(10 cm)
Type
B-1
Vent
Storm Collar (By Others)
(Attach with 3
sheet metal screws.)
Air Intake*
Description Part Number Qty.
Concentric Vent Kit (150 - 250) UHVK1
Concentric Vent Box Top & Side Assembly 90504113 1
Concentric Vent Box Bottom Assembly 90504112 1
Screw #6 x 3/8 Self Drilling 91119100 14
4" Vent Terminal with Baffle Plate 90502102R 1
6" Combustion Air Terminal 90502103 1
Description Part Number Qty.
Concentric Vent Kit (300 - 400) UHVK2
Concentric Vent Box Top & Side Assembly 90504013 1
Concentric Vent Box Bottom Assembly 90504012 1
Screw #6 x 3/8 Self Drilling 91119100 14
4" Vent Terminal with Baffle Plate 90502102R 1
8" Combustion Air Terminal 90502104 1
Model **Vent Diameter
UHA[X]S 150 - 400 4" (10 cm)
Model *Air Intake Diameter
UHA[X]S 150 - 250 4" (10 cm)
UHA[X]S 300 - 400 5" (13 cm)