Service manual

SECTION 7: VENTING
17 of 59
Figure 10: Concentric Vertical and Horizontal Vent Termination
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
Air Intake*
Storm Collar (By Others)
(Attach with 3
sheet metal screws)
12" (31 cm) Minimum from
roof to combustion air terminal
Flashing
(By Others)
12" (31 cm)
Minimum from
wall to combustion
air terminal
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[T][X]S 150 - 250 4" (10 cm)
UHA[X]S 300 - 400 4" (10 cm)
Model *Air Intake Diameter
UHA[T][X]S 150 - 250 4" (10 cm)
UHA[X]S 300 - 400 5" (13 cm)
- Separated Combustion Heater