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UHA UNIT HEATER INSTALLATION OPERATION AND SERVICE MANUAL
12
Figure 8: 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
Vent
Combustion
Air Terminal
Vent Terminal
with Baffle Plate
Flashing
(By Others)
Condensate Trap
to Drain (Optional)
4" Type B-1
Vent
Storm Collar (By Others)
(Attach with 3 sheet metal screws.)
UHA 150-250:
6" Dia. Single Wall
UHA 300-400:
8" Dia. Single Wall
Air Intake*
6" (16 cm)
Minimum
12" (31 cm)
Maximum
Combustion
Air Terminal
Vent Terminal
with Baffle Plate
4"
Type
B-1
Vent
Storm Collar (By Others)
(Attach with 3
sheet metal screws.)
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
UHAS 150 - 400 4" (10 cm)
Model *Air Intake Diameter
UHAS 150 - 250 4" (10 cm)
UHAS 300 - 400 5" (13 cm)