Service manual

UHD STANDARD DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL
16 of 55
Figure 12: Concentric Vertical and Horizontal Vent Termination - Separated Combustion Heater
Vent**
Air Intake*
Concentric
Vent Box
Vertical
Option
Horizontal
Option
Concentric
Vent Box
Vent**
Combustion
Air Terminal
12" (31 cm) Minimum
from roof to combustion
air terminal
Vent Terminal
with Baffle Plate
Flashing
(By Others)
4" (10 cm)
Type B-1 Vent
Storm Collar (By Others)
(Attach with 3 sheet metal screws.)
UHDS 150-250:
6"
(15 cm)
Diameter
Single Wall
UHDS 300-400:
8"
(20 cm)
Diameter
Single Wall
Air Intake*
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.)
6" (16 cm) Minimum
12" (31 cm) Maximum
10' (3 m)
Maximum
NOTE: Vent supports not
shown. Duct supports
not shown. Duct and
vent supports not
provided by the
manufacturer.
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" (10 cm) Vent Terminal with Baffle Plate 90502102R 1
6" (15 cm) 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" (10 cm) Vent Terminal with Baffle Plate 90502102R 1
8" (20 cm) Combustion Air Terminal 90502104 1
Model **Vent Diameter
UHD[T][M][X]S[R] 150 - 250 4" (10 cm)
Model *Air Intake Diameter
UHD[T][M][X]S[R] 150 - 250 4" (10 cm)
UHD[T][M][X]S[R] 300 - 400 5" (13 cm)