UHD S
TANDARD
D
UCT
F
URNACE
I
NSTALLATION
O
PERATION AND
S
ERVICE
M
ANUAL
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)
Summary of Contents for UHD 150 series
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Page 27: ...SECTION 9 GAS PIPING 19 of 55 Figure 13 Gas Connection ...
Page 47: ...SECTION 14 TROUBLESHOOTING 39 of 55 14 1 General ...
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