SECTION 7: V
ENTING
17 of 47
Fi
g
ure 11: Separated Combustion Heater - Vertical and Horizontal Vent Termination
Fi
g
ure 12: Concentric Vent Box
Model
Air Intake &
Vent Diameter
Part Number
UHD[X]S 75 - 125
4" (10 cm)
90502102
4" (10 cm) Single
W
all Vent Pipe
(By Others)
Seal joint
b
etween single wall
and Type B
v
ent with silicone sealant.
Use 3 sheetmetal
screws e
q
ually
spaced around joint.
Use 3 sheetmetal
screws e
q
ually
spaced around collar.
Concentric
Vent Box
6" (15 cm) Single
W
all Inlet Air Pipe
(By Others)
One piece of 4" (1
0 cm) diamet
er, 1/4" (6 cm) air
space t
ype
“B”
v
ent. Selkir
k Model R
V or e
q
ui
v
alent.
(By other
s)
Com
b
ustion Air
to Heater
Toward
Outside
Exhaust
from Heater
Summary of Contents for UHD 125
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Page 29: ...SECTION 9 GAS PIPING 21 of 47 Figure 14 Gas Connection...
Page 43: ...SECTION 14 TROUBLESHOOTING 35 of 47 14 1 General...
Page 54: ...UHD LOW PROFILE DUCT FURNACE INSTALLATION OPERATION AND SERVICE MANUAL 46 of 47...
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