4 18-DE01D1-8
Installer’s Guide
STANDARD CLEARANCES
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CLOSET AND ALCOVE INSTALLATION
A
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.
The hori
z
ontal/ down
f
low
f
urnace model requires
an optional combustible sur
f
ace-mounting base
(model # BAYSUB10ABASEAA)
f
or vertical instal-
lation (i.e., down
f
low con
f
iguration) directly on
combustible materials, re
f
er to Figure
2
.
1
Recommended Support Frame
f
or Down
f
low/
Hori
z
ontal Furnaces
2
Down
f
low Furnace Combustible
Sur
f
ace-Mounting Base
The minimum clearances
f
rom
f
urnace casing
sur
f
aces to combustible materials are
:
-
3
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of:
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-
9
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v
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co
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r
.
-
3
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.
-
3
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3
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pp
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,
w
i
t
h
i
n
6
f
ee
t
of
f
u
r
-
n
a
c
e
.
- For the down
f
low/ hori
z
ontal
f
urnace only
,
w
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(
18
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, 24
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.
DOWNFLOW/ HORIZONTAL FURNACE
SETUP
T
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N
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