Manual 2100-515B
Page
13 of 23
FIGURE 8
W48A12, W60A12, W48L12, W60L12
MOUNTING INSTRUCTIONS
6
1
2
"
6
1
2
"
2
1
8
"
7
8
"
3
1
8
"
4"
Ty
p.
4"
Ty
p.
1"
3"
16"
16"
16"
16"
16"
1
7
8
"
A
B
D
C
11
1
2
"
20"
C
E
12.000
TO
P
R
ET
U
R
N
AIR
O
PEN
IN
G
DUCT
R
EQ
U
IR
ED
D
IM
EN
SIO
N
S T
O
M
AIN
T
AIN
1/
4"
M
IN.
CL
E
A
RA
NCE
F
RO
M
C
O
M
B
U
S
T
IBLE M
A
T
E
R
IALS
R
EQ
U
IR
ED
D
IM
EN
SIO
N
S T
O
M
AIN
T
AIN
RE
CO
M
M
E
NDE
D 1
" CL
E
A
RA
NCE
F
RO
M
C
O
M
B
U
S
T
IBLE M
A
T
E
R
IALS
AB
C
D
E
20 1/2
8 1/2
1
20 1/4
22
10
1 3/4
19 1/2
N
O
T
ES:
SU
PPLY AIR
W
al
l Openi
ng and H
ol
e Loc
ati
on V
iew
R
ight S
ide V
iew
T
O
P F
LASH
IN
G
AT
T
IM
E O
F
IN
ST
ALLAT
IO
N
.
SILIC
O
N
E C
AU
LKIN
G
BE PLAC
ED
BEH
IN
D
IT
IS R
EC
O
M
M
EN
D
ED
T
H
AT
A BEAD
O
F
MIS-
1444 A
T
H
E SID
E M
O
U
N
T
IN
G
F
LAN
G
ES AN
D
U
N
D
ER
TO
P
.
W
A
LL
S
T
RUCT
URE
F
O
U
R
SID
ES O
F
SU
PPLY
AIR
D
U
C
T
IS R
EQ
U
IR
ED
F
R
O
M
C
O
M
B
U
S
T
ABLE
1/
4"
CL
E
A
RA
NCE
O
N A
LL
MAT
E
R
IALS
H
EAT
ER
AC
C
ESS
PAN
EL
F
O
AM
AIR
SEAL
R
AIN
F
LASH
IN
G
SU
PPLIED
SEAL WIT
H
BEAD
O
F
C
A
U
LKIN
G
ALO
N
G
E
N
TI
R
E
L
E
N
G
TH
O
F
W**A U
N
IT
SH
O
W
N
, W**L U
N
IT
C
O
N
T
R
O
LS AN
D
H
EAT
ER
AC
C
ESS
IS
O
N
O
P
P
O
S
ITE
(L
E
FT) S
ID
E
.
R
eturn Openi
ng
S
uppl
y Openi
ng
Adj
us
tabl
e
si
de-
to-
si
de
for
lo
ca
ting
flanges
on
uni
t
