FIGURE 4B
W30A, W30L, W36A, W36L
Mounting Instructions
2
C
D
C
1
2"
1
2"
1
2"
1
2"
1
2"
B
2
8"
1
4"
4
11 16
"
4
11 16
"
4" Typ.
"
1 8
A
7 8
"
7 8
"
4" Typ.
3
7 8
"
E
9
1 16
"
4
7 8
"
RET
UR
N AIR
SILIC
ONE CAU
LKING BE PLACED
BEHIN
D
SUPPLI
ED
NO
TES:
ENT
IR
E LEN
GTH
OF T
OP.
THE SI
DE M
OUN
TIN
G FL
ANGES AN
D
UND
ER
1/4" CL
EARANC
E ON ALL
DUCT
OF
CA
UL
KIN
G ALON
G
PANEL
FOAM AIR SEAL
WA
LL S
TRUCTURE
FOUR
SID
ES OF SU
PPLY
AIR
DU
CT
IS
REQUIR
ED
FROM C
OMBUST
ABLE
MAT
ERIAL
S
RAIN F
LASHIN
G
TO
P
SUPPLY AIR
OPENIN
G
Right
Side V
iew
HEAT
ER AC
CESS
TOP F
LASHIN
G AT T
IME OF
IN
STALL
ATION
.
SE
AL
W
IT
H B
EA
D
IT
IS
REC
OMMEND
ED T
HAT
A BEAD OF
W
AL
L
Wall
Opening and H
ole Location View
17 5/8
4 5/8
16 7/8
8 3/8
A
9 7/8
29 7/8
Re
tu
rn
Op
en
ing
4 7/16
3 1
1/16
1/4" MI
N. CLEAR
ANCE
FROM
28 3/8
E
D
5 3/8
B
CO
M
BU
ST
IB
LE
M
AT
ER
IA
LS
C
RECOMM
ENDED 1" CLEA
RANCE FROM
REQUIRE
D DIMENSIONS
TO M
AINTAIN
CO
M
BU
ST
IB
LE
M
AT
ER
IA
LS
REQUIRE
D DIMENSIONS
TO M
AINTAIN
Supp
ly Ope
ning
W**A
UNIT
SHOWN, W**L U
NIT
CON
TROLS AN
D H
EAT
ER
AC
CESS
IS ON
OPPO
SIT
E (L
EFT
) SID
E.
MIS-3820
Manual 2100-678
Page
10 of 24
