21
COMBUSTION AND VENTILATION AIR (cont.)
FIGURE 18
DEDICATED VENTING THROUGH
CHIMNEY WITH “B-1” VENT
Combustion Air
FIGURE 17
FRES
H
A
I
R
IN
LET
ST
-
A1220
-
0
9-
01
1
.
STA
N
DARD
3
”
FLUE
CO
NN
ECT
I
O
N.
2
. 4”
ADAPTER
-
OPT
I
O
N
AL
S
EE
N
ATI
ON
AL FU
E
L GAS C
O
D
E
F
O
R SIZI
N
G
O
PTI
ON
S
1
.
2
.
ST-A1220-09
