SBN71-120 thru 85-390, SBD30-150/199 TANK TYPE COMMERCIAL
GAS WATER HEATER SERVICE HANDBOOK
t
n
e
m
tr
a
p
e
D
g
n
i
n
i
a
r
T
l
a
c
i
n
h
c
e
T
2
1
s
r
e
t
a
e
H
r
e
t
a
W
e
t
a
t
S
7
0
0
2
©
e
e
s
s
e
n
n
e
T
,
y
ti
C
d
n
a
l
h
s
A
All SBN and SBD water heaters are classified by ANSI as Category I (non-condensing,
negative pressure venting) appliances. They are approved for type B vent. The draft inducer
does not pressurize the exhaust.
VENTING
VENTING – MULTIPLE CATEGORY I GAS WATER HEATERS