2
9
1
2
0
v
o
l
t
potent
i
a
l
e
x
posure
. I
so
l
ate
the
app
l
i
ance
and
reconf
i
rm
power
i
s
d
i
sconnected
us
i
ng
a
mu
l
t
i
-
meter
.
W
AR
NIN
G
Ser
vi
ce
Proce
du
re
V:
B
l
o
w
er
T
e
sting and
R
e
pla
ce
m
e
nt
B
l
o
w
er
R
e
pla
ce
m
e
nt
Proce
du
re
Step
1
.
Pos
i
t
i
on
ma
i
n
power
sw
i
tch
to
“
O
FF
”
.
Step
2.
D
i
sconnect
(unp
l
ug)
water
heater
from
1
2
0
v
o
l
t
power
source
.
Step
3
.
Turn
off
gas
supp
l
y
to
water
heater
.
Step
4.
U
n
-l
atch
&
remo
v
e
surround
co
v
er
from
top
of
heater
.
Step
5
.
D
i
sconnect
the
2
w
i
re
harnesses
from
b
l
ower
.
Step
6
.
D
i
sconnect
i
nta
k
e
v
ent
and
gas
supp
l
y
from
gas
v
a
l
v
e
assemb
l
y
.
Step
7
.
R
emo
v
e
the
2
to
3
gas
v
a
l
v
e
mount
i
ng
screws
(Tor
x
b
i
t)
l
ocated
on
the
v
entur
i
mount
i
ng
f
l
ange
.
(
R
efer
to
page
2
7
for
more
deta
i
l
s
.
)
Step
8
.
R
emo
v
e
The
4
b
l
ower
f
l
ange
mount
i
ng
screws
(
5/
3
2
A
ll
en
wrench)
and
remo
v
e
b
l
ower
from
trans
i
t
i
on
f
l
ange
.
Step
9
.
R
emo
v
e
any
res
i
dua
l
gas
k
et
mater
i
a
l
from
v
entur
i
mount
i
ng
f
l
ange
and
trans
i
t
i
on
f
l
ange
.
Step
10
. I
nsta
ll
new
b
l
ower
w
i
th
new
gas
k
et
pro
vi
ded
.
Secure
b
l
ower
i
n
p
l
ace
us
i
ng
screws
from
step
8
.
Step
11
.
R
econnect
gas
v
a
l
v
e
assemb
l
y
to
b
l
ower
w
i
th
new
gas
k
et
pro
vi
ded
.
Secure
gas
v
a
l
v
e
i
n
p
l
ace
us
i
ng
screws
from
step
7
.
Step
1
2.
R
econnect
i
nta
k
e
v
ent
and
gas
l
i
ne
to
gas
v
a
l
v
e
assemb
l
y
and
chec
k
for
gas
l
ea
k
s
repa
i
r
any
l
ea
k
s
found
.
Step
13
.
R
econnect
the
2
w
i
re
harnesses
to
b
l
ower
assemb
l
y
,
restore
1
2
0
v
o
l
t
power
supp
l
y
&
gas
supp
l
y
to
water
heater
and
conf
i
rm
proper
operat
i
on
fo
ll
ow
i
ng
the
l
i
ght
i
ng
i
nstruct
i
ons
on
the
l
i
ght
i
ng
i
nstruct
i
on
l
abe
l
or
the
l
i
ght
i
ng
i
nstruct
i
ons
l
ocated
i
n
the
i
nsta
ll
at
i
on
and
operat
i
ng
i
nstruct
i
on
manua
l.
Step
1
4.
R
ep
l
ace
surround
co
v
er
on
top
of
water
heater
.
29
