8
C
omp
on
en
ts
to
ch
ec
k
S
ec
tio
n
of
the
m
anual
!
(n
ot
e
ref
.i
n
brac
ket
s)
---
---
---
---
--- (7)
13.1
12.2
12.2
11.4
10
9.2
8.4
7
6.5
---
5
--- (4)
14.1
--- (3)
--- (2)
--- (1)
Appl
ianc
elock
- --ou
t(*
)
Roomth
emos
tat
del
ayed
Exte
rna
lte
mp.p
rob
e
Pres
sur
egauge
ext
ernal
Safe
tyv
alv
ee
xte
rna
l
Expans
ion
ves
sel
ext
ernal
Flue
temp
.p
rob
eN
TC
Gas
res
trictor
Safe
tyth
ermosta
t
Dete
ctione
lectr
ode
Ign
ition
elec
trod
e
Fan
/a
irr
estr
ictor
C.h
.ret
urn
tem
p.p
robe
C.h.
flo
wte
mp.
pro
be
Gas
val
ve
Con
trol
pan
elel
ectr.
p.c
.b.
Boil
erse
ttings
Mai
nel
ectron
ic
p.c
.b.
Fus
es
(E
lec
tro
nic
p.c.
b.)
Exte
rnal
pum
p
Conde
nsi
nghe
ate
xch
anger
C.h.
circ
uit
Cond.
dra
in
pipe
and
tra
p
Flue
pipe
s
Gas
suppl
yli
ne
Pow
ers
upply
lin
e
De
fe
ct
#
on
on
dis
pla
y
Th
e
boil
er
does
not
st
ar
t.
Th
e
con
trol
pa
ne
ld
is
pl
ay
O
FF
Fa
n
st
ill.
J
J
J
J
indi
catio
n
In
co
rrec
tm
od
ul
at
io
n
J
J
J
J
No”
Er”
i
N
oisy
bolie
r
J
J
J
J
J
J
J
---
W
ate
rl
ea
ks
from
th
e
sa
fe
ty
va
lv
e
du
rin
g
op
er
at
io
no
nc
/h
J
J
J
J
J
---
W
at
er
leaks
from
th
e
saf
et
y
val
ve
wh
en
th
e
bo
ile
ris
of
f.
J
J
J
*
Lock
ou
tis
in
di
ca
te
d
as
“
Er
”o
nt
he
di
sp
la
y.
No
te
U
se
fu
lin
fo
rm
at
io
n
ca
n
be
ob
ta
in
ed
al
so
fr
om
the
op
tic
al
in
dic
at
io
n
give
n
by
the
ap
pl
ia
nc
e
dis
pl
ay
(s
ee
se
ct
io
n
4.
1).
1
C
he
ck
fo
r230V~
between
lin
e
(L
)a
nd
ne
ut
ra
l(
N
)
Ve
rif
y
th
e
in
te
gr
ity
of
su
pp
ly
ca
bl
e,
pl
ug
an
d
ex
te
rn
al
fu
se
s.
C
he
ck
the
po
la
rit
y
of
line
and
ne
ut
ral
co
nne
ct
io
n
2
C
hec
k
th
e
gas
su
pp
ly
pi
pe
and
is
ol
at
io
n
tap
fo
rg
as
tig
ht
nes
s.
3
C
he
ck
fo
rs
oundne
ss
and
abs
en
ce
of
ob
st
ru
ct
io
ns
.V
er
ify
that
th
e
flu
e
te
rmin
al
is
co
rr
ect
ly
in
st
alle
d
(se
e
cle
ar
an
ce
s)
an
d
en
-
su
re
th
at
ex
haus
tg
as
is
no
ts
uc
ke
d
bac
k
by
the
bo
ile
r.
4
C
he
ck
fo
rs
oundne
ss
of
th
e
ci
rc
ui
tand
ve
rif
y
its
co
rr
ec
tfi
lli
ng
(s
ee
al
so
in
st
alla
tio
n
ma
nu
al)
.
5
A
ja
m
m
ed
by
---
pa
ss
co
ul
d
ca
us
e
th
e
ov
er
---
he
at
in
g
of
th
e
m
ai
n
ci
rc
ui
ta
nd
th
e
int
er
ve
nt
io
n
of
the
sa
fe
ty
th
er
m
os
tat
.
6
U
si
ng
th
e
flu
e
anal
yze
r,
ch
ec
k
the
C
O
2
val
ue
of
the
flue
gas
es
.
Thi
s
re
adi
ng
is
a
re
fe
re
nc
e
val
ue
fo
rt
he
gas
val
ve
se
tti
ng.
7
C
he
ck
th
e
pr
essu
riz
atio
n
of
th
e
ex
pa
nsio
n
ve
sse
l.
R
ef
er
to
th
e
in
st
al
la
tion
ma
nu
al
for
pr
op
er
va
lu
es
.
8
Th
e
bo
iler
do
es
n’
tr
eac
h
th
e
nom
in
al
he
at
in
pu
t.
