4
STEP
3
After
Insta
ll
ing
Opening
A
ll
the
Va
l
ves
Operating
the
B
oi
l
er
Measuring
the
In
l
et
Gas
Pressure
Insta
ll
ing
the
Front
C
over
Ensure
Maximum
Water
F
l
ow
A
ft
e
r
running
th
e
b
o
i
le
r
f
o
r
th
e
first
10
minut
e
s,
turn
it
o
ff
an
d
c
le
an
th
e
c
old
wat
e
r
fi
l
t
e
r
an
d
th
e
spac
e
h
e
ating
r
e
turn
strain
e
r
t
o
r
e
m
o
v
e
any
trapp
ed de
bris.
Fina
l C
heck
A
tria
l
run
sh
o
u
ld
b
e
p
e
rf
o
rm
ed
in
acc
o
r
d
anc
e
with
th
e
Insta
ll
ati
o
n
ch
e
ck
l
ist
l
ist
ed
in
th
e
b
o
i
le
r
’
s
Insta
ll
ati
o
n
&
Op
e
rati
o
n
M
anua
l
.
Shut
o
ff
th
e
manua
l
gas
va
l
v
e
.
Op
e
n
C
lo
s
ed
Re
m
o
v
e
th
e
fr
o
nt
c
o
v
e
r
by
loo
s
e
ning
th
e 4
scr
e
ws.
Loo
s
e
n
th
e
scr
e
w
in
d
icat
ed
in
th
e
figur
e
an
d
c
o
nn
e
ct
a
man
o
m
e
t
e
r
t
o
th
e
pr
e
ssur
e
p
o
rt.
Re
s
e
t
th
e
man
o
m
e
t
e
r
t
o ze
r
o
b
e
f
o
r
e
us
e
.
Op
e
n
Ch
e
ck
th
e
in
le
t
gas
pr
e
ssur
e
r
e
a
d
ing
o
n
th
e
man
o
m
e
t
e
r.
Re-o
p
e
n
th
e
manua
l
gas
va
l
v
e
an
d
ch
e
ck
f
o
r
le
aks.
Op
e
n
mu
l
tip
le
fi
x
tur
e
s
that
hav
e
high
f
lo
w
rat
e
s,
such
as
bathtub
an
d
sh
o
w
e
r
fauc
e
ts,
t
o
ramp
th
e
b
o
i
le
r
up
t
o
its
ma
x
imum
firing
rat
e
.
Adj
ust
th
e
in
le
t
gas
pr
e
ssur
e
with
gas
r
e
gu
l
at
o
r.
Gas
supp
l
y
If
not,
N
G
:
3.
5
ĝ
~
1
0
.
5
ĝ
W
C
LP
: 8
.
0
ĝ
~
13.
5
ĝ
W
C
Recommended
Gas
Pressure
Settings
:
Op
e
n
a
h
o
t
wat
e
r
fauc
e
t.
T
h
e
b
o
i
le
r
sh
o
u
ld
turn
o
n
an
d
th
e
gas
in
th
e
gas
supp
l
y
l
in
e
wi
ll
b
e
purg
ed
.
Le
av
e
th
e
fauc
e
t
o
n
unti
l
th
e
b
o
i
le
r
shuts
do
wn
d
u
e
t
o
a
l
ack
o
f
gas
supp
l
y,
an
d
th
e
n
turn
o
ff
th
e
h
o
t
wat
e
r
fauc
e
t.
Gas
supp
l
y
C
AUTIO
N
T
h
e
b
o
i
le
r
cann
o
t
functi
o
n
pr
o
p
e
r
l
y
with
o
ut
suffici
e
nt
in
le
t
gas
pr
e
ssur
e
.
Measuring
the
in
l
et
gas
pressure
shou
l
d
be
performed
by
a
l
icensed
professiona
l
on
l
y.
Power
O
N
Adjust
Temperatures
View
B
asic
Information
Resetting
the
B
oi
l
er
W
h
e
n
th
e
p
o
w
e
r
is
o
n,
th
e
wat
e
r
t
e
mp
e
ratur
e o
f
th
e
spac
e
h
e
ating
supp
l
y
wi
ll
app
e
ar
with
th
e
wat
e
r
pr
e
ssur
e o
n
th
e
fr
o
nt
pan
el
d
isp
l
ay
in
5
s
e
c
o
n
d
int
e
rva
l
s.
1
. Pr
e
ss
th
e Mode
butt
o
n
thr
ee
tim
e
s.
“IN
F
O”
wi
ll
app
e
ar
o
n
th
e d
isp
l
ay.
2
. Pr
e
ss
th
e + o
r
–
butt
o
ns
t
o
switch
b
e
tw
ee
n
th
e
inf
o
rmati
o
n
typ
e
s.
If
an
e
rr
o
r
m
e
ssag
e
app
e
ars,
y
o
u
can
try
r
e
s
e
tting
th
e
b
o
i
le
r
t
o
r
e
s
ol
v
e
th
e
pr
o
b
le
m.
N
ote
Spac
e He
ating
Te
mp
e
ratur
e
DHW Te
mp
e
ratur
e
1
.
M
ak
e
sur
e
that
a
ll
h
o
t
wat
e
r
fauc
e
ts
ar
e
c
lo
s
ed
,
an
d e
nsur
e
that
th
e
int
e
rna
l
circu
l
at
o
r
an
d
any
ex
t
e
rna
l
circu
l
ating
pumps
ar
e o
ff.
2
. Pr
e
ss
th
e Mode
butt
o
n
twic
e
.
T
h
e DHW
m
ode
ic
o
n
turns
o
n.
3
. Pr
e
ss
+ (U
p
) o
r
– (Do
wn
)
butt
o
ns
unti
l
th
e de
sir
ed
t
e
mp
e
ratur
e
app
e
ars
o
n
th
e d
isp
l
ay.
N
ote
1
. Pr
e
ss
th
e Mode
butt
o
n
o
nc
e
.
T
h
e
spac
e
h
e
ating
ic
o
n
turns
o
n.
2
. Pr
e
ss
th
e + (U
p
) o
r
– (Do
wn
)
butt
o
ns
unti
l
th
e de
sir
ed
t
e
mp
e
ratur
e
app
e
ars
o
n
th
e d
isp
l
ay.
DHW
t
e
mp
e
ratur
e
high
e
r
than
125
F
can
caus
e
sca
ld
ing.
If
r
e
s
e
tting
doe
s
n
o
t
s
ol
v
e
th
e
pr
o
b
le
m,
r
e
f
e
r
t
o
th
e
tr
o
ub
le
sh
oo
ting
s
e
cti
o
n
o
f
th
e U
s
e
r
’
s
Inf
o
rmati
o
n
M
anua
l o
r
c
o
ntact
th
e
s
e
rvic
e
c
e
nt
e
r.
Closed
Shut-off-valves
Navien, Inc.
20 Goodyear, Irvine, CA 92618
Tel: 1-800-519-8794, Fax: (949) 420-0430
www.navien.com
Gas
Va
l
ve
Op
e
n
Space
Heating
System
Va
l
ves
DHW
System
Va
l
ves
Shut
-o
ff
va
l
v
e
s
