VR
8104
, VR
820
4 AN
D VR
8304
I
N
T
E
R
M
IT
TEN
T PI
LO
T CO
M
B
IN
A
T
IO
N
G
A
S CO
N
T
R
O
L
S
69
-122
5—4
1
0
4.
Wi
th
m
a
in
bu
rn
e
r op
er
a
ti
ng,
c
heck t
h
e gas cont
ro
l
fl
ow
r
a
te
usi
ng t
he m
e
te
r
c
locki
ng m
e
thod
o
r che
ck
pr
essur
e usi
ng a m
a
nom
et
er
co
nnect
ed
t
o
t
h
e
out
le
t pr
essur
e t
ap on t
h
e
g
a
s cont
ro
l.
S
ee Fi
g.
6.
5.
If
neces
sar
y,
adj
ust
t
he hi
gh pr
essur
e r
egul
at
or
t
o
m
a
tc
h
the ap
pl
iance r
a
ti
ng
. Se
e
T
a
bl
e
s
8
A
and 8B
fo
r f
a
ct
or
y
-se
t nom
inal
ou
tl
et
pr
essu
re
an
d
adj
ust
m
e
nt
r
ang
e.
a.
R
e
m
o
ve
t
h
e
pr
e
ssur
e r
egul
at
or
adj
u
s
tm
en
t cap
(F
ig
. 6
).
b.
U
s
ing a scr
e
w
dr
iv
er
, t
u
rn
t
he i
n
ner
a
d
ju
st
m
e
n
t
scr
e
w
f
o
r H
I pr
essur
e cl
o
ckw
is
e
t
o
in
cr
eas
e
o
r cou
nt
e
rcl
ockw
is
e
t
o
decr
ease
t
he gas pr
essu
re
t
o
t
h
e
b
u
rner
.
6
.
Af
te
r hi
gh pr
essur
e has
be
en checke
d,
che
ck
lo
w
pr
essur
e r
egul
at
io
n
. T
w
o-
st
ag
e appl
ia
n
c
e
oper
at
ing seque
nces var
y.
C
onsul
t t
he app
lia
nce
m
anuf
act
ur
er
s i
n
st
ru
ct
ions
fo
r t
he
spe
ci
fi
c
oper
at
ing seque
nce and r
egu
la
to
r
a
d
ju
st
m
e
n
t
pr
oced
ur
e
f
o
r t
h
e
ap
pl
iance
i
n
w
h
ic
h
th
e c
ont
ro
l
is
in
s
tal
le
d and
f
o
r
in
st
ru
ct
io
n
s
on
how
t
o
pr
even
t t
he
cont
ro
l f
ro
m
m
o
vi
ng t
o
hi
gh st
age w
h
ile
c
hecki
ng
th
e
lo
w p
re
s
s
u
re
re
g
u
la
to
r
s
e
tt
in
g
.
7.
C
h
e
c
k
t
h
e l
o
w
r
a
te
m
a
n
if
o
ld
pr
es
s
u
re
l
is
ted
on
t
h
e
appl
ia
nce nam
ep
la
te
.
G
a
s con
tr
ol
l
o
w
r
a
te
o
u
tl
et
pr
essur
e shou
ld
m
a
tc
h t
h
is
r
a
ti
ng.
8.
Wi
th
m
a
in
bu
rn
e
r op
er
a
ti
ng,
c
heck t
h
e gas cont
ro
l
fl
ow
r
a
te
as bef
or
e
(u
s
ing t
he m
e
te
r cl
ocki
n
g
m
e
th
od or
ch
eck pr
essur
e usi
ng a m
a
nom
et
er
conn
ect
ed t
o
t
he out
le
t pr
essur
e t
ap on t
h
e
cont
ro
l)
.
9.
If
neces
sar
y,
adj
ust
t
he l
o
w
pr
essur
e r
egul
at
or
t
o
m
a
tc
h
the ap
pl
iance r
a
ti
ng
. Se
e
T
a
bl
e
s
8
A
and 8B
fo
r f
a
ct
or
y
-se
t nom
inal
ou
tl
et
pr
essu
re
an
d
adj
ust
m
e
nt
r
ang
e.
a.
R
e
m
o
ve
t
h
e
pr
e
ssur
e r
egul
at
or
adj
u
s
tm
en
t cap
(F
ig
. 6
).
U
s
ing a scr
ew
d
ri
v
er
, t
u
rn
t
h
e
i
nner
adj
ust
m
e
nt
scr
ew
f
o
r
LO
p
res
sur
e c
lockw
is
e
t
o
i
n
cr
ease
o
r
coun
te
rc
lo
ckw
is
e
t
o
decr
ea
se t
h
e
g
a
s pr
essur
e t
o
th
e b
u
rner
.
10
.
O
n
ce hi
g
h
a
nd l
o
w
pr
essur
e have
be
en checke
d
and ad
ju
st
ed,
r
e
pl
a
c
e
p
re
ssur
e r
e
gul
at
o
r
a
d
ju
s
tm
en
t c
a
p.
I
f
th
e
de
s
ir
e
d ou
tl
e
t pr
e
s
s
u
re
or
fl
ow
r
a
te
can
not
b
e
a
c
hi
e
v
ed by adj
ust
in
g
t
he gas
con
tr
ol
, che
ck
the con
tr
ol
i
n
le
t pr
essur
e usi
ng a
m
ano
m
e
te
r at
t
he i
n
le
t pr
essur
e t
a
p
o
f t
he cont
ro
l.
If
t
he i
n
le
t
p
re
ssur
e
is
i
n
t
he nom
in
al
r
ange
(s
ee T
a
b
les 8A
a
nd 8B)
,
repl
ace t
he gas cont
ro
l.
O
th
e
rw
is
e,
t
a
ke
the
neces
sar
y st
eps
t
o
pr
ovi
d
e
pr
op
er
ga
s
p
res
sur
e
to
t
h
e cont
ro
l.
Chec
k Safety
Shutdo
wn Perfo
rmance
W
ARNIN
G
Fi
re
o
r
E
x
pl
osi
on
H
a
zar
d.
C
a
n
c
a
use
p
ro
p
er
ty
dam
ag
e,
se
ver
e
in
ju
ry
or
d
eat
h.
Per
fo
rm
t
he
saf
et
y sh
ut
d
o
w
n
t
e
st
a
n
y
ti
m
e
w
o
rk
is
d
o
n
e
on
a ga
s
sy
s
tem
.
N
O
T
E
:
R
ead st
eps 1 t
h
ro
ugh 7 bef
or
e st
a
rt
in
g
, and
c
o
m
p
a
re
t
o
th
e
s
a
fe
ty
s
h
u
td
o
wn
o
r s
a
fe
ty
lo
ckout
t
e
st
s r
e
com
m
end
ed f
o
r t
h
e
in
te
rm
it
ten
t
pi
lo
t (
IP
) i
g
ni
ti
o
n
m
o
dul
e
. Wher
e di
ff
er
ent
,
use
the pr
oced
ur
e
re
co
m
m
en
ded f
o
r
the m
odul
e.
1.
T
u
rn
of
f ga
s s
uppl
y.
2.
S
e
t t
her
m
o
st
at
or
cont
ro
ller
ab
ove r
oom
te
m
per
at
ur
e t
o
cal
l f
o
r he
at
.
3.
W
a
tc
h f
o
r i
gni
ti
on spar
k or
f
o
r
g
low
a
t hot
sur
fa
c
e
igni
te
r ei
th
e
r i
m
m
edi
at
el
y or
f
o
llo
w
ing pr
epur
ge
.
S
ee
IP
m
o
d
u
le
sp
eci
fi
ca
ti
ons.
4.
T
im
e
t
h
e
l
engt
h of
t
he spa
rk
ope
ra
ti
on.
S
ee t
he I
P
m
odu
le
spe
ci
fi
cat
ions.
5.
A
ft
e
r
the m
odu
le
l
o
cks
o
u
t,
ope
n
the m
anu
al
gas
coc
k an
d m
a
ke
sur
e
no
gas
is
f
low
in
g
t
o
t
h
e
pi
lo
t
or
m
a
in
b
u
rner
. Wi
th
m
odul
es t
h
at
con
ti
nue
t
o
spar
k
un
ti
l t
h
e
p
ilo
t
ligh
ts
or
t
he syst
em
shut
s dow
n
m
anu
al
ly
, t
he pi
lo
t
sh
oul
d
lig
h
t w
hen t
he m
a
nual
ga
s
co
nt
ro
l knob i
s
op
ened.
6
.
S
e
t t
he t
h
er
m
o
st
a
t bel
ow
r
oom
t
e
m
p
er
at
u
re
an
d
w
a
it
one m
inu
te
.
7.
O
per
at
e
syst
em
t
h
rough
o
ne
com
pl
e
te
cycl
e
to
m
a
ke sur
e al
l cont
ro
ls
op
er
a
te
pr
op
er
ly
.
T
a
bl
e 8A.
Pr
es
sur
e Re
gul
at
or
Spe
ci
fi
cat
ion Pr
es
sur
es (
in
. w
c
).
a
L
o
w
Fi
re
se
tt
in
g
ra
n
ge f
o
r VR
830
4Q
1/
2 i
n
. by 1/
2
in
.
a
nd 1/
2
in
.
b
y
3
.4 i
n
. i
s
1.
5 t
o
3.
0 i
n
. w
c
.
M
ode
l T
y
pe
T
y
pe
of
Ga
s
N
o
mi
n
a
l In
le
t
P
ressu
re
R
a
n
g
e
Fac
to
ry
S
e
t N
o
m
inal
O
u
tl
et
P
ressu
re
Se
tt
ing Ra
nge
St
e
p
Fu
ll
R
a
te
St
e
p
F
u
ll
Ra
te
S
ta
ndar
d,
Sl
o
w
N
A
T
5
.0
t
o
7.
0
—
3.
5
—
3.
0 t
o
5
.0
L
P
1
2
.0
to
1
4
.0
—
1
0
.0
—
8
.0
t
o
1
2
.0
St
e
p
NA
T
5
.0
to
7
.0
0
.9
3
.5
N
o
n
e
0
.7
t
o
1
.7
L
P
1
2
.0
t
o
14.
0
2
.2
10
.0
N
o
ne
1.
4 t
o
5
.5
T
w
o-
St
ag
e
N
A
T
5
.0
t
o
7.
0
—
1.
7 Low
3.
5 H
igh
—
0.
9 t
o
3
.0 Low
a
3.
0 t
o
5
.0 H
igh
L
P
1
21.
0 t
o
14
.0
—
4
.9
Low
10
.0
H
igh
—
3
.5
t
o
5
.5 Low
8.
0 t
o
1
1
.0
H
igh
VR
8104
, VR
820
4
A
N
D VR
8304
I
N
T
E
R
M
IT
TEN
T PI
LO
T CO
M
B
IN
A
T
IO
N
G
A
S CO
N
T
R
O
L
S
9
69-1
225—4
Ch
eck and
Adjust
Gas Inpu
t
an
d Burne
r Ignitio
n
IM
P
O
RT
A
N
T
1.
D
o
no
t exce
ed i
n
p
u
t r
a
ti
ng
st
am
ped
on
appl
ia
nce nam
ep
la
te
,
o
r m
anuf
act
ur
er
’s
re
com
m
ende
d b
u
rner
o
ri
fi
c
e
pr
essur
e
fo
r si
ze
or
if
ic
e
(s)
used
. M
a
ke cer
ta
in
pr
im
ar
y ai
r supp
ly
to
m
a
in
bur
ner
is
pr
oper
ly
ad
ju
st
ed f
o
r
com
pl
et
e
com
bust
ion.
F
o
llow
ap
pl
iance
m
anu
fa
ct
ur
er
in
s
tr
u
c
tio
n
s
.
2
.
IF
C
H
E
C
K
ING
G
A
S
IN
PU
T
BY
C
L
O
C
K
ING
G
A
S M
E
T
E
R
: M
a
ke cer
ta
in
t
h
e
re
i
s
no
ga
s
fl
o
w
th
ro
ugh t
he m
e
te
r ot
her
t
h
a
n
t
o
t
h
e appl
ia
n
c
e
bei
ng
check
ed.
O
ther
a
ppl
ianc
es m
u
st
r
e
m
a
in
of
f w
it
h
t
he pi
lo
ts
ext
in
g
u
is
h
ed (
o
r de
duct
t
hei
r
consu
m
p
ti
on f
rom
t
h
e m
e
te
r r
e
adi
ng)
. C
onver
t
fl
ow
r
a
te
t
o
B
tuh
a
s
de
scr
ib
e
d
i
n
f
o
rm
70-
260
2,
G
a
s C
ont
ro
ls
H
andb
ook,
a
nd
com
par
e
to
B
tu
h
in
p
u
t r
a
ti
ng
o
n
a
ppl
ianc
e n
a
m
epl
at
e
.
3
.
IF
C
H
E
C
K
ING
G
A
S
IN
PU
T
W
IT
H
MA
NO
MET
E
R:
Ma
k
e
s
u
re
th
e
g
a
s
c
o
n
tro
l
k
n
o
b
is
i
n
t
he O
FF posi
ti
on
be
fo
re
r
e
m
o
vi
ng out
le
t
pr
essur
e t
ap pl
u
g
t
o
conn
ect
m
ano
m
e
te
r
(p
re
ssur
e gaug
e)
. Al
so m
o
ve t
h
e
g
a
s
c
ont
ro
l
knob
t
o
t
h
e O
F
F
p
o
si
ti
o
n
w
h
e
n
r
e
m
o
vi
ng
the
gaug
e and r
epl
aci
n
g
t
he pl
ug.
Bef
or
e r
e
m
o
vi
ng
in
le
t
p
re
ssur
e t
a
p
pl
ug,
shut
o
ff
gas suppl
y at
th
e m
a
nual
va
lv
e
in
t
he
ga
s pi
pi
ng
to
t
he
appl
ia
nce or
, f
o
r LP
, at
t
he t
ank.
A
lso
sh
ut
of
f
gas sup
pl
y bef
or
e di
s
c
onne
ct
ing m
anom
et
er
and r
epl
aci
ng pl
u
g
. R
epea
t G
a
s
L
eak T
e
st
at
pl
u
g
w
it
h
m
a
in
b
u
rner
o
per
at
in
g
.
N
O
TE
:
C
h
e
ck t
h
e
i
n
le
t pr
essu
re
be
fo
re
adj
ust
in
g
the
pr
essur
e r
egul
at
or
.
S
ta
nda
rd
a
nd S
lo
w
-O
pe
ni
n
g
(H
, K
a
nd M
) Mo
de
ls
1.
C
a
re
fu
lly
check
th
e m
a
in
bu
rn
er
li
ght
of
f.
M
a
ke
sur
e
th
at
t
he m
a
in
bu
rn
er
l
igh
ts
sm
oot
hl
y
an
d t
h
a
t al
l
p
o
rts
re
ma
in
l
it
.
2.
C
h
eck t
h
e
f
u
ll r
a
te
m
ani
fo
ld
pr
essu
re
l
ist
ed on t
he
appl
ia
nce nam
ep
la
te
.
G
a
s con
tr
ol
f
u
ll r
a
te
out
le
t
pr
essur
e shou
ld
m
a
tc
h t
h
is
r
a
ti
ng.
3.
Wi
th
m
a
in
bur
ne
r
ope
ra
ti
ng,
che
ck t
h
e
con
tr
ol
f
lo
w
ra
te
us
ing t
he m
e
te
r cl
ocki
n
g
m
e
th
o
d
o
r che
ck
pr
essur
e usi
ng a m
a
nom
et
er
co
nnect
ed
t
o
t
h
e
out
le
t pr
essur
e t
ap on t
h
e
c
ont
ro
l.
S
ee Fi
g.
6.
4.
If
neces
sar
y,
adj
ust
t
he pr
essur
e r
egul
at
or
t
o
m
a
tc
h
the ap
pl
iance r
a
ti
ng
. Se
e
T
a
bl
e
s
8
A
and 8B
fo
r f
a
ct
or
y
-se
t nom
inal
ou
tl
et
pr
essu
re
an
d
adj
ust
m
e
nt
r
ang
e.
a.
R
e
m
o
ve
t
h
e
pr
e
ssur
e r
egul
at
or
adj
u
s
tm
en
t cap
scr
e
w
.
b.
U
s
ing a scr
e
w
dr
iv
er
, t
u
rn
t
he i
n
ner
a
d
ju
st
m
e
n
t
scr
e
w
(
F
ig
. 6)
cl
ockw
is
e
t
o
i
n
cr
ease or
count
er
cl
o
ckw
is
e
t
o
decr
eas
e t
he
ga
s
pr
e
ssur
e t
o
t
he bur
ner
.
c.
Al
w
a
ys r
epl
ace t
h
e cap scr
ew
an
d
ti
g
h
ten
fi
rm
ly
t
o
pr
event
gas l
e
akage
.
5.
I
f
the desi
red out
le
t pr
essur
e or
f
low
r
a
te
ca
nnot
be ach
ieve
d by adj
ust
ing t
he ga
s
co
nt
ro
l,
ch
eck t
h
e
gas con
tr
ol
i
n
le
t pr
essur
e usi
ng a m
a
nom
et
er
a
t
th
e i
n
le
t pr
essu
re
t
ap
of
t
h
e
ga
s co
nt
ro
l.
I
f
the
in
le
t
pr
essur
e i
s
i
n
t
he no
m
inal
r
a
n
ge (
s
e
e
T
abl
es
8
A
and
8B
),
r
e
pl
a
c
e
th
e
ga
s c
ont
ro
l.
O
ther
w
ise,
t
a
ke
th
e n
e
cessa
ry
st
eps
to
p
ro
v
id
e
pr
op
er
ga
s
pr
essur
e t
o
t
he con
tr
ol
.
N
O
T
E
:
If
t
he bur
ner
f
ir
ing r
a
te
i
s
above
15
0,
000 Bt
uh
on
V
R
83
04
m
odel
s (
s
e
e
T
a
bl
e
1
fo
r V
R
8
304
cap
aci
ti
es)
, i
t m
a
y not
be po
ssi
b
le t
o
del
iv
e
r t
he
de
si
red out
le
t pr
essu
re
. Thi
s
is
an appl
ic
a
ti
on
issue,
no
t
a co
nt
ro
l f
a
ilur
e.
T
a
k
e
w
hat
ever
st
ep
s
ar
e r
equi
red t
o
cor
re
ct
t
he si
tu
a
ti
on.
S
te
p
-Op
e
n
in
g
(P
) M
ode
ls
S
tep
-o
peni
ng m
odel
s r
e
q
u
ir
e t
hat
yo
u
c
heck and
ad
ju
st
the f
u
ll-
rat
e pr
essur
e f
ir
s
t and
t
hen
ch
eck t
h
e
st
ep
pr
essu
re
. The
st
ep pr
essu
re
i
s
n
o
t f
iel
d adj
ust
abl
e.
1.
C
a
re
fu
lly che
ck t
he
m
a
in
bur
ner
l
igh
to
ff
.
M
a
ke su
re
that
t
h
e
m
a
in
bur
ner
l
ig
h
ts
sm
oo
th
ly
and
that
al
l
p
o
rt
s
re
ma
in
li
t.
2.
C
heck t
he f
u
ll r
a
te
m
a
n
if
o
ld
p
re
ssur
e l
is
te
d
on
t
he
ap
pl
iance
na
m
e
pl
a
te.
G
a
s
co
nt
ro
l f
u
ll r
a
te
o
u
tl
et
pr
essu
re
sh
oul
d m
a
tc
h
th
is
r
a
ti
ng.
3.
Wi
th
m
a
in
b
u
rner
o
per
at
in
g
, check
t
he gas con
tr
ol
fl
o
w
r
a
te
us
in
g t
h
e
m
e
te
r c
loc
k
in
g
m
e
th
od
o
r
ch
e
c
k
pr
essu
re
u
s
in
g
a m
anom
e
ter
conne
ct
e
d
t
o
t
he
ou
tl
et
pr
ess
ur
e
t
ap on t
he gas con
tr
ol
. See
F
ig.
6.
4.
If
nec
essar
y,
ad
ju
st
t
h
e
pr
es
sur
e
re
g
u
la
to
r t
o
m
a
tc
h t
h
e
a
ppl
ia
n
c
e
ra
ti
n
g
.
S
ee T
abl
es 8A and
8
B
fo
r f
a
ct
or
y-
set
no
m
inal
o
u
tl
et
p
re
ssur
e
and
ad
ju
st
m
ent
r
a
n
ge.
a.
R
e
m
o
ve t
he pr
essur
e r
egu
la
to
r adj
ust
m
ent
cap
scr
ew
.
U
s
in
g
a
scr
ew
dr
iv
e
r,
t
u
rn
t
h
e
inne
r
ad
ju
st
m
ent
sc
re
w
(F
ig
. 6)
cl
oc
kw
is
e
t
o
i
n
cr
eas
e
o
r
cou
nt
er
c
lockw
is
e
t
o
dec
re
ase t
h
e
g
a
s pr
e
ssur
e
to
t
h
e
bu
rn
e
r.
b.
Al
w
a
ys r
e
p
lace
t
he
cap
scr
ew
a
nd
ti
ght
en
fi
rm
ly
t
o
pr
eve
nt
ga
s
leaka
ge.
5.
If
t
he desi
red out
le
t pr
essur
e or
f
low
r
a
te
canno
t be
ach
ieve
d by adj
u
s
ti
ng t
he gas cont
ro
l,
check t
he
ga
s co
nt
ro
l
in
le
t pr
essu
re
u
s
in
g
a
m
ano
m
e
te
r
at
the
in
le
t p
re
ssur
e
ta
p
o
f
th
e c
ont
ro
l.
I
f t
he
in
le
t
pr
essu
re
i
s
i
n
t
h
e
n
o
m
ina
l r
a
nge (
s
ee T
abl
es 8A
an
d
8
B
),
r
epl
ace t
he cont
ro
l.
O
ther
w
ise,
t
a
ke
t
he
ne
cessar
y st
e
p
s
to
pr
ovi
de pr
oper
g
a
s pr
e
ssur
e t
o
the cont
ro
l.
6
.
C
a
re
fu
lly check t
he b
u
rner
li
ght
of
f at
st
ep pr
essur
e.
M
a
ke sur
e t
he bur
ner
l
ight
s
sm
oo
th
ly
and w
it
hout
fl
as
hback t
o
t
h
e
or
if
ic
e.
M
a
ke
sur
e al
l
por
ts
r
e
m
a
in
lit
. C
ycl
e t
he b
u
rner
sever
al
t
im
e
s,
al
lo
w
ing at
l
east
60
se
conds bet
w
een cycl
es f
o
r t
h
e r
e
g
u
la
to
r t
o
re
sum
e
th
e
st
ep f
unct
io
n.
R
e
peat
af
te
r
al
lo
w
ing
t
h
e
bu
rn
er
t
o
cool
. R
e
adj
ust
t
he f
u
ll
ra
te
out
le
t
pr
essu
re
, i
f necess
ar
y,
t
o
i
m
p
ro
v
e l
ig
ht
of
f
cha
ra
ct
e
ri
s
ti
cs.
T
w
o-
Stag
e (Q)
Mo
dels
T
w
o-
st
age m
ode
ls
r
equi
re
t
h
a
t you ch
eck and ad
ju
st
bot
h
hi
gh and
l
o
w
pr
essu
re
r
egu
la
to
r set
ti
ngs.
T
w
o-
st
age
ap
pl
iance
op
er
at
ing
seq
uence
s va
ry
. C
ons
ul
t
th
e
ap
pl
iance
m
anu
fa
ct
ur
er
i
n
s
tr
u
ct
io
n
s
f
o
r
th
e
sp
eci
fi
c
op
er
at
ing sequ
ence and
r
egu
la
to
r
a
d
ju
s
tm
ent
pr
ocedu
re
fo
r t
he
app
liance
in
w
h
ic
h
th
e
co
nt
ro
l i
s
i
n
st
al
le
d
.
1.
S
e
t ap
pl
iance
t
o
oper
at
e on hi
g
h
.
2.
C
a
re
fu
lly che
ck t
he
m
a
in
bur
ner
l
igh
to
ff
.
M
a
ke su
re
that
t
h
e
m
a
in
bur
ner
l
ig
h
ts
sm
oo
th
ly
and
that
al
l
p
o
rt
s
re
ma
in
li
t.
3.
C
heck t
he f
u
ll r
a
te
(
h
igh)
m
a
ni
fo
ld
pr
essur
e l
ist
e
d
on
t
he
ap
pl
iance
n
a
m
epl
at
e
f
o
r
hi
g
h
pr
essur
e.
T
he
ga
s co
nt
ro
l
fu
ll
ra
te
o
u
tl
et
p
re
ssur
e s
houl
d
m
a
tc
h
th
is
ra
ti
n
g
.
