Weil-McLain GV90+ Installation And Start-Up Manual page 63

GV90+ Series 2
U.S'*IIr£0
wuu
er1ILER -
Boiler Manual
Start-up
(aonunuedJ
Figure 72 Check tor igniter glow b( looking into
oboorvation
port
on
fr911
of
blowQf
housing
0
Check gas piping
I. C1tec:k around 'the-l>oiitr for gas odctr foU()WiJtg
th~
prucr:dure
of pa_gt
54
( If
t:hii manual
IAWARHINGI lfj'()tl
disca~•t
.viden<eof
any
!lJi• lak,
shutdown
tbe t;,c: d Jtr
Bt
Once. Find
tht'
leak source
with
bubblto
test and repair immediately.
Do not starr
boiler
again unrll corrected. FaiJure
to
comply could
re-
sult in
severe
ptrsonal injury, death or substanrtal
property damage.
0
Checkthe ign~er
I. lnspecr rhe igniter ro verifyope-rarion as shown in Figure 72.
The igniter glow maybe dlfficultto see dearly, depending on
room lighringM
Gas valve adjustment - altitude over
5,500 f - t ONLY
Appt)' the following only when:
Altitude is
ova 5,500 fetor above
St:a
le\rel.
You havt obtained a high altitude kit
(with
tools needed) and
instaJJtd
high
a ltitude air pressure switch ptr
the insrructions
on page 10.
Boiler has srartM correctt)• , following procMures on pre\ri-
ous pages.
You will
n ~
r.he tools shown in Figure 73. Adjust the gas valve
outlet pressure only if required
as
described in the following
instructions.
Connect and adjust manometer
I. Remove boiler jacket top and front panels.
2. Oose manual
gas
supply valve and tum oA' decrricaJ power
ro boiler.
3. Using common bit screwdri\'fr, remO\'f oudet prtssure rap
plug
from gas valve
and save plug (Figure
74).
Part n umber 550-14-2-783/1012
4. Place the
n egati~
side of rhe manometer hose O\'fr end of
QuU et p-ur¢ tap barr¢!.
5. Position
and
UTO
manomtrer
~r
manufacturers instructions.
The manometer must have atleast6• of tubingabo>-e the fluid
le>-el or flllid may be drawn into the gas >'alve.
f,j•i·ii!HJ;I
If
manometer fluid
is
drawn into gas
valve body, gas
"Vakre must
be
replaced. Fluid in
vah~
will cau..st' ir
ro
malfunctio n, possibly resulting in se\rert persona]
iinjury, death or substantial property damage.
6. Disconnect tubt from hose barb on gas valve ~nr tap. Con-
nect rube end to
tee
bose fitting as shown in Figure 74. Then
add length of hose from tee hose fitting to gas valve vent tap.
7. Connect positi\'f side manometer hose ro top of the tee hose
fitting (Figure
74).
8. Connect
n egati~
side manometer hose ro r.he barre-l of the
gas
\'alve
oud~
pressure tap
( Figu~
74).
Check gas valve setpoint
1.
Ope-n manual
gas vaJ~
and turn on decrricaJ power to boiler.
2. Srart boiler and allow boiJer
ro run
for 5 minutes.
3. Read manomtrer. This
is the
gas
vah-eoudet pressure set point.
If
S<t
point
is
between- 0.1" w.c.
and-
0.3" w.c. go to step 7.
4 .
If
gas
valve setpoint is not betwem -O. l" w.c. and -0.3,. w.c.,
useT
-40dTi~r ro
remove cap on
gas vaJ~
pressure regulator.
5. Turn gas valve pressure regulator screw counterdockwi.se r..
to lower gas vahre set point to- 0.2" w.c.
6. ReinsraU capon
gas
\'II]~
pressure regulator using T-40driver.
7. Cycle boilrr off and on several rimes
ro
\'frify gas \>alve set
point. If s~t
point does not remain
between - 0.1"
w.c. and-
0.3" w.c., readjust as nectsSary.
8. Close manual gas supply \'ll]ve and turn oA' electrical power
to boiler.
9. Remo~
manometer hose from
gas
\>alve outler pressure tap
ban-tl and replace sealing screw.
10. Remove
tee
hose fitting and added tube.
11.
Reinstall hose on gas val\re \'fnt rap hose barb.
12. Ope-n man ual
gas
supply val\re and turn on electrical power
to boiler.
Gat Ollllrol oolkl
pttt~ut<
13p -
I0C31od on bid: ddt of
J!l'
CO<Wrol. Ill< 13p
closest 10
p
c::ootml
gas
outkc - Rtmow
screw from gaiOO!IIrol oudtt
prumtt
cap and
slklr
host
om cap
2
Addteebose~u$hcwn
3 E:dsting hok
to
ps
c.ontrol ven113p host bvb- Rtmcwe from
gas
OOiltrol
wnt
cap and
OOiltii!Ct
to
Uld or
Iff
as sllo-·n
<I
Gas
C:OII:trol
pmsurt rtgt.Uor
cap
S
Honeywell '~)'"~
VRSI ISV
gas
YaM
6
Gas ootlet VUlt
C ap
7 Gas ootlet
pipins
3 Add
how
rrom pscOlllrd wonapto tte hose
fi.tting
63