Install Instructions
CG
i
GAS-FIRED
wATER
BOILER-
sERIEs
3-
Boil
er
Ma
nu
al
7b Start-up -
operate
boiler (continued)
Start
the
boiler
Follow the Operating instructions from Section
9c
to sta
rt
the boiler.
See
Section
7c
if boiler fails to start.
Check
system
and
boiler
t. Check
system
piping for leaks. If found, sh
ut
down
bo
il
er
and
repa
ir
immediatel
y.
2. Vent air from
system
usin~
manual vents.
Ai
r in
the
sys
tem
will
int
e
rf
ere with circulat
iOn
and
cause h
eat
distribution
problems
and
noise.
3. In
spect
vent
system
thoroughly for signs
of
deterioration
from co
rr
osion, physical damage
or
saggin
g.
In
ad
dition -
Check for gas-tight seal
at
every co
nn
ection
and
seam.
Venting
system
mu
st
be
sealed
gas-tight
to
pr
eve
nt
flue gas
sp
illa
ge
and
carbon monoxide emissi
ons
which
will result in severe personal in
jury
or
death.
4. Check aro
und
the
boiler for gas
odo
r
fo
ll
owi
ng the procedure
of
Section
7a
of
this manua
l.
5. Verify operation
per
Section
7b
. Perfo
rm
check-o
ut
pro
-
cedure in Section 8,
and
fill
in
the
Installation
and
se
rvtce
certificate on
the
same page.
Check
burner
flames
View pilot
and
main flames thro
ugh
the inspection
port
in
the
base
burner
shield.
Pilot
burner
flame
(Figure 28)
PROPER
pilot
flame characteristics
t.
Blue tlante.
2.
Inn
er
cone engulfing pilot flame sensor.
3. Pilot flame sensor glowing cherry red.
IMPROPER
pilot
flame charactf!f"istics
I.
Overtired - Large flame lifting
or
blowing past pilot
tlante sensor.
2.
Undertired - Small flame.
hm
er
cone
not
engttlfing
pilot flame sensor.
3.
La
ck
of
primary air -
Ye
llow flame tip.
4. Inco
rr
ectly heated pilot flame sensor.
Main
burner
flame
(Figure 29)
PROPER main
burner
flame characteristics
I.
Ye
llow-orange streaks may appear (cau
se
d by
dust
).
IMPROPER main
burner
flame characteristics
I.
Overtired - Lar
ge
flames.
2.
Undertired - Small tlan1es.
3. Lack
of
prinlary air-
Yellow
tipping on flames
(sooting will occur).
Figure 28
Typical
pilot burner flame
Figure 29
Typical
main burner flame
Tronsporont
b
tuef
l
ome
I
nne
r ftome
7c
Start-up -
if
boiler
doesn't
start
• • •
Check
for:
I.
Loose conn
ec
tions, blown fuse
or
ser-
vice switch o
ff?
2. High linlit switch set below boiler water
temperatur
e?
4. Gas
not
turn
ed
on at meter or boiler?
5.
Incoming gas pressure less than:
5"
w.c.
for natural gas? t 1"
w.c.
for propane
gas?
71030
3.
Th
ermostat
se
t
be
low room tempera-
ture?
6.
If
none
of
the above corrects the problem, refer to Troubleshoot-
Ing, section
11
of
this manual.
Part
Nu
mber 550-142-780/0712 35