Install Instructions
CG
i
GAS-FIRED
wATER
BOILER-
sERIEs
a-
Boiler
Manual
9a
Operation - sequence (continued)
- The circu1ator continues to operate.
8.
Lower room thermostat setting
to
stop call for he
at
Themtostat is satisfied - Pilot
and
main
gas
valves are
d osed
- Inducer operates
fo
r
IS
-seco
nd
pos
tpur
ge- C
ir
culator
is
s
hut
off.
9. Boiler is now
in
the off cycle.
10
. Repeat steps 1 through 6 several times to veri
fy
op
er
ation.
II. Return the the
rm
ost
at
to n
orm
al se
tt
in
g.
12
. Set thermostat he
at
anticipator setting as instructed in Figure
32
, page 40.
Fi
g
ur
e 30
Co
ntrol
modul
e
seq
ue
nc
e of opera
tion
- s
tatu
s
light
indica
ti
ons
Steps
Ca
n f
or
POWER
TSTAT LIMIT
PURGE
FLAME TIMING
{I:IIIOWing
&1£1:17,
cycle
goes
Dadt
~
$:ep
1.)
h
eat?
jl
CIRC
1\
jl jl jl
'·
S1andby
•
wamng
w call
tor
neat
NO
6
0 0 0 0
-
2.
Ca
n fat
heat
6 6
0 0 0
-
YES
•
actlal
Ot
on
3.
li
mit
ci
rc
uit
• u
ml!
oo«.rol5
Ci06e(l
YES
jl jl jl
0 0
-
•
Rollot.t
TfE
COf'llac:f.:6
CfOSe(l
••
Inducer
•
Inducer
t
um&
on
YES
li
ji
li
0 0
-
5.
Pressure
ci
rcu
it
•
Pre"'-ft
6'1&:1'1
CCifltaoi5
CI06e<l
YES
ll
I'
I
II
li
0
35sec
•
Prepurge
1t:1r
10
&eOOnCI5
G.
Pi
l
ot
flame proven •
Gao v
a!Ye
open
6 6 6 6 6
1
5sec
YES
•
PilOt
remoifn&
on
•
BCi'IH
ptOOI.I(::h)
heat
7.
Limit cycle
• u
ml!
ct'CIJl open
YES
6 6 6
0 0
-
•
Ga5
v
a!Ye
CI06e0
8.
Aameoutage
• Flameout
NO
6 6 6
0 0
-
• BCi'IH
recyciK
9.
Thermost
at
sat
i
sfied
•
Cfrctla:
«
o=
NO
jl
0
i6
jl
0
1
5sec
10.
Circu
l
ator
exercise
rout
i
ne
• Cfrctla:«
tum5
on
tel' JO
5e001'1C161f
NO
jl
0 0 0 0
3D
sec
a = "ON
'"
0
=
"OFF
"'
See Sec-bon 9a, Hem
4b
for
control
response
to
f
ailure
to
proven
pilot
flame.
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38
Part
Number
550
-
142-780/07
12