Weil-McLain Standing Pilot Cast Iron Gas Boiler CGA25SPDN User Manual
Part Number 550-101-009/0107
33
GOLD CGa Gas-Fired Water Boiler — Boiler Manual
Installation and service certificate
"OILER
-EASURED
)NSTALLER
)NSTALLERS
Check-out procedure — checklist
7
O
"OILER
O
!UTOMATIC
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!IR
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!IR
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#ORRECTLY
4ABLE
,
page 12 to check size and fuel type.
#ORRECTLY
Failure to do so will cause severe personal in-
jury, death or substantial property damage.
jury, death or substantial property damage.
O
Followed lighting/operating instructions on boiler or in
manual Section
manual Section
or Section
O
0ROPER
#HECK
,
manual Section
D
.
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Test limit control — While burners are operating, move
indicator on limit control below actual boiler water tem-
indicator on limit control below actual boiler water tem-
PERATURE
to operate. Raise setting on limit control above boiler water
temperature and burners should reignite.
temperature and burners should reignite.
O
Test additional field-installed controls — If boiler has a low
water cutoff, additional high limit or other controls, test for
water cutoff, additional high limit or other controls, test for
OPERATION
operating and should go off when controls are tested. When
controls are restored, burners should reignite.
controls are restored, burners should reignite.
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"UTTON
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Test ignition system safety device:
a.
a.
3TANDING
— Turn gas cock knob to
0),/4
posi-
tion and extinguish pilot flame. Pilot gas flow should
stop in less than 3 minutes. Put system back into op-
eration (see Section
stop in less than 3 minutes. Put system back into op-
eration (see Section
).
b.
3PARK
IGNITED
side of gas valve. Start boiler, allowing for normal
start-up cycle to occur and main burners to ignite.
With main burners on, manually shut off gas supply
start-up cycle to occur and main burners to ignite.
With main burners on, manually shut off gas supply
AT
off. Open manual main shutoff gas valve. Manometer
should confirm there is no gas flow. Pilot will relight,
flame sensing element will sense pilot flame and main
burners reignite.
should confirm there is no gas flow. Pilot will relight,
flame sensing element will sense pilot flame and main
burners reignite.
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Set limit control(s) to system temperature requirements.
Adjust balancing valves and controls to provide design
temperature to system.
temperature to system.
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For multiple zones, adjust flow so it is about the same in
each zone.
each zone.
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6ERIFY
ERLY
&IELD
, manual Section
5
, page 27,
4HERMOSTATS
.
O
#YCLE
verify boiler goes through normal start-up cycle. Lower to
lowest setting and verify boiler goes off.
lowest setting and verify boiler goes off.
O
Measure natural gas input:
a.
Operate boiler 10 minutes.
b.
Turn off other appliances.
c.
At natural gas meter, measure time (in seconds) re-
quired to use one cubic foot of gas.
quired to use one cubic foot of gas.
D
#ALCULATE
3600 x 1000
number of seconds from step c
= Btuh
E
"TUH
boiler rating label.
O
#HECK
downstream test tapping on main gas valve. Manifold pres-
sure for natural gas should be 3.5" w.c. and for propane gas
should be 10" w.c.
sure for natural gas should be 3.5" w.c. and for propane gas
should be 10" w.c.
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Observe several operating cycles for proper operation.
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Set room thermostat to desired room temperature.
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&ILL
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Review all instructions shipped with this boiler with owner
or maintenance person. Return instructions to envelope
and give to owner or place in pocket inside front panel in
boiler.
or maintenance person. Return instructions to envelope
and give to owner or place in pocket inside front panel in
boiler.
O
O
O
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