Weil-McLain CGI-4E Boiler User Manual


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Part Number 550-110-711/1108
37
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CGi-4E Gas-Fired Water Boiler — Boiler Manual
Check-out procedure — checklist8
❏ Boilerandheatdistributionunitslledwithwater?
❏ Automatic air vent, if used, open one full turn?
❏ Air purged from system?
❏ Air purged from gas piping? Piping checked for leaks?
❏ Correctlysizedmanifoldoricesinstalled?Referto
Table 2,
page 12, to check size and fuel type.
Correctlysizedmanifoldoricesmustbeused.
Failure to do so will cause severe personal in-
jury, death or substantial property damage.
❏ Followed operating instructions on boiler or in manual
Section
9 for proper start-up?
❏ Proper burner flame observed at high fire? Refer to
Check
burner flame
,manualSection7b.
❏ Verifythatboilerswitchestohighreafter60secondsof
operation.
❏ Test limit control — While burners are operating, move
indicator on limit control below actual boiler water tem-
perature.Burnersshouldgooffwhilecirculatorcontinues
to operate. Raise setting on limit control above boiler water
temperature and burners should reignite.
❏ Test additional field-installed controls — If boiler has a low
water cutoff, additional high limit or other controls, test for
operationasoutlinedbymanufacturer.Burnersshouldbe
operating and should go off when controls are tested. When
controls are restored, burners should reignite.
❏ Test ignition system safety device:
a. Connectmanometertooutletsideofgasvalve.
b. Startboiler,allowingfornormalstart-upcycletooc-
cur and main burners to ignite.
c. With main burners on, manually shut off gas supply at
manualmainshutoffgasvalve.Burnersshouldgooff.
d. Open manual main shutoff gas valve. Manometer
should confirm there is no gas flow.
e. Pilot will relight, flame sensing element will sense pilot
flame and main burners will reignite.
❏ Setlimitcontrol(s)tosystemtemperaturerequirements.
Adjust balancing valves and controls to provide design
temperature to system.
❏ For multiple zones, adjust flow so it is about the same in
each zone.
❏ Verifythermostatheatanticipator(ifavailable)setprop-
erly? Refer to
Field wiring,manualSection6, page 31,
Thermostat(s).
❏ Cycleboilerwiththermostat—Raisetohighestsettingand
verify boiler goes through normal start-up cycle. Lower to
lowest setting and verify boiler goes off.
❏ 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.
d. Calculategasinput:
e. Btuhcalculatedshouldapproximateinputratingon
boiler rating label.
❏ Checkmanifoldgaspressurebyconnectingmanometerto
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.
❏ Observe several operating cycles for proper operation.
❏ Setroomthermostattodesiredroomtemperature.
❏ Fill in Installation and service certificate below?
❏ 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.
Installation and service certificate
Boilermodel__________________Series__________CPnumber___________Dateinstalled___________
MeasuredBtuhinput____________________
Installer________________________________________________________________________________
(company) (address) (phone)
Installer’ssignature:_____________________________________
❏ Installation instructions have been followed.
❏ Checkoutsequencehasbeenperformed.
❏ Above information is certified to be correct.
❏ Information received and left with owner/maintenance person
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