Weil-McLain CGS-4E Manual

A SERVICE OF

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Part number 550-110-282/1108

31

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CGs-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manual

Section

2a 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?

❏ Verifythattheboilerswitchestohighreafter60seconds

of main ﬂame operation.

❏ Proper burner ﬂame observed at high ﬁre? Refer to

Check

burner ﬂame

,manualSection7b.

❏ 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properly?

Refer to

Field wiring,manualSection6, 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certiedtobecorrect.

❏ Information received and left with owner/maintenance person