Crown Bermuda Installation Manual

X Wiring

1)120VoltWiring-Theboilershouldbeprovidedwithitsown15Abranchcircuitwithfuseddisconnect.All120voltcon-

nectionsaremadeinsidethejunctionboxontheleftsideoftheboiler.Removethetransformertogainaccesstothisbox

(alsoseeFigures16through17):

• Hot(“black”)-Wirenuttoblacktransformerlead

• Neutral(“white”)-Wirenuttowhitetransformerlead

• Ground(“green”orbare)-Groundscrewinsidejunctionbox.

2)ThermostatWiring-Followthermostatmanufacturerinstructions.Toinsureproperthermostatoperation,avoidinstalla-

tioninareasofpooraircirculation,hotspots(nearanyheatsourceorindirectsunlight),coldspots(outsidewalls,walls

adjacenttounheatedareas,locationssubjecttodrafts).ProvideClassIIcircuitbetweenthermostatandboiler.Connect

thermostatwireleadstothebluetransformerleadandbrownrelayleadinsidethejunctionbox.Settheheatanticipator

to 0.2A.

Feeder Wiring for Boilers Equipped with Hydrolevel CG400A Low Water Cut-offs

1)UsingHydrolevelVXT-24TWO-WIREfeeder-Donotalterfactoryboilerwiring.ConnectVXT-24toCG400Aasfol-

lows:

• ConnecttheBLACKleadonthefeedertoterminalAontheLWCO

• ConnecttheWHITEleadonthefeedertoterminal2ontheLWCO

2)UsingHydrolevelVXT-24THREE-WIREfeeder-Donotalterfactoryboilerwiring.ConnectVXT-24toCG400Aas

follows:

• ConnecttheBLACKleadonthefeedertoterminal1ontheLWCO

• ConnecttheWHITEleadonthefeedertoterminal2ontheLWCO

• ConnecttheREDleadonthefeedertoterminalAontheLWCO

3)UsingMcDonnell&MillerWF2-U-24feeder-Donotalterfactoryboilerwiring.ConnectWF2-U-24toCG400Aasfol-

lows:

• ConnectterminalW onthefeedertoterminalA ontheLWCO

• ConnectterminalNonthefeedertoterminal2ontheLWCO

• ConnectterminalHonthefeedertoterminal1 ontheLWCO

CAUTION

DonotattempttoconnectaMcDonnell&Millermodel#101Afeeder,orotherfeederwithoutadelay,toaBSIboiler

equippedwithaHydrolevelCG400lowwatercutoff.Doingsocoulddestroytheboilertransformerand/oroodthesys-

tem.

WARNING

Allwiringandgroundingmustbedoneinaccordancewiththeauthorityhavingjurisdictionor,intheabsenceofsuch

requirements,withtheNationalElectricalCode(ANSI/NFPA70)