Envision R-410A - Electrical Connections

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ENVISION RESIDENTIAL INSTALLATION MANUAL
Electrical Connections
General
Be sure the available power is the same voltage and phase as that shown on the unit serial plate. Line and low voltage
wiring must be done in accordance with local codes or the National Electric Code, whichever is applicable.
Unit Power Connection
 ConnecttheincominglinevoltagewirestoL1andL2ofthecontactorasshowninFigure13Cforsingle-phaseunit.Consult
theUnitElectricalDataintheSpecicationCatalogforcorrectfusesizes.
 Openlowerfrontaccesspanel.Removegroundfastenerfrombottomofcontrolbox(Figure13B).Swingopencontrolbox
(Figure13A).Insertpowerwiresthroughknockoutsonlowerleftsideofcabinet.Routewiresthroughleftsideofcontrolbox
andconnecttocontactorandground(Figure13C).Closecontrolboxandreplacegroundingfastenerbeforeunitstart-up.
Accessory Relay
A set of “dry” contacts has been provided to control accessory devices, such as water solenoid valves on open loop instal-
lations,electronicaircleaners,humidiers,etc.Thisrelaycontactshouldbeusedonlywith24voltsignalsandnotlinevoltage
power. The relay has both normally open and normally closed contacts and can operate with either the fan or the compressor.
UseDIPswitchSW2-3tocycletherelaywithfanorcompressor.Therelaycontactsareavailableonterminals#2and#3of
P3.
208 Volt Operation
AllEnvision208/230unitsarefactorywiredfor230voltoperation.For208voltoperation,theredandbluetransformer
wires must be switched on terminal strip PS.
GroundFastenerWire Insert
Location
Figure 13C:
LineVoltage208-230/60/1controlbox
L1
L2
Figure 13B:
Wire access (control box closed)
Figure 13A:
Wire access (control box open)