Part Number: 9294045 10/14 9Section 2 InstallationElectrical ServiceDANGERCheck all wiring connections, including factoryterminals, before operation. Connections can becomeloose during shipment and installation.DANGERUnits with two power cords must be plugged intoindividual branch circuits. During movement, cleaningor repair it is necessary to unplug both power cords.nWarningThis appliance must be grounded and all field wiringmust conform to all applicable local and nationalcodes. Refer to rating plate for proper voltage. It is theresponsibility of the end user to provide the disconnectmeans to satisfy the authority having jurisdiction.VOLTAGEAll electrical work, including wire routing and grounding,must conform to local, state and national electrical codes.The following precautions must be observed:• The equipment must be grounded.• A separate fuse/circuit breaker must be provided foreach unit.• A qualified electrician must determine proper wire sizedependent upon location, materials used and lengthof run (minimum circuit ampacity can be used to helpselect the wire size).• The maximum allowable voltage variation is ±10% ofthe rated voltage at equipment start-up (when theelectrical load is highest).• Check all green ground screws, cables and wireconnections to verify they are tight before start-up.RATED AMPERAGES, HORSEPOWER, VOLTAGE &POWER CORD CHARTUnits with plugs are supplied with approximately 6ft(183cm) cords.Models 406 and 407 may be stacked using a stacking collar.In this case two 6ft (183cm) long grounded supply cordsand plugs are standard.Model Amps HP Voltage,Cycle, PhaseNEMAPlug402 4.01/5115/60/1 5-15P403 5.8406 4.0406-CA 4.0407 5.8407-CA 5.8ST4048 4.0ST4148 5.6 1/3UC4048 4.0 1/5UC4148 5.6 1/3Drain ConnectionsnWarningIf a refrigerated base does not have a condensateevaporator supplied, you must connect the condensateline to a suitable drain. Otherwise, water will collect onthe floor, causing a potentially hazardous situation.nWarningMoisture collecting from improper drainage can create aslippery surface on the floor and a hazard to employees.It is the owner’s responsibility to provide a container oroutlet for drainage.Heat of RejectionModel BUT/Hour402 1430403 1092406 1430406-CA 1430407 1092407-CA 1092ST4048 1430ST4148 1404UC4048 1430UC4148 1404