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Carrier 48SS018-060, 48SX024-060 user manual

Models: 48SS018-060

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LEGEND

AWG	Ð	American Wire Gage
BR	Ð	Blower Relay

CÐ Contactor

CAP	Ð	Capacitor
COMP	Ð Compressor Motor
CR	Ð Combustion Relay
EQUIP	Ð	Equipment
FS	Ð	Flame Sensor
FU	Ð	Fuse
GND	Ð Ground
GVR	Ð Gas Valve Relay
HS	Ð Hall Effect Sensor
HV TRAN	Ð	High-Voltage Transformer

IÐ Ignitor

IDM	Ð	Induced-Draft Motor
IFM	Ð	Indoor-Fan Motor
IGC	Ð	Integrated Gas Control
LS	Ð	Limit Switch
MGV	Ð Main Gas Valve
NEC	Ð	National Electrical Code
OFM	Ð Outdoor-Fan Motor
PWR	Ð Power

QT	Ð Quadruple Terminal
RS	Ð Rollout Switch
TRAN	Ð Transformer
	Field Splice
	Terminal (Marked)
	Terminal (Unmarked)
	Splice
	Splice (Marked)
	Factory Wiring
	Field Control Wiring
	Field Power Wiring
	Accessory or Optional Wiring
	To Indicate Common Potential
	Only, Not to Represent Wiring

NOTES:

1.If any of the original wire furnished must be replaced, it must be re- placed with type 90 C wire or its equivalent.

2.Use copper conductors only.

Fig. 33 Ð 460-3-60 Wiring Diagram, Units 48SX036-048

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Carrier 48SS018-060, 48SX024-060 user manual

Contents

Fig. 1 Ð Unit 48SX Shown With Optional Base Rail CONTENTSSAFETY CONSIDERATIONS Installation, Start-Upand Service InstructionsELECTRICAL REQD CLEARANCES FOR SERVICING. in. mm ELECTRICAL REQD CLEARANCES FOR SERVICING. in. mm ELECTRICAL REQD CLEARANCES FOR SERVICING. in. mm ELECTRICAL COND Step 2 Ð Provide Unit Support RECEIVING AND INSTALLATIONStep 1 Ð Check Equipment Step 5 Ð Rig and Place UnitPART NUMBER Fig. 10 Ð Roof Curb DimensionsCURB Base Rail Fig. 11 Ð Slab Mounting DetailsFig. 12 Ð Suggested Rigging for Units Without Fig. 13 Ð Suggested Rigging for Units WithStep 6 Ð Connect Condensate Drain Table 1 Ð Physical Data Ð Unit 48SS Table 2 Ð Physical Data Ð Unit 48SX Fig. 15 Ð Sediment Trap Fig. 18 Ð Vertical Duct Cover Removed Table 3 Ð Maximum Gas Flow CapacityFig. 16 Ð Supply and Return Duct Openings Fig. 17 Ð Lance Location for Vertical DuctStep 10 Ð Install Electrical Connections Fig. 20 Ð Vertical Discharge Cover RemovedTable 4A Ð Electrical Data Ð Unit 48SS Table 4B Ð Electrical Data Ð Unit 48SX Fig. 21 Ð High- and Control-VoltageConnections PRE-START-UP Fig. 22 Ð Easy Select Interface BoardSTART-UP Start Up Heating Section and Make AdjustmentsFig. 23 Ð Fan Blade Clearance Fig. 24 Ð Burner Assembly Fig. 25 Ð Monoport Burners Start Up Cooling Section and Make Adjustments Table 7 Ð LED IndicationsPage Page Page Page Page Page Page Page Proceed as follows CHECKING AND ADJUSTING REFRIGERANT CHARGEEVAPORATOR AIRFLOW AND AIRFLOW ADJUSTMENTS 4.Measure and record the followingTable 8A Ð Superheat Charging Table, 48SS018 Table 8B Ð Superheat Charging Table, 48SS024Table 8D Ð Superheat Charging Table, 48SS036 Table 8C Ð Superheat Charging Table, 48SS030Table 8E Ð Superheat Charging Table, 48SS042 Table 8H Ð Superheat Charging Table, 48SS060 Table 9B Ð Superheat Charging Table, 48SX030 Table 9A Ð Superheat Charging Table, 48SX024Table 9C Ð Superheat Charging Table, 48SX036 Table 9E Ð Superheat Charging Table, 48SX048 Table 9D Ð Superheat Charging Table, 48SX042Table 9F Ð Superheat Charging Table, 48SX060 Table 10 Ð Required Suction-TubeTemperature F Deduct 10% from Cfm and Watts for 208 V OperationDeduct 10% from Cfm and Watts for 208 V Operation Deduct 10% from Cfm and Watts for 208 V OperationDeduct 10% from Cfm and Watts for 208 V Operation MAINTENANCE Table 17 Ð Wet Coil Pressure DropUnit Top Removal Fig. 34 Ð Blower Housing and Flue Collector BoxAir Filter Evaporator Blower and MotorFig. 36 Ð Removal of Motor and Blower Wheel Fig. 35 Ð Burner Access PanelFig. 37 Ð Burner Rack Removed Condenser Coil, Evaporator Coil, and Conden Condenser FanTROUBLESHOOTING CoolingCooling cont HeatingLED Troubleshooting Ð Error Code SERVICE TRAININGCALL FOR FREE CATALOG Page III. START-UP Remove and Store in Job FileI. PRELIMINARY INFORMATION ELECTRICAL