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

Models: 48SS018-060

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		LEGEND
AWG	Ð American Wire Gage		PWR	Ð Power
BR	Ð Blower Relay		QT	Ð Quadruple Terminal
C	Ð Contactor		RS	Ð Rollout Switch
CAP	Ð	Capacitor	TRAN	Ð Transformer
CH	Ð Crankcase Heater			Field Splice
COMP	Ð Compressor Motor			Field Splice
CR	Ð Combustion Relay
EQUIP	Ð	Equipment		Terminal (Marked)
FL	Ð	Fuse Link		Terminal (Marked)
FS	Ð	Flame Sensor		Terminal (Unmarked)
FU	Ð	Fuse		Terminal (Unmarked)
GND	Ð Ground			Splice
GVR	Ð Gas Valve Relay			Splice
HS	Ð Hall Effect Sensor
HV TRAN	Ð	High-Voltage Transformer		Splice (Marked)

IÐ Ignitor

	IDM	Ð	Induced-Draft Motor	Factory Wiring
	IFM	Ð	Indoor-Fan Motor	Field Control Wiring
	IGC	Ð	Integrated Gas Control
				Field Power Wiring
	IP	Ð	Internal Protector
	LS	Ð	Limit Switch	Accessory or Optional Wiring
	MGV	Ð Main Gas Valve		To Indicate Common Potential
	NEC	Ð	National Electrical Code
				Only, Not to Represent Wiring
	OFM	Ð Outdoor-Fan Motor

NOTES:

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

2.Use copper conductors only.

Fig. 27 Ð 208/230-3-60 Wiring Diagram, Units 48SS030-060

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

Contents

CONTENTS SAFETY CONSIDERATIONSFig. 1 Ð Unit 48SX Shown With Optional Base Rail 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 RECEIVING AND INSTALLATION Step 1 Ð Check EquipmentStep 2 Ð Provide Unit Support Step 5 Ð Rig and Place UnitPART NUMBER Fig. 10 Ð Roof Curb DimensionsCURB Fig. 11 Ð Slab Mounting Details Fig. 12 Ð Suggested Rigging for Units WithoutBase Rail 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 Table 3 Ð Maximum Gas Flow Capacity Fig. 16 Ð Supply and Return Duct OpeningsFig. 18 Ð Vertical Duct Cover Removed 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 CHECKING AND ADJUSTING REFRIGERANT CHARGE a.Outdoor ambient-airtemperature F dbb.Evaporator inlet-airtemperature F wb EVAPORATOR AIRFLOW AND AIRFLOW ADJUSTMENTSTable 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 DropFig. 34 Ð Blower Housing and Flue Collector Box Air FilterUnit Top Removal 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 TEMPERATURES Remove and Store in Job FileI. PRELIMINARY INFORMATION III. START-UP