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

Models: 48SS018-060

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		LEGEND
AWG	Ð American Wire Gage
BR	Ð Blower Relay
C	Ð Contactor
CAP	Ð	Capacitor
CH	Ð Crankcase Heater
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
I	Ð	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

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.

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

Fig. 28 Ð 460-3-60 Wiring Diagram, Units 48SS036-060

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

Contents

SAFETY CONSIDERATIONS CONTENTSFig. 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 Step 1 Ð Check Equipment RECEIVING AND INSTALLATIONStep 2 Ð Provide Unit Support Step 5 Ð Rig and Place UnitCURB Fig. 10 Ð Roof Curb DimensionsPART NUMBER Fig. 12 Ð Suggested Rigging for Units Without Fig. 11 Ð Slab Mounting DetailsBase 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 Fig. 16 Ð Supply and Return Duct Openings Table 3 Ð Maximum Gas Flow CapacityFig. 18 Ð Vertical Duct Cover Removed Fig. 17 Ð Lance Location for Vertical DuctFig. 20 Ð Vertical Discharge Cover Removed Step 10 Ð Install Electrical ConnectionsTable 4A Ð Electrical Data Ð Unit 48SS Table 4B Ð Electrical Data Ð Unit 48SX Fig. 21 Ð High- and Control-VoltageConnections Fig. 22 Ð Easy Select Interface Board PRE-START-UPFig. 23 Ð Fan Blade Clearance Start Up Heating Section and Make AdjustmentsSTART-UP Fig. 24 Ð Burner Assembly Fig. 25 Ð Monoport Burners Table 7 Ð LED Indications Start Up Cooling Section and Make AdjustmentsPage Page Page Page Page Page Page Page EVAPORATOR AIRFLOW AND AIRFLOW ADJUSTMENTS CHECKING AND ADJUSTING REFRIGERANT CHARGEProceed as follows 4.Measure and record the followingTable 8B Ð Superheat Charging Table, 48SS024 Table 8A Ð Superheat Charging Table, 48SS018Table 8E Ð Superheat Charging Table, 48SS042 Table 8C Ð Superheat Charging Table, 48SS030Table 8D Ð Superheat Charging Table, 48SS036 Table 8H Ð Superheat Charging Table, 48SS060 Table 9C Ð Superheat Charging Table, 48SX036 Table 9A Ð Superheat Charging Table, 48SX024Table 9B Ð Superheat Charging Table, 48SX030 Table 9F Ð Superheat Charging Table, 48SX060 Table 9D Ð Superheat Charging Table, 48SX042Table 9E Ð Superheat Charging Table, 48SX048 Deduct 10% from Cfm and Watts for 208 V Operation Table 10 Ð Required Suction-TubeTemperature FDeduct 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 Table 17 Ð Wet Coil Pressure Drop MAINTENANCEAir Filter Fig. 34 Ð Blower Housing and Flue Collector BoxUnit Top Removal Evaporator Blower and MotorFig. 37 Ð Burner Rack Removed Fig. 35 Ð Burner Access PanelFig. 36 Ð Removal of Motor and Blower Wheel Condenser Fan Condenser Coil, Evaporator Coil, and CondenCooling TROUBLESHOOTINGHeating Cooling contCALL FOR FREE CATALOG SERVICE TRAININGLED Troubleshooting Ð Error Code Page I. PRELIMINARY INFORMATION Remove and Store in Job FileIII. START-UP ELECTRICAL