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

Models: 48SS018-060

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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.

		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
FL	Ð	Fuse Link
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

ICM	Ð	Integrated Control Motor
IDM	Ð	Induced-Draft 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
SEC	Ð	Secondary
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. 30 Ð 208/230-1-60 Wiring Diagram, Units 48SX048,060

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

Contents

Installation, Start-Upand Service Instructions CONTENTSSAFETY CONSIDERATIONS Fig. 1 Ð Unit 48SX Shown With Optional Base RailELECTRICAL REQD CLEARANCES FOR SERVICING. in. mm ELECTRICAL REQD CLEARANCES FOR SERVICING. in. mm ELECTRICAL REQD CLEARANCES FOR SERVICING. in. mm ELECTRICAL COND Step 5 Ð Rig and Place Unit RECEIVING AND INSTALLATIONStep 1 Ð Check Equipment Step 2 Ð Provide Unit SupportPART NUMBER Fig. 10 Ð Roof Curb DimensionsCURB Fig. 13 Ð Suggested Rigging for Units With Fig. 11 Ð Slab Mounting DetailsFig. 12 Ð Suggested Rigging for Units Without Base RailStep 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. 17 Ð Lance Location for Vertical Duct Table 3 Ð Maximum Gas Flow CapacityFig. 16 Ð Supply and Return Duct Openings Fig. 18 Ð Vertical Duct Cover RemovedFig. 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-UPSTART-UP Start Up Heating Section and Make AdjustmentsFig. 23 Ð Fan Blade Clearance 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 CHARGEa.Outdoor ambient-airtemperature F db b.Evaporator inlet-airtemperature F wbTable 8B Ð Superheat Charging Table, 48SS024 Table 8A Ð Superheat Charging Table, 48SS018Table 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 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 MAINTENANCEEvaporator Blower and Motor Fig. 34 Ð Blower Housing and Flue Collector BoxAir Filter Unit Top RemovalFig. 36 Ð Removal of Motor and Blower Wheel Fig. 35 Ð Burner Access PanelFig. 37 Ð Burner Rack Removed Condenser Fan Condenser Coil, Evaporator Coil, and CondenCooling TROUBLESHOOTINGHeating Cooling contLED Troubleshooting Ð Error Code SERVICE TRAININGCALL FOR FREE CATALOG Page III. START-UP TEMPERATURESRemove and Store in Job File I. PRELIMINARY INFORMATION