Carrier EK, 48EJ, EW, EY024-048 installation instructions Ð Adjustable Heat Anticipator

LEGEND and NOTES for Fig. 56-60 Ð Typical Wiring Schematics

LEGEND

AHA	Ð Adjustable Heat Anticipator	IFC	Ð Indoor Fan Contactor	TC	Ð Thermostat Cooling
BP	Ð Building Pressure	IFCB	Ð Indoor Fan Circuit Breaker	TH	Ð Thermostat Heating
BR	Ð Burner Relay	IFM	Ð Indoor-Fan Motor	TRAN	Ð Transformer
C	Ð Contactor, Compressor	IFR	Ð Indoor-Fan Relay	UL	Ð Compressor Unloader
CAP	Ð Capacitor	IGC	Ð Integrated Gas Unit Controller	VFD	Ð Variable Frequency Drive
CB	Ð Circuit Breaker	IP	Ð Internal Protector		Terminal (Marked)
CC	Ð Cooling Compensator	L	Ð Light
CCB	Ð Controller Circuit Breaker	LPS	Ð Low-Pressure Switch
CCH	Ð Crankcase Heater	MGV	Ð Main Gas Valve		Terminal (Unmarked)
COM	Ð Communication	NC	Ð Normally Closed
COMP	Ð Compressor Motor	NO	Ð Normally Open		Terminal Block
CR	Ð Control Relay	OAT	Ð Outdoor-Air Thermistor
DM	Ð Damper Motor	OFC	Ð Outdoor-Fan Contactor		Splice
DP	Ð Duct Pressure	OFM	Ð Outdoor-Fan Motor
EC	Ð Enthalpy Control	PEC	Ð Power Exhaust Contactor		Factory Wiring
EQUIP	Ð Equipment	PEM	Ð Power Exhaust Motor
FLA	Ð Full Load Amps	PES	Ð Power Exhaust Sequencer		Field Wiring
FPT	Ð Freeze Protection Thermostat	PESC Ð Power Exhaust Sequencer
FU	Ð Fuse		Controller		To Indicate Common Potential Only,
GRD	Ð Ground	PL	Ð Plug Assembly
					Not To Represent Wiring
GVR	Ð Gas Valve Relay	R	Ð Relay
HPS	Ð High-Pressure Switch	RAT	Ð Return-Air Thermistor
HS	Ð Hall Effect Sensor	RS	Ð Rollout Switch
HV	Ð High Voltage	SAT	Ð Supply-Air Thermistor
IDM	Ð Induced-Draft Motor	TB	Ð Terminal Block

NOTES:

1.Connect TRAN1 to H4 for 460 v units. Connect to H3 for 230 v. If 208/230 v units are run with a 208 v power supply connect to H2.

2.Connect TRAN2 to black lead for 460 v units. Connect to orange lead for 230 v units. If 208/230 v units are run with a 208 v power supply connect to red lead.

3.Circuit breaker must trip amps are equal to or less than 156% FLA for CB1 and CB2. All others are 140%.

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

5.Compressors and/or fan motors are thermally protected.

6.Three phase motors are protected against primary single phasing conditions.

7.Red wire and violet wire are spliced together at the factory. The brown wire has a wire nut added at the factory.

TABLE A

THE FOLLOWING COMPRESSORS HAVE TWO PARALLEL WIRES RUN FROM TB1 TO THE COMPRESSORS

(NOT SHOWN ON LABEL DIAGRAM)

COMPRESSOR	VOLTAGE	WIRE
MODEL		QUANTITY
06D-537	208/230-3-60	2

TABLE B

THE FOLLOWING FAN MOTORS HAVE TWO PARALLEL WIRES RUN FROM TB1 TO THE FAN MOTORS

(NOT SHOWN ON LABEL DIAGRAM)

INDOOR	VOLTAGE	WIRE
MOTOR		QUANTITY
20 HP	208/230-3-60	2

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