Carrier 48GP (N) 024-060 Easy SELECT-48GP, Control Voltage Connections, Standard Connection

Approved for outdoor installation on wood flooring or on class A, B or C roof covering materials.

Before performing service or maintenance operations on system, turn off main power to unit and install lock-out tag. Turn off accessory heater power switch if applicable. Elec- trical shock could cause severe injury or death.

Puron® (R-410A) systems operate at higher pressures than standard R-22 systems. Do not use R-22 service equipment or components on Puron® (R-410A) equipment. Ensure service equipment is rated for Puron® (R-410A)

INTRODUCTION

NOTE: The minimum outdoor cooling operating temperature for units using this ICM motor option is 55°F. To operate in cooling at lower ambients the Motor Master™ II low ambient kit is

Make sure that the power supply to the unit is switched OFF before making any wiring changes. With disconnect switch open, move yellow wire from transformer (3/16 in.) terminal marked 230 to terminal marked 200. This retaps transformer to primary voltage of 208-v. Electrical shock could cause serious injury or death.

EASY SELECT™—48GP

HIGH VOLTAGE
POWER LEADS	POWER
(SEE UNIT WIRING
	SUPPLY
LABEL)
GND	FIELD-SUPPLIED
	FUSED DISCONNECT

required.

These instructions cover the installation of a Carrier Small Packaged Product with ICM motor-factory installed option (FIOP). This option can be selected as a FIOP on gas heating/electric cooling (48GP), dual fuel–electric heat pump with gas heat back-up (48JZ), electric cooling (50GL) or electric heat pump (50JZ) units with Puron®.

RECEIVING AND INSTALLATION

Refer to unit Installation Instructions.

CONTROL BOX

	BLK(DH)
	YEL(Y)
	GRN(G)
LOW-VOLTAGE	RED(R)
POWER LEADS
(SEE UNIT	BRN(C)
WIRING LABEL)
	WHI(W1)

DHUM

Y

G

R

C

W1

THERMOSTAT (TYPICAL)

ICM FIOP PRE-START-UP

Step 1—Electrical Connections

CONTROL VOLTAGE CONNECTIONS

NOTE: Do not use any type of power-stealing thermostat, with- out connecting the C (Common) terminal. Failure to follow this note could result in unit control problems.

Use no. 18 American Wire Gage (AWG) color-coded, insulated (35 C minimum) wires to make the control voltage connections between the thermostat and the unit. If the thermostat is located more than 100 ft from the unit (as measured along the control voltage wires), use no. 16 AWG color-coded, insulated (35 C minimum) wires.

STANDARD CONNECTION

Remove knockout hole located in the heat section panel adjacent to the service access panel (See unit installation package). Remove the rubber grommet from the installer’s packet (included with unit)

SPLICE BOX

LEGEND

Field Control-Voltage Wiring

Field High-Voltage Wiring

C01026

Fig. 2—48GP High- and Control-Voltage

Connections

HIGH VOLTAGE
POWER LEADS	POWER
(SEE UNIT WIRING
	SUPPLY
LABEL)
	FIELD-SUPPLIED
	FUSED DISCONNECT
	GND

and install grommet in the knockout opening. Provide a drip loop before running wire through panel. Run the low-voltage leads from the thermostat, through the inlet hole, and into unit low-voltage splice box. Locate 18-gage wires leaving control box. These low-voltage connection leads can be identified by colors (See Fig. 2, 3, 4 or 5). Ensure the leads are long enough to be routed into the low-voltage splice box (located below right side of control box). Route leads through hole in bottom of control box and make low-voltage connections (See Fig. 2, 3, 4 or 5). Secure all cut wires, so that they do not interfere with operation of unit.

CONTROL BOX
	BLK (DH)
	WHT(W1)
	YEL(Y)
LOW-VOLTAGE	GRN(G)
POWER LEADS
(SEE UNIT	RED(R)
WIRING LABEL)
	BRN(C)
	ORN(O)

DHUM

W/W1

Y/Y2

G

R

C

O/W2

THERMOSTAT (THERMIDISTAT ™ )

SPECIAL PROCEDURES FOR 208–V OPERATION

SPLICE BOX

FIELD CONTROL - VOLTAGE WIRING

FIELD HIGH - VOLTAGE WIRING

C01107

Fig. 3—48JZ High- and Control-Voltage

Connections

EASY SELECT™ CONFIGURATION TAPS FOR 48GP

Easy Select™ taps are used by the installer to configure a system.

2