Johnson Controls 13 SEER Section Viii Electrical Connections, General Information & Grounding

347337-UIM-A-0408

IT IS UNLAWFUL TO KNOWINGLY VENT, RELEASE OR DIS- CHARGE REFRIGERANT INTO THE OPEN AIR DURING REPAIR, SERVICE, MAINTENANCE OR THE FINAL DISPOSAL OF THIS UNIT.

WHEN THE SYSTEM IS FUNCTIONING PROPERLY AND THE OWNER HAS BEEN FULLY INSTRUCTED, SECURE THE OWNER’S APPROVAL.

SECTION VIII: ELECTRICAL

CONNECTIONS

GENERAL INFORMATION & GROUNDING

Check the electrical supply to be sure that it meets the values specified on the unit nameplate and wiring label.

Power wiring, control (low voltage) wiring, disconnect switches and over current protection must be supplied by the installer. Wire size should be sized per NEC requirements.

All field wiring must USE COPPER CONDUCTORS ONLY and be in accordance with Local, National, Fire, Safety & Electrical Codes. This unit must be grounded with a separate ground wire in accor- dance with the above codes.

The complete connection diagram and schematic wiring label is located on the inside surface of the unit service access panel.

FIELD CONNECTIONS POWER WIRING

1.Install the proper size weatherproof disconnect switch outdoors and within sight of the unit.

2.Remove the screws at the top and sides of the corner cover. Slide corner cover down and remove from unit.

3.Run power wiring from the disconnect switch to the unit.

4.Route wires from disconnect through power wiring opening pro- vided and into the unit control box as shown in Figure 6.

5.Install the proper size time-delay fuses or circuit breaker, and make the power supply connections.

CONTACTOR

GROUND

LUG

LOW

VOLTAGE

BOX

REVERSIBLE HIGH		“FINGERED”
	DUAL	BUSHING
VOLTAGE CONDUIT PLATE
	RUN/FAN
	CAPACITOR

FIGURE 7: Outdoor Unit Control Box

FIELD CONNECTIONS CONTROL WIRING

1.Route low voltage wiring into bottom of control box as shown in Figure 6. Make low voltage wiring connections inside the low volt- age box per Figures 7-9.

2.The complete connection diagram and schematic wiring label is located on the inside surface of the unit service access panel.

3.Replace the corner cover removed in Step 2.

4.All field wiring to be in accordance with national electrical codes (NEC) and/or local-city codes.

NOTE: A Start Assist Kit is available and recommended for long line set applications or in areas of known low voltage problems.

5.Mount the thermostat about 5 ft. above the floor, where it will be exposed to normal room air circulation. Do not place it on an out- side wall or where it is exposed to the radiant effect from exposed glass or appliances, drafts from outside doors or supply air grilles.

6.Route the 24-volt control wiring (NEC Class 2) from the outdoor unit to the indoor unit and thermostat.

NOTE: To eliminate erratic operation, seal the hole in the wall at the thermostat with permagum or equivalent to prevent air drafts affecting the operation of in the thermostat.

ALL FIELD WIRING TO BE IN ACCORDANCE WITH ELECTRIC CODE (NEC) AND/OR LOCAL CODES

POWER WIRING

208/230-1-60

24 VOLT CONTROL WIRING MINIMUM 18 GA. WIRE (NEC CLASS 2)

POWER WIRING

CONTROL WIRING

FACTORY WIRING

FURNACE OR AIR HANDLER TERMINAL BLOCK

GND.

LUG

CONTACTOR TERMINALS

COIL

*TERMINAL W IS ONLY REQUIRED ON SYSTEMS WITH HEAT.

C Y R G W

Y R G W

*

CONDENSING UNIT ROOM THERMOSTAT

ALL OUTDOOR WIRING MUST BE WEATHERPROOF. USE COPPER CONDUCTORS ONLY.

FIGURE 8: Typical Field Wiring (Air Handler / Electrical Heat)

6 Johnson Controls Unitary Products