Refrigerant charging should only be carried out by a qualified air con- ditioning contractor.
Compressor damage will occur if system is improperly charged. On new system installations, charge system per tabular data sheet for the matched coil and follow guidelines in this instruction.
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.
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 accordance 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 from the control box cover and remove from unit.
3.Run power wiring from the disconnect switch to the unit.
4.Route wires from disconnect through power wiring opening provided and into the unit control box as shown in Figures 6 or 7.
5.Install the proper size
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| Contactor |
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| Contactor | |
Defrost |
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| Defrost |
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Control |
| Start | Control |
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Board |
| Board |
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| Relay |
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| (Optional) | Fan |
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| Relay |
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Low |
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| Low |
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Voltage |
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| Voltage |
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Box |
| Dual | Box |
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“Fingered” |
| Run/Fan | “Fingered” |
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| Capacitor |
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Bushing |
| Bushing |
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Reversible High |
| Start Capacitor | Reversible High |
| Fan | |
Ground | Ground | Capacitor | ||||
Voltage Conduit Plate | (Optional) | |||||
Lug | Voltage Conduit Plate | Lug |
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FIGURE 6: Outdoor Unit Control Box - Single Phase | FIGURE 7: Outdoor Unit Control Box - Three Phase | |||||
FIELD CONNECTIONS CONTROL WIRING
1.Route low voltage wiring into bottom of control box as shown in Fig- ures 6 or 7. Make low voltage wiring connections inside the low volt- age box per Figures
2.The complete connection diagram and schematic wiring label is located on the inside surface of the unit service access panel.
3.Replace the control box cover removed in Step 2.
4.All field wiring to be in accordance with national electrical codes (NEC) and/or
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 outside 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
NOTICE
To eliminate erratic operation, seal the hole in the wall at the thermo- stat with permagum or equivalent to prevent air drafts affecting the operation of in the thermostat.
A Start Assist Kit is available and recommended for long line set applications or in areas of known low voltage problems.
Johnson Controls Unitary Products | 7 |