Connecting Refrigerant Tubing Between the Indoor & Outdoor Unit
CAUTION:
This system uses
After outdoor and indoor unit placement has been determined, route refrigerant tubing between the equipment in accordance with sound installation practices.
•When connecting refrigerant linesets together, it is recommended that dry nitrogen be flowing through the joints during brazing to prevent internal oxidation and scaling.
•Refrigerant tubing should be routed in a manner that minimizes the length of tubing and the number of bends in the tubing. If precise forming of refrigerant lines is required, a copper tubing bender is recommended. Avoid sharp bends and contact of the refrigerant lines with metal surfaces.
•Refrigerant tubing should be supported in a manner that the tubing will not vibrate or abrade during system operation.
•Tubing should be kept clean of foreign debris during installation.
•Every effort should be made by the installer to ensure that the field installed refrigerant containing components of the system have been installed in accordance with these instructions and sound installation practices to insure reliable system operation and longevity.
•The maximum recommended interconnecting refrigerant line lengths is 75 ft.and the vertical elevation difference between the indoor and outdoor sections should not exceed 20 ft.
COPPER WIRE SIZE — AWG
(1% Voltage Drop)
| Supply Wire |
| Supply Circuit | |||
200 |
| 150 | 100 |
| 50 | Ampacity |
6 |
| 8 | 10 |
| 14 | 15 |
4 |
| 6 | 8 |
| 12 | 20 |
4 |
| 6 | 8 |
| 10 | 25 |
|
|
|
|
|
|
|
4 |
| 4 | 6 |
| 10 | 30 |
3 |
| 4 | 6 |
| 8 | 35 |
3 |
| 4 | 6 |
| 8 | 40 |
|
|
|
|
|
|
|
2 |
| 3 | 4 |
| 6 | 45 |
2 |
| 3 | 4 |
| 6 | 50 |
2 |
| 3 | 4 |
| 6 | 55 |
1 |
| 2 | 3 |
| 4 | 60 |
NOTE: Wire Size based on N.E.C. for 60° type copper conductors.
Table 1. Copper Wire Size
•To maintain the unit's warranty, it is required that a filter drier be installed when the system is open to the atmosphere. This includes, but is not limited to, replacing the evaporator and/or condenser of a system. The filter drier must be installed in strict accordance with the manufacturer’s installation instructions.
•Optional equipment such as liquid line solenoid valves, low ambient, etc., should be installed in strict accordance with the manufacturer’s installation instructions.
ELECTRICAL WIRING
WARNING:
To avoid risk of electrical shock, personal injury, or death, disconnect all electrical power to the unit before performing any maintenance or service. The unit may have more than one electrical supply.
Label all wires prior to disconnection when servicing the unit. Wiring errors can cause improper and dangerous operation.
•All electrical connections must be in compliance with all applicable local codes and ordinances, and with the current revision of the National Electric Code (ANSI/NFPA 70).
•For Canadian installations the electrical connections and grounding shall comply with the current Canadian Electrical Code (CSA C22.1 and/or local codes).
Pre-Electrical Checklist
√Verify that the voltage, frequency, and phase of the supply source match the specifications on the unit rating plate. See Table 11 (page 16).
√Verify that the service provided by the utility is sufficient to handle the additional load imposed by this equipment. Refer to the unit wiring label for proper voltage wiring.
√Verify factory wiring is in accordance with the unit wiring diagram (Figure 11, page 17). Inspect for loose connections.
Line Voltage
•A wiring diagram is located on the inside cover of the electrical box of the outdoor unit. The installer should become familiar with the wiring diagram before making any electrical connections to the outdoor unit.
•An electrical disconnect must be located within sight of and readily accessible to the unit. This switch shall be capable of electrically
•Line voltage to the unit should be supplied from a dedicated branch circuit containing the correct fuse or circuit breaker for the unit. Incoming field wiring and minimum size of electrical conductors and circuit protection must be in compliance with information listed on the outdoor unit data label.Any other wiring methods must be acceptable to authority having jurisdiction.
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