3. OUTDOOR UNIT INSTALLATION
3-1. CONNECTING WIRES FOR OUTDOOR UNIT
1)Remove the service panel.
2)Remove the conduit cover.
3)Attach the conduit connector to conduit plate with lock nut then secure it against unit with screws.
4)Connect ground wires of indoor/outdoor unit connecting wire (A) and power supply cord (K) to the TB support.
5)Loosen the terminal screw, and attach indoor/outdoor unit connecting wire (A) from the indoor unit correctly on the terminal block. Attach the wire to the terminal block securely so that its core cannot be seen, and no external force affects the connecting section of the terminal block.
6)Firmly tighten the terminal screws. After tightening, verify that the wires are tightly fastened.
7)Connect power supply cord (K).
8)Install the conduit cover.
9)Install the service panel securely.
19/32 in.
(15 mm)
(35 mm)
Lead wire
L1 L2
Power supply cord (K)
Service panel
Lock nut
Conduit cover
Grounding terminal
Conduit plate
Connector
| • | Make earth wire a little longer than others. |
Terminal block |
| (More than |
• | For future servicing, leave some slack in | |
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| the connecting wires. |
Indoor/outdoor unit connecting wire (A)
Power supply cord (K)
TB support
Conduit cover
3-2. FLARE CONNECTION
1)Cut the copper pipe as straight as possible with a pipe cutter. (Fig. 1, 2)
2)Remove all burrs from the cut section of the pipe, ensuring that precautions are taken to avoid getting metal shavings into the piping. (Fig. 3)
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4)Flaring work (Fig. 4, 5). Firmly hold copper pipe in the dimension shown in the table. Select A mm from the table according to the tool you use.
5)Check
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| A inch (mm) |
| Tightening torque | ||
Pipe diameter |
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inch | Clutch | Clutch | Wing nut |
| ft•lb | |||
inch (mm) |
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(mm) | type tool | type tool | type tool | N•m | ||||
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| for R410A | for R22 | for R22 |
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ø 1/4 | (6.35) | 1/4 |
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| 0.06 to | 13.7 to 17.7 | 10 to 13 | |
(17) |
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| (140 to 180) | |||||
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| 0.08 |
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ø 3/8 | (9.52) | 3/8 |
| 0.04 to | (1.5 to | 34.3 to 41.2 | 25 to 30 | |
| 2.0) | |||||||
(22) |
| (350 to 420) | ||||||
0 to 0.02 | 0.06 | |||||||
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ø 1/2 | (12.7) | 1/2 | (0 to 0.5) | (1.0 to | 0.08 to | 49.0 to 56.4 | 36 to 42 | |
| 1.5) | |||||||
(26) |
| (500 to 575) | ||||||
| 0.10 | |||||||
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ø 5/8 | (15.88) | 5/8 |
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| (2.0 to | 73.5 to 78.4 | 54 to 58 | |
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| 2.5) | ||||||
(29) |
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| (750 to 800) | |||||
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| Good | No good |
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| 90° |
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| Copper |
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| pipe |
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| Tilted | Uneven | Burred |
| Fig. 1 |
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| Fig. 2 |
Burr | Copper pipe |
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| Spare reamer |
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| Pipe cutter |
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| Fig. 3 |
Flaring tool |
| A |
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| Die | Copper pipe | |
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Clutch type | Wing nut type | Flare nut |
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| Fig. 4 |
| Fig. 5 | |
Smooth all around | Inside is shin- |
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ing without any |
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| scratches. |
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Even length |
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all around | Fig. 6 |
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