Installation
Soap water method
1. Remove the caps from the | Liquid side | |
2. Remove the |
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3. To open the |
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counterclockwise approximately 90°, wait for about |
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2~3 sec, and close it. | Gas side | |
4. Apply a soap water or a liquid neutral detergent on | ||
the indoor unit connection or outdoor unit | ||
(Open) | ||
connections by a soft brush to check for leakage of | ||
the connecting points of the piping. | (Close) | |
5. If bubbles come out, the pipes have leakage |
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Evacuation |
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| Hexagonal wrench | Cap | |
1. Connect the charge hose end described in the |
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preceding steps to the vacuum pump to |
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evacuate the tubing and indoor unit. |
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Confirm the "Lo" knob of the manifold valve is |
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open. Then, run the vacuum pump. |
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The operation time for evacuation varies with |
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| Indoor unit |
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tubing length and capacity of the pump. The |
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following table shows the time required for |
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evacuation. |
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Required time for evacuation when 30 gal/h vacuum |
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pump is used |
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If tubing length is less | If tubing length is longer |
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| Outdoor unit |
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than 10m (33 ft) | than 10m (33 ft) |
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10 min. or more | 15 min. or more |
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2. When the desired vacuum is reached, close the |
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"Lo" knob of the manifold valve and stop the |
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vacuum pump. |
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Finishing the job |
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1. With a service valve wrench, turn the valve stem |
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of liquid side valve | Manifold valve |
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open the valve. |
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2. Turn the valve stem of gas side valve counter- | Pressure | Lo | Hi |
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clockwise to fully open the valve. | gauge |
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3. Loosen the charge hose connected to the gas |
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side service port slightly to release the pressure, | Open |
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then remove the hose. |
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4. Replace the flare nut and its bonnet on the gas |
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side service port and fasten the flare nut |
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securely with an adjustable wrench. This |
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process is very important to prevent leakage |
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from the system. |
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5. Replace the valve caps at both gas and liquid | Vacuum pump |
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side service valves and fasten them tight. |
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This completes air purging with a vacuum pump. |
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The air conditioner is now ready to test run. |
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| Installation Manual | 27 | |
ENGLISH
