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4.3.3 Connect to outdoor unit
4.3.4 Air evacuation
1. Connect the charge hose of the manifold gauge to service port on the outdoor unit’s low pressure
valve.
2. Connect another charge hose from the manifold gauge to the vacuum pump.
3. Open the Low Pressure side of the manifold gauge. Keep the High Pressure side closed.
4. Turn on the vacuum pump to evacuate the system.
5. Run the vacuum for at least 15 minutes, or until the Compound Meter reads -76cmHG (-105 Pa).
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