Shinko SOVC-48CN1-RC7C, Техническое руководство, Страница: 39 / 68

SHINKO- 4
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5 ton High Efficiency A5 Duct Technical Manual
38
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After the refrigerant connections are made, seal the gap around the connections with pressure
sensitive gasket.
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Be sure to cover all the exposed parts of the flare pipe joints and refrigerant pipe on the liquid-side
and the gas-side with insulating materials. Ensure that there is no gap between them. Incomplete
insulation may cause water condensation.
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Outdoor unit pipe connection:
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Notes: Never attempt to repair any brazed connections while the system is under pressure.
Personal injury could result.
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Remove the cap and Schrader core from both the liquid and suction service valve service ports at
the outdoor unit. Connect low pressure nitrogen to the liquid line service port.
✓
Braze the liquid line to the liquid valve at the outdoor unit. Be sure to wrap the valve body with a
wet rag. Allow the nitrogen to continue flowing. Refer to the refrigerant pipe size list for proper
liquid line sizing.
✓
Carefully remove the rubber plugs from the evaporator liquid and suction connections at the
indoor coil.
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Braze the liquid line to the evaporator liquid connection. Nitrogen should be flowing through the
evaporator coil.
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Slide the plastic cap away from the suction connection at the indoor coil. Braze the suction line to
the evaporator suction connection.
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Protect the suction valve with a wet rag and braze the suction line connection to the outdoor unit.
The nitrogen flow should be exiting the system from the suction service port connection. After this
connection has cooled, remove the nitrogen source from the liquid fitting service port.
✓
Replace the Schrader core in the liquid and suction valves.
✓
Leak test all refrigerant piping connections including the service port flare caps to be sure they are
leak tight.