DM17-03.01.56_en
Midea R410A 50Hz T1 Compressor Condensing Unit
62
the outdoor unit. Connect low pressure nitrogen to the liquid line service port.
Braze the liquid line to the high pressure valve (liquid valve) at the outdoor unit. Be sure to wrap
the valve body with a wet rag. Allow the nitrogen to continue flowing.
Carefully remove the rubber plugs from the evaporator liquid and vapor connections at the
indoor unit.
Braze the liquid line to the indoor liquid connection. Nitrogen should be flowing through the
evaporator coil.
Slide the plastic cap away from the vapor connection at the indoor coil. Braze the vapor line to
the evaporator vapor connection.
Too large torque will harm the bell mouthing and too small will cause leakage. Please determine
the torque according to the following table:
Pipe gauge
Tightening torque
Flare dimension A
Flare shape
N.m
Kgf.cm
Min.
Max.
Φ6.35mm
14.2~17.2
144~176
8.3mm
8.7mm
Φ9.52mm
32.7~39.9
333~407
12.0mm
12.4mm
Φ12.7mm
49.5~60.3
504~616
15.4mm
15.8mm
Φ16mm
61.8~75.4
630~770
18.6mm
19.0mm
Φ19mm
97.2~118.6
990~1,210
22.9mm
23.3mm
Protect the vapor valve with a wet rag and braze the vapor line connection to the outdoor unit.
The nitrogen flow should be exiting the system from the vapor 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 vapor valves.
Leak test all refrigerant piping connections including the service port flare caps to be sure they
are leak tight.
Summary of Contents for MCCU-03CN1
Page 19: ...Midea R410A 50Hz T1 Compressor Condensing Unit DM17 03 01 56_en 19 MCCU 07CN1 MCCU 10CN1 ...
Page 20: ...DM17 03 01 56_en Midea R410A 50Hz T1 Compressor Condensing Unit 20 MCCU 14CN1 MCCU 16CN1 ...
Page 23: ...Midea R410A 50Hz T1 Compressor Condensing Unit DM17 03 01 56_en 23 MCCU 70CN1 MCCU 105CN1 ...
Page 26: ...DM17 03 01 56_en Midea R410A 50Hz T1 Compressor Condensing Unit 26 MCCU 45CN1 ...
Page 31: ...Midea R410A 50Hz T1 Compressor Condensing Unit DM17 03 01 56_en 31 MCCU 45CN1 ...
Page 33: ...Midea R410A 50Hz T1 Compressor Condensing Unit DM17 03 01 56_en 33 MCCU 105CN1 ...
Page 77: ...Midea R410A 50Hz T1 Compressor Condensing Unit DM17 03 01 56_en 77 Hi pressure protection ...
Page 78: ...DM17 03 01 56_en Midea R410A 50Hz T1 Compressor Condensing Unit 78 Low pressure protection ...