Midea MGA-D10/N1 Manual page 54

MCAC-UTSM-2008-11
3.4.3 The procedures for connecting pipe
1) Connect the water inlets and water outlets of water pump box and indoor unit with soft connection and
charge water into the pipe to check whether there is leakage. Then connect the outdoor unit piping. Bend
the piping carefully and do not damage them.
2) The stop valve of the outdoor unit should be closed absolutely (as original state). Every time you connect
it, remove the nut of stop valve then connect the flaring pipe immediately (with 5 minutes). Before
connecting, use refrigerant to expel the air in the pipe.
3) Connect the Hi-stop valve and Lo-stop valve of A and B system in outdoor unit to water pump box with
piping. Make sure that the connection of both outdoor unit and water pump box should be corresponding.
4) The flexible pipe should be used on water pump side. (The bending angle should not exceed 90°. The
bending part is preferably in the middle of the pipe, the bigger the bending radius, the better it is. Do not
bend the pipe more than 3 times.)
5) Bending the connecting pipe of thin wall.
● Cut out a desired concave at the bending part of the insulating pipe.
● To avoid distortion or damage, please bend the pipe at its biggest radius.
● Use bender to get a pipe with small radius.
Note: Make sure to use insulation material for the copper tube which you purchase by yourself.
Installation
Installation
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