Midea MCCDH30A-TA3SL, Technical & Service Manual

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Air-cooled modular chiller unit
1 .4 Installation of damping devices
※
Damping devices must be provided between the unit and its foundation.
By means of the Φ15mm diameter installation holes on the steel frame of the unit base, the unit can be
fastened on the foundation through the spring damper. See
figure above
(Schematic diagram of installation
dimension of the unit) for details about center distance of the installation holes. The damper does not go with
the unit, and the user can select the damper according to the relevant requirements. When the unit is
installed on the high roof or the area sensitive to vibration, please consult the relevant persons before
selecting the damper.
※
Installation steps of the damper
Step Content
1
Make sure that the flatness of the concrete foundation is within ±3mm, and then place the unit on the
cushion block.
2
Raise the unit to the height suitable for installation of the damping device. Remove the clamp nuts of the
damper.
3
Place the unit on the damper, and align the fixing bolt holes of the damper with the fixing holes on the unit
base.
4 Return the clamp nuts of the damper to the fixing holes on the unit base, and tighten them into the damper.
5
Adjust the operational height of the damper base, and screw down the leveling bolts. Tighten the bolts by
one circle to ensure equal height adjustment variance of the damper.
6 The lock bolts can be tightened after the correct operational height is reached.
1 .2 Water System Installation
Notice:
●
After the unit is in place, chilled water pipes can be laid.
●
The relevant installation regulations should be abided with when conducting connection of water pipes.
●
The pipelines should be free of any impurity, and all chilled water pipes must conform to local rules and
regulations of pipeline engineering.
1 .2.1 Connection requirements of chilled water pipes
a. All chilled water pipelines should be thoroughly flushed, to be free of any impurity, before the unit is
operated. Any impurity should not be flushed to or into the heat exchanger.
b. Water must enter the heat exchanger through the inlet; otherwise the performance of the unit will decline.
c. The inlet pipe of the evaporator must be provided with a target flow controller, to realize flow-break
protection for the unit. Both ends of the target flow controller must be supplied with horizontal straight pipe
sections whose diameter is 5 times that of the inlet pipe. The target flow controller must be installed in strict
accordance with “Installation & Regulation Guide for Target Flow Controller”. The wires of the target flow
controller should be led to the electric cabinet through shielded cable. The working pressure of the target
flow controller is 1.0MPa, and its interface is 1 inch in diameter. After the pipelines are installed, the target
flow controller will be set properly according to the rated water flow of the unit.