McQuay MDS030AR Applications Manual page 71

4.2 Indoor Unit Installation
To choose the position of installation
Improper installation position will affect the cooling and heating performance, or even cause
malfunction or accident. Follow the below instructions:
Ensure air flow everywhere of room.
No barrier for air flow.
Ensure enough maintenance space for installation. Otherwise, it will cause difficulties to
maintain the unit in future.
Wall or ceiling shall be strong enough to support indoor units. Otherwise, it may cause the
unit falling off.
Do not expose to sunshine.
Do not install units to the place where steam or oil smoke exists.
Do not install units to the place where burning gas leakage may happen.
Do not install around the high frequency equipment (such as high frequency electric welding
machine).
Do not install units in the place where acid liquid exists.
Do not install units in the place usually using sulfide or other sprayer.
Installation of MCC-T series indoor units
This type indoor units shall couple with duct working of air supply and air return; also can add the
heating coil and heater.
Indoor unit
To check the accessories are ready.
To install the hooker and ensure it strong
enough to support unit.
Install the unit and check it installed horizontally;
ensure the slope of the drainage piping, as
shown in below figure.
Notes:
a. Ensure piping and air duct working are most efficent length and units shall be installed in the middle position
of the room.
b. When installation of the indoor units, to ensure the distance shall be larger than 3m between return air inlet
and heat exchanger.
To install the refrigerant pipe drainage pipe. Specification for the refrigerant pipe and drainage pipe, see the
section technical parameters
damaging the copper tube and its joint.
Do not use the damaged copper tube or dirty copper tube. To avoid long time expose to the air. Only get the
concerned preparation ready, and do not open valves, connector, copper cap and cushion before installation.
To install refrigerant pipe, all models of this series product should be connected with a E-EXV box out of the
machine, as shown in below figure.
Note: The E-EXV box contains electronic expansion valves, which needs to be mounted in proper place on the liquid
piping. When installing the E-EXV box, make sure the box vertical. The E-EXV box and the indoor unit could not
exceed the length-limit of the electric expansion valve cable, as shown in the figure below.
There are some manners to install the E-EXV (the mounting must be fixed and safe, and the direction must be
vertical).
screw joing
indoor
E-EXV box
unit
liquid pipe
gas pipe
Design & installation Guide For McQuay MDS Multi System
of Usage Instruction. Use the torque spanner to install the pipe to avoid
Suspending by steeves
Screw setting on indoor unit
Pole
Nut
Spring pad
Washer
Hook screw hole
Hook
Washer
Nut
Screw
Screw
drain direction
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