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Design & installation Guide For McQuay MDS Multi System
2. To fix the suspending panel with screw bolt as shown as above right figure.
3. To hang the unit to the suspending panel and fix screw bolts, after installation of refrigerant pipe
and drainage pipe, install the return air grill and frame, as shown below left figure: return air grill
indoor
unit
E-EXV box
liquid pipe
gas pipe
flare joint
Installation mode 1: Rod mounting
Pole
Nut
Spring pad
Hook screw hole
Washer
Nut
Washer
Hook
Installation mode 2: Mounting on the wall
Fix with screw
Wall
(come from the top panel)
Refrigerant pipe & drainage
Wall
Refrigerant pipe & drainage
(come from the rear panel)
Wall
3. To install the refrigerant and drainage piping as shown above right figure;
4. To install the electrical expansion valve as same as the horizontal installation;
Installation of drain piping
a. Slope is required as 1/100, and try to drain in a positive slope.
b. To use suspending bolt to fix the long drainage piping.
c. After installation, to run the leakage test is necessary to ensure it works.
d. Only in cooling mode, there is a need to detect the status of drainage.
Vertical floor standing
1. To remove the air return grill, frame, side panel and suspending panel as shown below:
2. To install the unit supporter and wall suspending panel, as shown below left figure:
Install the E-EXV box: All models of this series product need connect a E-EXV box to finish
the piping installation, as shown on right figure:
Notes:
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 above right figure.
There are some manners to install the E-EXV box (the mounting must be fixed and safe, and
the direction must be vertical).
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