McQuay MDS030A Manual page 41

air return grill
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:
•
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 electric 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).
Installation mode 1: Rod mounting
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:
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 a must and shall be 1/100, try to drain in a positive slope.
b. To fix the drain piping to use screw bolt.
c. After installation, to run the water leakage test is a must.
d. Only in cooling mode, there is a need to detect the status of drainage.
Pole
Nut
Spring pad
Hook screw hole
Washer
Nut
Wall
Wall
Refrigerant pipe & drainage
(come from the top panel)
page 40
screw joint
indoor
E-EXV box
unit
liquid pipe
gas pipe
Installation mode 2: Mounting on the wall
Washer
Hook
wall
wall
refrigerant pipe & drain pipe
(come out from top panel)
Fix with screw
Wall
Refrigerant pipe & drainage
(come from the rear panel)