Figure 2-10 Installation hole dimensions of Lee-Temp outdoor unit base (top view, unit: mm)
If multiple outdoor units need to be installed with one above the other, see Figure 2-11 to install them.
Bracket
4m
0.5m
50mm
50mm
Min. 50mm
Outdoor unit base
Base
Airflow
Airflow
Out-
door
unit
Out-
door
unit
Note:
1. Use 5# angle iron for bracket, when
two units are installed with one above
the other.
2. Use 6.5# channel steel for bracket, when
three units are installed with one above the
other.
Figure 2-11 Installing multiple outdoor units with one above the other
2.6 Piping for AC Unit
2.6.1 General Principles
1. Use copper pipes with quick thread connector to connect the indoor unit and the outdoor unit. If the pipe length
exceeds the standard pipe length (see Table 2-1) and straight copper pipe is used, piping joints must be brazed.
2. Follow standard industry procedures in selection and placement of pipe, system evacuation and charging with
refrigerant (only when pipeline is too long). The standard refrigerant of the AC unit is R22.
3. Give considerations to pipeline pressure drop, oil return to the compressor, to avoid oil leakage and clogging in
parts of the system and minimize noise and vibration to the greatest extend.
4. Consult Emerson before installation on whether measures such as using extended piping kit are needed, if the
equivalent length exceeds 50m, or if the vertical distance between the indoor unit and the outdoor unit exceeds the
values in Table 2-3.
Table 2-3 Vertical distance between indoor unit and outdoor unit
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