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LG
Air-Cooled Cooling Only Inverter Scroll Chiller Installation and Owners Manual
ELECTRICAL
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If the power adapter power cord and the HMI power wiring must be installed together, it is necessary to separate the power cable to the HMI from the
communication cable to the HMI to avoid communication problems from electrical interference.
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Installing the HMI Indoors
• The HMI can be installed on an interior wall. See below for instructions. Use a drill to add pilot holes
before installing the screws.
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grounded to the chiller chassis only.
Do not ground the communication cable at any other point.
1. Choose the location in which to install the HMI. Verify that it is an appropriate location to connect the
communication cable and power wiring to the HMI, and that its distance from the chiller falls below
maximum wiring / cable length requirements.
2. Use the drier and the M4 screw on the top wall of the communication cable to attach the back panel
of the HMI. See diagram at right. It can be attached as shown, depending on the installation loca-
tion.
3. Pull the communication cable through the hole on the back of the panel.
4. Connect the cable to the communication port located on the back of the HMI.
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do not
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to the compressors and other components.
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so will result in a communication malfunction.
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Figure 107: Attaching the Back
Panel of the HMI to the Wall.
Figure 108: Pulling the Communi-
cation Cable Through the Back of
the Panel.
WARNING
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death.
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5. Connect the factory-supplied power adapter
to the power terminal
located on the back of the HMI.
6. Assemble the main body of the HMI to the wall panel. Position
the hole at the top of the main HMI unit on the top of the back
panel. Push the bottom of the HMI to the back panel to lock into
place.
7. Plug in the power adapter to the HMI and the power supply.
Figure 109: HMI Terminal.
Figure 110: HMI Terminal.
