4
Before Using this unit
Requirements for Installation
WARNING!
1. Always ground this unit
• The DP23C/33C type use a single-phase 115V, DP43C/63C types use a single-phase 220V
power source. Please consult your local electrical contractor for power connecting work.
• Be sure to connect the earth wire (the green cable of power cord) to the grounding conductor
or ground terminal to prevent accidents caused by electric leakage.
• Do not connect the earth wire to gas or water pipes. If not, fire disaster may be caused.
• Do not connect the earth wire to the ground for telephone wire or lightning conductor. If not,
fire disaster or electric shock may be caused.
• Do not use a branching receptacle, which may cause the heat generation.
2. Choose a proper place for installation
• Do not install this unit in a place where:
♦ Rough or dirty surface.
♦ Flammable gas or corrosive gas is generated.
♦ Ambient temperature exceeds 35°C.
♦ Ambient temperature fluctuates violently.
♦ There is direct sunlight.
♦ There is excessive humidity and dust.
♦ There is a constant vibration.
• Install this unit on a stable place with the space as shown below.
The exhausted opening is provided at the back surface of unit for DP23C/33C/43C/63C types.
Main Unit
More than
15cm
More than
15cm
More than 30cm
Front side
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