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6.7 WIRING
6.7.1 Introduction
Before performing any operation to electrical system, make sure the power
is off
Follow these instructions carefully:
– Check the circuits and components for any damage that may have occurred during transportation.
– Ensure the screws and bushes are all tightly connected.
– Ensure the network voltage and frequency conforms to the data on the unit’s label and wiring diagram.
– Connect the wires in accordance with the wiring diagram.
– Connect the earth to the bar or connection in the control board.
Cable cross-section and line safety devices must conform to specifications
in the wiring diagram
Variation in voltage supply must not exceed ±5% and maximum unbalance between phases must be less than 2%
The manufacturer warranty is forfeited if operation does not conform to the
above
6.7.2 Alarms and external controls
The terminal board in the control board features free contacts for:
– Remote control of critical (first level) alarm and minor (second level) alarm.
– Remote operation mode of compressors and fans (optional).
– Remote control of the unit (switch on/off).
– Remote control of five contacts for signalling statuses or alarms that can be configured as required
(optional alarms sheet).
The above mentioned contacts are numbered on the wiring diagram.
6.7.3 Connection to the remote condensers
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Installation, use and maintenance manual Datatech