21
6 - START-UP
PRELIMINARY CHECKS
To check before starting-up the unit .
For details refer to the different manual sections.
√
Preliminary checks - Unit OFF power supply
Access in safety
Functional clearances
Air flow : free return and supply (no bypass, no stratification)
Structure integrity
Fans run freely
Unit on vibration isolators
Unit input water filter + shut-off valves for cleaning
Vibration isolators on water connections
Expansion tank (indicative volume = 5% system content)
Cleaned system
Loaded system + possibile glicole solution + corrosion inhibitor
Under pressure system
Vented system
Refrigerant circuit visual check
Earthing connection
Power supply features
Electrical connections provided by the customer
Ext. auxiliary heater connections (if present)
External 3-way valve connection (if present)
External pump connection (if present)
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