6 Start-up
6.1 General description
The indicated operations should be done by qualied technician with specic training on the product.
The electrical, water connections and the other system works are by the installer.
Upon request, the service centres performing the start-up.
Agree upon in advance the star-up data with the service centre.
For details refer to the dierent manual sections.
Before checking, please verify the following:
•
the unit should be installed properly and in conformity with this manual
•
the electrical power supply line should be isolated at the beginning
•
the unit isolator is open, locked and equipped with the suitable warning
•
make sure no tension is present
After turning o the power, wait at least 5 minutes before accessing to the electrical panel or any other electrical component.
Before accessing check with a multimeter that there are no residual stresses.
6.2 Preliminary checks
Unit OFF power supply
1. safety access
2. functional spaces
3. structure integrity
4. unit on vibration isolators
5. unit input water lter + shut-o valves for cleaning
6. vibration isolators on water connections
7. expansion tank (indicative volume = 5% system content)
8. minimum system water content
9. cleaned system
10. loaded system + possible glycol solution + corrosion inhibitor
11. system under pressure
12. vented system
13. refrigerant circuit visual check
14. earthing connection
15. power supply features
16. electrical connections provided by the customer
6.3 Start-up sequence
Unit ON power supply
1. compressor crankcase heaters operating at least since 8 hours
2. o-load voltage measure
3. phase sequence check
4. pump manual start-up and ow check
5. shut-o valve refrigerant circuit open
6. unit ON
7. load voltage measure and absorptions
8. liquid sight glass check (no bubbles)
9. measure return and supply water temperature
10. measure super-heating and sub-cooling
11. check no anomalous vibrations are present
12. climatic curve personalization
13. climatic curve personalization
14. scheduling personalization
15. complete and available unit documentation
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