56
For further information regarding the individual steps, see the page indicated
Commissioning steps
Inspection steps
Maintenance steps
Page
•
•
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1. Opening the heat pump
.................................................. 58
•
2. Compiling reports
........................................................... 58
•
3. Purging the refrigerant lines and the internal unit with
nitrogen (internal unit is filled with nitrogen; positive
pressure 1 to 2 bar/0.1 to 0.2 MPa)
•
4. Check tightness and pressure with dry nitrogen with
at least 20 bara/2.0 MPa (max. 43 bara/4.3 MPa)
•
5. Evacuating the refrigerant lines and internal unit
....... 59
•
6. Filling the refrigerant lines and internal unit
................ 61
•
•
•
7. Checking the refrigerant circuit for leaks
..................... 63
•
8. Filling and venting on the secondary side
................... 63
•
•
•
9. Checking expansion vessel and heating circuit
pressure
........................................................................... 66
•
•
10. Checking electrical connections of the internal unit
for firm seating
•
•
•
11. Checking that condensate can drain away freely from
the external unit condensate pan
•
•
•
12. Checking the free running of the fan in the external
unit
................................................................................... 66
•
13. Cleaning the external unit heat exchanger
(evaporator)
..................................................................... 66
•
14. Checking thermal insulation of flared connections
•
•
15. Checking electrical connections of the external unit
for firm seating
................................................................ 67
•
•
•
16. Closing the heat pump; resetting the circuit breaker/
main fuse
•
•
•
17. Starting the heat pump
................................................... 67
•
18. Commissioning the system
........................................... 68
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
5782 176 GB
