68
For further information regarding the individual steps, see the page indicated
Commissioning steps
Inspection steps
Maintenance steps
Page
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•
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1. Opening the heat pump
.................................................. 70
•
2. Writing reports
................................................................ 70
•
3. Flushing the refrigerant lines and the internal unit
with nitrogen (internal unit is filled with nitrogen;
positive pressure approx. 1 to 2 bar)
•
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
....... 71
•
6. Filling refrigerant lines and the internal unit
................ 73
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•
•
7. Checking the refrigerant circuit for leaks
..................... 75
•
8. Filling and venting on the secondary side
................... 75
•
•
•
9. Checking the expansion vessel and heating circuit
pressure
........................................................................... 78
•
•
10. Checking electrical connections of the internal unit
for firm seating
•
•
•
11. Checking external unit condensate pan for free
drainage
•
•
•
12. Checking the free running of the fan in the external
unit
................................................................................... 78
•
13. Cleaning the external unit heat exchanger
(evaporator)
..................................................................... 78
•
14. Checking thermal insulation of flared connections
•
•
15. Checking electrical connections of the external unit
for firm seating
................................................................ 79
•
•
•
16. Closing the heat pump, switching on main fuse/MCB
•
•
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17. Starting the heat pump
................................................... 79
•
18. Commissioning the system
........................................... 80
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
5604 692 GB
