Viessmann AWS 104, Installation And Service Instructions For Contractors

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66
For further information regarding the individual steps, see the page indicated
Commissioning steps
Inspection steps
Maintenance steps Page
• • •
1. Opening the heat pump .................................................. 68
•
2. Writing reports ................................................................ 68
•
3. Flushing the refrigerant lines and the internal unit
with nitrogen (the internal unit is filled with nitrogen;
operating pressure approx. 1 bar)
•
4. Tightness and pressure test with dry nitrogen at
43 bara/4.3 MPa
•
5. Evacuating the refrigerant lines and internal unit ....... 69
•
6. Filling the refrigerant lines and internal unit ................ 71
• • •
7. Checking the refrigerant circuit for leaks ..................... 73
•
8. Filling and venting on the secondary side ................... 73
• • •
9. Checking expansion vessel and heating circuit
pressure ........................................................................... 76
• •
10. Checking electrical connections of the internal unit
for firm seating
• • •
11. Checking the condensate connection to the external
unit ................................................................................... 77
• • •
12. Checking the free running of the fan in the external
unit ................................................................................... 77
•
13. Cleaning the heat exchanger in the external unit ........ 77
•
14. Checking the thermal insulation on the swaged joints
• •
15. Checking electrical connections of the external unit
for firm seating
• • •
16. Closing the heat pump; resetting the circuit breaker/
main fuse
•
17. Commissioning the system ........................................... 78
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
5724 152 GB