Viessmann 7424689, Инструкция по установке и обслуживанию

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For further information regarding the individual steps, see the page indicated
Commissioning steps
Inspection steps
Maintenance steps Page
• • •
1. Opening the heat pump .................................................. 64
•
2. Writing reports ................................................................ 64
•
3. Flushing the refrigerant lines and the internal unit
with nitrogen (the internal unit is filled with nitrogen;
positive pressure approx. 2 bar)
•
4. Tightness and pressure test with dry nitrogen at
43 bara/4.3 MPa
•
5. Evacuating the refrigerant lines and internal unit ....... 65
•
6. Filling refrigerant lines and the internal unit ................ 68
• • •
7. Checking the refrigerant circuit for leaks ..................... 69
•
8. Filling and venting on the secondary side ................... 70
• • •
9. Checking expansion vessel and heating circuit
pressure ........................................................................... 72
• •
10. Checking electrical connections of the internal unit
for firm seating
• • •
11. Checking that the external unit condensate pan
enables condensate to drain away freely
• • •
12. Checking the free running of the fan in the external
unit ................................................................................... 73
•
13. Cleaning the heat exchanger (evaporator) in the
external unit .................................................................... 73
•
14. Checking the thermal insulation on the swaged
connections
• •
15. Checking the electrical connections of the external
unit for firm seating ........................................................ 74
• • •
16. Closing the heat pump; resetting the circuit breaker/
main fuse
• • •
17. Starting the heat pump ................................................... 74
Commissioning, inspection, maintenance
Steps - commissioning, inspection and maintenance
5601 429 GB