Vaillant geoTHERM Installation Instructions Manual page 3

7.7 Installing optional accessories ................................... 60
7.7.1 Installing VR 90 ............................................................. 60
7.7.2 Installing VR 60 ...............................................................61
7.8 Connecting an external boiler .....................................61
7.8.1 Connecting an external boiler with eBUS
interface ...........................................................................61
7.8.2 Connecting an external boiler without eBUS
interface ..........................................................................62
7.9 Fitting the cladding and the operating panel .........62
7.10 Installing vrnetDIALOG 840/2 and 860/2 .............. 65
8 Start-up .......................................................................... 66
8.1 Carrying out the initial commissioning ................... 66
8.1.1 Selecting a hydraulic scheme .....................................67
8.1.2 Selecting the electric wiring diagram .......................67
8.1.3 Implementing the settings ...........................................67
8.1.4 Checking and bleeding the brine circuit
(VWS only) .......................................................................67
8.1.5 Checking and bleeding the heating circuit ............. 68
8.1.6 Bleeding the DHW tank, if required .......................... 68
8.2 Handing the heating installation over to the
operator........................................................................... 68
9 Adapting the appliance to the heating system 69
9.1 Operating modes and functions ................................ 69
9.2 Automatic functions ..................................................... 69
9.3 Settable functions ...........................................................71
9.3.1 Settable functions at operator level ..........................71
9.3.2 Settable functions at code level ..................................71
9.3.3 Additional functions via vrDIALOG ............................72
9.4 Control principle .............................................................72
9.4.1 Possible heater system circuits ..................................72
9.4.2 Energy balance control
(hydraulics diagram 1 or 3) ..........................................73
9.4.3 Flow target temperature control
(hydraulics diagram 2, 4 or 10) ...................................73
9.5 Controller structure.......................................................73
9.6 Resetting to factory settings ...................................... 74
9.7 Calling up Code level menus .......................................75
9.7.1 Menu C: Set parameters for the heating system ...76
9.7.2 Menu D: Carrying out diagnoses ............................... 83
9.7.3 Menu I: Display general information ........................ 86
9.7.4 Menu A: Calling up Installation Assistent ............... 88
9.8 Parameters which can only be set with
vrDIALOG .........................................................................93
10 Inspection and maintenance ................................... 96
10.1 Notes on inspection and maintenance .................... 96
10.2 Carrying out the inspection ....................................... 96
10.3 Carrying out the maintenance work ........................ 96
10.4 Carrying out a restart and trial operation ...............97
11 Fault diagnosis and rectification ............................97
11.1 Fault types .......................................................................97
11.2 Faults in eBUS components ........................................ 98
11.3 Faults with temporary warning ................................ 98
Installation instructions geoTHERM 0020051574_04
11.4 Fault with temporary switch-off ................................ 99
11.5 Fault with permanent switch-off .............................. 102
11.6 Other errors/malfunctions ......................................... 107
12 Recycling and disposal .............................................108
12.1 Disposing of the heat pump ......................................108
12.2 Disposing of the packaging .......................................108
12.3 Disposing of brine fluid (VWS only) .........................108
12.4 Arranging disposal of coolant ...................................108
13 Customer service and guarantee ..........................109
13.1 Vaillant warranty ..........................................................109
13.2 Vaillant Service .............................................................109
14 Technical data .............................................................. 110
14.1 Technical Data VWS...................................................... 110
14.2 Technical Data VWW .................................................... 113
15 Commissioning report ............................................... 115
16 Reference ....................................................................... 117
17 Appendix ....................................................................... 120
Index ......................................................................................... 128
Ground source heat pump commissioning checklist ..... 130
Service record ...............................................................................131
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