Ariston NIMBUS EXTERNAL UNIT 04 kW Technical Instructions For Installation And Maintenance page 40

CONTENTS
OVERVIEW
Safety regulations ............................................................................................. 41
Terms of guarantee .......................................................................................... 44
System description .......................................................................................... 45
Operating principle ........................................................................................... 45
Diagrams .............................................................................................................. 46
Dimensions and weight .................................................................................. 47
Global view.......................................................................................................... 48
Thermodynamic performance of external unit ...................................... 49
External unit technical data ........................................................................... 49
Remote control devices .................................................................................. 51
INSTALLATION GUIDE
Before installing the appliance...................................................................... 52
External unit placement ................................................................................. 52
Minimum installation distances .................................................................... 52
Routing the cables ............................................................................................ 53
Removing the front panel .............................................................................. 53
Positioning the condensation drain hoses ................................................ 53
Connecting the 3 bar safety valve ............................................................. 53
Hybrid module preliminary installation ...................................................... 54
Minimum installation distances .................................................................... 54
Removing the front panel .............................................................................. 54
Connecting to the boiler ................................................................................ 54
Checks .................................................................................................................. 55
WATER PIPE FITTINGS
Hybrid module ................................................................................................... 55
ELECTRICAL CONNECTIONS
Electrical circuit ................................................................................................. 56
Table ...................................................................................................................... 56
External unit electrical connections ........................................................... 57
Hybrid module electrical connections ....................................................... 58
Wiring diagram .................................................................................................. 59
40 /
PREPARING THE BOILER FOR OPERATION
Installing the system interface fi rmware .................................................. 60
System interface display symbols: ............................................................. 61
LED signal ............................................................................................................ 61
Parameter adjustment .................................................................................... 62
Temperature adjustment................................................................................ 65
REGULATIONS
Menu table .......................................................................................................... 66
MAINTENANCE
General remarks ................................................................................................ 73
Operation test.................................................................................................... 73
Anti-freeze function ........................................................................................ 73
User information ............................................................................................... 73
Table of error codes ......................................................................................... 74
Data plate ............................................................................................................ 75