*****INTERNAL*****30 R_D proof- 26.10.2022 / 09:15:46- VaillantGroup\DOC-agt\Brand\VIH_QW_190_6\ENG\OI-II_GB_0020291525
70 Installation and maintenance instructions 0020291525_04
Index
A
Actuator test ........................................................................ 42
Actuators, checking ............................................................. 42
Article number ..................................................................... 20
B
Basic diagram...................................................................... 17
Building circuit, connecting.................................................. 28
C
Cable duct, in the product ................................................... 33
Calling up, code layer.......................................................... 40
Calling up, installer level...................................................... 40
Calling up, statistics............................................................. 40
Carrying straps .............................................................. 24, 28
CE marking.......................................................................... 21
Check programmes ............................................................. 43
Checking, electrical installation ........................................... 37
Checking, maintenance message ....................................... 43
Checking, service message ................................................ 43
Circulation pump, connecting.............................................. 36
Code layer, calling up.......................................................... 40
Cold water connection......................................................... 28
Comfort protection mode..................................................... 43
Competent person............................................................... 17
Component test ................................................................... 42
Condensate discharge, connecting..................................... 32
D
Data plate ............................................................................ 20
Decommissioning................................................................ 44
Displaying, Live Monitor ...................................................... 42
Displaying, status codes...................................................... 42
Disposal, accessories.......................................................... 44
Disposal, packaging ............................................................ 44
Disposal, product................................................................. 44
Domestic hot water connection ........................................... 28
Drain pipe ............................................................................ 30
E
Electric back-up heater, enabling........................................ 39
Electric back-up heater, maximum output........................... 39
Electrical installation, checking............................................ 37
Electricity ............................................................................. 17
Energy supply company lockout.......................................... 32
F
Factory settings, restoring ................................................... 43
Fault codes.......................................................................... 42
Fault memory ...................................................................... 42
Fault symbol ........................................................................ 43
Filling and purging............................................................... 38
Filling pressure, displaying .................................................. 40
Front casing, installing......................................................... 26
Front casing, removing........................................................ 25
Frost .................................................................................... 18
Frost protection function...................................................... 19
Function menu..................................................................... 42
H
Heating circuit, connecting .................................................. 28
Hot water temperature
Risk of scalding.............................................................. 17
I
Inspection work ................................................................... 43
Installation assistant ............................................................ 39
Installation clearances......................................................... 23
Installer level, calling up ...................................................... 40
Intended use........................................................................ 17
L
Live Monitor, displaying....................................................... 42
Low-water pressure protection............................................ 19
M
Maintenance message, checking........................................ 43
Maintenance work ............................................................... 43
Minimum clearances ........................................................... 23
O
Operating concept ............................................................... 37
P
Parameters, resetting .......................................................... 43
Power supply....................................................................... 33
Pre-charge pressure of expansion vessel........................... 43
Product, separating ............................................................. 24
Product, separating into two modules ................................. 24
Product, switching on .......................................................... 39
Q
Qualification......................................................................... 17
R
Regulations ......................................................................... 18
Reset ................................................................................... 42
S
Safety assembly .................................................................. 29
Safety cut-out ...................................................................... 19
Safety device....................................................................... 17
Screed drying, function........................................................ 40
Self-test ............................................................................... 42
Sensor test .......................................................................... 42
Serial number ...................................................................... 20
Service message, checking................................................. 43
Service partner .................................................................... 42
Spare parts.......................................................................... 43
Statistics, calling up............................................................. 40
Status codes, displaying...................................................... 42
Switching on, product .......................................................... 39
T
Test menu ........................................................................... 42
Tool ..................................................................................... 18
Transport ............................................................................. 17
Treating the heating water................................................... 37
U
Unit configuration, checking ................................................ 40
V
Voltage ................................................................................ 17
W
Wiring .................................................................................. 36
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