Vaillant VWL 57/5 IS Operating, Installation And Maintenance Instructions page 16

Contents
Installation and maintenance
instructions
Contents
1 Safety .................................................................. 16
1.1 Action-related warnings ....................................... 16
1.2 Intended use ........................................................ 16
1.3 General safety information .................................. 16
1.4 Regulations (directives, laws, standards) ............ 18
1.5 Benchmark........................................................... 18
2 Notes on the documentation ............................ 19
2.1 Observing other applicable documents ............... 19
2.2 Storing documents............................................... 19
2.3 Validity of the instructions .................................... 19
2.4 Further information .............................................. 19
3 Product description........................................... 19
3.1 Heat pump system............................................... 19
3.2 Safety devices ..................................................... 19
3.3 Cooling mode....................................................... 20
3.4 Functions of the heat pump ................................. 20
3.5 Description of the product.................................... 20
3.6 Product overview ................................................. 20
3.7 Service valve ....................................................... 21
3.8 Information on the data plate ............................... 21
3.9 Connection symbols ............................................ 22
3.10 CE marking .......................................................... 22
3.11 Application limits .................................................. 22
3.12 Buffer cylinder...................................................... 23
4 Set-up.................................................................. 23
4.1 Unpacking the product......................................... 23
4.2 Checking the scope of delivery............................ 23
4.3 Selecting the installation site ............................... 23
4.4 Dimensions .......................................................... 24
4.5 Minimum clearances and installation
clearances ........................................................... 24
4.6 Wall-mounting the product................................... 24
4.7 Removing the front casing ................................... 25
4.8 Removing the bottom casing ............................... 25
5 Hydraulics installation ...................................... 26
5.1 Carrying out the installation preparations ............ 26
5.2 Routing refrigerant pipes ..................................... 26
5.3 Connecting the refrigerant pipes ......................... 26
5.4 Checking the refrigerant pipes for tightness ........ 27
5.5 Installing the heating flow and heating return
for the domestic hot water cylinder ...................... 27
5.6 Installing the heating circuit connections ............. 27
5.7 Installing a drain on the expansion relief valve .... 27
6 Electrical installation......................................... 27
6.1 Preparing the electrical installation...................... 27
6.2 Opening the power supply PCB's electronics
box ....................................................................... 28
6.3 Establishing the power supply ............................. 28
14
6.4 Installing components for the energy supply
company lockout function .................................... 30
6.5 Limiting the power consumption .......................... 30
6.6 Menu functions without the optional system
control .................................................................. 30
6.7 Installing the system control in the electronics
box ....................................................................... 31
6.8 Opening the electronics box ................................ 31
6.9 Cable route .......................................................... 31
6.10 Connecting a limit thermostat for the
underfloor heating................................................ 31
6.11 Carrying out the wiring......................................... 32
6.12 Connecting the circulation pump ......................... 32
6.13 Actuating a circulation pump with an eBUS
controller .............................................................. 32
6.14 Connecting the domestic hot water cylinder........ 33
6.15 Connecting the external prioritising diverter
valve (optional) .................................................... 33
6.16 Using the additional relays .................................. 33
6.17 Connecting cascades .......................................... 33
6.18 Sealing the power supply PCB ............................ 33
6.19 Checking the electrical installation ...................... 33
7 Start-up ............................................................... 33
7.1 Activating screed drying without the outdoor
unit and system control........................................ 33
7.2 Setting the prioritising diverter valve.................... 34
7.3 Checking and treating the heating water/filling
and supplementary water .................................... 34
7.4 Filling and purging the heating installation .......... 35
7.5 Purging ................................................................ 36
7.6 Starting up the product ........................................ 36
7.7 Running the installation assistants ...................... 36
7.8 Energy balance control ........................................ 36
7.9 Compressor hysteresis ........................................ 37
7.10 Enabling the electric back-up heater ................... 37
7.11 Setting the anti-legionella function....................... 37
7.12 Purging ................................................................ 37
7.13 Calling up the installer level ................................. 37
7.14 Restarting the installation assistants ................... 37
7.15 Calling up statistics .............................................. 37
7.16 Using check programmes .................................... 37
7.17 Carrying out the actuator test .............................. 37
7.18 Starting up the optional system control ............... 37
7.19 Display of the filling pressure in the heat pump
circuit ................................................................... 38
7.20 Preventing low water pressure in the heating
circuit ................................................................... 38
7.21 Checking function and leak-tightness.................. 38
8 Operation............................................................ 38
8.1 Operating concept of the product ........................ 38
Installation and maintenance instructions Hydraulic station 0020257319_02