Vaillant VWZ AI VWL X/2 A West User manual

For the competent person
Installation instructions
Heat pump control module
VWZ AI VWL X/2 A
UK
Installation instructions
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Telefon [phone]‑0 Telefax 021 91 18‑28 10
[email protected] www.vaillant.de

Contents
2Installation instructions Heat pump control module 0020151756_01
Contents
1 Safety .................................................................... 3
1.1 Action-related warnings ......................................... 3
1.2 General safety information .................................... 3
1.3 Regulations (directives, laws, standards) .............. 3
1.4 Intended use .......................................................... 3
2 Notes on the documentation .............................. 4
2.1 Observing other applicable documents ................. 4
2.2 Document storage ................................................. 4
2.3 Applicability of the instructions .............................. 4
3 Product overview................................................. 4
3.1 Overview of functional elements............................ 4
3.2 Connecting the mains connection line to the
eBUS in the system ............................................... 4
3.3 Scope of delivery ................................................... 4
4 Installation............................................................ 4
4.1 Opening the casing................................................ 4
4.2 Installing the product.............................................. 5
4.3 Closing the casing ................................................. 5
4.4 Installing the VR 10 standard sensor..................... 5
4.5 Installing the external temperature sensor ............ 5
5 Electrical installation........................................... 5
5.1 Connecting the product ......................................... 6
6 Start-up ................................................................. 6
6.1 Starting up the product .......................................... 6
7 Customer service................................................. 6
8 Technical data...................................................... 6

Safety 1
0020151756_01 Heat pump control module Installation instructions 3
1 Safety
1.1 Action-related warnings
Classification of action-related warnings
The action-related warnings are classified in accordance
with the severity of the possible danger using the following
warning signs and signal words:
Warning symbols and signal words
Danger!
Imminent danger to life or risk of severe personal
injury
Danger!
Risk of death from electric shock
Warning.
Risk of minor personal injury
Caution.
Risk of material or environmental damage
1.2 General safety information
1.2.1 Installation by competent persons only
The product must be installed by a qualified competent per-
son who is responsible for compliance with the applicable
requirements, regulations and directives.
▶Read through these installation instructions carefully.
▶Carry out the activities that are described in these install-
ation instructions.
▶During the installation, observe the following safety in-
structions and regulations.
1.2.2 Material damage due to unsuitable
installation room
If you are installing the product in a moist environment, the
electronics may be damaged by moisture.
▶Only install the product in dry rooms.
1.2.3 Danger due to error functions
▶Ensure that the heating system is in a technically perfect
condition.
▶Ensure that no safety or monitoring devices have been
removed, bridged or disabled.
▶Immediately rectify any faults and damage that may af-
fect safety.
▶At lengths of over 10 m, 230 V supply lines must be laid
separately from sensor or bus lines.
▶Secure all supply lines in the casing using the cable ter-
minals.
▶Do not use the unit's free terminals as supports for other
wiring.
1.3 Regulations (directives, laws, standards)
1.3.1 Requirements for lines
▶Use standard commercial lines for the wiring.
▶Use sheathed cables for 230 V lines (e.g. NYM 3 x 1.5).
▶Do not use any flexible cables for 230 V lines.
Type of line Min. cross-
section
Cross-section of 230 V supply line (pump or
mixer mains cable)
≥1.5 mm²
Cross-section of eBUS line (extra-low
voltage)
≥0.75 mm²
Cross-section of sensor line (extra-low
voltage)
≥0.75 mm²
Type of line Max. length
Sensor lines ≤50 m
Bus lines ≤300 m
1.3.2 Regulations (directives, laws, standards)
All wiring must be in accordance with Building Regulations
Part P and BS 7671 (IEE Wiring Regulations), and must be
carried out by a suitably qualified person.
1.3.3 CE label
The CE label shows that the products comply with the basic
requirements of all applicable directives as stated on the
identification plate.
The declaration of conformity can be viewed at the manufac-
turer's site.
1.4 Intended use
In the event of inappropriate or improper use, damage to the
product and other property may arise.
This product is a system component which is used with the
VRC 470 controller as of version /3 to control heating circuits
and the hot water supply in conjunction with a heat pump.
Intended use includes the following:
–observing the included operating, installation and servi-
cing instructions for the Vaillant product and any other
system components
–compliance with all inspection and maintenance condi-
tions listed in the instructions.
This product can be used by children over eight years old
and also by persons with limited physical, sensory or mental
capabilities or insufficient experience and/or knowledge if
they are supervised or have been provided with instructions
on how to safely use the product, and they understand the
risks resulting from using the product. Children must not play
with the product. Cleaning and user maintenance work must
not be carried out by children unless they are supervised.
Any other use that is not specified in these instructions, or
use beyond that specified in this document shall be con-
sidered improper use. Any direct commercial or industrial
use is also deemed to be improper.
Caution.
Improper use of any kind is prohibited.

2 Notes on the documentation
4Installation instructions Heat pump control module 0020151756_01
2 Notes on the documentation
2.1 Observing other applicable documents
▶You must observe all the operating and installation in-
structions included with the system components.
2.2 Document storage
▶Pass these instructions and all other applicable docu-
ments and, if necessary, any required tools to the system
operator.
2.3 Applicability of the instructions
These instructions apply to products with the following article
numbers only:
Product Article number
VWZ AI VWL X/2 A West 0020117049
VWZ AI VWL X/2 A East 0020139944
3 Product overview
3.1 Overview of functional elements
1
2
3
1 LED
2 Diagnostic socket (for later
use)
3 Identification plate
3.2 Connecting the mains connection line to
the eBUS in the system
Connection diagram
230 V~
2
1
4
5
3
1 Heat pump
2 Controller
3 VWZ AI VWL X/2 A
4 230 V mains connection
line (on-site)
5 eBUS line
The product is connected to the power supply on-site. You
can branch the eBUS connection to the product at any part
of the eBUS system.
3.3 Scope of delivery
Quant-
ity
Description
1 VWZ AI VWL X/2 A
2 VR 10 standard sensor
1 Installation accessories (bolts and rawl plugs)
1 Installation instructions
4 Installation
4.1 Opening the casing
1. 2.
1. Unscrew the bolt from the underside of the casing.
2. Pull the casing cover slightly forwards at the lower
edge.
3. Lift the casing cover upwards.

Electrical installation 5
0020151756_01 Heat pump control module Installation instructions 5
4.2 Installing the product
PE N L
230 V~
+ -
Bus VF1 SP1
PE N L
230 V~
AF DCF
DCF/AF ME EVU
PE N L
MA1
PE N L
MA2
PE N Auf Zu
UV1
PE N 1 2
ZH
2 1 2 1 2 1 2 1
1
1. Mount the product and the supplied installation access-
ory on the wall. Use the fixing points (1) for this.
2. Connect the product. (→Page 6)
4.3 Closing the casing
1. Insert the casing cover at the top into the hinges.
2. Fold down the casing cover.
3. Screw the bolt into the underside of the casing.
4.4 Installing the VR 10 standard sensor
Note
You can use the VR 10 as a cylinder temperature
sensor (for example, as an immersion sensor
in a cylinder dry pocket), as a flow temperature
sensor (for example, in the low loss header) or
as a surface mount sensor. We recommend that
the pipe with the sensor be insulated to ensure
optimum temperature recording.
▶If you use the VR 10 as a surface mount sensor, secure
the VR 10 to a return/flow pipe using the enclosed strap.
4.5 Installing the external temperature sensor
Installing the external temperature sensor
1
AF DCF
DCF/AF
2
1 Connection cable to the
VRC 693 external temper-
ature sensor
2 Connector in the product
▶Install the external temperature sensor in accordance
with its enclosed installation manual.
5 Electrical installation
Danger!
Risk of death from live connections!
There is a risk of death from electric shock
when working on the open product and in the
electronics box of the heat pump.
▶Before working on the product and in the
heat pump's electronics box, switch off the
power supply.
▶Secure the power supply against being
switched on again.
Danger!
Risk of damage caused by incorrect in-
stallation.
Connecting wires that have been stripped
too far may cause short circuits and damage
the electronics if a strand accidentally comes
loose.
▶Only strip the outer sheathing of flexible
cables to a maximum of 2.5 cm to prevent
short circuits.
▶Lay the lines correctly.
▶Use strain reliefs.

6 Start-up
6Installation instructions Heat pump control module 0020151756_01
5.1 Connecting the product
Note
The mains connection cable and the eBUS line
are not included in the scope of delivery.
2 1
SP1
2 1
VF1 EVU
2 1
ME
2 1
+ -
Bus
PE N 1 2
ZH
PE N Auf Zu
UV1
AF DCF
DCF/AF
PE N L
MA2
PE N L
MA1
PE N L
230 V~
PE N L
230 V~
1234 5 6 7891011
230 V~ 3,3 V / 5 V / 24 V
12
1 Mains connection
2 Mains connection (altern-
ative)
3 Multi-function output 1
4 Multi-function output 2
5 Diverter valve
6 Auxiliary boiler
7 VRC 470 controller
8 Flow temperature sensor
9 Cylinder temperature
sensor
10 DCF receiver with external
temperature sensor
11 Multi-function input
12 EVU contact
1. Connect the product using a fixed connection and a
partition with a contact opening of at least 3 mm (e.g.
fuses or power switches).
2. Wire the product in accordance with the illustration.
Note
If the diverter valve should be in the position
for cylinder charging, 230 V is output to the
"Open" contact. If the diverter valve should
not be in the position for cylinder charging,
230 V is output to the "Closed" contact.
Note
The EVU contact is used to connect a block-
ing signal (can be configured on the control-
ler).
Contact open: Operation permitted
Contact closed: Operation blocked
3. Secure all lines in the product using the enclosed strain
reliefs.
4. Close the casing. (→Page 5)
6 Start-up
6.1 Starting up the product
1. Ensure that the casing is closed when starting up the
product.
2. Start up the product together with the controller (→In-
stallation instructions for the controller).
7 Customer service
To ensure regular servicing, it is strongly recommended
that arrangements are made for a Maintenance Agreement.
Please contact Vaillant Service Solutions (0870 6060 777)
for further details.
8 Technical data
VWZ AI VWL X/2 A
Operating voltage Umax 230 V
Power consumption ≤2 V⋅A
Contact loading of the output relay ≤2 A
Total current ≤4 A
Sensor operating voltage 3.3 V
Cross-section of eBUS line (extra-low
voltage)
≥0.75 mm²
Cross-section of sensor line (extra-
low voltage)
≥0.75 mm²
Cross-section of 230 V supply line
(pump or mixer mains cable)
≥1.5 mm²
Level of protection IP 20
Protection class II
Maximum ambient temperature 40 ℃
Height 174 mm
Width 272 mm
Depth 52 mm

0020151756_01 30.04.2013
Vaillant Ltd
Nottingham Road Belper Derbyshire DE56 1JT
Telephone [phone] Vaillant Service Solutions 080 70 606 07 77
[email protected] www.vaillant.co.uk
© Vaillant GmbH 2013
These instructions, or parts thereof, are protected by copyright and may be reproduced or distributed only with
the manufacturer's written consent.
*2703479_rev.1*