Vaillant aroTHERM VWL 55/2 A User manual

Operating instructions
aroTHERM
VWL ../2 A 230 V; VWL ../2 A 400 V
CHit, IT
Publisher/manufacturer
Vaillant GmbH
Berghauser Str. 40 D-42859 Remscheid
Tel. [phone]‑0 Fax [phone]‑2810
[email protected] www.vaillant.de

Contents
2Operating instructions aroTHERM 0020172515_05
Contents
1 Safety ............................................ 3
1.1 Action-related warnings ................. 3
1.2 Intended use .................................. 3
1.3 General safety information............. 4
2 Notes on the documentation ...... 8
2.1 Observing other applicable
documents ..................................... 8
2.2 Storing documents......................... 8
2.3 Validity of the instructions .............. 8
3 Product description..................... 9
3.1 Design of the heat pump
system ........................................... 9
3.2 Type designation and serial
number......................................... 10
3.3 Overview of the operator control
elements of the VWZ AI heat
pump control module ................... 10
3.4 Digital Information and Analysis
System (DIA) ............................... 10
3.5 CE label ....................................... 11
4 Operation.................................... 11
4.1 Operating concept ....................... 11
4.2 Basic display................................ 12
4.3 Operating levels........................... 12
4.4 Design of the menu...................... 12
4.5 Live Monitor (status codes).......... 13
4.6 Displaying the building circuit
pressure....................................... 13
4.7 Reading the operating
statistics ....................................... 13
4.8 Displaying contact data................ 13
4.9 Displaying the serial number
and article number ....................... 13
4.10 Setting the display contrast.......... 13
4.11 Setting the language.................... 13
4.12 Switching the product on/off ........ 13
4.13 Operating noises.......................... 14
4.14 Activating frost protection ............ 14
4.15 Setting the target feed
temperature in heating mode....... 14
4.16 Setting a room thermostat or
weather compensator .................. 14
4.17 Checks and maintenance
carried out by the operator........... 14
5 Troubleshooting ........................ 16
5.1 Detecting and rectifying faults...... 16
5.2 Reading the fault message .......... 17
5.3 Troubleshooting ........................... 17
6 Care and maintenance .............. 17
6.1 Maintenance ................................ 17
6.2 Caring for the product .................. 17
7 Decommissioning...................... 17
7.1 Having the product temporarily
decommissioned.......................... 17
7.2 Having the product permanently
decommissioned.......................... 18
8 Recycling and disposal............. 18
8.1 Arranging disposal of coolant ...... 18
9 Guarantee and customer
service ........................................ 18
9.1 Guarantee.................................... 18
9.2 Customer service......................... 20

Safety 1
0020172515_05 aroTHERM Operating instructions 3
1 Safety
1.1 Action-related warnings
Classification of action-re-
lated warnings
The action-related warnings
are classified in accordance
with the severity of the pos-
sible 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 envir-
onmental damage
1.2 Intended use
There is a risk of injury or death
to the user or others, or of dam-
age to the product and other
property in the event of im-
proper use or use for which it
is not intended.
The product is intended for use
as a heat generator in closed
central heating installations.
Operation of the pump outside
the application limits results in
the heat pump being switched
off by the internal control and
safety devices.
Intended use includes the fol-
lowing:
–observance of the operating
instructions included for the
product and any other system
components
–compliance with all inspection
and maintenance conditions
listed in the instructions.
This product can be used by
children aged from 8 years
and above and persons with
reduced physical, sensory or
mental capabilities or lack of
experience and knowledge if
they have been given supervi-
sion or instruction concerning
use of the product in a safe way
and understand the hazards in-
volved. 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 spe-
cified in these instructions, or
use beyond that specified in this
document, shall be considered
improper use. Any direct com-
mercial or industrial use is also
deemed to be improper.

1 Safety
4Operating instructions aroTHERM 0020172515_05
Caution.
Improper use of any kind is
prohibited.
1.3 General safety
information
1.3.1 Danger caused by
improper operation
Improper operation may present
a danger to you and others, and
cause material damage.
▶Carefully read the enclosed
instructions and all other ap-
plicable documents, particu-
larly the "Safety" section and
the warnings.
▶Only carry out the activities
for which instructions are
provided in these operating
instructions.
1.3.2 Risk of death due
to explosions and
scaldings from brine
fluid
The brine fluid ethylene and
propylene glycol is extremely
flammable, both as liquid and
steam. A potentially explosive
combination of steam/air may
form.
▶Keep away from heat, sparks,
naked flames and hot sur-
faces.
▶Prevent steam/air mixtures
from forming. Keep brine fluid
vessels closed.
▶Observe the safety data sheet
that accompanies the brine
fluid.
1.3.3 Risk of death due to lack
of safety devices
The schematic drawings in-
cluded in this document do not
show all safety devices required
for correct installation.
▶Install the necessary safety
devices in the system.
▶Observe the applicable na-
tional and international laws,
standards and guidelines.
1.3.4 Risk of chemical burns
caused by brine fluid
The brine fluid ethylene glycol is
harmful to health.
▶Avoid contact with the skin
and eyes.
▶Always wear gloves and pro-
tective goggles.
▶Do not inhale or swallow.
▶Observe the safety data sheet
that accompanies the brine
fluid.
1.3.5 Preventing the risk of
injury due to scalding
from hot and cold
components
Particularly in the coolant cir-
cuit, the components of the heat
pump can reach high temperat-

Safety 1
0020172515_05 aroTHERM Operating instructions 5
ures or extremely low temperat-
ures.
▶Do not touch any uninsulated
pipelines in any part of the
heating installation.
▶Do not remove any casing
sections.
1.3.6 Risk of being scalded by
hot drinking water
There is a risk of scalding at
the hot water draw-off points
if the hot water temperatures
are greater than 50 °C. Young
children and elderly persons are
particularly at risk, even at lower
temperatures.
▶Select the temperature so
that nobody is at risk.
1.3.7 Risk of death due to lack
of safety devices
A lack of safety devices (e.g.
expansion relief valve, expan-
sion vessel) can lead to poten-
tially fatal scalding and other
injuries, e.g. due to explosions.
▶Have your competent person
check that all required isolator
devices are present in your
heating installation.
1.3.8 Preventing the risk of
injury from freezing
as a result of touching
coolant
The product is delivered with
an operational filling of R410A
coolant. This is a chlorine-free
coolant which does not affect
the Earth's ozone layer. R410A
is neither a fire hazard nor an
explosion risk. Escaping coolant
may cause freezing if the exit
point is touched.
▶If coolant escapes, do not
touch any components of the
product.
▶Do not inhale any steam or
gases that escape from the
coolant circuit as a result of
leaks.
▶Avoid skin or eye contact with
the coolant.
▶In the event of skin or eye
contact with the coolant, seek
medical advice.
1.3.9 Risk of death due
to changes to the
product or the product
environment
▶Never remove, bridge or
block the safety devices.
▶Do not tamper with any of the
safety devices.
▶Do not damage or remove
any seals on components.
▶Do not make any changes: