Serial Number; Information On The Data Plate; Connection Symbols; Ce Marking - Vaillant VWZ MEH 97/6 Operating Instructions Manual

3.4

Serial number

The serial number can be found on the data plate on the rear
of the electronics box.
The serial number may also be shown on the product's
display (→ Operating instructions).
3.5

Information on the data plate

The data plate keeps record of the country in which the
product is to be installed.
Information Meaning
Serial no. Unique unit identification number
Nomen- VWZ Vaillant heat pump accessory
clature
MEH Electro-hydraulic module
97 9 = 9 kW back-up heater
7 = integrated 3-port motorised
valve for external domestic hot wa-
ter cylinder
/6 Unit generation
230 V Electrical connection:
230 V: 1~/N/PE 230 V
400 V: 3~/N/PE 400 V
IP Protection class
Symbols Control
Heating circuit
Back-up heater
P max Rated power, maximum
P Rated power
I max Rated current, maximum
I In-rush current
Heating MPa (bar) Permissible operating pressure
circuit,
domestic
L Fill quantity
hot water
circuit

CE marking

See section "CE marking"
3.6

Connection symbols

Symbol Connection
Building circuit, flow
Building circuit, return
Heating flow, outdoor unit
0020291544_03 Installation and maintenance instructions
Symbol Connection
Heating return, outdoor unit
Heating flow, domestic hot water cylinder
Heating return, domestic hot water cylin-
der
3.7 CE marking
The CE marking shows that the products comply with the
basic requirements of the applicable directives as stated on
the declaration of conformity.
The declaration of conformity can be viewed at the manufac-
turer's site.
3.8

Cooling mode

Depending on the country, the outdoor unit has the heating
mode or heating and cooling mode function. The indoor unit
is compatible with this.
Outdoor units that are delivered at the factory with no cooling
mode are labelled with "S2" in the nomenclature. For these
units, an optional accessory can be used to subsequently
activate the cooling mode.
It is activated via a coding resistor and via a setting on the
indoor unit's control panel and on the optional system control
(→ Section 8.18).
3.9 Display of the energy consumption, energy
yields and efficiencies
The product, the system control and the app show approx-
imate values for energy consumption, energy yields and ef-
ficiencies, which are extrapolated based on calculation al-
gorithms.
The values that are displayed in the app may differ from the
other display options due to staggered transfer intervals.
The determined values depend on:
–
Installation and system of the heating installation
–
User behaviour
–
Seasonal weather effects
–
Various tolerances of unit-internal components
The recording of the values only includes the product in the
factory-delivered condition. Supplementary accessories,
even if they are installed on the product, as well as any other
components in the heating system and other external con-
sumers, are not part of the data recording.
Deviations between the determined values and the actual
values may be significant. The determined values are there-
fore not suitable for creating or comparing energy billing, for
example.
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