Functional Elements; Serial Number; Information On The Data Plate; Connection Symbols - Vaillant uniTOWER plus Operating Instructions Manual

3.3

Functional elements

13
12
11
10
9
8
7
6
5
4
1 Safety cut-out
2 Back-up heater
3 Condensate tray
4 Draining the domestic
hot water cylinder
5 Domestic hot water
cylinder
6 Draining cock, heating
flow and return draining
cock and building circuit
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).
20
1
2
3
7 Manometer and filling
tap
8 Potable water expan-
sion vessel
9 Prioritising diverter
valve
10 Purging valve
11 Electronics box
12 Expansion vessel
13 Automatic air vent
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- VIH Vaillant indirect domestic hot water
clature cylinder
QW Rectangular domestic hot water
cylinder
190 Cylinder volume
E With electric back-up heater
/6 Unit generation
IP Protection class
Symbols Cylinder heating coil
Control
Heating circuit
Cylinder tank, fill quantity, permiss-
ible pressure
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
Heating return
Installation and maintenance instructions 0020291525_04