Installation; Sample System Installations - Vaillant ecoTEC plus VU 446/5-5 (H-GB) Installation And Maintenance Instructions Manual

5 Installation

5 Installation
5.1

Sample system installations

▶
Use the basic installation diagrams as examples.
▶
Select the basic installation diagram based upon which
you want to configure your installation.
▶
Only install the control systems that are listed in the
tables for the basic system diagrams in order to ensure
that all of the system's functions are available.
▶
Establish the connections correctly.
▶
Observe the applicable national and international laws,
standards and directives.
▶
With older installations in particular, install a magnetic
filter at the heating circuit return in order to protect the
product against dirt from the installation.
–
Ensure that there is sufficient dimensioning in order
to prevent it from blocking quickly and to prevent high
pressure losses.
▶
Observe the information on treating heating water.
(→ Page 21)
▽
If you cannot guarantee the conditions for treating
the heating water, install an external plate heat ex-
changer to protect the product.
▶
Install the required safety devices and system compon-
ents in the installation.
5.1.1 Basic system diagram type 1: One direct
heating circuit with one optional domestic
hot water cylinder
Note
This basic diagram type can then only be used if
the product's pump is the only pump in the sys-
tem.
1 Wall-hung boiler with
internal pump
2 Prioritising diverter
valve
▶
To use this basic diagram type, ensure that the product
works within the defined operating ranges. (→ Page 30)
12
1
2 3 4
3 Heating circuit
4 Domestic hot water
cylinder
Number for Control
the basic system
diagram
0020253233 Basic control
0020253235 VRC 700
system
control
0020253236 Connected
vSMART
control
Note
The example of a basic installation diagram that
is shown in the appendix does not replace any
correct and expert system planning. (→ Page 52)
The settings for the internal pump are made at the factory.
▶
Ensure that there is sufficient dimensioning for the
connections and the domestic hot water cylinder.
(→ Page 15)
▶
Connect the external prioritising diverter valve to the plug
X13 on the main PCB.
▶
In order to control the cylinder's post-heating, connect
a VR 10 temperature sensor or a thermostat to the plug
that is connected to the main PCB.
Wiring diagram (→ Page 50)
To start up the prioritising diverter valve, it is not necessary
to set a diagnostics code. It is directly actuated by the pro-
duct's main PCB.
5.1.2 Basic system diagram type 2: Decoupled
heating circuit plus one directly connected
domestic hot water cylinder
1 Wall-hung boiler with
internal pump
2 Prioritising diverter
valve
3 Low loss header or
plate heat exchanger
▶
In order to use this basic diagram type, ensure that the
minimum flow volumes are guaranteed for the operation.
(→ Page 62)
Installation and maintenance instructions ecoTEC plus 0020261389_02
Number Carrying out the
of cir- wiring
cuits
1 See appendix or
contact customer
service for special
basic diagrams.
1 Contact customer
service.
1 Contact customer
service.
1
2 6
3 4 5
4 External pump for the
decoupled heating
circuit
5 Heating circuit
6 Domestic hot water
cylinder