Equipment And Functional Description 3; Overview; Function - Vaillant VEN 5/6 plus Notice D'emploi Et D'installation

3 Equipment and functional
description
The VEN 5/6 electric domestic hot water cylinder pro-
vides rapid delivery of hot water with none of the heat
losses associated with long piping. The electric domestic
hot water cylinder is ideal for the non-central, economi-
cal and heating-system-independent supply of heated
water and offers the following characteristics:
– Polypropylene tank
– Controller wired ready for connection in accordance
with DIN 4753 Part 1
– Splash protection IP 24 D
3.1

Overview

The Vaillant electric domestic hot water cylinder com-
prises a corrosion-proof inner tank, high-quality thermal
insulation and an outer jacket. A tubular heating ele-
ment inside the storage tank operates in combination
with integral control and safety devices to provide elec-
tric heating of the water in the cylinder.
The electric domestic hot water cylinder is an open-
vented or low-pressure vessel, which means that the
inner tank is not mains pressurised but is open to the
atmosphere.
1 1
6
8
9
10
Fig. 3.1 VEN 5 U functional diagram
Operating instructions for electric domestic hot water cylinders VEN 5/6 U and O (plus) 0020129648_01

Equipment and functional description 3

8
9
10
11
12
Fig. 3.2 VEN 5 O functional diagram
Key
1 Cold water inlet pipe
12
2 Temperature selector
3 Baffle plate
4 Tubular heating element
5 Safety temperature limiter (resettable)
2
6 Hot water outlet pipe
7 Temperature sensor
1
8 Inner tank
9 Thermal insulation
10 Jacket
11 Indicator lamp
12 Electrical connection
5
3.2

Function

Electric domestic hot water cylinder models VEN 5/6 O
and U are open-vented storage tanks in which the water
7
content is open to atmospheric pressure through the hot
water outlet pipe even with the hot water tap closed.
4
This means that the electric domestic hot water cylinder
is never under mains pressure.
Whenever the hot water tap is opened, cold water flows
through the cold water supply pipe into the cylinder and
forces the heated water out through the hot water out-
let pipe.
7
6
5
4
3
2
1
INT 7
EN