Pressure drop on the DHW side
A
B
500 600
800 1000
2000
3000
4000 5000
0.3
0.4
0.5
0.6
0.8
1
2
3
4
5
6
8
10
3
4
5
6
8
10
20
30
40
50
60
80
100
kPa
6000
8000
Pressure drop
DHW flow rate
in l/h
mbar
A
Cylinder capacity 300 l
B
Cylinder capacity 400 and 500 l
500 600
800 1000
2000
3000
4000 5000
0.3
0.4
0.5
0.6
0.8
1
2
3
4
5
6
8
10
3
4
5
6
8
10
20
30
40
50
60
80
100
kPa
6000
8000
Pressure drop
DHW flow rate
in l/h
mbar
A
B
A
Cylinder capacity 750 l
B
Cylinder capacity 950 l
EHE Immersion heater
Part no. Z012676
■ For cylinder capacity of
300 l
■ For installation into the
lower
flanged aperture
■ Use the immersion heater only with soft to medium hard water with
a calcium hardness up to 14 °dH (hardness level 2, up to
2.5 mol/m
3
).
■ The heating output can be selected: 2, 4 or 6 kW
Components:
■ High limit safety cut-out
■ Temperature controller
Note
■ A contactor relay, part no. 7814681, is required for switching the
immersion heater via the heat pump.
■ The immersion heater is not intended for operation with 230 V~. If
no 400 V connection is available, use commercially available
immersion heaters.
Specification
Output
kW
2
4
6
Rated voltage
3/N/PE 400 V/50 Hz
IP rating
IP 44
Rated current
A
8.7
8.7
8.7
Heat-up time from 10 to 60 °C
7.4
3.7
2.5
Capacity that can be heated by
the immersion heater
l
254
Impressed current anode
Part no. 7265008
■ Maintenance free
■ Install in place of the magnesium anode supplied
Installation accessories
(cont.)
VITOCAL
VIESMANN
89
5831388
6
