Electrical connection
21
VVM 240
Connecting the outside sensor
Install the outside sensor in the shade on a wall facing
north or north-west, so it is unaffected by the morning
sun. The sensor is connected with a two-wire cable to
terminal block (14) positions 1 and 2, on the load mon-
itor card (2).
If a conduit is used it must be sealed to prevent con-
densation in the sensor capsule. The minimum cable
cross section should be 0.4 mm
2
up to lengths of 50
metres, for example, EKKX or LiYY.
NOTE!
The sensor and communication cables must
not be routed closed to the power cable.
The two immersion heaters have a total maximum out-
put of 13.5 kW The power rating as set at the factory is
9 kW, which corresponds to position D on the knob
(101) on the load monitor card (2).
Output as set at the factory
Resetting the temperature
limiter
6
Max phase current
The setting of the different maximum immersion
heater outputs is done using the knob (101) on the
load monitor card (2). The set value is shown in menu
8.3.2.
The setting of the different maximum boiler tempera-
tures is done using the knob (102) on the load monitor
card (2). The set value is shown in menu 9.3.1.
7,5
C
11,0
10,5
E
15,5
3,0 A
4,7
Immersion heater, output (kW)
Knob position
Max load phase (A)
6,0 B
9,0
9,0
D
13,5
13,5
F
19,8
Max boiler temperature
65
C
75
E
55 A
Boiler temperature
Knob position
60
B
70
D
80
F
2
101
102
VVM 240
Outdoors, north or north west
NOTE!
Work behind screwed covers may only
be carried out under the supervision
of a qualified installation engineer.
The temperature limiter (6) is accessible from behind
the centre front cover and is positioned under the
inner protective cover.
The temperature limiter is reset by firmly pressing in
its button. The button can be accessed from the
underside of the distribution box. The cover on the dis-
tribution box does not need to be removed when
resetting.
