24
1
INPUT - grid supply 3x 230 V
Spring balancer 1.5 - 2.5 mm
2
NOTE! Phase and neutral con-
ductors must not be mixed up.
Residual current-operated circuit
breaker is triggered.
2
OUTPUT - L2 heating element
3
OUTPUT - L3 heating element
5
4
Hot water boiler
OUTPUT up to 3 kW variable, max.
13 A resistive load
Spring balancer 1.5 - 2.5 mm
2
6
PT1000 temperature sensor
7
8
9
10
11
External source (e.g. gas-red
heating)
Heating element (max. 9 kW)
Residual-current circuit breaker
Circuit breaker max. B16A
Ferrite (included in delivery)
Functional
Description
The Fronius Smart Meter records the current power at the feed-in point and transfers the
data to the Datamanager. By controlling the Ohmpilot, the Datamanager adjusts any sur-
plus energy that is available to zero. In detail, this takes place by continuously adjusting
the heating element connected to the Ohmpilot.
This means that the surplus energy is consumed in a continuously variable manner
with the heating element. Depending on the surplus power, the individual phases are
switched on or off and the remaining power is consumed at L1. As a result, the heating
element output is divided by three.
If no temperature sensor is tted, an external source (e.g. gas-red heating) must be
used to ensure the minimum temperature is met.
As an alternative, the Ohmpilot can also ensure the minimum temperature. For this, a
temperature sensor must be connected so that the Ohmpilot can measure the tempera-
ture. This may result in electricity being sourced from the grid.
The maximum temperature must be set on the heating element thermostat.
If the heating element does not have a thermostat, the Ohmpilot can also carry out this
task as an alternative (see "Optional Settings" section).
NOTE! A heating element with realisation of a neutral conductor is required.
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