Fronius Ohmpilot Instructions De Service page 91

(1)
INPUT - grid supply 1x 230 V, Spring balancer 1.5 - 2.5 mm
(2) Multifunctional relay output
WARNING!
Dangerous voltages.
A wire detaches and touches dangerous voltages.
▶
If signal cables are connected, the individual wires must be tied together with a ca-
ble tie directly upstream of the terminal.
(3) OUTPUT up to 3 kW variable, max. 13 A resistive load, spring balancer 1.5 - 2.5
2
mm
(4) Hot water boiler
(5) Temperature sensor PT1000
(6) External source (e.g. gas-fired heating)
NOTE!
Relay contacts can oxidize.
The voltage must be at least 15 V and the current at least 2 mA, so that the relay conta-
cts do not oxidise.
(7) Heating element (max. 3 kW)
(8) Residual current circuit breaker
(9) Automatic circuit breaker max. B16A
(10) Ferrite (included in scope of supply)
The Fronius Smart Meter records the current power at the feed-in point and transfers the
data to the inverter. By controlling the Ohmpilot, the inverter adjusts any surplus energy
that is available to zero. In detail, this takes place by continuously adjusting the heating
element connected to the Ohmpilot. Surplus energy is consumed using the heating ele-
ment in a continuously variable manner.
The temperature is measured by the Ohmpilot. If the temperature falls below the mini-
mum, then an external source (e.g. gas-fired heating) will be activated until the minimum
temperature is reached again, so that the Ohmpilot only uses surplus energy and does
not draw any energy 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 al-
ternative (see chapter Optional settings
The heating element is used for switching the legionella prevention on and off.
This function can also be combined with a 3-phase heating element.
on page 108).
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