**An example of typical value adjustments:
1. If the room temperature is too cold when the outdoor temperature is −10 °C, slightly increase the flow
water setpoint at outdoor temperature points −13 °C and −7 °C.
2. Wait for at least two or three days to see if the change has made a difference.
3. Readjust the curve if necessary.
Heating circuit 2 and 3
See the instructions for heating circuit 1 setup. The circulation pump and control valve for heating circuit 2
and 3 require an auxiliary controller.
→ ADDITIONAL HEATING
An electric immersion heater (in-line heater) operates in the same manner as the compressor and uses
the same setpoint values. The heater switches on and off (and transitions between higher and lower
power stages) with a delay.
Internal electric heater
The condenser flow line includes an electric in-line heater.
ECO I: optional accessory
Additional heating
Not in use
The condenser circuit has no in-line heater (electric immersion heater).
Start delay with
compressor
The electric heater’s start delay in space heating. Once the delay has elapsed, the
first electric immersion heater power stage will be switched on.
● Increase the delay, if you wish to move forward the point at which the heater is
switched on (and starts to provide supplementary heating in parallel with the
compressor).
● Usually, the delay should be set to 120–600. The following power stages are
governed by the
Power increase delay
instead.
The delay is based on degree minutes, and it applies when the compressor is
running and the flow water temperature is below its setpoint. The delay is calculated
by subtracting the measured flow water temperature from the flow water setpoint.
Once the measured temperature is above the setpoint, the delay will be reset.
Power increase
delay
The electric heater’s power increase delay after the first power stage has been
activated. Once the delay has elapsed, the next electric heater power stage will be
switched on.
● Increase the delay, if you wish to move forward the point at which the next
power stages will be switched on to provide supplementary heating (in parallel
with the compressor and the first stage).
● Usually, the delay should be set to 40–120.
The delay is based on degree minutes, and it applies when the compressor
is running, the electric heater’s first power stage is active, and the flow water
temperature is below its setpoint. The delay is calculated by subtracting the
measured flow water temperature from the flow water setpoint. Once the measured
temperature is above the setpoint, the delay will be reset.
Power decrease
delay
The delay for switching off power stages. The last stage to have been activated will
be switched off first, the stage that was activated the second after the delay has
elapsed for a second time, and the first stage will be switched off when the delay
elapses for a third time.
● Decrease the delay, if you wish to have the power stages switch off earlier after
the flow water temperature exceeds its setpoint.
● If the delay is greater than 0, the heater power stages will remain switched
on even after the flow water temperature has exceeded the setpoint. Setting
the delay slightly above zero will usually result in a more stable flow water
temperature.
● Usually, the delay should be set to 0–2.
The delay is based on degree minutes, and it applies when the compressor is
running, the electric heater is active, and the flow water temperature is above
its setpoint. The delay is calculated by subtracting the measured flow water
temperature from the flow water setpoint. Once the measured temperature is below
the setpoint, the delay will be reset.
M8003 2219EN
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Summary of Contents for ECO Inverter+ 7
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