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Operation and maintenance
NEW EcoHeater
DSEH200301.01.EN
Continuous product development may give rise to specification changes without notice.
Control
The EcoHeater has a factory-set time programme for continuous operation at
one speed. The time programme can be changed on the Climatix display for
control at up to three fan speeds.
• In case of malfunction of FF (extract air fan), an alarm sounds and the unit
stops.
• The EcoHeater must be interlocked via circulation pump CP1.
• If GT6 (temperature sensor water in) registers a temperature that is too high,
the compressor stops. It restarts automatically when the temperature falls to
the permitted value.
• If EP1 (pressure sensor cooling circuit) and/or GT4 (temperature sensor
exhaust air) register a temperature that is too low, the compressor’s speed is
reduced until the temperature reaches the permitted value.
• If OP1 (high-pressure sensor cooling circuit) registers a condensation tem-
perature that is too high, the speed of the compressor is reduced.
• If GT4 (temperature sensor exhaust air) is lower than 12 °C, the compressor
cannot be started.
• If GT4 (temperature sensor exhaust air) is more than 3 °C lower than GT2
(temperature sensor extract air), the compressor cannot be started.
• If GF1 (water flow sensor) registers too low flow, the compressor cannot be
started. Restart occurs automatically when the permitted flow is reached.
Compressor protection
In case of an alarm from FI (frequency inverter) or HP1 (high-pressure switch),
the compressor stops. The high-pressure switch is reset manually.
Temperature control
Temperature control to EcoHeater can be controlled via external control signal
(0-10 VDC from sub-central unit, for example, district heating central), internal
radiator curve or based on accumulation tank temperature, so that full capac-
ity from the unit is utilised before the property’s alternative energy sources are
used.
Pressure control
Pressure control can be used by GP4 maintaining a constant pressure in the
extract air duct. The current air flow can be read on the Climatix display.
If the duct pressure deviates from the setpoint after a set time, an alarm sounds.
