FläktGroup eQ PRIME 005, Commissioning

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52 FläktGroup DC_9355GB 20180119_R0 We reserve the right to make changes without prior notice
Questions and answers
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Temperature
The controller cannot maintain the set temperature.
What can be wrong?
• Is the heating coil/cooling coil dimensioned for
the prevailing outdoor temperature?
• Check whether the water temperature to the heaters
is sufficiently high/low.
• Check whether there is a power supply to
the electric heater.
• Ensure that there are no windows or doors open.
Temperatures have been checked.
One sensor always shows 1.8 °C too little.
Do we need to replace the sensor?
• No. It can be adjusted under:
MAIN INDEX
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UNIT
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INPUTS
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TEMPERATURE
• Each sensor has a parameter, Calibration, which
can be used to adjust the value.
Why does the current temperature setpoint deviate from the
values we have entered under “Room/extract air ctrl”?
• If the unit is equipped with room and extract air control,
the temperature is controlled by two controllers
(a room/extract air controller and a controller for the
supply air temperature). The setpoint entered on
the room/extract air controller is used to generate the
setpoint on the supply air controller. Consequently,
the setpoint for the supply air temperature will vary
with the energy requirement in the room or extract air.
• The Summer/Winter compensation function may
be activated. Compensation displaces the setpoint
depending on the prevailing outdoor temperature.
• If the selected setpoints lie outside the permitted
range, a setpoint corresponding to the maximum or
minimum limits will be obtained (depending on whether
the selected setpoint is too high or too low).
The electric heater is tripped by the automatic thermal overload
protection. How do I rectify the fault?
• Air supply temperature is too high. Reduce
the setpoint or increase the flow.
The air handling unit is switched off yet the pump to the heating
coil is running. Is something wrong?
• If the temperature of the return water from the heating
coil is low, the frost protection controller runs the pump
to the heating coil, so that the coil does not risk
freezing when the unit starts.
• The pump is exercised every Monday at 12:00 or is
set to continuous operation.
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