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UC 500-MHE – INSTALLATION, USE AND MAINTENANCE MANUAL
START-UP AND COMMISSIONING
All hydraulic, aeraulic and electrical connections must be carried out before starting up the
machine. Check the availability of refrigerated water and the absence of water leakage from the
connections and from the machine.
The electronic control panel has a red LED and a green LED, which show the general status of
the unit.
Functions that can be activated via digital inputs are:
- current season;
- fresh air ventilation with heat recovery (yes, no, automatic with time slots);
- summer dehumidification;
- summer cooling;
- winter heating;
- free-cooling;
- flow-rate attenuation compared to normal setting.
Settings that can be carried out on the keyboard are:
- activation of functions (as an alternative to digital input);
- current time;
- current season (as an alternative to digital input);
- flow rate for air supply in Ventilation and Ventilation+Recirculation mode;
- standard air supply temperature and air temperature for heating and cooling;
- automatic time slots for fresh air ventilation (max. 4);
- time slots for flow-rate attenuation (max. 4);
Machines equipped with a Control Panel can also read the levels of the temperature sensors
which the machine is equipped with. These values can be useful in the testing phase or while
verifying the correct operation.
Further details can be found in the manual: "UC 500-MHE Control Panel".
When the machine is powered up, the green
LED lights up, remaining lit for about 90
seconds. During this period the control panel
carries out some checks. Later, the red LED
lights up, indicating the presence of voltage;
the machine is therefore ready to receive input
from the control panel and to perform the
required functions.
PLEASE NOTE: After the start-up time of 90
seconds, the green LED is to be considered as
input sent to the cooling compressor. If it is
continuously lit, the compressor is functioning,
if it is flashing, there is a request for operation
but the compressor is not activated because it
is waiting for the start timer or because there is
some fault.
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