Enerblue PURPLE, User And Maintenance Manual

Page: 23 / 40

USER and
MAINTENANCE
MANUAL
23
9.6 MICROPROCESSOR CONTROL
Refer to the control manual supplied with the unit�
9.5 CONTROL OF FANS SPEED (*)
The unit is equipped as standard with a fan speed control device� In this way, it is possible to operate with
rather low external temperatures, reducing the air flow rate to the condenser and allowing the unit to
operate with acceptable functioning parameters�
This device can also be used to reduce the sound emissions of the unit when the external air temperature
tends to decrease (e�g� during the night)�
This control is calibrated and inspected in the factory�
If the external pump is controlled by an external controller, the pump
must be started before the unit and stopped after it the latter shuts
down with a recommended minimum advance/delay of 5 minutes.
Warning: the speed control calibrations must never be modified. If this
is required, please contact the manufacturer.
9.4 CIRCULATION PUMP ELECTRIC CONNECTIONS
In order to run the unit, the external consent has to be closed (refer to the electrical diagram provided
with the unit)�
The unit can only be started after the circulation pump of the hydraulic system is running, when
applicable�
The contacts of the external consents must be short circuited if not needed for system requirements�