I&O manual
4
Controller installation place
2.1.8 Prolonged shutdown
For safety, please shut off the power before maintenance.
Cooling
Heating
Fig.2-4
INSTALLATION PLACE INSTRUCTION
(For suspending mounted, it is not allowed to install the controller in
here.)
CAUTION
IMPORTANT!
If the unit is not used during the winter period, the water
contained in the system may freeze.
If the machine is going to be out of use for long periods of
time, it is necessary to disconnect the unit from the mains by
opening the main switch (which is required to be fitted by the
installer).
If the unit is not used during the winter period, the water
contained in undertaken in good time.
Alternatively, a suitable quantity of anti-freeze should be
mixed with the water.
2.1.9 Startup after prolonged shutdown
Before starting up the unit again:
Clean or change the air filters:
Clean the heat-exchanger.
Clean the condensation collector tray drain tube or make sure it
is clear.
Bleed any air from the water system.
It is advisable to run the unit at maximum speed for several
hours.
2.2 Cleaning the unit
CAUTION
Controller can be only installed in 3-way valve side.
Information about further risks and unavoidable hazards
installation manual for controller.
DANGER!
Always switch off the electric power before beginning
cleaning or maintenance operations.
Do not spill water on the unit.
In versions with casing, it is possible to clean the outside of
the unit. For cleaning, use a soft cloth dampened with water
and alcohol. Do not use hot water, solvents or abrasives, or
corrosive substances.
Cleaning the air filter
Fig.2-5
The following operations can be carried out using the control
panels:
Start/stop the unit.
Select between the three blower speeds.
Thermostat adjustment and maintenance of the desired ambient
temperature.
Switching between operation modes: cooling and heating.
Constant ventilation control.
Specific instructions for use are supplied with the controllers
themselves.
To ensure correct air intake, the air filter must be cleaned at
least once a month, or more frequently if the unit is being
used in very dusty environments. The filter must always be
removed from the unit for cleaning.
The filter is housed in the lower part of the unit in versions II
and III which take in air from below or from the rear.
To remove the filter in versions II and III proceed as following
indicated.
Fig.2-6
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