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4�6 Plant delivery
of the plant have been completed, the installer must ex-
plain the following to the user:
• the basic functional characteristics of the appliance
• the instructions for use
• the routine maintenance
4�7 Long period shut-down
The following operations must be carried out if the air-to-
water heat pump is not used for a long time:
– disable the device
– turn the master switch of the appliance to position
Afterswitchingotheappliance:
–
–
– close the water taps
Contact the Technical Service Centre.
If the outside temperature may fall below zero degrees
centigrade, with the likelihood of frost, the hydraulic
plant must be drained or antifreeze liquid (e.g. ethylene
glycol) must be added in the doses recommended by
the manufacturer.
To restart the heat pump after it has been out of operation
for a long time, contact the Service Centre.
4�8 Draining the plant
The units are provided with a drain cock.
4�8�1 Preliminary warnings
All operations must be carried out with the machine
stopped and disconnected from the power supply.
4�8�2 Draining
Beforestartingtheemptyingoperation:
–
–
To drain the plant:
– open the water drain tap in the bottom left of the hot
water tank
–
tank
be discharged freely because it is polluting.
External unit control panel
4�9�1 Control Panel
The external unit control panel is not a remote control
The external unit control panel it is only used during
-
tempt to programme it after this.
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