18
RF-SVX003A-GB
•
Electrically unconnected unit: in this case the
frost resistances of the unit could not warranty
the protection. So it is absolutely necessary
unload the unit content for A.C.S., instead for air
conditioning it is necessary to add the correct
glycol quantity indicated in the chapter: “Ethylene
glycol correction table”.
Precaution for very low outdoor temperature
The unit has variable fl ow pumps on the primary circuit
which allow to start with low water temperature in the
storages or in the plant, automatically, but the water
temperature should not be lower than 10°C.
In case of installation conditions with a lower
temperature:
1.
If there are storages, insert electric resistances to
be calculated by :
PrWatt = V x (10 – tmin) / 860
where: PrWatt is the resistance power (Watt) and tmin is
the lower temperature (°C)
2.
If there are not storages, maintain the
temperature higher than 10°C the water
temperature by inserting thermostatic resistance
with power calculated as in case 1.
Control of compressor fastening
The compressors are fi tted on shock absorbers. After
receiving the unit check if there are blockages to fasten
the compressors during the transportation. If there
are, it is necessary to remove blockages put to fasten
the compressors feet before the start-up otherwise the
warranty is not valid.
Acoustic Protections
When the sound level must be checked in particular, it
is necessary to pay attention to isolation from the base
of the unit properly applying the anti-vibration mounts
(provided optionally). Also, install fl exible joints on water
connections.
General precautions
