Fast RCF Series, Руководство пользователя

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Heat recovery unit with cooling circuit - RCF -
0208-6180549-rev. 02
16
GB
Controls manual
Default configuration
It is an air-air conditioning unit with a sum-
mer/winter change-over on the inlet probe.
• The AI1 probe is on the air inlet: it controls
the temperature and the summer/winter
change-over
• The AI2 probe is on the evaporator and is
used to determine the anti-freeze tempera-
ture
• The AI3 probe is on the condenser and is
used to control condensation and defrosting
• The AI4 probe is on the air inlet and is used
for freecooling
• The ID1 input is the high pressure digital
input; it is configured as active when the con-
tact is open.
• The ID2 input is the low pressure digital
input; it is configured as active when the con-
tact is open.
• The ID3 input is the thermal switch compres-
sor; it is configured as active when the contact
is open.
• The ID4 is configured as active when the
contact is closed.
• The ID5 input is configured as active when
the contact is closed.
• Relay 1 is connected to the compressor
• Relay 2 is connected to the evaporator fan
• Relay 3 is connected to the reversing valve
• Relay 4 is connected to the electric heaters
Defrosting (fig. 01 e fig. 02)
Defrost starts when the exchanger tempera-
ture stays cumulatively under the defrosting
start temperature for 15 minutes. The defrost
start temperature is dynamic and can be seen
in the fig. 01.
Defrost times are indicated in the fig. 02.
High temperature alarm
If the temperature of the inlet air is very high
this causes considerable overheating. If the
air temperature exceeds 42 °C, the instrument
signals an alarm without stopping the com-
pressor.
Parameters setting
Temp AI4
Temp AI3
FD
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fig. 01
Temp AI3: exchanger temperature
Temp AI4: outdoor temperature
FD: end of defrosting
MAX 9 min 1 min 1 min
COMP
RV
CV
<IMG INFO>
fig. 02
COMP: compressor
RV: reversing valve
CV: condenser valve