Fast RCF Series, Manual

Heat recovery unit with cooling circuit - 

RCF

 -

0208-6180549-rev. 02

19

GB

Controls manual 

Pa  A17 Turns  compressor  OFF  if  over-tem-
perature

If  set  to  1  it  turns  off  the  compressor  if  an 
over-temperature alarm is generated

Pa A18 Select anti-freeze alarm probe

• 0 = probe AI1 
• 1 = probe AI2 

Compressor parameters

Pa C01 OFF-ON safety time 

The minimum period of time that must elap-
se between turning off the compressor and 
turning it on again. It is expressed in tens of 
seconds.

Pa C02 ON-ON safety time

The minimum period of time that must elap-
se between turning the compressor on and 
turning it on again. It is expressed in tens of 
seconds.

Pa  C03  Temperature  control  hysteresis  in 
Cooling mode

Used  to  select  the  activation  differential  in 
Cooling mode.

Pa  C04  Temperature  control  hysteresis  in 
Heating mode

Used  to  select  the  activation  differential  in 
Heating mode.

Pa  C05  Regulation  step  intervention  diffe-
rential

Used  to  set  a  temperature  differential  in 
relation  to  the  set  point  beyond  which  the 
second step is activated. 

Pa  C06  Interval  between  compressor  1  – 
compressor 2 start-up (step)

Used to set a delay between turning on the 
first and the second step

Pa  C07  Interval  between  compressor  1  – 
compressor 2 shut-down (step)

Used to set a delay between turning off the 
first and the second step.

Fan parameters

Pa F01 Fan output configuration

•  0:  proportional  condensation  control  TK 
output
• 1: ON-OFF TK output
•  2:  anti-freeze  electric  heater  output  for 
water-water machines with gas reversal
• 3: TK ON-OFF output on compressor

Pa F26 Freecooling offset in cooling mode

Moves the freecooling set point in relation to 
the cooling set point

Pa  F27  Freecooling  proportional  band  in 
Cooling mode

Freecooling control band

Pa F28 Freecooling offset in heating mode

Moves the freeheating set point in relation 
to the heating set point

Pa F29 Freeheating band in Heating mode

Freeheating control band

Pa F30 Outdoor/internal temperature offset 
in freecooling and freeheating

Offset  in  controller  that  compares  outdoor 
and internal temperature

Pa F31 Minimum damper opening

Minimum damper opening value 

Pa F32 Freecooling shut-down set point

Outdoor temperature that shuts down free-
cooling

Pa F33 Freecooling shut-down offset

Controller  offset  that  shuts  down  freecoo-
ling

Evaporator fan parameters

Pa P01 Evaporator fan operating mode 

May be used to determine the pump or fan 
operating mode
• 0=  continuous operation
•  1=    fan  shuts  down  as  the  same  time  as 
the compressor
• 2=  continuous operating of fan in cooling 
mode, on request in heating mode
• 3=  continuous operating of fan in cooling 
mode, on request in heating mode
• 4=  continuous operating of fan in heating 
mode, on request in cooling mode

Pa  P02  Delay  between  fan  ON  and  com-
pressor ON

It  sets  a  delay  between  the  start  up  of  the 
fan  and  the  compressor.  It  is  expressed  in 
seconds.

Pa  P03  Delay  between  compressor  OFF 
and fan OFF

It sets a delay between the shutdown of the 
unit and the fan. It is expressed in seconds.

Anti-freeze/boiler parameters

Pa  r01  Configuration  of  electric  heaters  in 
Defrost mode

Determines electric heater operation when 
the defrost function is activated
• 0=On only when requested by temperatu-
re controller 
• 1=Always on in Defrost mode

Pa  r02  Configuration  of  electric  heaters 
activated in Cooling mode

Determines  electric  heater  operating  in 
Cooling mode
• 0=Off in Cooling mode

•  1=On  in  cooling  mode  (depending  on 
the  anti-freeze  electric  heater  regulation 
algorithm)

Pa  r03  Configuration  of  electric  heaters 
activated in Heating mode

Determines  electric  heater  operating  in 
Heating mode
• 0=Off in Heating mode
•  1=On  in  Heating  mode  (depending  on 
the  anti-freeze  electric  heaters  regulation 
algorithm)

Pa  r04  Configuration  of  anti-freeze  electric 
heater control probe in heating mode 

Determines the control probe of the electric 
heaters in Heating mode
• 0=Controls on probe AI1
• 1=Controls on probe AI2

Pa  r05  Configuration  of  anti-freeze  electric 
heater control probe in cooling mode 

Determines the control probe of the electric 
heaters in Cooling mode
• 0=Controls on probe AI1
• 1=Controls on probe AI2

Pa  r06  Configuration  of  electric  heaters  in 
OFF or stand-by mode

Determines  the  status  of  electric  heaters 
when the unit is in OFF or Stand-by mode
• 0=Always off in OFF or stand-by
•  1=On  in  OFF  or  stand-by  (depending 
on  the  anti-freeze  electric  heater  control 
algorithm)

Pa  r07  Anti-freeze  electric  heater  set  point 
in Heating mode

È  il  valore  di  temperatura,  in  heating,  al  di 
sotto del quale vengono attivate le resisten-
ze antigelo. 

Pa  r08  Anti-freeze  electric  heater  set  point 
in Cooling mode

It  represents  the  temperature,  in  Heating 
mode, below which anti-freeze electric hea-
ters are activated.

Pa  r09  Maximum  set  point  limit  for  anti-
freeze electric heaters

Sets the maximum set point for anti-freeze 
electric heaters.

Pa  r10  Minimum  set  point  limit  for  anti-
freeze electric heaters

Sets  the  minimum  set  point  for  anti-freeze 
electric heaters.

Pa r11 Anti-freeze electric heater hysteresis
Pa r12 Enable heat pump shut-down

• 0= heat pump always on
•  1  =heat  pump  shut  down  when  outdoor 
temperature is too cold

Pa  r13  Outdoor  temperature  set  point  for 
deactivation of heat pump

The  temperature  below  which  the  heat 
pump is turned of. 

Pa  r14  Differential  for  deactivation  of  heat