Ferroli RHA series, Руководство по установке

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*: For more details refers to section monitoring basic system.
Protection devices HIGH PRESSURE
The unit is protected against risk of overpressure by means of 5 levels protection chain.
Each circuit is equipped with:
1) ATC (Cooling Capacity Control)
2) high pressure transducer connected to electronic controller (if installed)
3) high pressure automatic switch connected to electronic controller
4) high pressure manual switch connected to compressor contactor command
5) high pressure safety valve
Protection devices technical data
LEVEL 1 2 3 4 5
Device
ATC (Cooling Capacity
Control)
High pressure
transducer
High pressure
automatic switch
High pressure
manual switch
High pressure
safety valve
Trip out (barg)
- 40.5 41.0 43.0 45.0
Trip in (barg)
- 29.5 31.0 41.0
connected to
electronic controller electronic controller electronic controller
compressor contactor
command
Discharge the refrigerant
to atmosphere to reduce
the system pressure
effect
Controls the cooling
capacity shutting down
compressors
stop the compressors
and the fans of that
circuit
stop the compressors
and the fans of that
circuit
stop the compressors
of that circuit
Discharge the refrigerant
to atmosphere to reduce
the system pressure
reset *
Automatic
YES by keyboard after
the solution of the
problem
that generates the
alarm
YES by keyboard if the
high pressure switch has
trip-in and after the
solution
of the problem that
generates the alarm
Press the button
present on the manual
pressure switch
CAUTION
Not necessary
R410A PROTECTION DEVICES
LEVEL 1 2
Device
Low pressure
transducer
Low pressure
automatic switch
Trip out (barg)
2 bar 2 bar
Trip in (barg)
4 bar 4 bar
connected to
electronic controller electronic controller
effect
stop the compressors
of that circuit
stop the compressors
of that circuit
reset *
YES by keyboard
after the solution of the
problem that generates
the alarm
YES by keyboard if the
low pressure switch
has trip-in and after the
solution of the problem
that generates the
alarm
Protection devices LOw PRESSURE
LEVEL 2
Device
Discharge Temperature
Trip out
135°C
Trip in
120°C
connected to
electronic controller
effect
stop the single compressor
reset *
YES by keyboard after the
solution of the problem that
generates the alarm
Protection devices DISCHARGE TEMPERATURE (if installed)
*: For more details refers to section monitoring basic system.
CAUTION
IN CASE OF COMPRESSORS TRIP-OUT BY MANUAL RESET HIGH PRESSURE SwITCH THERE ARE NO EVIDENCES IN THE
MONITORING SYSTEM, DO NOT RESET THE PRESSURE SwITCH BEFORE YOU HAVE DONE THE FOLLOwING STEPS:
1) SHUT DOwN THE UNIT USING THE OFF BUTTON
2) THEN RESET THE HIGH PRESSURE SwITCH