Section Ii: Installation And Maintenance; Unit Description; Construction Features; Electric Panel Features - RHOSS MICROSYSTEM TCAEY Série Mode D'emploi

II SECTION II: INSTALLATION AND
MAINTENANCE
II.1

UNIT DESCRIPTION

II.1.1

CONSTRUCTION FEATURES

○ Load-bearing structure and panels in galvanised and painted sheet
steel; base in galvanised sheet steel.
○ Scroll-type hermetic rotary compressors complete with internal
thermal protection.
○ Water side, braze welded plate heat exchanger in stainless steel,
complete with antifreeze electric heater and suitably insulated.
○ Air side heat exchanger comprised of coil in copper pipes and
aluminium fins or coil in micro-channel pipes and aluminium fins,
complete with protection grille.
○ Helical-type motor-driven fan with external rotor: single for models
105 and 107, double for models 109 and 111. Fitted with internal
thermal protection and complete with protection grille.
○ Male threaded water connections.
○ Differential pressure switch that protects the unit from any
interruptions to the water flow.
○ Refrigerant circuit comprised of annealed copper pipes (EN 12735-
1-2) complete with: drier filter, charge connections, safety pressure
switch on the high pressure side, thermostatic expansion valve (x 2 for
THAEY models), cycle inversion valve (for THAEY), liquid receiver (for
THAEY models) and check valves (x 2 for THAEY models).
○ Unit with IP24 level of protection.
○ Possibility to select two controls:
• Compatible with AdaptiveFunction Plus.
○ The unit is also complete with:
• R410A refrigerant charge;
• ductable condensation drain (for THAEY models).
II.1.2

ELECTRIC PANEL FEATURES

II.1.2.1 Option with STANDARD control
○ Electrical board accessible by opening the front panel, conforming
with current IEC standards, and which can be opened and closed with a
suitable tool.
○ Complete with:
• electrical wiring prepared for a supply voltage of 230-1-50 (for
models 105÷111 single-phase) and 400-3ph+N-50Hz (for models
107÷111 three-phase);
• auxiliary power supply 230V-1ph-50Hz drawn from the main power
supply;
• general isolator, complete with door interlocking isolator;
• automatic compressor protection switch;
• protection fuse for auxiliary circuit;
• compressor power contactor;
• anti-disturbance network filter;
• phase sequence monitor to protect the compressor (for three-phase
models only);
• unit protection against lack of a power supply phase;
• transformer for electronic control;
• user interface terminal board;
• remote unit controls.
○ Programmable electronic board with microprocessor, controlled by
the keypad inserted in the machine.
○ This electronic board performs the following functions:
• Regulation and management of the unit inlet water temperature set
points; of cycle reversal (THAEY); of the safety timer delays; of the
circulating pump; of the compressor and system pump hour-run meter;
of the defrosting cycles (THAEY) at a certain temperature; of the
electronic anti-freeze protection which cuts in automatically when the
machine is switched off; and of the functions which control the operation
of the individual parts making up the machine;
• complete protection of the unit, automatic emergency shutdown and
display of the alarms which have been activated;
• display of the programmed set points via the display; of the in/out
water temperature via the display; of the alarms via the display; and of
cooling/heat-pump operation via LEDs (THAEY);
• self-diagnosis with continuous monitoring of the functioning of the
unit;
• user interface menu;
• alarm code and description;

SECTION II: INSTALLATION AND MAINTENANCE

○ Advanced functions:
• set up for serial connection (KIS and KRS232/KUSB accessory);
• check-up and monitoring of scheduled maintenance status;
• testing of the units assisted by computer;
• self-diagnosis with continuous monitoring of the functioning of the
unit;
• AdaptiveFunction function.
II.1.2.2 Option with compatible
○ Electrical board accessible by opening the front panel, conforming
with current IEC standards, and which can be opened and closed with a
suitable tool.
○ Complete with:
• electrical wiring arranged for power supply 400-3ph+N-50Hz;
• auxiliary power supply 230V-1ph-50Hz drawn from the main power
supply;
• general isolator, complete with door interlocking isolator;
• automatic compressor protection switch;
• protection fuse for auxiliary circuit;
• compressor power contactor;
• remote unit control.
○ Programmable electronic board with microprocessor, controlled by
the keypad inserted in the machine.
○ This electronic board performs the following functions:
• Regulation and management of the unit outlet water temperature set
points; of cycle reversal (THAEY); of the safety timer delays; of the
circulating pump; of the compressor and system pump hour-run meter;
of the electronic anti-freeze protection which cuts in automatically when
the machine is switched off; and of the functions which control the
operation of the individual parts making up the machine;
• complete protection of the unit, automatic emergency shutdown and
display of the alarms which have been activated;
• compressor protection phase sequence monitor;
• unit protection against low or high phase power supply voltage;
• visual indication of the programmed set points on the display; of the
inlet/outlet water temperature via the display; of the alarms via the
display; and of cooling/heat-pump operating mode via LEDs (for THAEY
models);
• self-diagnosis with continuous monitoring of the functioning of the
unit;
• user interface menu;
• alarm code and description;
• alarm history management (menu protected by manufacturer
password).
○ The following is memorised for each alarm:
• date and time of intervention (if the KSC accessory is present);
• alarm code and description;
• inlet/outlet water temperatures when the alarm intervened;
• alarm delay time from the switch-on of the connected device;
• compressor status at moment of alarm;
○ Advanced functions:
• configured for serial connection (KRS485, KFTT10, KRS232 and
KUSB accessory);
• possibility to have a digital input for remote management of the
double set point (contact
• possibility to have an analogue input for the scrolling set-point via a
4-20mA remote signal (contact
• configured for management of time bands and operation parameters
with the possibility of daily/weekly operating programs (KSC accessory);
• check-up and monitoring of scheduled maintenance status;
• testing of the units assisted by computer;
• self-diagnosis with continuous monitoring of the functioning of the
unit.
○ Set-point regulation via the AdaptiveFunction Plus with two
options:
• fixed set-point (Precision options);
• scrolling set-point (Economy option).
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