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Idiomas disponibles
II
SECTION II: INSTALLATION AND
MAINTENANCE
II.1
UNIT DESCRIPTION
II.1.1
CONSTRUCTION FEATURES
○ Load-bearing structure and panels in galvanised and RAL 9018
painted sheet metal; galvanised steel sheet metal base.
○ Scroll type hermetic rotary compressors complete with internal
thermal protection and crankcase heater (for models 127 ÷ 130)
automatically activated when the unit stops (provided the unit is kept
electrically powered).
○ Adequately insulated, braze-welded plate water side heat exchange
in stainless steel complete with anti-freeze heater.
○ Air side heat exchanger composed of a coil with copper pipes and
aluminium fins, complete with protection grille.
○ Dual electric helical fans with external rotor supplied with internal
thermal protection and complete with protection mesh.
○ Male threaded hydraulic connections.
○ Differential pressure switch that protect the unit from any water flow
interruptions.
○ Refrigerant circuit made of annealed copper tube (EN 12735-1-2)
complete with: filter drier, charging ports, safety pressure switch on the
high pressure side, pressure switch on the low pressure side, safety
valve (for models 127 -130), thermostatic expansion valve (No. 2 for
THAEY), reverse cycle valve (for THAEY), liquid receiver (for THAEY)
and check valves (No. 2 for THAEY).
○ Unit with IP24 protection rating.
○ The unit is complete with a charge of R410A refrigerant.
II.1.2
AVAILABLE INSTALLATIONS
Pump P0 - Set-up with low head circulator.
Pump P1 – Installation with pump.
Tank & Pump ASP0 - Set-up with low prevalence circulator and
accumulation.
Tank & Pump ASP1 – Installation with pump and water buffer tank.
The inertial storage tank is installed on the hydraulic circuit outlet.
II.2
ELECTRICAL BOARD
○ Electrical board accessible by opening the front panel, conforming
with current IEC norms, 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 keyboard inserted in the machine.
○ This electronic board performs the following functions:
Regulation and management of the 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 memorized 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, KBE, KBM,
KUSB accessory);
possibility to have a digital input for remote management of the
double set point.
possibility to have an analogue input for the scrolling set-point via a
4-20mA remote signal;
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 Adaptive Function Plus with two
options:
fixed set-point (Precision options);
scrolling set-point (Economy option).
II.3
SPARE PARTS AND ACCESSORIES
IMPORTANT!
Only use original spare parts and accessories.
S.p.A. shall not be held liable for damage
RHOSS
caused by tampering or work carried out by
unauthorised personnel or malfunctions caused by
the use of non-original spare parts or accessories.
II.3.1
FACTORY FITTED ACCESSORIES
RAS - Storage antifreeze heater (90 W) (available for ASP0 - ASP1
versions).
RCC - Compressor crankcase heater (90 W for model 122). Standard
for models 127 ÷ 130.
RAP – Unit with pre-painted copper-aluminium coils.
BRR – Unit with copper-tinned copper condensation coils.
RAB - Joint base antifreeze heater recommended for operation in heat
pump at low outdoor air temperatures.
SFS – Soft-start device to reduce peak current in the start-up phase.
SIL - Silenced installation (soundproofed compressor compartment +
compressor hood + device for fan adjustment).
FI10 - Proportional electronic device for continuous regulation of fan
rotation speed up to -10 ° C outside air temperature in chiller operation
and up to 40 ° C outside air temperature in heat pump operation .
BT - Low water set-point temperature.
DSP - Double set-point with digital consent (incompatible with CS
accessory).
CS - Sliding setpoint with an analogue 4-20 mA signal (incompatible
with the DSP and KEAP accessory).
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