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Idiomas disponibles
II
SECTION II :: INSTALLATION AND
MAINTENANCE
II.1
DESCRIPTION OF THE UNIT
II.1.1
STRUCTURAL FEATURES
○ Chassis made of Peraluman panels; base in galvanised sheet steel;
sound proofed compressor chamber.
○ 1 Scroll rotary hermetic compressor complete with externalcircuit
breaker protection.
○ Water side plate brazed plate exchanger in stainless steel complete
with antifreeze resistance, expanded polyurethane insulation and air
bleed valve inside the machine.
○ Air side exchanger composed of coil with copper pipes and
aluminium fins, complete with protection grille.
○ Directly coupled centrifugal electric fan equipped with internal circuit
breaker protection, vertical condensation and evaporation air flow and
complete with protection networks.
○ Male threaded hydraulic fittings.
○ Differential pressure switch that protect the unit from any water flow
interruptions.
○ Cooling circuit realised with annealed copper pipes (EN 12735-1-2)
complete with: drier filter, load connections, high pressure side manual
rearming safety pressure switch, safety valve, automatic rearming
pressure switch to control low side pressure, liquid-moisture indicator,
thermostatic expansion valve (2 for THCEY), cycle inversion valve (for
THCEY), safety valve liquid receiver (for THCEY) and check valve (2 for
THCEY).
○ The T version is complete with storage, expansion vessel calculated
for the quantity of water present inside the machine (maximum
operating pressure 3 bar, pre-load 1 bar, 7l capacity), 3 bar safety
valve, drain cocks (supplied and to be installed), manual bleed valve,
pump (121 T-128 T), circulator (114 T-117 T) or high head pump (114
H-117 H).
○ Unit complete with:
Condensation drain tray (for THCEY);
compatible with AdaptiveFunction Plus function.
Ecological R410A refrigerant fluid load.
II.1.2
ELECTRICAL CONTROL BOARD
○ Electrical panel accessed by removing the upper left panel,
compliant with IEC Standards in force, which can be opened and closed
with a suitable tool.
○ Complete with:
electrical wiring arranged for power supply
400V-3ph+N-50Hz;
auxiliary circuit power supply 230V-1ph-50Hz derived from main
power supply;
main power supply switch with interlocking safety door isolator;
automatic compressor protection switch;
auxiliary circuit protection fuse;
Fan protection fuse (114-126);
Automatic switch for fan protection (128)
compressor power contactor;
removable machine controls.
○ Programmable microprocessor electronic board handled by the
keyboard inserted in the machine. This electronic board performs the
following functions:
Regulation and management of the set points for unit flow water
temperature; cycle inversion (for THCEY); safety timer delays;
circulating pump; compressor and pump hour-run meter; temperature
defrost cycles (for THCEY); electronic anti-freeze protection which cuts
in automatically when the machine is switched off; and functions which
control the operation of the individual parts making up the machine;
complete protection of the unit, possible shutdown and display of all
the triggered alarms;
compressor protection phase sequence monitor;
unit protection against low or high phase power supply voltage;
SECTION II : INSTALLATION AND MAINTENANCE
visualisation of the programmed sets via display; of the in/out water
temperatures via display; of the alarms via display; of chiller or heat
pump operation via LED (for THCEY); of the electrical tension values
present in the three phases of the electrical power circuit supplying the
unit;
self-diagnosis with continuous monitoring of the unit functioning
status.
user interface menu;
alarms log management (if the KTR accessory is present, menu
protected by factory password). In particular, for every alarm, the
following are memorised:
date and time of intervention (if the KSC accessory is present);
alarm code and description;
inlet/outlet water temperatures values when the alarm intervened;
the condensation pressure values at the time of the alarm (if the KFI
accessory is present);
alarm delay time from the switch-on of the connected device;
compressor and fan status at the time of the alarm (if the KFI
accessory is present, it displays the output status in analogue);
○ Advanced functions:
set-up for serial connection (KRS485, KFTT10, KRS232, KUSB
accessory);
configured to manage time slots and work parameters with the
possibility of daily/weekly operation planning;
check-up and monitoring of scheduled maintenance status;
computer-assisted unit testing;
self-diagnosis with continuous monitoring of the unit functioning
status.
dynamic set-point adjustment (AdaptiveFunctionPlusfunction).
II.2
SPARE PARTS AND ACCESSORIES
IMPORTANT!
Only Use original spare parts and accessories.
RHOSS S.p.A. shall not be held liable for damage
caused by tampering with or work carried out by
unauthorised personnel or malfunctions caused by
the use of non-original spare parts or accessories.
II.2.1
FACTORY FITTED ACCESSORIES
RAA – Storage antifreeze resistance..
USC – Horizontal fan expulsion air flow.
SIL – compressor soundproofing via muffler.
DSP – Double set-point via digital consensus (incompatible with the CS
accessory). It is only compatible with Precision mode.
CS – sliding set point via 4-20mA analogue (incompatible with DSP
and KEAP accessories). It is only compatible with Precision mode.
SFS – Soft Starter device
RCC – compressor crankcase heater.
II.2.2
ACCESSORIES SUPPLIED SEPARATELY
KFA – Water filter.
KSA – Rubber anti-vibration mountings
KVDEV – 3-way diverter valve for managing the production of domestic
hot water.
KRIT –Supplementary electric heater for heat pump.
KFI – Low ambient control for continuous control of the fan rotation
speed down to outdoor air temperatures of –10°C during chiller
operation, for ambient air temperatures up to 30°C during heat pump.
KTR – Keyboard for remote control with backlit LCD display.
KSC - Clock card to display date/time and to regulate the machine with
daily/weekly start/stop time bands, with the possibility to change the set-
points. The settings can be set from the remote keyboard (KTR) or by
the supervisor.
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