tcaes 230÷4160 thae - Rhoss

SECTION II: INSTALLATION AND MAINTENANCE
II
SECTION II: INSTALLATION AND
MAINTENANCE
IMPORTANT!
The unit will only function correctly if the
instructions for use are scrupulously followed, if
the clearances are complied with during installation
and if the operating restrictions indicated in
Paragraph II.1.2 are strictly adhered to.
II.1.1 MACHINE DESCRIPTION
II.1.1.1 Construction features
○ Chassis made of aluminium profiles with Peraluman panelling,
models 230 ÷ 260 are insulated on the inside with sound insulation
material; models 470 ÷ 4160 feature a steel base.
○ Scroll hermetic rotary compressors complete with thermal overload
protection.
○ Limiting as indicated in the following table:
MODEL Compressors/N° of steps N° of circuits
230 ÷ 260 2/2 1
470 ÷ 4160 4/4 2
○ Evaporator or condenser/evaporator featuring stainless steel plates
complete with antifreeze heating element and closed cell foamed
polyurethane rubber insulation.
○ Differential pressure switch to protect the unit from any interruptions
in the flow of water.
○ Male threaded water connections on all models.
○ Air condenser or evaporator/condenser featuring copper coils and
aluminium fins.
○ Axial flow fans complete with protective grilles.
○ Phase controller to protect the compressor.
○ Cooling circuit featuring mild copper piping welded with precious
alloys. Supplied complete with: dehydrator filter, charge connections,
high pressure switch with manual reset, low pressure switch with
automatic reset, liquid-moisture sight-glass, thermostatic expansion
valve, pressure transducer (on THAE-THAES), cycle inversion valve
(on THAE-THAES), non return valve (on THAE-THAES) and a liquid
receiver (on THAE-THAES).
○ Unit complete with:
• R 407c refrigerant charge.
II.1.1.2 Control board features
○ The control board can be accessed from a front panel in
compliance with IEC standards.
Waterproof box supplied with special key and complete with:
• electrical wiring for the 400V-3ph+N-50Hz power supply;
• power supply to auxiliaries: 230V-1ph-50Hz;
• control power supply: 12V-1ph-50Hz;
• power contactors;
• remote appliance controls;
• general isolator with door interlock on the power supply;
• automatic overload cut-out on each compressor and fan;
• automatic overload cut-out on the auxiliary circuit.
○ Programmable microprocessor electronic circuit board managed
from the keyboard on the appliance.
The electronic circuit board manages the following functions:
• adjustment and management of inlet/outlet water temperature
settings; safety delays; hour meters for each compressor; automatic
inversion of compressor start up sequences, defrosting cycles, (on
THAE-THAES); circulation or service pump; electronic antifreeze
protection; the functions controlling the working intervention modes of
each device constituting the appliance.
• complete protection of the unit, including the possibility of switching
off the machine and the display of all triggered alarms;
• display of the programmed set points, the inlet/outlet water
temperature and alarms. LED display of working devices, cooling or
heat pump mode function or defrosting in progress (on THAE-THAES);
• self-diagnosis with continuous verification of unit working
conditions.
○ Advanced functions:
• pre-arrangement for serial connection with RS 485 output for
interconnection with building automation systems, centralised systems
and supervision networks.
• computer assisted machine tests.
II.1.2
WORKING RESTRICTIONS
For a description of working restrictions, refer to the relative chapters in
SECTION I: USER (Chapters I.1.3.1 and I.1.3.2).
II.1.3 FACTORY FITTED ACCESSORIES
STANDARD VERSION:
DS15 – Desuperheater.
RC50 – Partial heat regenerator.
RC100 – Total heat regenerator.
FI10 – Proportional electronic device for continuous adjustment of fan
rotation speed depending on the condensation pressure, up to an
external air temperature of -10°C in cooling function mode.
TRD - Thermostat with display showing the regenerator or
desuperheater outlet water temperature with the possibility of
programming the activation set point of an external adjustment device.
Documentation regarding factory fitted accessories is enclosed with the
documentation of the accessorised units.
VERSION WITH INTEGRATED PUMP ASSEMBLY
DS15 (*) - Desuperheater.
RC50 (*) - Partial heat regenerator.
RC100 (*) - Total heat regenerator.
FI10 - Proportional electronic device for continuous adjustment of fan
rotation speed depending on the condensation pressure, up to an
external air temperature of -10°C in cooling function mode.
TRD (*) - Thermostat with display showing the regenerator or
desuperheater outlet water temperature with the possibility of
programming the activation set point of an external adjustment device.
Documentation regarding factory fitted accessories is enclosed with the
documentation of the accessorised units.
(*) units 230÷260 only.
VERSION WITH MOTOR-DRIVEN PUMP
DS15 – Desuperheater.
RC50 – Partial heat regenerator.
RC100 – Total heat regenerator.
FI10 – Proportional electronic device for continuous adjustment of fan
rotation speed depending on the condensation pressure, up to an
external air temperature of -10°C in cooling function mode.
TRD - Thermostat with display showing the regenerator or
desuperheater outlet water temperature with the possibility of
programming the activation set point of an external adjustment device.
Documentation regarding factory fitted accessories is enclosed with the
documentation of the accessorised units.
II.1.4 ACCESSORIES SUPPLIED SEPARATELY
IMPORTANT!
Only use original spare parts and accessories.
RHOSS S.p.a. shall not be held liable for damage
caused by tampering or work carried out by
unauthorised personnel or malfunctions caused by
the use of non-original spare parts or accessories.
KSA - Vibration-damping rubber supports.
KTR – Remote control keyboard with exactly the same functions as the
keyboard on the appliance.
KIS - RS 485 serial interface for interconnection with building
automation systems, centralised systems and supervision networks.
KRP – Protective mesh.
KGM – High and low pressure gauges for every circuit complete with
capillaries.
KCH - RS 232 hardware key for connection to supervision systems, to
be combined with one or more KIS serial interface modules if the units
are managed on a centralised basis.
Documentation regarding accessories supplied separately is enclosed
with the documentation of the accessorised units.
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