RHOSS TCHEY 115 Instrucciones De Uso página 31

II SECTION II: INSTALLATION AND
MAINTENANCE
II.1 DESCRIPTION OF THE UNI T
II.1.1 STRUCTURAL FEATURES
○ Structure in gal vanised and RAL 9018 painted s teel plate, c oated
on the i nside with sound-abs orbing panelling.
○ Scroll-type hermetic rotary compress ors complete with internal
thermal protecti on and guard resistances acti vated automatic ally when
the unit s tops (as long as the unit remains power ed electricall y).
○ Plate type heat-exc hangers in stainless s teel with clos ed-cell
expanded pol yur ethane foam ins ulation compl ete with anti-freez e
elements .
○ Differential pressur e s witch on the primary heat exchanger for
TCHEY models, on the pri mar y heat exc hanger and on the rej ection
device for the THHEY models to protect the unit from any interrupti ons
of the water flow.
○ Male threaded hydraulic connec tions .
○ Refrigerant circuit realised with pipes welded using val uabl e alloys .
Compl ete with: reversing valve (THHEY), filter drier, thermostatic val ve
(n° 2 for THHEY models), non-return valves (THHEY), load
connections, s afety press ure s witch on the high pressure side with
manual r earm, press ure s witch on the low pressure side with automatic
rearm, from model 122 to 240 val ve/and s afety, liquid indic ator and
isolation of the intake line.
○ Rejection devic e circuit realised with pipes wel ded using val uable
alloys . Complete with: manual air vent and drain val ve.
○ Primar y circuit realised with pipes welded using val uabl e alloys .
Compl ete with: manual air vent and drain val ves .
○ Unit with IP21 protection rating.

compatibl e with Adapti veF unc tion Plus.
○ The unit is c omplete with the R410A refrigerant charge.
II.1.2 SET-UPS AVAILABLE
Standard:
Set-up without pump and without hydraulic acc essories.
Pump:
P1 – Set-up with pump.
P2 – Set-up with pump with increas ed static pressur e.
PS1 – Set-up with pump r egulated with sourc e side phase cut (to use
with geothermal probes on TCHEY and THHEY and Dr y Cooler on
TCHEY) to control the c ondensati on temperature in the s ummer
functi oning mode.
The set-ups P1 and P2 also envision in the primar y circuit: expansi on
tank, safety valve (3 Barg), water gauge, filling val ve, drain val ve and
manual bleed valves. T he PS1 set- up is c omplete with drain val ves and
manual bleed valves.
II.1.3 PUMP VERSIONS
The TCHEYP and THHEYP include an integrated circul ating pump in
the primar y side insi de the machine.
II.1.4 FEATURES OF THE ELECTRIC CONTROL
BOARD
○ Electric control board accessibl e by openi ng the front panel,
conforming to current IEC nor ms, can be opened and closed with a
suitabl e tool.
○ Compl ete with:
 electric wiring set-up for the power s uppl y voltage ( 400V-3ph+N-
50Hz);
 auxiliary power suppl y 230V-1ph-N-50Hz drawn from the mai n
power suppl y;
 general isolator, c omplete with door interloc ki ng isolator;
 automatic compr essor protecti on s witc h;
 protecti on fuse for auxiliar y circuit;
 compressor power contactor;
 Automatic s witch for pump pr otecti on (three-phas e pump onl y);
 Pump power c ontactor (three-phas e pump onl y);
 remote unit c ontrol.
○ Programmable circuit board with microproc essor, c ontrolled by the
keyboard ins erted in the machine.
SECTION II: INST ALL ATION AND MAINTEN ANCE
○ This circuit board perfor ms the following functions:
 Regulation and management of the outl et water temperature s et-
points ; of c ycle reversal (THCEY); of the safety timer del ays; of the
circulating pump; of the compr essor and s ystem pump hour-run meter;
of the electronic anti-freeze protection whic h cuts in automaticall y when
the mac hine is s witched off; and of the func tions which c ontrol the
operations of the indi vi dual parts making up the machi ne;
 complete protection of the unit, automatic emergenc y s hutdown and
display of the alarms which have been ac tivated;
 phas es sequenc e monitor for compress or protection;
 unit protec tion against l ow or high phase power suppl y voltage;
 visual indic ation of the pr ogrammed set-points vi a the display; of the
in/out water temperature via the displ ay; of the alarms via the display;
and of c ooling/heat-pump operating mode vi a displ ay;
 self-diagnosis with continuous monitoring of the func tioni ng of the
unit;
 user interface menu;
 alarm c ode and descripti on;
 alarm histor y management (menu protected by manufactur er
pass word).
○ The followi ng is memorized for each alarm:
 date and time of inter venti on (if the KSC accessor y is present);
 alarm c ode and descripti on;
 inlet/outlet water temperatur es when the alar m intervened;
 alarm delay time from the s witc h-on of the connected device;
 compressor status at moment of alarm;
○ Advanced functions:
 3-way val ve management for domestic hot water.
 configured for s erial connec tion (KR S485, KFTT10, KRS232 and
KUSB acc essor y);
 user interface menu;
 alarm c ode and descripti on;
 alarm history management ( menu protected by manufacturer
password).
○ The followi ng is memorized for each alarm:
 date and time of inter venti on (if the KSC accessor y is present);
 alarm c ode and descripti on;
 inlet/outlet water temperatur es when the alar m intervened;
 alarm delay time from the s witc h-on of the connected device;
 compressor status at moment of alarm;
○ Advanced functions:
 configured for s erial connec tion (KR S232 and KUSB acc essor y);
 possibility to have a digital input for remote management of double
set-point (contact RHOSS pre-s ales );
 possibility to have an analogue input for the scrolling set-point via a 4-
20mA remote signal (contact RHOSS pre-sales );
 configured for management of ti me bands and operation parameters
with the possibility of dail y/weekl y operating programs (KSC acc essor y);
 chec k-up and monitoring of scheduled maintenance s tatus;
 inspecti on of the units assisted by computer;
 self-diagnosis with continuous monitoring of the func tioni ng of the
unit.
○ Set-point regulation via the Ad aptive Fun ction Plus with two
options:
 fixed s et-poi nt (Precision options);
 scrolling set-point (Ec onomy option).
II.2 SPARE PARTS AND ACCESSORIES
IMPORTANT !
Only use origin al spare parts and accessories.
RHOSS S.p.a. shall not be held liab le for damage
caused b y tampering or work carr ied out b y
unauthorised per sonnel or malfunctions cau sed b y
the use of non-original spar e part s or accessories.
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