RHOSS TCHEY 105 Mode D'emploi page 28

II SECTION II: INSTALLATION AND
MAINTENANCE
II.1 UNIT DESCRIP TION
II.1.1 CONSTRUCTION FEATURES
○ Structure in gal vanised and RAL 9018 painted s teel plate, c oated on
the i nside with sound-abs orbing material.
○ Scroll-type hermetic rotary compress ors complete with internal
thermal protecti on.
○ Brazed plate heat-exchangers in s tainl ess steel with cl osed-c ell
expanded pol yur ethane rubber ins ulati on c omplete with anti-freeze
resistances .
○ Differential pressur e s witch on mai n heat exc hanger for models
TCHEY; on heat exchanger and on rejecti on device for models THHEY.
○ Male threaded hydraulic connec tions .
○ Refrigerant circuit realized with mild c opper tubes (EN 12735-1-2)
and welded with silver alloy. C omplete with: reversing val ve (THHEY),
filter drier, thermostatic val ve ( 2 for models THHEY), non-retur n val ves
(THHEY), high pressure switc h.
○ Rejection circuit realized with mild c opper tube (EN 12735-1-2) and
welded with sil ver alloy. Complete with: manual air vent and drain val ve.
○ Primar y circuit realized with mild c opper tube (EN 12735-1-2) and
welded with sil ver alloy. Complete with: manual air vent, drain valves,
safety val ves ( 6 Barg), gauge, expansi on tank calculated for 28l for
models 105-107 and 56l for models 109-112 e filling val ve on rej ection
device si de to primar y circuit.
○ Unit with IP21 level of protec tion.
○ compati ble with AdaptiveFunction Plus.
○ The unit is c omplete with the R410A refrigerant charge.
II.1.2 PUMP VERSIONS
The TCHEYP and THHEYP include i n the primar y side am i ntegrated
circulating pump i nside the mac hine.
II.1.3 ELECTRIC PANEL FEATURES
○ Electrical board accessibl e by openi ng the front panel, confor ming
with c urrent IEC norms , can be opened and closed with a suitabl e tool.
○ Compl ete with:
• electrical wiring set up for power suppl y voltage (230-1ph-50Hz for
single-phase models 105-107-109-112, 400V-3ph+N-50Hz for tri-phas e
models 107-109 112);
• auxiliary power suppl y 230V-1ph-50Hz drawn fr om the main power
suppl y;
• general isolator, c omplete with door interloc ki ng isolator;
• Automatic compress or protection s witch;
• protecti on fuse for auxiliar y circuit;
•
compressor power c ontactor;
• remote unit c ontrol.
○ Programmable elec tronic boar d with microproc essor, c ontrolled by
the keyboard i nserted in the mac hine.
○ This electronic board performs the following functi ons:
•
Regulation and management of the outlet 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 e sequenc e monitor to protect the compress or (for three-phas e
models onl y); "
• unit protection against low or high phase power suppl y voltage;
• visual indic ation of the pr ogrammed set poi nts via the displ ay; 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).
SECTION II: INST ALL ATION AND MAINTEN ANCE
○ 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:
• the water s hutoff s olenoid c ompletel y clos es the hydraulic circuit on
the s upply side when the c ompressors are s witched off, with delays set
on the electronic board (when using well water or mains water);
• configured for s erial connec tion (KR S485, KFTT10, KRS232 and
KUSB acc essor y);
• possibility to have a digital input for remote management of double
set point (c ontact RHOSS pre-sal es );
• possibility to have an analogue input for the scrolling set-point via a
4-20mA remote signal (c ontact RHOSS pre-s ales );
• configured for management of ti me bands and oper ation
parameters with the possi bility of dail y/weekly operati ng programs (KSC
accessor y);
• chec k-up and monitoring of scheduled maintenance s tatus;
• testing of the units assisted by c omputer;
• 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 opti ons);
• scrolling set-point (Economy opti on).
II.2 SPARE PARTS AND ACCESSORIES
IMPORTANT !
Only use origin al spare parts and accessories.
RHOSS S.p.A. shall not be h eld liable for damag e
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.
II.2.1 FACTORY FITTED ACCESSORIES
VP – Pressos tatic val ve onl y for models TCHEY that modulates the
water flow rate to the c ondenser, mai ntai ning the condensation
pressure c onstant. This is i n general us eful when the mac hine is r un
with a s et point that is greatl y i nferior than the design one without
adjusti ng, for the actual amount of heat to be rejected, the water flow
rate and/or the c ondenser inlet water temperature; when the well or city
water coming into the c ondenser has a temperature of less than 15°C
(the temperature differ ential ∆T for city water through the condenser is
inclusive in the range12 ÷ 18°C); when the water c omi ng into the
condens er is less than 25°C with ∆T l ess than 12°C (the temperature
differential ∆T for water through the c ondens er is inclusi ve in the r ange
5 ÷ 15°C) the temperatur e of condenser outl et water must not however
exc eed 52°C (see operating li m i ts).
VPS – Press ostatic val ve and s olenoid hydraulic bypass val ve onl y for
models THHEY. Hydraulic s olenoid valve ins talled hydraulicall y parallel
to the pressostatic valve (see acc essor y VP). In chiller operating mode,
the s olenoid val ve is clos ed. This allows the water to flow through the
pressostatic val ve which will then perform its function of flow rate
adjustment. In heat pump operating mode it is completel y opened. This
offsets the functi on of the press ostatic val ve.
HPH – The HPH acc essor y c an be i nstalled onl y on versions without a
circulating pump ( both on user and r ejection side) and without the VP-
VPS access ory. The acc essor y consists of the s ole adjus tment logic for
the management of the cold unit (TCHEY) as the hot water producer, by
inverting the hydraulic circuit. All the necess ary components and pi pes
to invert the hydraulic c ycle are to be set up by the installer. Refer to the
hydraulic layouts at the end of the document.
HPH-CC – The HPH-CC access ory includes the H PH and the VPS to
manage c ondens ation control in summer mode and the bypass vi a the
solenoid in winter mode. It c an onl y be i nstalled in the versions with no
circulation pump ( utility side as well as dis posal unit side). T he
accessor y c onsists of the sole adj ustment logic for the management of
the c old unit (TCHEY) as the hot water producer, by inverting the
hydraulic circuit. All the necess ary components and pipes to i nvert the
hydraulic c ycle are to be s et up by the installer. Refer to the hydr aulic
layouts at the end of the document.
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