Structural Features; Section Ii :: Installation And Maintenance; Available Installations; Electrical Control Board - RHOSS TCAEBY 269 Mode D'emploi

II.

SECTION II :: INSTALLATION AND MAINTENANCE

STRUCTURAL FEATURES

Load-bearing structure and panels in galvanised and RAL 9018
painted sheet metal; galvanised steel sheet metal base.
The structure consists of two sections:
• technical compartment that houses the compressors, electrical
panel and main components of the cooling circuit;
• aeraulic circuit to house the heat exchange coils and motor-driven
fans
Scroll rotary hermetic compressors complete with internal thermal
protection and resistance in the crankcase that is automatically acti-
vated when the unit stops (as long as the unit is electrically powered).
Duly insulated stainless steel brazed plate heat exchanger on the
water circuit side (tube and shell heat exchanger - STE option).
Heat exchanger on air circuit side comprised of copper tubes and
Axial electric fans with external rotor, equipped with internal ther-
mal protection and complete with protection nets set up in single row
or double row depending on the models.
The S-Silenced and Q-Super-silenced versions are standard and
the proportional electronic device (FI10) for pressure and continu-
ous fan rotation speed adjustment up to an outdoor air temperature
of -10°C in chiller mode and up to an outdoor temperature of 40°C in
heat pump mode.
Victaulic-type hydraulic connections.
Differential pressure switch that protect the unit from any water
Cooling circuit built with annealed copper tube (EN 12735-1-2)
sure switch on the high pressure side with manual reset, LP and HP
indicator, insulation of the inlet line, thermostatic expansion valve or
electronic expansion valve (accessory), cycle inversion valve and
liquid receiver, non-return valve, gas separator on intake to the com-
pressors and solenoid valve on the liquid line (for THAETY-THAESY-
THAEQY).
Unit with protection rating IP24.
Control with AdaptiveFunction Plus function.
Versions
B Basic version (TCAEBY).
S The silenced version is complete with soundproofed
compressor compartment and low fan speed (TCAESY-
THAESY). The fan speed is automatically increased when
T
tion (TCAETY-THAETY).
Q Super-silenced version complete with soundproofed
compressor compartment, super reduced speed fans and
oversized condensing section (TCAEQY-THAEQY). The
fan speed is automatically increased when the external
Section II :: Installation and maintenance
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Available Installations

Standard:
Installation without pump and without water buffer tank
In this case it is compulsory to use the pump cables contained in
the unit's terminal block to manage the external pump provided by
details.
Pump (main circuit):
P1 – Installation with pump.
P2 – Installation with increased static pressure pump.
DP1 – Installation with double pump, including an automatically acti-
vated pump in stand-by.
DP2 – Installation with increased static pressure double pump, includ-
ing an automatically activated pump in stand-by.
Pump ("RC100" recovery circuit side):
PR1 – Installation with pump.
PR2 – Installation with increased static pressure pump.
DPR1 – Installation with double pump, including an automatically
activated pump in stand-by.
DPR2 – Installation with increased static pressure double pump,
including an automatically activated pump in stand-by.
In the single pump version, the unit is complete with an
intake tap for each pump.
Tank & Pump (main circuit):
ASP1 – Installation with pump and water buffer tank.
ASP2 – Installation with increased static pressure pump and water
buffer tank.
ASDP1 – Installation with double pump, including an automatically
activated pump in stand-by and storage.
ASDP2 – Installation with increased static pressure double pump,
including an automatically activated pump in stand-by and storage.
In addition to that supplied with the Pump accessory, the unit also
expansion tank, safety valve, electrical resistance connection.

ELECTRICAL CONTROL BOARD

Electrical panel can be accessed by opening the front panel, in
Complete with:
• electrical cables prepared for 400-3ph-50Hz power supply voltage;
• auxiliary circuit power supply 230V-1ph-50Hz drawn from the main
power supply;
• power supply isolator master switch, complete with safety door
locking device;
• automatic circuit breaker protection for compressors and motor-
driven fans;
• auxiliary circuit protection fuse;
• compressor power contactor;
• machine remote controls: ON/OFF summer-winter switch;
• machine remote controls: compressor operation light and main
lock light.
• compressor protection phases sequence monitoring;
Programmable microprocessor electronic board handled by the
keyboard inserted in the machine.
This electronic board performs the following functions:
• regulation and control of the unit outlet water temperature settings;
of cycle inversion (THAETY-THAESY-THAEQY); of the safety timers;
of the circulation pump; of the system compressor and pump hour-run
meter; of the defrosting cycles; of the electronic antifreeze protection
that is automatically activated when the unit is off; of the functions that
control operations of the individual parts making up the unit;
• total protection of the unit and its switching off and display of all
individual alarms triggered;
• protection of the unit low or high power supply voltage on the phases;
EN
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