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RG66012163 - Rev 00
STRUCTURE
Painted galvanised sheet steel structure (RAL9002) for an attractive look and
effective resistance to corrosive agents�
Fastening devices are made of non-oxidizable materials, or carbon steel that
has undergone surface-passivating treatments�
The compressor compartment is completely sealed and may be accessed on
3 sides thanks to easy-to-remove panels that greatly simplify maintenance
and/or inspection�
Sound insulation, available on request, can further reduce the noise emissions
of the unit�
CUSTOMISED HYDRAULIC KIT
- High head pump made entirely of stainless steel, already configured for
use with mixtures of water and ethylene glycol up to 35% and provided
with internal thermal protection�
It is housed in the compressor compartment and is easy to reach thanks
to the removable perimeter panels�
- Expansion tank�
- Safety valve�
- Filling cock (included)�
- Automatic vent valve�
- Water differential pressure switch and outlet water temperature probe
with anti-freeze thermostat function�
- Mechanical Y filter supplied as a standard feature on all models to protect
the evaporator (included)�
COOLING CIRCUIT
- Scroll-type compressor (rotary up to 7 kW) housed in a compartment
that can be sound insulated�
- Brazed plate heat exchangers made of STAINLESS STEEL and optimised
for use with R410A�
- Finned block condenser with 8 mm copper piping and aluminium fins,
characterised by ample heat exchange surfaces�
- Dehydrating filter�
- Flow indicator with humidity indicator�
- Thermostatic valve with external equalisation and integrated MOP
function�
- Cycle-reversing valve (MPED H)�
- Single-acting valves (MPED H)�
- Liquid receiver (MPED H)
- High and low pressure switches�
- Safety valve�
- Schrader valves for checks and/or maintenance�
- Refrigerant pressure gauges (optional)
VENTILATION SECTION
Statically and dynamically balanced centrifugal fans with backward-curved
blades, directly mounted on the electric motor�
All units are equipped with phase-cut speed regulator controlled by the
ratiometric pressure probe or by means of EC fans�
The ventilation compartment is completely insulated with anti-condensation
material and is separated from the compressor/electrical system compartment
for inspection purposes when the unit is working (without interfering with the
finned block exchanger)
The absence of belt drive and the frontally removable fan considerably reduce
maintenance work�
The use of finned block heat exchangers with 8mm diameter pipes reduces
pressure drops on the air side, thus significantly improving the noise levels
of the units�
FINNED BLOCK HEAT EXCHANGER
Made of 8mm diameter copper pipes and aluminium fins, generously sized�
The special engineering of the heat exchangers allows defrost cycles to be
carried out at maximum speed in the models with heat pump operation, which
brings clear benefits in terms of the integrated efficiency of the whole cycle�
ELECTRONIC MICROPROCESSOR CONTROL
The electronic control enables the complete control of the MPED unit� It can
be easily accessed through a polycarbonate flap with IP65 protection rating�
The self-adaptive logic enables the unit to operate even in systems where the
water content is low, without the use of an inertial water storage reservoir� By
reading the outdoor air temperature, it can automatically change the setpoint
to adapt it to the outdoor load conditions or keep the unit running even in the
harshest winter conditions�
The basic controller comes complete with the MODBUS protocol and enables
an immediate connection to ERGO networks�
Main functions
- Control over the temperature of water entering the evaporator�
- Management of the defrosting function (MPED-H)
- Control of fan speed (optional)
- Complete alarm management�
- Dynamic control of the setpoint according to the outdoor air temperature�
- Can be connected to an RS485 serial line for supervisory / teleassistance
operation;
- Option of connecting a remote terminal that duplicates the control
functions�
Devices controlled:
- Compressor
- Fans
- Cycle-reversing valve (MPED-H)�
- Water circulation pump�
- Antifreeze heating elements (optional)
- Alarm signalling relay
On request, it is possible to install the advanced controller whose functions
extend to:
- LAN networks
- Smart Defrost System
ELECTRIC CONTROL BOARD
The electric control board is constructed and wired in accordance with EEC
Directive 73/23, Directive 89/336 on electromagnetic compatibility and
related standards� Made of steel sheet, it is also protected by the enclosing
panels of the machine�
OPTIONS
Incorporable hydronic kits
Condensation control
Low noise execution
Refrigerant pressure gauges
Antifreeze heating elements on the water circuit
Electronic thermostatic valve
Heat recovery 25% (chiller)
Special exchangers (hydrophilic treatment, copper-copper, cataphoresis,
anti-corrosion)
Air flow rate setting system
ACCESSORIES AVAILABLE
Remote control boards
Base vibration dampers
Metal grilles to protect exchangers
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CONSTRUCTIVE FEATURES
