DHW Heat pumps series COMPACT CRE

COMPACT heat pumps use the air’s thermal energy for the production of sanitary warm water in the most effective and profitable way, with average C.O.P. > 3.
The energetic advantage of the COMPACT heat pumps allows to safeguard the environment, using above all the energy of the solar radiation.
To complete the advantages of this greatly ecological and economic system, there are the easiness of installation, the silent and reliable functioning and the very small need of maintenance.

The principle of functioning is the following:
• The refrigerating fluid, taking heat from the low temperature source (the external air), changes its state in the evaporator.
• The compressor, that is the beating heart of the system, makes the energy level of the taken heat higher: in fact, the refrigerating fluid reaches temperatures near to 90°C by increasing its pressure.
• In the condenser it is possible to give thermal energy to the sanitary water, warming it until 60°C. Thanks to insulating shell in polyurethane 50 mm thick, the accumulation (200, 300 litres) allows to store up and keep for a long time the heat.
• Crossing in the end the expansion element, the fluid returns to low pressure, cools down and it is available to "load" other "ecological" heat again from external air. It is also possible to employ auxiliary sources, with additional exchangers connected to boilers or solar panels .The standard unit adopts a 1.5 kW single-phase electrical resistance. The boiler is made of carbon steel, with inside treatment of two layers SMALGLASS, magnesium-anode and external coating in plastic material.

• Steel tank with two layers vitrification respecting DIN 4753-3 and UNI 10025.
• Condenser wrapped externally to the boiler free from fouling and gas-water contamination.
• Auxiliary coil to be used in combination with boilers or solar panels.
• NTC integrated probe for the control of water temperature.
• Outdoor temperature sensor for automatic insertion of the resistance with temperature not favourable to the heat pump.
• Anti-corrosion magnesium anode
• Electronic anode (optional)
• Hydraulic connections on the back side
• Thermal insulation with injected polyurethane (PU) with high thickness
• RAL 9006 grey plastic external coating
• Adjustable supports
• Ecological refrigerant R134A
• Single phase 1,5 kW 230V electrical heater
• High pressure safety device
• Hermetic rotatif compressor
• Variable speed radial fan
• Support handles for a safe and easy transport
• Condensate drain integrated in the unit
• Electronic management
- User interface for setting the operative mode and set the parameters with different levels of accessibility protected by password
- Self-diagnosis and display of alarms (high pressure, high temperature water, disconnect probes)
- Operating hours record
- Set-point adjustment for water operation Automatic and/or Manual
- Outdoor air temperature display
- Modulating fan speed control as a function of air and the water temperature
- Dynamic set point function
- Minimum time intervals management between successive starts of the compressor
- Keyboard parameters setting
- Remote ON/OFF for complete unit (Timer)
- Remote ON/OFF for electrical heater - Electrical heater management in manual or automatic integration mode with low outdoor temperature
- External boiler management as an alternative to the electrical heater
- Legionella cycle management
- Integrated power supply for electronic anode
- Defrost management by temperature sensor or transducer (expansion card)
- Motorized damper management (expansion card)
- Water pump management for intermediate exchanger versions (expansion card)

Models available:
- CRE-PEL model, standard with heat pump and electrical resistance as sources of heating
- CRE-PWW model, with auxiliary coil, for utilization in combination with boiler or solar panels
- CRE-PEP model, with double auxiliary coil, to use three energetic sources at the same time