LRi High efficiency air to water heat pumps with INVERTER

A++

-20°C

+43°C i

LR +60°C

C.O.P.≥5,1 Vtee

The LRi series of high efficiency heat pumps has been VERSIONS specifically designed for use with radiant floor heating HH . systems or those applications where it is necessary to have Heating only RV Reversible heating/cooling. maximum efficiency when heating. LS Low noise. They have been optimized on heating mode, are able to P2U 2 pipe systems without domestic hot water production. produce water up to 60°C and can operate down to -20°C P2S 2 pipe systems with domestic hot water production by ambient temperature. external 3 way valve. LZi units can produce domestic hot water through the activation of an external 3-way-valve. All models are supplied as standard with a for defrost and cold water production in summer.

ACCESSORIES

E1NT Hydraulic kit with inverter pump. KAVG Rubber anti-vibration mountings. PCRL Remote control panel. RAES User and recovery kit. VECE E.C. fans.

16 LRi/HH - Only Heating Version 10 15 Energy Class in low temperature - According to EU reg. 811/2013 A++ A++ Heating capacity (EN14511) (1) kW 10,0 15,1 Total input power (EN14511) (1) kW 2,3 3,6 COP (EN14511) (1) W/W 4,35 4,23 Power supply V/Ph/Hz 230/1/50 230/1/50 Max input current standard unit A 17,5 25,3 Peak current standard unit A 17,1 24,8 Max air flow in heating mode m3/h 5500 9000 Fans n° 1 2 /Circuits n°/n° 1/1 1/1 Max sound power level in heating mode (3) dB (A) 66 68

Max sound pressure level in heating mode (4) dB (A) 38 40 i Nominal waterflow l/h 1720 2600 LR Available static pressure circulating pump kPa 40 75

LRi/RV - Reversible Version 10 15 Energy Class in low temperature - According to EU reg. 811/2013 A++ A++ Heating capacity (EN14511) (1) kW 10,0 15,1 Total input power (EN14511) (1) kW 2,3 3,6 COP (EN14511) (1) W/W 4,35 4,23 Cooling capacity (EN14511) (2) kW 7,8 13,0 Total input power (EN14511)(2) kW 3,10 4,19 EER (EN14511) (2) W/W 2,52 3,1 Power supply V/Ph/Hz 230/1/50 230/1/50 Max input current standard unit A 17,5 25,3 Peak current standard unit A 17,1 24,8 Max air flow in heating mode m3/h 5500 9000 Max air flow in cooling mode m3/h 5500 9000 Fans n° 1 2 Compressors/Circuits n°/n° 1/1 1/1 Max sound power level in heating mode (3) dB (A) 66 68 Max sound pressure level in heating mode (4) dB (A) 38 40 Max sound power level in cooling mode (3) dB (A) 66 68 Max sound pressure level in cooling mode (4) dB (A) 38 40 Nominal waterflow l/h 1720 2600 Available static pressure circulating pump kPa 40 75

Performances refer to the following conditions: (3) Sound power level in accordance with ISO 9614. (1) Heating: Ambient temperature 7°C DB, 6°C WB, water temperature 30/35°C. (4) Sound pressure level at 10 mt from the unit in free field conditions direction factor Q=2, calculated in (2) Cooling: ambient temperature 35°C, water temperature 23/18°C. accordance with ISO 9614.

OPERATION LIMITS

(All versions) (RV versions Only) 70 30 Heating mode 60 25

20 Cooling mode 50 15 40 10 30

Water temp. production (°C) Water temp. production (°C) Water 5

20 0 -20 -10 0 10 20 30 40 50 10 15 20 25 30 35 40 45 50 Ambient temperature (°C) Ambient temperature (°C)

17 www.hidros.eu FRAME Each exchanger is fitted with a temperature switch, a sequence relay that disables the All units are made from hot-galvanised she- sensor on the discharge water side for anti- power supply in the event that the phase et steel, painted with polyurethane powder freeze protection. sequence is incorrect (scroll compressors enamel and stoved at 180°C to provide can be damaged if they rotate in the wrong maximum protection against corrosion. The E.C. FANS direction), thermal overloads (protection of frame is self-supporting with removable pa- The fans are axial type with high perform- pumps and fans), compressor fuses, con- nels. ance aerofoil blades, the impeller is made trol circuit automatic breakers, compressor of galvanized sheet galvanized, painted contactors, contactors and pump con- CIRCUIT with polyurethane powder, to ensure a tactors. The terminal board has volt free The refrigerant circuit is made by using high protection in aggressive and severe contacts for remote ON-OFF, Summer/ components from leading international environments. The impeller mounted di- winter change over (heat pumps only) and companies in accordance with ISO 97/23 rectly on DC-brushless motor with external general alarm. for the of braze welding processes. rotor, to ensure ideal cooling of the engine

i The refrigerant used is R410A. and a total absence of losses of the trans- CONTROL AND PROTECTION DEVICES The refrigerant circuit includes: sight glass, mission. Impeller dynamically balanced in All units are supplied with the following LR filter drier, electronic expansion valve, class 6.3 according to ISO 1940. Engine controls and protections: user water return 4-way valve, check valves, liquid recei- brushlesss-DC permanent magnet high temperature sensor, antifreeze protection ver, Schrader valves for maintenance and efficiency electronic switching unit (driver) temperature sensor installed on users wa- control, a safety device (according to PED separate. Continuous speed variation with ter output, high pressure manual reset, low regulation). voltage signal 0-10 V, PFC integrated pro- pressure automatic reset, compressor ther- tection “burn out” (excessive drop in volt- mal protection, air fan, thermal protection, COMPRESSORS age), fully IP54 driver, serial interface with pressure transducer (used to optimize the The compressors are high-efficiency scroll Modbus RTU communication protocol. defrost cycle and to adjust the fan speed type, variable-speed modulation capability The maximum rotation speed of the motor depending on ambient conditions), flow through DC inverter, supplied with a special is 600 rpm to guarantee an extremely low switch. All units are also fitted with a tempe- design that increases the efficiency of the re- noise level. rature probe sensor with “Energy Saving” frigeration cycle under conditions of very low function, supplied in a separate plastic box, ambient temperature. The compressors are MICROPROCESSORS which can be used to stop the pump use equipped with an innovative electric motor All units are supplied as standard with mi- during periods of stand-by, when the water permanent magnet brushless DC inverter- croprocessor controls. The microprocessor temperature reaches the set point. Doing driven, high-efficiency, are all equipped with controls the following functions: control this the power consumption of the unit is electrical resistance and thermal overload of the water temperature, antifreeze pro- strongly reduced. protection. tection, compressor timing, compressor automatic starting sequence (For multiple SOURCE HEAT EXCHANGER compressors), alarm reset. The control The source heat exchanger is made from panel is supplied with display showing all 3/8” copper pipes and 0,1mm thick alumi- operational icons. The microprocessor is nium fins with the tubes being mechanically set for automatic defrost (when operating expanded into the aluminium fins in order in severe ambient conditions) and for sum- to maximise . Furthermore, the mer/ winter change over. design guarantees a low air side pressure The control also manages the anti-legionel- drop thus enabling the use of low rotation la program, the integration with other hea- speed (and hence low noise) fans. ting sources (electric heaters, , solar panels etc), the operation of a three port USER HEAT EXCHANGERS modulating valve (for diverting to DHW or The user heat exchanger is a braze welded, heating) and both the heating circuit pump plate type heat exchanger, manufactured and the domestic hot water circuit pump. from AISI 316 stainless steel. Utilisation of this type of exchanger results in a massive ELECTRIC ENCLOSURE reduction of the refrigerant charge of the The enclosure is manufactured in order to unit compared to a traditional shell-in-tube comply with the requirements of the elec- type. A further advantage is a reduction in tromagnetic compatibility standards CEE the overall dimensions of the unit. 73/23 and 89/336. Access to the enclosu- The exchangers are factory insulated with re is achieved by removing the front panel flexible close cell material and can be fit- of the unit. The following components are ted with an antifreeze heater (accessory). supplied as standard on all units: main

18 LRi P2S LRi P2U i

LRi Options Code 10 15 LR Compressor automatic switch Flow switch User water strainer Evap/condens pressure control by transducer and fan speed control dccF Fresh air temperature probe for set-point compensation SOnd DHW Probe Specific software for operation priorities Remote ON/OFF digital input Summer/Winter digital input Floating frame technology Condensate discharge drip tray with antifreeze heater BRCA Electronic Expansion Valve vtee Electronic Soft starter dSSe Remote control panel PCRL Water strainer E1NT Hydraulic kit (pump only) E1NT Rubber anti-vibration mountings. KAVG Antifreeze kit rAeS E.C. fans vece

Standard, Optional, – Not available.

C C B B

A A

LRi 10 LRi 15

Mod. A (mm) B (mm) C (mm) Kg 10 890 875 360 75 15 1420 1025 360 120

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