AIWA EVI S BLOCK Block Split system

Small size heat pump air - water

Small size split air - water split heat pump with scroll compressor in internal unit and external unit. Available in combination with DHW boiler tank or buffer tank of 80 liter. With stable frame construction and flexible outputs. Double high-absorption suspension with sylomer pads and adjustable base plates ensure low noise and vibration levels of the Scroll compressor.

Stainless steel plate heat exchanger (1,4401) for heating circuit. Free-hanging Al-Cu V-shaped heat exchanger with water resistant coating in the outdoor unit. Electrical switchboard with integrated safety elements and equithermal controller of the heat pump is located below the upper lid in the indoor unit. Quiet, low-speed EC Ziehl - Abegg with bionic fins. Reversible defrosting optimized via APS system with subcooling of liquid refrigerant. With electronic starter via built-in soft starter and electronic expansion control with autoadaptivity.

Frame construction with a massive base plate on adjustable legs. Covering the epoxy-coated unit. The multi-layer sound insulation and vibration-eliminating profiles are glued from the inside of the cover. Equithermal, digital control of the heat pump with integrated cooling control function. For controlling one heating or cooling circuit with mixing unit, for one heating or cooling circuit without a mixing unit. Temperature regulation for DHW storage tank and control of electrical backup heating elementnt inside the heat pump. Simple extension of control up to 3 heating / cooling circuits via expansion modules or up to 16 circuits via system controllers. The standard version also includes solar control as well as the possibility of cascading up to 16 devices.

Full-text control menu with features dependent on user instructions, information texts and status output signal. Diagnostic system with record history of operation. External temperature sensor, hotgas sensor, liquid refrigerant temperature sensor, heat pump flow and return temperature sensor as well as source output sensor, source return sensor, and hot water sensor.

Build-in condenser pump, backup heating element of 6 kW as well as 3 way switching valve for DHW preparation in packaging.

Possibility to integrate with 200 liter DHW tank and 80 liter buffer tank. Optionally available with ModBus module as well WebControl control and monitoring via the Internet.


Build-in condenser pump, backup heating element of 6 kW as well as 3 way switching valve for DHW preparation in packaging.

Heat pump type AiWa 05 EVI Block AiWa 08 EVI Block AiWa 11 EVI Block
Article nr. WA001491 WA001492 WA001493
Refrigerant R410a R410a R410a
Heating capacity [ kW ]
A2/W35 5.32 8.10 11.05
A7/W35 6.21 9.45 12.89
A-2/W35 4.92 7.5 10.23
A2/W55 5.42 8.25 11.26
Input [ kW ]
A2/W35 1.24 1.98 2.70
Performance COP
A2/W35 4.3 4.1 4.1
Parameter of heat rejection
Maximal flow temperature [ ºC ] +65°C +65°C +65°C
Minimal flow temperature [ ºC ] +12°C +12°C +12°C
Flow nominal [ m3/h ] 0.93 1.41 1.92
Pressure drop ( max. ) [ kPa ] 12 12 12
∆T recommended [ K ] 5 5 5
Connection port size [ " ] 1" 1" 1"
Parameter of low potential heat source ( source )
Minimal source temperature [ ºC ] -25°C -25°C -25°C
Maximal source temperature [ ºC ] +40°C +40°C +40°C
Flow source nominal [ m3/h ] 1640 2450 3340
Pressure drop source ( max. ) [ kPa ] 0.018 0.020 0.023
∆T recommended source [ K ] 7 7 7
Connection port size source [ " ] 10mm / 18mm 12mm / 18mm 12mm / 22mm
Parameter of electrical connection and planing
Mains dimension [ mm2 ] 5x4 5x4 5x4
Voltage [ V ] 3 x 400 3 x 400 3 x 400
Safety protection [ A ] 20 20 20
Current - nominal [ A ] 3.19 3.56 4.28
Current - maximal [ A ] 5 6.5 9.2
Current - Start [ A ] 8.61 9.6 11.55
Softstart MCI 12 MCI 12 MCI 12
Energy Efficiency Parameters and Performance ErP [ middle region Brussels ]
Energy class A++ A++ A++
SCOP 4.12 4.01 4.05
Seasonal energy efficiency η [ % ] 165 160 162
Rated nominal heating capacity P rated [ kW ] 6 9 13
Bivalent point [ ºC ] -9 -8 -7
Sound emissions - indoor Lw [ dB(A) ] 43 44 45
Sound emissions - outdoor Lw [ dB(A) ] 45 45 46

Cookies make it easier for us to provide you with our services. With the usage of our services you permit us to use cookies.