Technical description

Flexible installation!

Right-hand and left-hand versions!
The control display is connected to the unit via a cable and can thus be attached to each side of the unit. Thus right-hand or left-hand installation is possible at all times.

Right-hand installation = outside air from right
Left-hand installation = outside air from left

The standard installation is right-hand installation and should be preferred. In the case of right-hand installation, the filter separator and air heat exchanger can be dismantled without any problems and without the need to dismantle other parts.

In the case of left-hand installation, in order to replace the filter and dismantle the air heat exchanger sheets of metal must be dismantled.

Key data at a glance!

The HV unit is perfectly tuned. The heat pump has a high coefficient of performance (COP). The ventilation system achieves maximum heat recovery through the reverse flow duct heat exchanger.

Technical data   HTZ 4
Recommended for buildings with a heat output at -14°C outside temperature kW max. 1 to 4
Air volume flow supply air/exhaust air m³/h 70-350
Heat recovery from exhaust air with reverse flow duct heat exchanger % 95
Compression available externally supply air/exhaust air Pa 100
Integrated fresh/exhaust air filter   EU 4 (G 4)
Optional pollen filter (fresh air)   EU 7 (G 7)
Operating limit air temperature °C -16 to +35
Max. heat pump flow / min. return flow temperature °C 55/25
Air volume flow outside air/outgoing air m³/h 1500
Compression available externally outside air/outgoing air Pa 20
Heating water flow rate recommended/internal pressure loss (at dT 10K=approx. 0.1 better COP) m³/h / bar 0.8/0.06
Heating water flow rate max./internal pressure loss (at dT 5K) m³/h / bar 1.6/0.20
Nominal heat output/coefficient of performance A7/W35 kW/COP 5.40/4.91
Nominal heat output/coefficient of performance A7/W45 kW/COP 5.10/3.92
Nominal heat output/coefficient of performance A2/W35 kW/COP 4.50/4.09
Nominal heat output/coefficient of performance A2/W45 kW/COP 4.30/3.58
Nominal heat output/coefficient of performance A-7/W35 kW/COP 3.20/3.37
Nominal heat output/coefficient of performance A-7/W45 kW/COP 3.10/2.82
Power consumption scroll compressor A2/W35 kW 1.10
Refrigerant /filling quantity type/g R134a/2000
Dimensions H/W/D cm 160x65x75
Air connections supply air/exhaust air DN 160
Air connections ventilation outside air DN 160
Air connections heat pump outside air/outgoing air DN 400
Condenser-storage tank connections DN 1 1/4" IG
Condensate connection (hose) DN 3/4"
Weight approx. kg 200
Rated power/protection kW/A 5.88/C16
Operating current scroll compressor A 6
Starting current scroll compressor A 32
Voltage/frequency V/Hz 400/50
Protection class according to EN 60529 IP 20
SOUND LEVEL LpA at 1 m distance with 100% HP+ventilation    
Noise radiation housing dB(A) 52
Duct “to outdoor” without silencer dB(A) 68
Duct “to living area” (at 200 m³/h) without silencer dB(A) 59
Housing   steel sheet
Colour   white
Place of installation   inside
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