geoTHERM 22 - 46kW

geoTHERM ground source heat pump

  • The only Ground Source Heat Pump Quiet Mark approved
  • Energy yield display
  • All key components integral to the geoTHERM up to 17kW


The geoTHERM range of ground source heat pumps provides maximum comfort and efficiency, combined with simple installation, smooth operation and advanced diagnostics that have become synonymous with the Vaillant brand. The geoTHERM is compatible with domestic properties, and with a range of larger output can serve commercial properties or large homes which operate on a 3 phase electricity supply.

As part of a well insulated home, the geoTHERM system provides the perfect solution for off gas properties using oil or LPG in particular, by accessing a sustainable energy source, helping to protect against fluctuating prices of fuel, and also eliminating the need for fuel storage at home.

Features and benefits:

  • The only Ground Source Heat Pump Quiet Mark approved - Recognised independently by the noise abatement society with the “Quite Mark” as the quietest heat pumps on the market.
  • Vaillant weather compensated controls included - To get the maximum efficiency from your heating system with excellent comfort control. As well as clearly displaying the energy extracted from the ground to see how effective your heat pump is working
  • Free of charge Group Service commission with every geoTHERM - Our highly trained, professional and experienced renewable service engineers will come to site and assisted will all geoTHERM commissioning
  • All key components integral to the geoTHERM up to 17kW - Brine and central heating pumps, back up heater, 3 way valve, soft starter and control are all part of the geoTHERM package to ensure a complex heat pump installation is made as easy as possible
  • Energy yield display - The inbuilt control shows in a clear bar chart diagram showing the energy absorbed from the ground loop, proving the actual system efficiency



UnitVWS 220/3VWS 300/3VWS 380/3VWS 460/3
Heat pump typeBrine/Water heat pump
Product-side flow/return heating connections  G 1 1/2"
Product-side flow/return heat source connections  G 1 1/2"
Product dimensions, heating without connectionmm1200
Product dimensions, widthmm760
Product dimensions, depth without column mm900
Weight with packaging kg356370394417
Weight without packaging kg326340364387
Weight, ready for operation kg341359386414
Permissble ambient temperature  7 .. 2
Heat exchanger performance data The following performance data is applicable to new products with clean heat exchangers
Heating output B0/W35 T 5KkW21.530.937.745.5
Power consumption B0/W35 T 5KkW4.86.78.410.0
Output figures B0/W35 T 5K/coefficient of performance EN 14511
Power consumption B0/W55 T 8KkW20.128.334.641.4
Power consumption B0/W55 T 6K without pumps kW6.28.91113
Output figures B0/W55 T 8K/coefficient of performance En 14511
Sound level B0/W35 En 12102/EN14511 dB(A)54555661
Application limits: At the same volume flow rates as for the nomial output test under standard nomial conditions with nominal flows and brine circuit T 3K/heating circuit T 5K. Operation of the pump outside the application limits results in the heat pump being switched off by the internal control and safety device

Brine fluid: Ethylene glycol/water ratio 3/7
Max. brine fluid operating pressureMPa (bar)0.3
Minimum source inlet temperature (hot brine) in heating mode -10
Maximum source inlet temperature (hot brine) in heating mode 20
Volume of the heat source circuit in the heat pump l6.28.610.012.4
Nominal flow at t 3KM3/h5.17.68.510.7
Min. permissible volume flow m3/h3.
Max. permissible volume flow m3/h5.58.39.311.8
Pressure loss with nominal flow at T 3KkPa22.
Materials Cu
CuZn alloy
Stainless steel
Max. heating circuit operating pressureMPa (bar)0.3
Min. heating mode flow temperature 25
Max. heating mode flow temperature 62
Heating circuit water contents in the heat pump l8.310.312.014.1
Nominal flow at T 5Km3/h3.
Min. permissible volume flow m3/h2.
Max. permissible volume flow m3/h4.
Pressure loss with nominal flow at T 5KkPa7.29.311.020.0
Materials  Cu
CuZn alloy
Stainless steel
Refrigerant type  R 407 C
Refrigerant content for the refrigerant circuit in the heat pump kg4.105.996.708.60
Max. operating pressure: refrigerant MPa (bar)2.9
Compressor type  Scroll
Oil type  Ester (EMKARATE RL-32-3MAF)
Oil filling quantityl4.
Rated voltage of the compressor/heating circuit  3/NE/PE 400 V 50 Hz
Control circuit rated voltage 1~N/PE 230 V 50 Hz
Rated voltage of the auxiliary heater (on-site) 3/N/PE 400 V 50 Hz
Phase shifting  cos = 0.7 to 0.84cos = 0.72 to 0.83cos = 0.76 to 0.86cos = 0.75 to 0.86
Required network impedance Zmax with in-rusg current limiter 0.4720.4500.2700.100
Fuse type, characteristic C, slow-blow, three-pole switching (disconnection of the three mains connection lines in one switching operation)A20253240
Optional on-site residual-current circuit breaker RCCB type A (type A pulse-current-sensitive residual-current circuit breakers) or RCCB type B 9type B universal-current-sensitive residual- current circuit breakers)
In-rush current without in-rush current limiterA99127167198
In-rush current with in-rush current limiterA446585110
Min. electrical power consumption for B5/W35kW5.06.48.510.1
Max. electrical power consumption for B20/W60kW10.
Max. electrical power consumption for auxiliary heaterkW3 x 2.3
EN 60529 level of protection IP 10B

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