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flexoTHERM ground source heat pump

230V and 400V ground source heat pump with Green iQ technology

  • MCS accredited and Quiet Mark approved
  • Suitable for domestic and commercial properties
  • ErP rated A+++ when installed with VRC 700 or VRC 700f
  • High seasonal SCoP value
Request a quote

Overview

flexoTHERM can be connected to either a ground collector or borehole system to provide efficient generation of heating and hot water.

This option is suitable for applications where adequate space is available to incorporate a ground collector - or a borehole in situations where space may be restricted. In addition, flexoTHERM can be connected to a passive cooling module to assist with climate control in modern homes that are air tight. The passive cooling module works as a heat exchanger, removing the thermal energy stored in a building to discharge it into the ground. It is only suitable for homes with underfloor heating and fan coil systems, and must work with a ground collector.

Passive cooling is possible at almost no cost with ground or water sources, passing warm heating circuit water against cool brine fluid to gently cool down the building.

Features and benefits:

  • Available in 230V and 400V - 230V heat pump is available in 5, 8 and 11kW models. 400V heat pump is available in 5, 8, 11, 15 and 19kW models.
  • More power, more efficiency - Integrated EVI super compressor, injects additional refrigerant into the compression cycle
  • Exceptionally quiet - With noise levels as low as a modern refrigerator - 42dB(A), flexoTHERM has earned the ‘Quiet Mark’ approval
  • High quality and sustainable - Green iQ technology aids in future-proofing the product and ensures optimum efficiency, performance and sustainability
  • Ability to cascade up to seven flexoTHERM heat pumps - Suitable for larger domestic and commercial properties
  • Extended capabilities and flexibility - Modular design gives flexoTHERM greater sustainability and flexibility with accessories to enable connection to either air or water sources.

Specifications

Specifications

Technical dataUnit5kW 230V8kW 230V11kW 230V5kW 400V8kW 400V11kW 400V15kW 400V19kW 400v
Product dimensions (H x D x W)mm1183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 6001183 x 595 x 600
Weight, with packagingkg161176188155170178185197
Weight, without packagingkg151166178145160168176187
Weight, ready for operationkg157173185151167175187200
Sound power level B0/W35
EN 12102/EN 14511 LWI in heating mode
dB(A)43.845.648.539.842.445.249.948.4
Inrush current (with inrush current limiter)A1519601519222630
Energy-related Product 35°C*bandA+++
Energy-related Product 55°C*bandA+++
MCS SCoP performance table
35°C 4.674.644.734.975.345.305.184.87
40°C 4.154.144.234.404.744.684.604.36
45°C 3.643.653.733.834.144.074.023.85
50°C 3.503.523.613.663.993.893.883.76
55°C 3.363.383.493.493.833.723.743.68

*Reported efficiency when used with VRC 700 / VRC 700f controller

For further details on the specifications of this products, please download the Technical Specification table/s below:

230V (685 kB)

400V (3392 kB)

Related Products

Related Products

Passive cooling module

Provides passive cooling functionality for flexoTHERM heat pumps

  • Passive cooling module for use with ground collector and boreholes
  • Thermally insulated casing
  • Integral diverter valve, mixing valve and heat exchanger
  • Wall-mounted for easy installation

VRC 700 and VRC 700f

Wired and wireless system controls for single and cascade installations

  • Takes care of all Vaillant equipment automatically by intelligently communicating with all Vaillant appliances
  • Flexible time programs
  • Clear, high contrast backlit display
  • Programs are permanantly stored

uniSTOR heat pump cylinders

Compatible with Vaillant heat pumps

  • Fully compatible with the Vaillant heat pump range
  • Range of options and accessories to cater for a wide range of projects and requirements
  • Superior insulation and efficiency

Downloads

How to get

Request a quote

Vaillant renewable products and accessories are available over the counter or as a next day service at most plumbing and heating merchants throughout the UK.

We can provide you with bespoke solutions to accommodate a variety of installations. To discuss your requirements please contact us.

Alternative products

Alternative products

geoTHERM 22kW, 30kW, 38kW and 46kW

Ground source heat pump

  • "Quiet Mark" accredited thanks to geoTHERM multi-stage sound insulation
  • Energy yield display
  • MCS accredited, RHI eligible

flexoTHERM 400V 5, 8, 11, 15 and 19kW

Air source adaptation

  • Exceptionally quiet with noise levels as low as a modern refrigerator - 42dB(A), flexoTHERM has earned the ‘Quiet Mark’ approval
  • Compatible with the Vaillant wired VRC 700 and wireless VRC 700f controls, to provide optimum system efficiency and a system rating of ErP A+++
  • Built-in heating circulation pump and a three-way diverter valve
  • Green iQ technology aids in future-proofing the product and ensures optimum efficiency, performance and sustainability
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