Gas condensing centre

As a high tech solution specifically for hard water areas, the CGS-2R quietly goes about keeping your home nice and warm.

Hard water? Not a problem for this advanced heating system. The compact CGS-2R has been developed specifically for hard water areas. It is equipped with a cylinder with an internal indirect coil, which reduces the risk of the DHW cylinder scaling up.

In addition to delivering hot water at just the right temperature, this extremely quiet appliance, of course, also provides cosy warmth with great efficiency. Thanks to the large heat exchanger, it heats up quickly and the energy saving thermal insulation prevents cool-down losses. You can operate the CGS-2R conveniently with the Wolf control system or directly via smartphone.

  • Compact Info
  • Specification

Benefit from the high tech solution specifically for hard water areas.

The CGS-2R is an efficient heating system to have if you live in an area with very hard water. The appliance is equipped with a cylinder with an internal indirect coil which is particularly suitable for this situation, as it reduces the risk of the DHW cylinder scaling up. In addition, its highly efficient thermal insulation minimises cool-down losses. The compact CGS-2R goes about its business incredibly quietly, providing cosy warmth and a central DHW supply in detached and two-family houses.

  • The internal indirect coil prevents the cylinder scaling up
  • 145 l cylinder volume
  • Thanks to booster technology, enough hot water for a full bath is available immediately if required
  • Quick and easy to assemble: the two-part CGS-2R can be split into a heating module and a cylinder module, so it fits easily through doorways
  • Compact appliance in a contemporary, angular design
  • Simple and intuitive to operate via the BM-2 programming unit, convenient using the smartphone app whilst on the go, or via other SmartHome solutions
technical drawing
Model / Performance
  • CGS-2-14/150R
  • CGS-2-20/150R
  • CGS-2-24/150R
Please choose model
Gas condensing centre CGS-2R
Model type CGS-2-14/150R CGS-2-20/150R CGS-2-24/150R


max. 14kWmax. 19kW max. 24kW


Condensing x x x
Conventional - - -

Combination with

Heat pump - - -
Solar - - -
Mechanical ventilation x x x

DHW heating

Combi, integ. Instantaneous water heating - - -
integr. water cylinder x x x
ext. water cylinder - - -
DHW power output (l/Min) 181 196 203
cylinder size (equivalent) - - -

Modulation range 50/30°

2,1-15,24,4-20,4 5,6-25,8

Energy efficiency class

Central heating A A A
DHW heating A A A

General info

Heating output (rated heat input)

Heating mode in (kW) 14kW 19kW 24kW
DHW heating in (kW) 13,5kW 22,2kW 27,1kW

Efficiency (standard seasonal efficiency)

at 40/30° (Hi/Hs) in % 110/99 110/99 110/99
at 75/60° (Hi/Hs) in % 107/96 107/96 107/96


Height (mm) 1792 1792 1792
Width (mm) 600 600 600
Depth (mm) 635 635 635
Total weight (kg) 115(35+80) 115(35+80) 115(35+80)

Noise level

max. dB46 47 48

Power consumption

Standby (W) 3 3 3
Max. heating/DHW (W.) 93 63 88

WOLF Smart Set Ready

x x x

wiButler ready

x x x


Efficient condensing technology that reliably provides cosy warmth in your home.

WOLF wall mounted condensing boilers always offer the perfect heating solution. The CGS-2R is the perfect choice for hard water areas. Its advanced booster technology immediately provides you with enough hot water for a blissful soak in the tub. And that's not all: the appliance operates very quietly, so nothing disturbs your peace at home.

Make life easier for yourself. Benefit from reliable quality and a control system that can be completely customised to suit your individual requirements. Thanks to SmartHome and the smartphone app, you can easily control the CGS-2R even whilst out and about.

Whether you're looking at heating, ventilation or cooling

Whether you're looking at heating, ventilation or cooling – at WOLF we are only satisfied when all these elements come together to provide you with an indoor environment where you can truly relax. We want technology to fit around you, not the other way round.
And because your requirements may change over time, we offer you full control of your heating system, DHW temperature and air change rates with our user friendly devices, intuitive apps, and SmartHome enabled programming units –so your living zone is also your comfort zone.