alterra SWC series - compact ground source heat pumps for indoor installation

SWC 122H3

Article Number 10068442

The all-rounder - flexible in application and performance range.

Operating limit flow temperature 20°C to 65°C
Recommended range of application heat source -5°C to 25°C

The heat pumps are recommended for the following total heating demand: 
SWC 42H(K)3 = ca. 5 kW; SWC 82H(K)3 = ca. 8 kW; SWC 102H(K)3 = ca. 10 kW; SWC 122H(K)3 = ca. 12 kW; SWC 142H(K)3 = ca. 14 kW; SWC 172H(K)3 = ca. 17 kW; SWC 192H(K)3 = ca. 19 kW

For faster installation, the system comes with the following components:

  • Heat pump controller Luxtronik 2.1
  • Energy efficient ground source circulation pump / heating circuit
  • Switching valve heating and domestic hot water
  • Overflow valve for the heating circuit
  • Electric heating element 9kW for support during heating operation and domestic hot water preparation
  • Vibration decoupling brine and heating circuit
  • Shut-off valve for heat source circuit (4-12kW)
  • Heat quantity recording
  • Refrigerating circuit in module box (can be removed for bring in)
  • Free Cooling (K-series)
  • Filled with fluorinated greenhouse gas R410A

Additionally delivery:

  • Shut-off valves (fill and drain valve) heating circuit
  • Shut-off valves (fill and drain valve) heating source circuit (14-19kW)
  • Outdoor sensor

Necessary accessories:

  • Safety assembly and expansion vessel for the heating circuit
  • Safety assembly and expansion vessel for the heat source circuit


Article Number 10068442
Equipment designation SWC 122H3
Capacity for heating (kW) 12,18 (B0/W35)
COP 5 (B0/W35)
Max. flow temperature 65
Cooling No
Heat source S/W
Indoor/ Outdoor installation Indoor installation
Detached/semidetached house* Yes
Multiple dwelling* No
Industrial building* No
New building* Yes
Refurbishment* Yes
Seasonal space heating energy efficiency ƞs (35°C) 207,1
Seasonal space heating energy efficiency ƞs (55°C) 145,7
Seasonal space heating energy efficiency classAverage 35°C A+++
Seasonal space heating energy efficiency classAverage 55°C A++
Seasonal space heating energy efficiency class(the package of combination heater, temperature control and solar device) A++
manual (400 V) EN
controller (part 1) EN
controller (part 2) EN
logbook EN
Energylabel EN

The operating instructions of the functionally necessary accessories such as hydraulic module or hydraulic station are stored in the "Downloads" tab under "ACCESSORIES".

* The data are only recommendations. Depending on individual circumstances, a heat pump with a lower heating capacity may also be suitable for larger buildings and vice versa. In addition, it is possible to connect several heat pumps together and thus increase the heating capacity. Finally, a precise individual calculation is required to select the really suitable system for the project.

Possible energy efficiency classes
Space heaters (35° C, 55° C): A+++ to D Ӏ Combined space heaters: A+++ to G Ӏ Combi heaters: A+++ to D Ӏ Hot water preparation: A+ to F Ӏ Combination combi heaters: A+++ to G Ӏ Hot water tanks: A+ to F Ӏ Domestic hot water preparation: A+ to F Ӏ Ventilation: A+ bis G

Technical changes and errors excepted