WATERSTAGE™ ATW Systems Split DHW Integrated Type Comfort Series


High leaving water temperature

-10°C outdoor temperature 55°C hot water

The temperature of leaving water can go up to 55°C without a backup heater. Hot water can be continually supplied throughout the house, even when the outdoor temperature drops to -10°C.

If you want to raise the temperature of the water supply to above 55°C, use a backup heater to supplement the primary heater.

High coefficient of performance (COP)

Heat pumps of WATERSTAGE™ ATW Systems work more efficiently and consume less energy than conventional heating systems.

2-zone individual control

2-zone individual control of, for example, 2 underfloor heating zones or the combination of 1 underfloor heating zone and 1 radiator zone

*Optional parts required

Automatic heating curve control

Automatic temperature regulation according to a heating curve (depending on a heating terminal and outdoor temperature)

High durability

  • Anti-corrosion protection
  • No flow switch required
  • Anti-freeze protection not required

Emergency operation

If an outdoor unit fails to operate, a built-in backup heater or an external boiler is activated to supply hot water to the house uninterrupted.