Akva Lux VXe with safety DHW

Application
This variant of Akva Lux II VXe is a fully insulated district heating substation for indirect heating and instantaneous domestic hot water, featuring high performance and simple operation. The Akva Lux II VXe covers both the DHW and heating requirements of large and small single-family houses and is also suitable for large projects.

Heat exchanger for DHW heating
The substation is based on a brazed, highly efficient plate heat exchanger, which is controlled by a thermostatic and pressure controlled PTC2+P DHW controller. The Danfoss PTC2+P DHW controller with integrated differential pressure controller and energy saving function ensures that the heat exchanger is cold during standby. Motorized control valve VM2 with actuator with safety function and safety thermostat protect DHW circuit from high temperatures.
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Bypass (thermostatic circulation)
​​​​​​​The substation supplied with a thermostatically controlled bypass, which ensures that hot water is produced immediately, when tapping starts. The bypass temperature is set with due consideration of the best DHW comfort and energy savings balance. DHW recirculation can be easily added to the substation when it is required.
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Domestic hot water recirculation
The substation is prepared for connection to systems with DHW recirculation. Switching to DHW recirculation is possible from a constructional point of view, requiring only mounting of a separate circulation set (see options).The circulation temperature is set independently of the set DHW temperature. This ensures the best possible DHW comfort, very low standby losses and return temperature and thus a very good district heating economy.
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Mounting of heat meter
The substation is equipped with ¾” fitting pieces in the DH return flow for fitting of a heat meter.
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Service and maintenance
The substation is very service-friendly and easy to install. It is mounted on the wall and as all pipes are placed in pipe bracket dis-tance, it is possible to establish a nice pip-ing. The removable cover plate in the front allows easy access to the specially designed chamber where most frequently used com-ponents such as ECL310 and PTC2+P are lo-cated. The easy access chamber enables fast-er commissioning and maintenance with-out removing the whole cover of the substation. Calculator of the heat meter can also be mounted into this chamber for easy reading.