Product Introduction - Danfoss Akva Lux II TDv Mounting And Installation Manual

Instructions Akva Lux II TDv
3.

PRODUCT INTRODUCTION

Application
Akva Lux II TDv is a fully insulated substation substation for direct heating and instan-
taneous domestic hot water for large singlefamily, houses. The Akva Lux II TDv is also
suitable for small apartment houses with 2-4 apartments.
Construction
The Akva Lux II TDv is prefabricated with a brazed, highly efficent Danfoss plate heat
exchanger type XB06H-1 26 or XB06H-1 40 for domestic hot water production, an energy-
saving domestic hot water controller Danfoss PTC2+P as well as a Danfoss FJVR thermostat
for control of the bypass/circulation temperature, non-return valve on the cold water
connection, differential pressure controller and strainer.
The Akva Lux II TDv is also equipped with a zone valve RA-C and thereby prepared for
fitting of a thermal actuator TWA-Q, which enables connection to an electronic
programmable room thermostat.
The substation is prepared for domestic hot water recirculation, if required.
A circulation set and a safety set is available as optional equipment.
Design
The design emphasizes the user-friendly placement of all components.
The Akva Lux II TDv supplied with an elegant insulation cover and can be supplied with
a white-lacquered cover in modern design.
Akva Lux II TDv units are prepared for merger with Danfoss distribution systems, mounted
underneath the unit, for use on DHW and heating systems with concealed pipe installations.
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.
Bypass (thermostatic circulation)
The water heater is 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 possible DHW comfort and economy. DHW
re-circulation can be easily added to the substation when it is required.
Domestic hot water recirculation
The substation is prepared for connection to systems with DHW recirculation. DHW
installations with recirculation ensures DHW at the tap site without waiting time and
without water waste. 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 thus a very good district
heating economy.
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 distance, it is possible to establish a nice piping either
in the top or in the bottom of the substation.
5 5
Danfoss District Energy 145X2085 / AQ428255318526en-010101 DKDHR