Operating Guide
Termix VVX-B – 7 Series BS
2.0 Functional description
Indirect substation for single and multi-family houses with
up to 7 flats.
Application
The Termix VVX-B is a complete solution for hot water and
space heating with optimal safety, efficient energy transfer,
service-friendly construction and a compact design. The substation
is used if a heat exchanger is required or on a conversion to district
heating where the existing equipment is unsuitable for direct
connection.
District heating (DH)
The substation is prefabricated with a differential pressure
controller, fitting piece and sensor pockets for insertion of a heat
meter as well as strainers and ball valves.
Heating (HE)
The heating side consists of a plate heat exchanger, safety valve,
manometer, thermometers, ball valves, drain valve, air valve,
expansion vessel and circulation pump. The temperature of the
heating can be controlled thermostatically or by an electronic
controller with an outdoor temperature sensor. Depending on the
application, different heat exchangers dimensioned for central or
underfloor heating can be used.
Domestic hot water (DHW)
The domestic hot water is prepared in the heat exchanger and the
temperature is regulated with a thermostatic control valve. The
patented sensor accelerator accelerates the closing of the Danfoss
AVTB valve and protects the heat exchanger against overheating
and lime scale formation. The sensor accelerator helps to ensure a
stable hot water temperature by varying loads, flow temperatures
and differential pressure without the need for readjusting the valve.
The heat exchanger cools the DH water very efficiently, thereby
creating a very good operating economy. The sensor accelerator
and AVTB valve also works as a bypass keeping the house supply
line warm. This shortens the waiting periods during summer when
the heating system is in reduced operation.
2
DEN-GT
LGB40404
