22 | © Danfoss | 2023.04
LGB53541
Termix VMTD-IV MIX - 5 Series DS Fully insulated
Domestic Hot Water Re-circulation
Circulation pipe
The circulation pipe set is mounted directly on the controller.
The set includes circulation pipe, single check valve and fitting.
When mounting the hot water circulation directly on the controller the
hot water circulation temperature will be the same as the idle
temperature. The idle temperature is a few degrees lower than the set
domestic hot water temperature.
Hot water recirculation pump
When a hot water recirculation pump is installed together with the
pre-payment unit, it is recommended that the pump takes Switched Live
from Terminal 2 in the heating interface wiring box.
This is to ensure that the pump stops circulating when no credit is
available on the pre-payment unit.
74
see diagram
Heat Exchanger
The heat exchanger is produced in acid-resistant, stainless steel
Air vent, manual
48
see diagram
B
see diagram
Pressure absorber
The pressure absorber reduces excess pressure created in the system
caused by sudden opening/closing of taps, so a discharge outlet is
omitted.
The pressure absorber can be used as a substitute to the safety valve.
By reducing such excess pressure, the pressure absorber ensures
proper functioning of the components located in the system.
It will also considerably reduce the noise generated by vibrations that
occur due to the sudden closure of taps. The pressure absorber should not
be applied in systems with hot water circulation.
62
see diagram
