© Danfoss | 2022.02| 25
LGB55001
Termix VVX-IV - 7 Series DS Fully insulated
Domestic Hot Water Temperature control
Domestic Hot Water temperature control
DHW temperature should typically be adjusted to 45-50 °C, as this
provides optimal utilisation of DHW. At DHW temperatures above
55 °C, the possibility of limescale deposits increases significantly.
IHPT 180 controller (45-65°C)
The IHPT 180 controller is a self-acting flow-compensated temperature
controller with integrated differential pressure controller.
By turning the handle for temperature setting in a (+) direction the setting
is increased, and by turning it in a (-) direction the setting is decreased.
Turns*
Scale
DHW Temperature Settings (° C)
0
7
64
1
6
61
2
5
58
3
4
55
4
3
52
5
2
48
6
1
44
7
0
43
* Start position: Handle turned fully in (+) direction.
The values are intended as a guide. Typically best verified at the kitchen tap
74
see diagram
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.
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.
74
see diagram
62
see diagram
