© Danfoss | 2023.04| 21
LGB53541
Termix VMTD-IV MIX - 5 Series DS Fully insulated
IMIT Thermostat
The IMIT thermostat is used to limit the underfloor heating flow
temperature. The IMIT thermostat is preset to 60 °C and will shut off
the pump and the primary on/off valve when the flow to the underfloor
heating exceeds 60 °C.
If not already factory-fitted, the IMIT thermostat should be fitted on the
secondary side flow pipe as close to the HIU as possible using the steel
band provided.
To adjust the IMIT thermostat, loosen the visible screw. The cover can
now be removed and the scale adjusted to the desired temperature.
60
see diagram
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
Tamperproofing the IHPT valve
By sealing the inserted disk to a ear on the IHPT temperature head it is
possible to prevent a change of the domestic hot water setting.
Insert the sealing wire through a hole in the locking ring and the ear of the
IHPT handle which is closer to you and seal it off.
