22 | © Danfoss | 2021.06 LGB40450
Termix VVX-I-R FI - 7 Series DS fully insulated
UPM3 pumps can be controlled under constant pressure, proportional
pressure or constant speed mode as defined by means of an intelligent
user interface.
The variable speed modulating modes allow the pump to match its
performance to the system requirements, helping to reduce noise
when thermostatic valves are closing down.
Energy labelling class A.
Circulator pump UPM3
10
see diagram
Differential pressure controller
The differential pressure controller smooths out the fluctuations
in pressure arriving from the heat network. The operating pressure in the
heat interface unit is thus held steady.
AVPL can be set within the region of 5 kPa to 25 kPa (0.05 bar to 0.25 bar).
31
see diagram
Refitting the RAVK sensor
1. Setting
Before refitting the RAVK sensor make sure it is set to 5. Make a note of
the position of the arrow.
2. Ridges
On the exact opposite side of the arrow on the front is a ridge on the
inside edge of the sensor housing - and another opposite this one.
3. Grooves
Note the four grooves on the rim of the valve.
4. Alignment
Align the arrow on the front to one of the grooves on the rim of the valve
and push the RAVK sensor onto the valve.
Setting
Alignment
Grooves
Ridges
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