2 | © Danfoss | 2022.11
LGB53080
Termix VX-IV - 3 Series DS Fully insulated
Table of contents
Introduction..................................................................... 3
Warranty and product liability ...................................... 3
Glossary of technical terms ............................................ 4
Key to symbols ................................................................. 4
Materials .......................................................................... 4
Unit label .......................................................................... 5
Functional specification ................................................. 6
Personal protective equipment ...........................................................6
Warning of dangerous situations that can arise
with reasonably foreseeable misuse .................................................6
Safety notes ..................................................................... 7
Handling, transport and storage ................................... 8
Handling .......................................................................................................8
Transport and storage .............................................................................8
Assembly, installation and commissioning .................. 8
Unpacking and preparation ..................................................................8
Lifting instructions ...................................................................................9
Mounting and installation ...................................................................10
Dismantling the insulation .................................................................11
Design .........................................................................................................12
Schematic description - Termix VX-IV RAD ...................................13
Schematic description - Termix VX-IV UFH ....................................13
Electrical connections and wiring ....................................................14
Wiring diagram - radiator heating ....................................................15
Wiring diagram - underfloor heating ..............................................15
Fitting of energy meter .........................................................................16
Commissioning ........................................................................................17
Filling of the primary heating system .............................................17
Filling of the secondary heating system ........................................17
Start-up .......................................................................................................18
Underfloor heating ................................................................................18
Operating Guide - Components ................................... 19
Heating controls ............................................................ 19
RAVK controller (35-75 °C) ....................................................................19
Thermoactuators ................................................................................... 20
Differential pressure controller ......................................................... 20
Circulator pump UPM3......................................................................... 20
Grundfos UPM3 AUTO instructions ..................................................21
IMIT Thermostat ..................................................................................... 22
Safety valve .............................................................................................. 22
Waste adaptor ......................................................................................... 22
Maintenance .................................................................. 24
Troubleshooting ............................................................ 24
Troubleshooting ..................................................................................... 25
Deactivation and dismantling ..................................... 26
Disposal .......................................................................... 26
Declaration of conformity ............................................ 27
Pre hand over check list ................................................ 28
