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Summary of Contents for Danfoss 5 Series
- Page 1 Operating Guide Termix VMTD-IV MIX - 5 Series DS Fully insulated LGB53541 © Danfoss | 2023.04...
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Page 2: Table Of Contents
Termix VMTD-IV MIX - 5 Series DS Fully insulated Table of contents Introduction..............3 Heating controls ............18 Warranty and product liability ........3 RAVK controller (35-75 °C) ..............18 Thermoactuators ..................19 Glossary of technical terms ..........4 Differential pressure controller ............19 Key to symbols .............. -
Page 3: Introduction
For further information regarding disposal, please refer to the section “disposal”. Warranty and product liability Danfoss A/S’ area of responsibility does not include balancing, scope of works or mounting and correct connection of the unit. If changes are carried out to the HIU’s configuration or structure, the manufacturer can assume no responsibility. -
Page 4: Glossary Of Technical Terms
Termix VMTD-IV MIX - 5 Series DS Fully insulated Glossary of technical terms Domestic hot water Domestic cold water Hot water circulation Heat network supply Heat network return Heating supply Heating return Key to symbols Heat network Space heating Underfloor heating... -
Page 5: Unit Label
Termix VMTD-IV MIX - 5 Series DS Fully insulated Unit label The unit label is affixed to the back plate (Image of a unit label is shown as an example). Should the unit label become unreadable, damaged or fall off completely, then it must be replaced. -
Page 6: Functional Specification
Termix VMTD-IV MIX - 5 Series DS Fully insulated Functional specification The HIU is intended for connecting to a heat network for the production of both domestic hot water and space heating. The unit must be connected to the household installation in a frost-free location. -
Page 7: Safety Notes
Termix VMTD-IV MIX - 5 Series DS Fully insulated Safety notes Authorised personnel Read the instructions before start-up Assembly, installation, commissioning and maintenance must The instructions must be read through before installation only be carried out by a qualified and authorised HVAC or electrical and commissioning of the unit. -
Page 8: Handling, Transport And Storage
Termix VMTD-IV MIX - 5 Series DS Fully insulated Handling, transport and storage Handling All lifting and handling of the HIU must be carried out in an ergonomically responsible manner. Transport and storage The unit must be properly packed during both transit and storage. -
Page 9: Lifting Instructions
Termix VMTD-IV MIX - 5 Series DS Fully insulated Lifting instructions Temporarily remove the inspection hatch. Temporarily remove the service hatch. Lift the HIU in the following two places: 1. With your left hand side around the DHR pipe. 2. With your hand side around the DHF pipe that connects to the heat exchanger. -
Page 10: Mounting And Installation
Termix VMTD-IV MIX - 5 Series DS Fully insulated Mounting and installation The existing installation should be flushed out prior to installation. Follow the symbols indicated on the HIU for correct connection of the pipes. Please refer to the section “Key to symbols”. -
Page 11: Dismantling The Insulation
Termix VMTD-IV MIX - 5 Series DS Fully insulated Dismantling the insulation Disassembly of the inspection- and service hatch Disassembly of the side frame LGB53541 © Danfoss | 2023.04| 11... -
Page 12: Design
Termix VMTD-IV MIX - 5 Series DS Fully insulated Design Your HIU may look different from the HIU shown Heat exchanger, DHW Circulator pump Air vent, manual Electrical wiring box Sensor pocket, energy meter Pressure absorber with non-return valve Single check valve... -
Page 13: Schematic Description - Termix Vmtd-Iv Mix Ufh
Termix VMTD-IV MIX - 5 Series DS Fully insulated Schematic description - Termix VMTD-IV MIX UFH Mounting rail Domestic Hot Water Domestic Cold Water Heat Network Heating Supply Supply Heating Heat Network Return Return Your HIU may look different from the HIU shown... -
Page 14: Electrical Connections And Wiring
Termix VMTD-IV MIX - 5 Series DS Fully insulated Electrical connections and wiring Before connecting the unit to an electrical supply, please note the following: Safety notes Please read the relevant parts of the safety notes. Authorised personnel All electrical installation work may only be carried out by an 230 V authorised electrician. -
Page 15: Wiring Diagram - Radiator Heating
Termix VMTD-IV MIX - 5 Series DS Fully insulated Wiring diagram - radiator heating Wiring diagram - underfloor heating LGB53541 © Danfoss | 2023.04| 15... -
Page 16: Fitting Of Energy Meter
Termix VMTD-IV MIX - 5 Series DS Fully insulated Fitting of energy meter Fitting piece The HIU is equipped with a fitting piece for the energy meter. Mounting the energy meters: see diagram • Close isolation valves Close the isolation valves on Heat network supply and Heat network return, if there is water in the system. -
Page 17: Start-Up
Termix VMTD-IV MIX - 5 Series DS Fully insulated Start-up Start pump Start the pump and adjust to its highest speed. Remark: The circulator pump should run for 10 minutes during the first installation. Pump The pump must be switched off during system filling. -
Page 18: Operating Guide - Components
Termix VMTD-IV MIX - 5 Series DS Fully insulated Operating Guide - Components Heating controls RAVK controller (35-75 °C) Temperature setting Relation between scale numbers 1-5 and closing temperature. (the values given are approximate) see diagram 1 = 30 °C 2 = 40 °C... -
Page 19: Thermoactuators
Termix VMTD-IV MIX - 5 Series DS Fully insulated Thermoactuators Activating the thermoactuators The thermoactuators are supplied with a “first open” function, which means that they are slightly open for frost protection until the electrical see diagram controller is installed. During commissioning, the “first open”function is disabled by removing the red mounting split on the thermoactuator. -
Page 20: Grundfos Upm3 Auto Instructions
Termix VMTD-IV MIX - 5 Series DS Fully insulated Grundfos UPM3 AUTO instructions Control mode Each push on the button switches to the next program setting. The choice of operation mode depends on the type of heating system and the pressure loss in the system. -
Page 21: Imit Thermostat
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 see diagram heating exceeds 60 °C. -
Page 22: Pressure Absorber
Termix VMTD-IV MIX - 5 Series DS Fully insulated 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. see diagram The pressure absorber can be used as a substitute to the safety valve. -
Page 23: Maintenance
Termix VMTD-IV MIX - 5 Series DS Fully insulated Maintenance The HIU requires little monitoring, apart from routine checks. It is recommended that you read the energy meter at regular intervals and write down the meter readings. Regular inspections of the HIU in accordance with these instructions are... -
Page 24: Troubleshooting
Termix VMTD-IV MIX - 5 Series DS Fully insulated Troubleshooting In the event of malfunction, check the following before initiating troubleshooting: • That there is a power supply to the HIU. Authorised personnel • That the strainer on the Heat Network pipe has been cleaned. -
Page 25: Troubleshooting
Termix VMTD-IV MIX - 5 Series DS Fully insulated Troubleshooting Area of operation Problem Possible cause Solution The strainer in the supply Clean the strainer or return line is clogged up Check the dimensioning of DHW load, actual flow Too high DHW flow rate... -
Page 26: Deactivation And Dismantling
Termix VMTD-IV MIX - 5 Series DS Fully insulated Deactivation and dismantling Before beginning the task of dismantling, it must be ensured that: • All isolation valves on connections are closed. Gloves It is recommended that suitable work • The 230V plug has been removed from the socket. -
Page 27: Declaration Of Conformity
Termix VMTD-IV MIX - 5 Series DS Fully insulated Declaration of conformity LGB53541 © Danfoss | 2023.04| 27... -
Page 28: Pre Hand Over Check List
Termix VMTD-IV MIX - 5 Series DS Fully insulated Pre hand over check list Date: Unit No.: Carried out by: Description: Pos. Page Remark: Connection connected correctly All connections tightened Primary system flushed, through flushing bypass 2 Strainers checked Differential pressure controller adjusted...
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