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Danfoss Termix One-B - User Manual

Danfoss Termix One-B
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InstallationGuide
TermixOne-B
1.0TableofContents
1.0TableofContents.............................................1
2.0Functionaldescription......................................2
3.0Safetynotes.....................................................3
3.1SafetyNotes–general............................................3
4.0Mounting........................................................4
4.1Mounting...........................................................4
5.0Design.............................................................6
5.1Design...............................................................6
5.2Schematicdiagram................................................7
6.0Controls..........................................................9
6.1DHWtemperaturecontrol........................................9
6.2Maintenance........................................................10
7.0Troubleshooting..............................................11
7.1Troubleshootingingeneral......................................11
7.2TroubleshootingDHW............................................11
7.3Disposal.............................................................12
8.0Declaration......................................................15
8.1Declarationofconformity........................................15
DanfossHeating
VI.CW.J3.02/LUK38000
DEN-GT
1

Table of Contents

Questions and Answers

  • G
    Garrett MartinAug 7, 2025
    What to do if some taps have hot water but not all in my Danfoss Termix One-B Water Heater?
    • S
      Sherry KeithAug 7, 2025
      If you're experiencing hot water in some taps but not others with your Danfoss Water Heater, it could be due to a couple of reasons. Firstly, check for backflow of cold water mixing with the hot water, possibly caused by a defective thermostatic mixing valve; if so, replace it. Secondly, inspect the circulation valve for a defective or clogged non-return valve; replace or clean as necessary.
  • J
    Jennifer OlsenAug 12, 2025
    Why does the temperature drop when tapping water from my Danfoss Water Heater?
    • W
      William PorterAug 12, 2025
      A temperature drop during tapping with your Danfoss Water Heater may occur due to scaling of the plate heat exchanger, requiring replacement or rinsing. Alternatively, the DHW flow might be larger than the substation's design capacity, so reduce the DHW flow.
  • R
    rroblesAug 19, 2025
    How to adjust the temperature if the tap is too hot on my Danfoss Termix One-B?
    • M
      michaelrobertsAug 19, 2025
      If the tap temperature is too high and the DHW tap load is excessive on your Danfoss Water Heater, the thermostatic valve may be adjusted to an excessively high level. Check and adjust the setting accordingly.
  • R
    richardsonjacobAug 25, 2025
    What to do if the thermostatic control valve does not close on my Danfoss Water Heater?
    • M
      Mary HernandezAug 26, 2025
      If the thermostatic control valve on your Danfoss Water Heater isn't closing, the temperature difference between the DH supply and the DHW set point might be too low. Lower the set point temperature or increase the DH supply temperature.
  • R
    Richard RodriguezOct 31, 2025
    Why is there too little or no DHW from my Danfoss Termix One-B?
    • D
      Daniel ButlerOct 31, 2025
      If your Danfoss Water Heater provides too little or no domestic hot water (DHW), several factors could be responsible. Check if there is electricity. The strainer in the supply or return line might be clogged, in which case you should clean it. The DHW circulation pump may be out of order or set too low, so inspect the circulation pump. A defective or clogged non-return valve could also be the culprit; replace or clean it. If automatic controls are in place, ensure they are correctly set, referring to the enclosed instructions for the electronic controller. Scaling of the plate heat exchanger can also cause this issue, requiring replacement or rinsing. Inspect the motorized valve, using the manual function, and replace if defective. Similarly, check and replace any defective temperature se...

Summary

Functional Description

Safety Notes

3.1 Safety Notes - General

General safety instructions and warnings for substation installation and operation.

Mounting and Installation

4.1 Mounting

Installation guidelines, connections, and dimensions for mounting the substation.

Product Design and Schematics

5.1 Design Overview

Visual identification and description of the main components of the substation.

5.2 Schematic Diagram

Diagrams illustrating the substation's internal connections and components.

Controls and Maintenance

6.1 DHW Temperature Control

Details on controlling domestic hot water temperature, including AVTB, safety valves, strainers, and pressure equalizers.

6.2 Maintenance

Routine checks, inspections, and maintenance procedures for the substation.

Troubleshooting Guide

7.1 Troubleshooting in General

Basic checks to perform before troubleshooting operating disturbances.

7.2 Troubleshooting DHW

Common DHW problems, their possible causes, and solutions.

7.3 Disposal

Guidelines for dismantling and disposing of the product according to local regulations.

Declaration of Conformity

8.1 Declaration of Conformity

EC declaration of conformity for the substation regarding machinery directives.

Danfoss Termix One-B Specifications

General IconGeneral
TypeInstantaneous water heater
ApplicationDomestic hot water production
Primary fluidWater
ControlElectronic
Heat exchangerStainless steel
Voltage230 V
Frequency50 Hz
ThermostatElectronic
MaterialStainless steel
Secondary fluidTap water

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