Thermostatic mixing valve operation and benefits
The thermostatic mixing valve is a temperature control device that automatically mixes hot and cold water to maintain a constant temperature at the outlet. Its installation requires specific precautions to ensure :
- Optimum safety against burns
- Temperature stability even with pressure fluctuations
- Extended plant life
Essential precautions before installation
1. Preliminary checks
- Compatibility with your hot water production system (beware of instantaneous water heaters)
- Water pressure (between 1 and 5 bar)
- Minimum flow required (typically 5 l/min)
- Hot and cold water inlet alignment
2. Anti-scald safety
- Check for the presence of a safety device (stop at 38°C)
- Ensure that the safety stop is functional
- Check the non-return valve on the cold water inlet
Secure installation procedure
1. Piping preparation
- Completely purge the network
- Clean threads thoroughly
- Install dirt filters on each inlet
2. Installing the mixing valve
- Scrupulously observe hot/cold direction (red/blue markings)
- Use only the gaskets supplied (high-temperature fiber gaskets)
- Tighten moderately to avoid damaging the thermostatic cartridges
3. Commissioning
- Gradually open shut-off valves
- Perform a temperature test with a thermometer
- Check for water hammer
Mistakes to avoid
- Switch hot and cold water inlets
- Neglecting filter installation
- Forgetting to test the safety device
- Use unsuitable sealants
- Ignore manufacturer’s recommendations
Maintenance and servicing
To guarantee the longevity of your system:
- Annual descaling of filters
- Regular monitoring of output temperature
- Check that safety devices are working properly
- Gentle cleaning of cartridges as required
Current regulations and standards
The installation must comply with :
- NF EN 1111 standard for mixing valves
- Anti-scald regulations (decree of November 30, 2005)
- DTU 60.1 and 60.11 for sanitary installations
Calling in a professional
Our installation service guarantees :
- Strict compliance with safety standards
- Performance optimization
- Controlled commissioning
- Installation warranty
If you have any questions about the installation of thermostatic mixing valves, or would like to benefit from a guaranteed professional installation, our sanitary plumbing experts are at your disposal.
