A brilliant concept and will undoubtably save money as it does what it says Energy Saver. I have no connection to this company, this is purely my opinion. Read full review It appears that when the 60 deg legionella setting is enabled and the time between cycles set, the ESCDE/B will, when the internal countdown triggers, fire the boiler calling for the hot water to reach and maintain 60 deg for 1 hour before being satisfied. The internal timer now resets, and the countdown timer to the next cycle begins, irrespective of the time of day. The ESi Controls Electronic Dual Cylinder Thermostat ES-CTDEB is a revolutionary new energy saving product, developed exclusively by ESi Controls. It is a direct and economical replacement for traditional mechanical dual cylinder thermostats. With real safety and energy saving benefits and providing accurate temperature control, it also features a clear and informative LCD display. If the Legionellasetting is active on the ESCTDE/B, the unit will automatically switch 230v to the Domestic Hot Water motorised valve (NOTE- this overrides any programmer settings), which in turn will bring on the heating, the output from the ESCTDE/B will remain on for 1 hour when the tank temperature is above 61℃. When I bought the electronic thermostat, I assumed that, when the schedule for hot water was active, the ESCTDE/B was clever enough to automatically increase the demand temperature from the set point for the required duration when the day timer had counted down.

Finished installation all working, as my hot water system is directly fed, (no header tank), I did not need to enable the ‘disinfection mode’, this mode increases the water temperature to 61℃ for 1 hour to kill Legionella, however, as the feature exists, I set it to activate once per week. We had been away for a few days hence the water temperature was showing 21℃, the unit was initially set for 48℃ and the Red LED shows the cylinder is calling for heat. Picture showing wiring from ESCTDE/B to heating terminal box and the tank temperature now reached the set-point of 48℃. Link to ESI Controls Information: If it is indeed broken, what do I replace it with? Is there any particular brand/model you would recommend? So yeah, my issue is that with this particular stat the limiting factor seems to be the boiler flow temperature, because if it was for the stat, it would be constantly on. Are you suggesting that I should just make peace that the stat is sh*t, and use it as if the dial had no numbers on it?

Users want to know the temperature of the water going to the taps, but because the cylinder thermostat is much lower down, they are derated to take into account the temperature that they are measuring much lower down will be less. But because it's a moving goal post and even hot water cylinders vary due to their size the thermostats are rarely right. In my experience, the 10C difference you refer to actually about par for the course. The greatest energy and safety benefit of the ESCTDEB is the weekly one-hour ‘boost’ to over 61°C, disinfecting the cylinder, killing any legionnaire disease, allowing a lower storage water temperature and satisfying a number of legal and building requirements. That sounds fairly normal to me. Cylinder thermostats are notoriously inaccurate. The problem is that cold water comes in at the bottom of the cylinder at say 5C and is heated by the boiler. Hot water rises to the top where it is drawn off to the taps at say 65C. So the temperature range of the water inside the cylinder is 60C. The thermostat is usually a third of the way up. What's the temperature there? who knows, somewhere between 5C and 65C. And it will change depending if the boiler is heating the cylinder or not, and how cold the incoming cold water is, both of which can change. This cookie, set by YouTube, registers a unique ID to store data on what videos from YouTube the user has seen. NOTE – The mains supply to the ESCTBE/B MUST be from the same source as the heating systems programmer, this will ensure that there is only one point of electrical isolation for safe working.

Records the default button state of the corresponding category & the status of CCPA. It works only in coordination with the primary cookie. Part 2 is HERE. Electronic Dual Cylinder Thermostat ESCTDE/B ESi ESI Controls Hot Water Cylinder plumbing Santon Premier Plus Thermostat

Here To Help

What I had noticed was that when the timer was on, the call for DHW from the cylinder was constant. I thought okay, the flow temperature should be roughly 15C above the cylinder stat set point, and so I raised the flow temperature to 70C in the hope that at some point the cylinder stat would cut off. Yet what actually happened was that the cylinder was still constantly calling for heat for 1.5 hours continuously and my DHW was coming out of taps at 70C. My stat's broken right? Is there any other reason why it would behave like I described? The cylinder is in a cold loft so could the low external temperature affect the reading of the stat?