Hot Water Usage
Before adjusting settings, you should look at how much hot water you are currently using.
A full bath in the UK typically uses 80L of water.
A standard mixer shower could be using 15 litres per minute, so a 10 minute shower could use 150 litres of water and "rain showers" could be using even more than this.
Using an eco shower head and keeping shower times down will help reduce water usage and help save money.
Reheat times
The Edel is a very economical to run hot water cylinder, using heat pump technology to heat the water. In doing so, it is not quite as fast to reheat as a gas or electric immersion driven hot water tank.
Heat up times from cold (10C water) are:
Edel 170L cylinder = 10hr 24min
Edel 200L cylinder = 7hr 15min
Edel 270L cylinder = 9hr 48min
Note, these are the times are a "worst case" scenario, where the tank is having to heat up, using heat pump alone, a complete tank of cold water. In reality, you would typically use hot water in smaller amounts and the heat pump would be running to recover that heat as water is being drawn off and the tank drops in temperature.
As it can take some hours to reheat the tank depending on how much water is used. It can help to spread out hot water usage, ie taking some showers in the morning and others in the evening. That said, there are some setting that can be checked / adjusted to improve performance.
Water Temperature
When you use hot water, most of the time the hot is mixed with cold water at the tap, so it is usable for hand washing & bathing to around 38-40C. If the water in the tank is hotter, then you use more cold water at the tap mixed with the hot to achieve the same temperature at the tap, and therefore you make the hot water in the tank last longer.
Whilst we recommend heating water to 50C for economic operation, if you find yourself running out of hot water, try increasing the temperature to say 55C (or up to 60C on Edel 200/270).
To adjust the temperature follow this guide:
Timer
If you are running out of hot water, make sure the timer is set to allow the heat pump to re-heat the water whenever it is required. To do this, ,make sure the timer is set to COMF mode 0000-2400 each day so that the cylinder is able to heat up when it needs to. When the heat pump heats the water it does it slowly but very economically, so it may need several hours to run. To adjust the timer:
If you are on Economy 7, you may find that 7 hours overnight is not quite enough time to allow the cylinder to fully reheat, so setting the Edel timer for a longer period or leaving on 24 hours as above, may be needed.
Using Heat Pump & Immersion element together for quicker recovery
If you still find that you are running short on hot water, then there is another setting which can be adjusted.
To get to this:
• Press MENU button
• Turn DIAL to INST.MENU
• HOLD DOWN both MENU and CLOCK buttons until the screen goes blank, then let go.
• Turn the DIAL to SETTINGS and press the DIAL.
• Turn the DIAL to "T°C MINI no", press the DIAL, turn it so that it says 43°C and press the DIAL to confirm.
• Press MENU three times to exit the menus.
Note that this mode uses both the electric immersion element AND the heat pump together when the water falls below 38C and will switch back to heat pump only operation once the water reaches 43C. This naturally uses a little more electricity, but gives a quicker recovery time.
If you have tried the above changes and are still finding you are running out of hot water, there is another setting that can be altered. The "Max Time" setting can be set to 2 hours. This means, if the heat pump is running for 2 hours and the tank has still not reached the target temperature, then it will switch on the immersion element alongside the heat pump to get back up to the target temperature as quickly as possible. Naturally, this setting will use more energy, but it should give you hot water much more quickly. The time setting can be altered; ie 5h = 5 hours running on heat pump alone before switching on immersion & heat pump together. The video below shows how this setting is altered.
Plumbing & Thermostatic valves
If you find that your tap is not getting hot enough, even when no cold is being run at the same time, check if you have a thermostatic blending valve in use. These are often fitted to bath taps to prevent scalding water temperatures being delivered. If yours is set too low, that may be the reason why one tap is only tepid, yet the kitchen tap is still hot. Note, Dimplex do not supply or fit thermostatic blending valves.
Still running out?
If you are still running out of hot water after making these changes, then it is likely that your usage is higher than normal or that the cylinder may be undersized for your application. Look to reduce your water consumption by fitting eco shower heads, taking shorter showers and fitting aerating tap nozzles to reduce flow when hand washing. The Energy Savings Trust has more information on how to save water.
https://energysavingtrust.org.uk/simple-ways-to-save-water-at-home/
Applicable to models: EDL170UK, EDL200UK, EDL270UK, EDL170UK-520RF, EDL200UK-630RF, EDL270UK-630RF
Require additional help? Please follow link below
https://glendimplexservice.freshdesk.com/a/solutions/articles/79000136321
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