Hot water from your Solar PV system
- Automatic hot water
Use surplus power from your renewable system to heat water in your existing immersion tank. - Start saving money
The intelligent immersion controller starts diverting power with as little as 50 Watts excess. - Smart use of your power
All Optimmersion® models work with Wattson Solar Plus and Optiplug to identify and use your surplus electricity even after water is heated.
introduction
It can be challenging to find ways to maximise your home-grown electricity consumption. Optimmersion® is an automatic controller that diverts all your surplus generated electricity to heat water in your immersion tank. Investing in an Optimmersion® system for use with solar panels will pay for itself in as little as 11 months, and will bring you savings on your energy bills year after year.
Once the cost of system has been paid back, you will see years of profit ahead of you in the form of lower energy bills. The Optismart bonus refers to additional savings made simply by being aware of and controlling your home’s electricity consumption, using the Wattson energy monitor.
What people are saying about Optimmersion®
Steve Davies, Newport
Stella Woods, Milton Keynes
Jill & Tony, Cambridgeshire
Product information
Optimmersion is a proportional controller that diverts surplus electricity to heat water in the immersion tank. It only uses surplus electricity – electricity that is not being used in the house, so it is effectively giving you automatic hot water.
- You get automatic hot water from your generation because only the surplus power from your renewable system is used to heat the water in your tank.
- The intelligent controller gets to work whether or not you’re in the house, meaning you automatically get hot water with electricity you would otherwise be exporting.
- You are being Smart about electricity because you are only using surplus. All of your ‘home-grown’ electricity is put to use, minimising what you pay your electricity supplier.
- You will see your water heating bills drastically reduce as excess electricity is diverted to the immersion heater.
- Optimmersion® is a standalone system that does not require a Wattson Solar Plus to get its data.
- If you are already a Wattson owner, it will work very well to show how much of your generated electricity you are using and how much power you could be using on other products in the home.
- If you don’t already have a Wattson, we recommend starting with Optismart Hot Water which includes a Wattson display, showing you how much energy is being diverted to your tank.
- Optimmersion® should only be installed by a professional electrician, installer or equivalent. It is not suitable for self installation.
- The Optimmersion® system ensuring all of this household’s generated electricity is used in the house with the surplus diverted to the immersion tank
Optimmersion® versions
All versions are supplied with a controller unit and a power throttle, part of the modular design. The controller unit needs to be accessible as not only does it become your controller, but it shows useful information about the performance of your system.
Optimmersion® Wireless OIMM-WIEN-UK
Optimmersion® Wireless allows for standardised, predictable and repeatable installations thanks to the wireless connectivity between power throttle and controller. The informative display shows generation values, how much is flowing to and from the grid and your household’s usage. You also see how much surplus is being diverted to the tank. Optimmersion® Wireless includes multiple timers, to allow you to use off peak tariffs and a boost period. Optimmersion® Wireless can cater for multiple tanks in either shared or cascaded formats. And if you already have a Wattson display, it will work with that too.
- Has multiple timers allowing for use of off-peak periods
- Colour display shows how much electricity is being generated, used and how much surplus is being diverted to the immersion tank
- Can cater for multiple tanks in either shared or cascaded formats
- Only the small controller fitted at the MCU, perfect for when space is limited
- The Wattson technology incorporated means it can be used with a Wattson display and/or Optiplug to help reduce bills once water reaches temperature
- Suitable with gas or oil-fired boilers
- No batteries to change – the controller is powered by the mains
- Made in Britain
- 3 year Warranty
- Electromagnetic certification EMC EN61000-3-3
OSHW-MDEN-UK
Optismart® Hot Water allows for standard, predictable and repeatable installation thanks to the wireless connectivity between the controller unit and the power throttle. It has multiple timers allowing for use of off-peak tariffs to ensure the homeowner is getting the best possible rate for heating water. The colour display shows how much electricity is being generated, used and how much surplus is being diverted to the tank. Optismart® Hot Water can cater for multiple tanks in either a shared or cascaded formats. The incorporated Wattson technology means that homeowners can add an Optiplug to continue to make the most of their generated electricity once the tank is full.
- Standardised, predictable & repeatable installation
- Only the small controller fitted at the MCU, perfect for when space is limited
- Has multiple timers allowing for use of off-peak periods
- Colour display shows how much electricity is being generated, used and how much surplus is being diverted to the immersion tank
- Can cater for multiple tanks in either shared or cascaded formats
- The Wattson technology incorporated means it can be used with a Wattson display and/or Optiplug to help reduce bills once water reaches temperature
- Suitable with gas or oil-fired boilers
- Optismart bonus saving
- No batteries to change – the controller is powered by the mains
- Made in Britain
- 3 year Warranty
- Electromagnetic certification EMC EN61000-3-3
How it works
Optimmersion® is a proportional controller to add to a Solar Power installation. It diverts any surplus electricity to the immersion heater when surplus power is available.
Simple to install, it supplies variable power depending on the excess electricity being generated. It automatically harvests surplus electricity and all of it is used to heat water and maintain temperature level.
It is installed between the immersion tank element and the mains, no modification to the existing immersion element, hot water cylinder or pipework needed.
Optimmersion® uses both directional current transformers and voltage sensors to constantly measure the power being generated by Solar PV and also power in use in the home. The clever Optimmersion® system regularly calculates the excess electricity which varies the power to the heating element. The advanced electronics provides a true variable output.
Downloads
- For technical specifications and installation information such as multiple immersion tanks and three phase environments, please visit our Support section.
More info
- The bright and attractive colour display also shows you at a glance what you are saving and what you are using.
- Shows daily total of energy saved
- Suitable for installation at the same time as the Solar PV system or afterwards
- Uses existing immersion heater
- Can control power to any resistive load up to 3kW
- Simple power monitoring using AC current clamp
- Automatic low cost electricity boost setting (eg. Economy 7)
- Manual booster control
- UK manufactured
- 3 year product warranty
- Part of the Wattson eco-system
- Standalone product for non-Wattson users
- Can divert energy to more than one heating element
- Enhanced flexibility with a choice of four product versions
to suit your home’s wiring set up.
- Complies with the following European standards: EN 61326-1, EN 61000-3-2, EN 6100-3-3, EN 60335-1:2012. Click here for more information.
Additional Products
- Optiplug. Make the best use of your surplus electricity once your tank is at temperature with this smart socket to run your appliances automatically.
- Optismart® Hot Water. A cost effective solution to share the benefits of Wattson Solar Plus and Optimmersion® Wireless all in one!
