This enables you to heat up water and have hot water running from a tap.
It wraps around the bottom flue section and sits on top of the stove. It has a newly positioned tap for easier usage.
You can use a kettle on the stoves, but using the water heater means that more of the top plate is free for your other pots and pans.
The water heater holds 3 litres of water so nice and big.