Siena digital electric water heater with preprogramming – unvented


Water heaters – unvented water heater with preprogramming for domestic hot water


The Siena digital unvented water heater includes easy to use editable pre-installed programming to make life easier. You simply select the best program to suit heating needs and the Siena digital will automatically keep your hot water heating perfectly programmed.


Important safety functions like anti-legionella and temperature evolution are also included, along with a ceramic heating element to heat quickly and efficiently. With a magnesium anode, ceramic heating elements and CFC-free insulation foam, the Siena digital unvented water heater is a safe and reliable product that ensures hot water at the right temperature when you need it. Available in a tank capacity of 80 litres or 150 litres.


· Low consumption
· Anti-legionella and energy saving functions
· 4 editable pre-installed programs
· TFT screen
· Exclusive thermal break system


Trade price from £408 (excluding VAT).

Rointe domestic hot water heaters are manufactured with high-quality components and include extended guarantees for your peace of mind.


Our new range of innovative unvented water heaters is the ideal solution to meet your domestic hot water needs. With five new advanced products including connected, digital, compact and instant along with an air source heat pump, ranging from energy class A to C. From special enamel to protect the interior tank to an exclusive thermal break system, we ensure their reliability under any circumstance. They include the latest advances in safety and consumption measurement.


The Siena digital water heater is the perfect solution for your domestic hot water needs and includes smart energy programming, designed to make your life easier. With four lifestyle programs already installed, you simply select the program that best suits your needs and the Siena digital will automatically keep your heating perfectly programmed using infrared communication. It also includes important safety functions like an exclusive thermal break system, plus anti-legionella function. Mandatory installation kit sold separately.

Ceramic heating elements

Vitrified steel tank

Protective magnesium anode

Thermal break system: reduce energy losses by up to 16%

4 editable pre-installed programs

TFT screen

User mode: limit working temperatures

Infrared communication

Compatible with AIR Control remote (sold separately)

Manual / Automatic function

Anti-legionella function

Temperature evolution function

24/7 programming

Comfort / Eco / Anti-frost modes

Installation kit sold separately

Product Reference SWI---DHWC4
A - Diameter 470 mm
B - Height (80 L | 150 L model) 777 mm | 1,297 mm
C - Installed depth 487 mm
D - Distance between connections 100 mm
Load profile (80 L | 150 L model) M | XL
Empty weight (80 L | 150 L model) 25.2 kg | 38.5 kg
Water connection 1/2"
Nominal power 2,400 W
Voltage 230 V ~
Current 10.4 A
Magensium anode x 1
Maximum working pressure 8 bars
Tank insulation CFC-free polyurethane foam
Protection grade IP24
Finish: tank White RAL 9003
Finish: control panel Black RAL 9005
EAN code - 80 litres model 8436045913555
EAN code - 150 litres model 8436045913135

Our guarantees are the best on the market.

Customer satisfaction always comes first for us, along with offering a high-quality product. That’s why this product is guaranteed for 5 years on the tank and 2 years on the electronics.


Technical Support

If you have any problems with your product or if you need help, call our Technical Support team on 0203 321 5929, send us an email to or send a message using the form below. We will be in touch as soon as possible to help you.


Asistencia técnica

  • Protective grill – for D Series radiator

  • Insulation system – for Erko underfloor heating

  • CT.2 – digital programmable thermostat with Wi-Fi connection

  • ST.2 – digital programmable thermostat


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