Key Features

• 170L indirect unvented hot water cylinder — supplies hot water for showers, baths, and sinks
• 12 kW boiler output — reheats water in approximately 2–3 hours
• Digital display on boiler — set temperature, and see current water temperature and error codes
• Power stage indicator on boiler — shows the boiler's current operating stage
• Pre-plumbed and pre-assembled hot water cylinder — for simpler installation
• Grundfos pump and copper press fittings — built for durability
• Zoned heating control — 2 x 22mm zone valves help with insulation
• Stainless steel cylinder with polyurethane installation — retains water temperature
• 65 kg empty weight — cylinder weighs 235 kg once full to the 170L capacity
• Twin-channel programmer — schedule central heating and hot water
• Room thermostat — for precise comfort control
• EHC Pro 4 magnetic filter — protects the system from debris

Guarantee

• 5 years

What's Included

• 12 kW Heat-only electric boiler
• 170L Pre-plumbed cylinder
• Inlet control set
• Tundish
• Temperature & pressure-relief valve
• 3kW Immersion heater
• 2x 2-Port zone valve
• Grundfos circulation Pump
• System expansion vessel
• 3-Bar pressure-relief valve
• Wiring centre
• Dual cylinder stat
• Filling loop
• Automatic bypass valve
• 2x Auto air vent
• Magnetic filter
• DHW expansion vessel (loose)
• Twin-channel programmer (loose)
• Room thermostat (loose)

The CAIO12/170IND-U is a fully integrated, factory-assembled all-in-one system combining a 170-litre hot water cylinder with a 12 kW electric system boiler. It provides reliable central heating and a consistent supply of hot water in a compact, efficient package, complete with a twin-channel programmer and room thermostat. Ideal for small-to-medium-sized homes, it offers a quiet, low-maintenance and space-saving alternative to conventional heating systems.

Pre-Plumbed and Pre-Assembled Hot Water Cylinder

This unvented cylinder is supplied fully pre-assembled and pre-plumbed, including two 22 mm zone valves and standard pipework connections. The factory-fitted configuration reduces installation time and simplifies plumbing, allowing for swift and efficient system commissioning.

12 kW Electric System Boiler with Digital Display

The 12 kW electric system boiler heats the 170-litre cylinder efficiently, typically reaching the required temperature within approximately 2–3 hours, depending on the incoming water temperature.

The integrated digital display provides precise temperature control and live operational information, including fault codes if required. Simple + / − buttons make adjustments straightforward, while the power stage indicator shows whether the boiler is operating at one-third, two-thirds or full output.

Grundfos Circulation Pump

The built-in Grundfos circulation pump ensures efficient circulation of hot water throughout the heating system, maintaining even temperatures across the home. Its quiet operation makes it particularly well suited to residential properties.

Copper Press Fittings

Copper press fittings form secure, leak-free joints using modern press-fit technology, eliminating the need for soldering or brazing. Copper’s natural resistance to corrosion ensures long-term reliability and durability.

Stainless Steel Cylinder with Polyurethane Insulation

The stainless steel cylinder provides excellent corrosion resistance, reducing the risk of leaks and extending the unit’s lifespan. It is also less prone to scaling and pitting, making it suitable for areas with variable water quality.

High-density polyurethane insulation minimises standby heat loss, keeping water hot for longer, improving energy efficiency and helping to reduce running costs.

Two-Channel Programmer and Room Thermostat

The twin-channel programmer allows multiple on/off periods to be set throughout the day, enabling heating and hot water schedules to be tailored to your household routine. The room thermostat monitors the ambient temperature and signals the boiler to operate only when required, maintaining comfortable and consistent indoor conditions.

Why Choose This Combination

The 170-litre indirect unvented cylinder paired with the 12 kW electric system boiler provides a compact and dependable heating solution for small-to-medium-sized homes. It delivers ample hot water for showers, baths and taps, ensuring a reliable supply whenever it is needed.

Order today for a ready-to-install, energy-efficient and space-saving heating system, with fast delivery and minimal installation effort.