Thermal Storage Tank Types

McDonald Water Storage is one of the UK's leading thermal storage tank manufacturers with a range of models to suit your requirements.

Whether you are working on a selfbuild project using renewable energy sources or looking to replace an existing thermal storage tank system, we can design and manufacture the optimum solution.
 
Download our Thermal Store Brochure

 

Thermal Store Multifuel

Thermal Store – Multifuel Combination System

The Multifuel Thermal Store Combination System allows the incorporation of multiple heat sources, including solid fuel, solar, biomass and heat source, into a single tank with an inbuilt feed and expansion tank. 

Using your solid fuel appliance along with solar thermal, the system can be heated without the need for gas, oil or electric. Only at times where the other heat sources are unable to cope with demand, will the boiler come on to top up the temperature. 

The Multifuel combination system can be installed anywhere in the property, normally the top floor or attic. And providing the primary feed and expansion tank is at the highest level, the entire system can remain open vented. The minimum gap between highest radiator and base of header tank is 500mm. 

If this minimum distance cannot be achieved, then a sealed heating coil can be installed in the thermal store.

 

 

Thermal Store Multifuel Cylinder

Thermal Store – Multifuel Cylinder System

Our THERMFLOW Multifuel Thermal Store cylinder allows the incorporation of multiple heat sources, including solid fuel, solar, biomass and heat source, into a single tank. 

The system can be heated without the need for gas, oil or electric by using your solid fuel appliance along with solar thermal. Only at times where the other heat sources are unable to cope with demand, will the boiler come on to top up the temperature. 

The multifuel cylinder system can be installed anywhere in the property and is linked with a separate copper feed and expansion tank which is normally located in an attic space.

 

 

Thermal Store Open Vented BoilerThermal Store - Open Vented Boiler Combination System

Our THERMFLOW Open Vented Boiler Combination thermal store accepts heat input from an open vented boiler to provide domestic hot water and central heating throughout the property. 

The combination tank is best installed on an upper floor or in a loft or attic space keeping the built-in primary feed and expansion tank at the highest level, keeping the entire system open vented. If the gap between highest radiator and base of header tank is less than 500mm then you will require a sealed heating coil. 

Our Open Vented Boiler Combination thermal store is the ideal alternative to a combi boiler, with the major benefit being high flow rate, mains pressure hot water with increased reliability and no annual service.

 

 

Thermal Store Open Vented BoilerThermal Store - Open Vented Boiler Cylinder

Our THERMFLOW Open Vented Boiler Cylinder thermal store is designed to accept heat input from an open vented boiler to provide domestic hot water and central heating throughout the property. 

The cylinder type can be installed almost anywhere in the property and requires a separate high temperature header tank installed at the highest point in the property, keeping the entire system open vented. 

The Open Vented Boiler Cylinder thermal store is the ideal alternative to a combi boiler, with the major benefits being a high flow rate, mains pressure hot water with increased reliability and no annual service requirements.

 

Thermal Store Sealed System Boiler Combination

Thermal Store - Sealed System Boiler Combination

Our THERMFLOW sealed system boiler combination thermal store is designed to accept heat input from a pressurised boiler and can provide domestic hot water and central heating throughout the property. 

The combination tank is best installed on an upper floor or in a loft or attic space keeping the primary feed and expansion tank at the highest level, to keep the central heating system open vented. 

If the gap between highest radiator and base of header tank is less than 500mm then you will require a sealed heating coil incorporated into the thermal store.

 

 

 

Thermal Store - Sealed System Boiler Cylinder System

Thermal Store - Sealed System Boiler Cylinder System

Our THERMFLOW sealed system boiler cylinder thermal store is designed to accept heat input from a pressurised boiler and can provide domestic hot water and central heating throughout the property. 

The cylinder system can be installed almost anywhere in the property and requires a separate high temperature header tank installed at the highest point in the property, keeping the entire system open vented.

 

 

Electric Thermal Store

Electric Thermal Store Combination System

Our THERMFLOW Electric Thermal Store Combination System is designed to provide hot water only. The system features a minimum of 2no 3kW immersion heaters, normally with one connected to the off-peak, cheaper electricity while the other immersion heater can be used to boost the cylinder temperature as required. 

The Electric Thermal Store Combination System can be installed almost anywhere within the property, provided an overflow pipe can be safely routed away. 

Commonly used in apartments where an unvented cylinder cannot be installed due to strict G3 guidelines surrounding discharge pipework.

 

 

Pressurised Thermal Store

Pressurised Thermal Store

Our THERMFLOW Pressurised thermal store is designed to accept heat input from a pressurised boiler, often a biomass boiler, and can provide domestic hot water and central heating throughout the property. 

It allows the store to be installed almost anywhere in the property and creates a fully pressurised system, which requires a suitably sized heating expansion vessel. 

Where a boiler is the only heat source and locating a header tank is not an option this could be the ideal solution. 

Consideration must be taken for the relief valves that come factory fitted and will operate the same as an unvented cylinder.

 

 

 

Rectangular Thermal Store

Space Saving Rectangular Thermal Store

Our thermal store range, excluding the pressurised thermal store model, can also be manufactured and supplied as a rectangular tank. 

These units offer fantastic space saving solutions, typically providing the same capacity in up to 27% less space. 

 

Download our Thermal Store Brochure