Connecting the FHT Stove
to Heating Systems
The FHT Stove is unique!   Designed for safe, simple, direct connection into any central heating system. Heat transfer can be turned ‘on’ or ‘off’ whenever required, giving unparalleled control over comfort.
FHT Stove impression
Around half the stove heat output can be diverted to the central heating circuit at the flick of a switch, so reducing the heat output to the room and sending excess heat to other rooms.

It can work on independent circuits or in parallel with your heating system, including combi boilers, low temperature heat pump circuits and under-floor heating systems.

No special circuits are required. No ‘link up’ or gravity fed systems need be installed. Connects directly to existing or new systems at low cost.

Some of the possible connection configurations are illustrated below. For more details please visit the rest of the website, or you can download a copy of the entire website as a formatted pdf file if you prefer - right click on the above link and select ‘Save target as...’ to save the file.

Direct connection to an existing central heating system

Connected like a radiator to the nearest central heating flow and return pipes
Connects to pressurised or open-vented heating systems
Pump allows the FHT Stove to operate either independently of the CH boiler or in parallel with the CH boiler
Non-return valve prevents back flow from the CH system pump when the fan is off
FHT Stove can be integrated with existing central heating control for optimum benefit
Discrete water connections can be made in small bore tubing

Central Heating Connection

Independent Connection


Independent heating circuits Up Arrow

FHT Stove is the only source of heat
Pump and expansion vessel or header tank required
Radiators can be controlled with TRVs or on/off valves if required
FHT Stove can cycle on and off thermostatically like a central heating boiler
Radiators at the same level, lower than and/or higher than the stove
Connection via conventional pipe bores (22 or 15mm)

Connection to thermal stores and other Up Arrow
renewable heating technologies

Simple link to thermal stores via a pressurised or open-vented loop
Other Renewable heat sources can be connected in the same system
High temperature 'top up' for low temperature systems
Good match to low-cost air-source heat pumps
Ideal for low energy New Build and Refurbishment projects
Renewables Connection

Grand Design Connection



Distributing stove heat across open-plan spaces

For the 'grand design' with large open-plan living spaces
Either an independent circuit or as part of the central heating system
Good match to underfloor heating systems



Simple connection to hot water (immersion) tanks Up Arrow

No header tank required (can be pressurised)
Hot water tank can be located anywhere - not restricted to being above the stove
Water temperature can be thermostatically controlled - fail-safe operation
Demand Side Management option for Electricity Suppliers - displaces electric immersion heating on the coldest days of the year
Good match for reducing stove heat output at the end of the evening to heat water for the morning
Hot Water Connection


Off-grid homes, boats, DC systems Up Arrow

Off-grid systems relying on DC electrical supplies (batteries)
Fail-safe operation of the FHT Stove ensures safe operation with battery systems
Distribute heat at the same level as the stove - boats and eco-cabins


Off-Grid Connection