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Sorry - your browser does not allow this image to be loaded - please download the offline website from the Home page to view Connecting FHT Stoves to heating systems

The FHT Stove can be connected in various ways, including directly into an existing heating system. If you are visiting this page as either an existing 'back boiler' user looking for a replacement or interested in installing a new system, then either the direct connection to your existing heating system or the independent loop are relevant.

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
- Water pumped from the CH return through the FHT Stove heat exchanger and then to the CH flow
- 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
- Although this configuration will work with any existing central heating system, optimum performance can be obtained if the central heating boiler control recognises when the stove is supplying heat
- Discrete water connections can be made in small bore tubing

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Independent heating circuits

- FHT Stove is the only source of heat (more than one FHT stove can be in the circuit if required)
- Pump and expansion vessel or header tank required
- Radiators can be controlled with TRVs or on/off valves - impossible with 'back boiler' systems
- FHT Stove can cycle on and off thermostatically like a central heating boiler when insufficient heat load is available (TRVs closed down)
- Radiators at the same level, lower than and/or higher than the stove can be supplied with heat
- Fail-safe operation - stove heat passes safely to the room if the power supply fails
- Connection via conventional pipe bores (22/15/10mm) - no need for wide bore pipes

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Connection to thermal stores and other
renewable heating technologies

- Simple link to thermal stores via a pressurised (expansion vessel) or open-vented loop
- Other Renewable heat sources (Ground-Source/Air-Source Heat Pumps and/or Thermal Solar) can be connected in the same or other circuits to the thermal store or directly to the radiators/under-floor system
- Potential high temperature 'top up' for low temperature systems
- Particularly good match to low-cost air-source heat pumps where the most likely stove burning periods correspond to poorest ASHP efficiency
- Ideal for low energy New Build and Refurbishment projects where less room heat is required from the stove

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Distributing stove heat across open-plan spaces

- For the 'grand design' with large open-plan living spaces, the FHT Stove can help distribute the stove output around the space
- Either an independent circuit or as part of the central heating system
- Particularly good match to underfloor heating where the lower water temperatures allow more heat to be collected from the stove

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Simple connection to hot water (immersion) tanks

- 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

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Off-grid homes, boats, DC systems

- Off-grid systems relying on DC electrical supplies (batteries)
- Fail-safe operation of the FHT Stove ensures safe operation when DC pumps may fail due to run-down batteries
- Many off-grid applications have to distribute heat at the same level as the stove, which cannot be safely achieved by back boiler systems

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FHT Stoves is a trading name of KinXerG Limited
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