When the owner of a luxury holiday complex in Somerset needed a reliable, low carbon heating system for 18 eco lodges to meet his sustainable vision, a local installer recommended Viessmann split heat pumps and solar thermal technology as the solution.
Recently shortlisted for a South West Tourism Excellence Award, the owner of the Mill Meadow site is now planning to install Viessmann heating systems in the next wave of
lodges to be built, saving up to two tonnes of CO2 per
home per year.
On setting up the Mill Meadow holiday resort, ownerChris Heayns wanted a green energy source to power
each of complex’s 18 luxury lodges; making the most of the space, but also providing a low carbon energy
solution. Having experienced problems with the size and design issues of previously installed ground source heat pumps, Chris looked to an alternative to meet his renewable requirements.
As each of the 1600 sq ft lodges are highly insulated and only require a 5 kW heating load, Chris Heayns
investigated using split heat pumps to complement the existing mechanical ventilation, rain water harvesting,
LED low energy lighting and underfloor heating already included in each holiday home. The Viessmann Vitocal
200-S split heat pump was recommended by local installer, Rob Leyman, due to its high coefficient of performance (COP) of up to 4.6, and ability to work with solar thermal and PV.
The Vitocal 200-S uses the free energy from surrounding air, ensuring a constant supply of heating and hot water. A 7 kW unit was specified, as having an effective heat pump working down to -3° C outside temperature was a key factor for the site due to its rural location.
4m² of Vitosol 200-T solar thermal tubes provide hot water for the lodges, which is stored in a Vitocell 300-B
300 litre DHW cylinder and a Vitocell 100-E buffer cylinder. Solar PV powers both the solar thermal and
heat pump systems with the heat pump supplying additional hot water support during times of low solar
gain. Viessmann’s Vitotronic 200 control technology makes communication between the renewable technologies possible whilst residents control the heating in their individual properties via traditional thermostats.
“Having looked at a number of alternatives to power our eco holiday homes, Viessmann Vitocal heat pumps were simply the best fit for the job,” explains Chris Heayns.
“In choosing Viessmann we knew we’d have support from start to finish, which was important to us. Having someone to work through the design phase of the
project, being on hand to visit the site and provide consulation were all services we knew we’d receive from Viessmann”.
three homes per year to the resort, which will total 18 when complete.
Vitocal 200-S Heat Pumps
Vitosol 200-T 4m² solar thermal
Vitocell 300-B 300 litre DHW cylinder
Vitocell 100-E 100 litre buffer cylinder
Heat Pump 7 kW
Vitosol solar thermal array 4m²
Mill Meadow, Kingston St Mary, Taunton, Somerset
Millfield Eco Project Ltd