The recently launched iHE commercial combination boiler from Potterton Commercial is the only one of its type on the UK market, producing space heating and hot water from a single generator and a tank, both enclosed within one cabinet. The condensing heat engines with premix modulating gas burners, achieve 96% gross efficiency and heat hot water via stainless steel heat exchangers. The appliances are room sealed for use with either vertical or horizontal flue systems.
There are two models within the range – one incorporating two 50kW heat engine modules providing 100kW of space heating, the other having three 50kW heat engine modules, offering a space heating capability of 150kW. Both have a similar capacity stainless steel cylinder, storing 300 litres of domestic hot water, and achieve impressive recovery rates of 1,520 litres/hour and 2,240 litres/hour respectively ∆T50oC. In line with requirements for unvented stored water, both WRAS and G3 approvals have been applied for.
Most importantly, with due regard to the financial and legislative drivers that are encouraging businesses to use energy more efficiently, the iHE can integrate hot water production with solar thermal, air source and ground source heat pump technology for pre-heat, thereby minimising the input required from fossil fuels.
Again, focusing on improved efficiency and in common with the latest Potterton Commercial condensing boiler ranges, the new iHE has all the versatile control options for space heating and hot water profiles, including weather compensation with optimum stop and start, frost protection, module sequencing and load sharing.
The iHE offers the smaller commercial end user a cost effective way of adopting a highly efficient integrated system with renewables. A prefabricated heating and hot water unit in its simplest form, these condensing commercial combi boilers are suitable for installation in small hotels, restaurants, residential care homes, retail shop units, health centres, day care centres, veterinary practices, etc.
This combined heating and hot water generator reduces capital outlay for a project, allows procurement from a single source, reduces installation time and is designed ready to install and to be compatible with low carbon technologies. The stainless steel plate heat exchanger reduces the incidence of scaling, though a water softener should be fitted to maintain the performance efficiency of the entire system including protection of shower heads. The iHE weighs from 315kg, has compact dimensions of 1970H x 1450W x 685D and carries a minimum two year warranty.