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Heat Pump Installation

  • Mounting The Heat Pump

    Biomass Installation

    The installation engineer will at first walk through with the customer, the details and locations of all equipment to ensure that the information taken in the site survey is accurate. The heat pump can either stand on the floor or be wall mounted. Whichever option is taken accommodations are required to limit noise made by vibration and also soakaways for the condensate produced during operation in colder temperatures.

    If floor mounted the pump is mounted onto anti vibration rubber "feet" which are ideally stood onto hard or gravel surface with suitable drainage provided for. When wall mounted, specialist antivibration mounting brackets are used, drainage is handled in the same way as floor mounted if mounted low down, alternatively if mounted high on a wall the bracket can have a drip tray with drain installed. Flexible hose connections for the flow and return pipework prevent vibration travelling into the property.

  • Installation of the Heat Pump Compatible Cylinder and Hydraulic Controls

    Biomass Installation

    In almost all cases a new heat pump compatible cylinder will be required as part of the system as the lower flow temperatures and increased flow rates require larger diameter coils with increased surface area to improve heat transfer and minimise the flow resistance. The installer will remove the existing cylinder and install the new cylinder in its place

    Installed alongside the cylinder are the hydraulic controls including 2 port heating/DHW zone valves, high efficiency and powerful circulation pumps, magnetic cleaners, in line strainers, low loss headers (if required) flow meters and flow switches. All these components allow the heat pump control unit to distribute the heated water to radiators, underfloor heating systems and domestic hot water cylinders while constantly filtering and removing impurities from the circulating fluid.

    In all cases the heat pump and heating distribution system will be unvented and pressurised so will have an expansion vessel instead of a header unit. I most cases the cylinder will also be unvented. Unvented systems are less susceptible to corrosion due to air in the system, unvented cylinders provide mains pressure hot water throughout the property.

  • Wiring the installation

    Biomass Installation

    Once the plumbing work is complete the heat pump and control unit needs to be wired. The heat pump has full control of the heating system and uses and array of internal and external temperature and flow sensors to maximise the efficiency of the heat pump through weather compensation software. Effectively, the heat pump will decide the optimum temperature for the heating circuit heat the property without wasting energy making the water hotter than it needs to, this will depend upon the external atmospheric temperature and the output of the heating circuit.

    A dedicated mains supply is provided to the control unit position close to the cylinder and also one to the external heat pump unit, the control unit inside communicates with the heat pump outside with a single comms cable. If radiators are used a programmable control thermostat is installed in an open area such as a hallway, alternatively if an underfloor heating system is in place a "run" signal is taken from the underfloor heating control unit to activate the heating system.

  • Filling, Testing and Commissioning

    Biomass Installation

    Initially the system is filled and pressurised with water only to check for leaks, run the pumps and flush the system. Once all the joints are checked and the pressure remains at a constant the system is filled and pressurised with a mix of water, glycol antifreeze and inhibitor. An electric flush and fill pump is used to complete this process, this is the only way to be sure that no air gets trapped in the system. Antifreeze is required as the heating circuit runs outside to the heat pump so is susceptible to low temperatures when not in operation.

    Various "field" settings are programmed into the heat pump which individualise it to the specific requirements of the installation and the property, all the sensors and components are individually tested, the system is then run for a period of time to test heat output to the radiators/underfloor heating and the cylinder. Once all these procedures are complete, any required pipe insulation is fitted alongside the completion of all paperwork.

    The whole system is now fully commissioned to MCS standards, with all the results submitted to the government body “Gemserve” so an MCS certificate can be issued to enable you to claim the RHI. This process can only be undertaken by MCS approved companies like CTS Renewables, and is of vital importance for you to get a return on your investment.