Below is a list of the components you will need to buy for each of the systems:Flexible hosesThe water connections to the back of the unit are 1 inch BSP male. We recommendconnecting the water pipework with flexible hoses for ease of maintenance and to avoid anyvibration from the unit going into the house. All external pipework has to be insulated to meetMCS standards.Mounting feetThe outdoor units need to be mounted 100mm above the ground, we recommend usingrubber feet with unistrut channel. These come with mounting bolts included.An expansion vessel, pressure gauge, pressure relief valve and filling loopIn pressurised heating systems most, heating engineers use a Robokit which combines allthese components into one box. The expansion vessel is sized the same way as when usinga boiler. If you want to run the system open vented you don’t need these components, theSamsung units are happy to run at anywhere from 0 – 3Bar pressurePumpYour pump needs to supply 12l/min for the 5kW, 20l/min for the 8kW and 30l/min for the16kW unit. Don’t use a 15/60 pump use at least a 15/75 . As a rough guide.Assuming you use a plate exchanger for heating, 2 zone valves and 6 elbows, a filter ball, flowmeter and our 15-75 pump you can run measuring from the heat exchanger to the heat pump20m separation on 22mm copper for the 5kW, 20 m separation on 28mm copper for the 9kW,7.5m separation on 28mm copper for the 16kWIf you use a low loss header instead of a plate30m separation on 22mm copper for the 5kW, 30 m separation on 28mm copper for the 9kW,20m separation on 28mm copper for the 16kWIf your runs exceed this give us a call as you might need 2 pumps.Water FilterIn all cases a strainer needs to be installed in the return to the heat pump. The filters ensurethat debris/foreign materials do not cause damage to the heat exchanger in the unit, voidingwarranties.Flow switch and flow meterThe heat pumps have to have continuous uninterrupted flow at all times despite the loadingon the system, it is ideal to have a hydraulic break in the system like a buffer or a low lossheader. To measure that the flow is correct there is an ultrasonic type flow switch which needsto go into the primary pipework. The flow switch comes with the control box.The flow switch is not IP65 rated (weatherproof) and so must not be installed externally. It canbe installed in either horizontally or vertically with at least 150mm of straight pipe either side,connection is compression fittings. The wire is 1.5m long 4 core, it needs to connect into thePCB. This wire can be extended to suit.We recommend a flow meter is installed in every system rated 0-40l/minWhat the unit comes with and what you willneed