Below is a list of the components you will need to buy for each of the systems:
Flexible hoses
The water connections to the back of the unit are 1 inch BSP male. We recommend
connecting the water pipework with flexible hoses for ease of maintenance and to avoid any
vibration from the unit going into the house. All external pipework has to be insulated to meet
MCS standards.
Mounting feet
The outdoor units need to be mounted 100mm above the ground, we recommend using
rubber feet with unistrut channel. These come with mounting bolts included.
An expansion vessel, pressure gauge, pressure relief valve and filling loop
In pressurised heating systems most, heating engineers use a Robokit which combines all
these components into one box. The expansion vessel is sized the same way as when using
a boiler. If you want to run the system open vented you don’t need these components, the
Samsung units are happy to run at anywhere from 0 – 3Bar pressure
Pump
Your pump needs to supply 12l/min for the 5kW, 20l/min for the 8kW and 30l/min for the
16kW 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, flow
meter and our 15-75 pump you can run measuring from the heat exchanger to the heat pump
20m separation on 22mm copper for the 5kW, 20 m separation on 28mm copper for the 9kW,
7.5m separation on 28mm copper for the 16kW
If you use a low loss header instead of a plate
30m separation on 22mm copper for the 5kW, 30 m separation on 28mm copper for the 9kW,
20m separation on 28mm copper for the 16kW
If your runs exceed this give us a call as you might need 2 pumps.
Water Filter
In all cases a strainer needs to be installed in the return to the heat pump. The filters ensure
that debris/foreign materials do not cause damage to the heat exchanger in the unit, voiding
warranties.
Flow switch and flow meter
The heat pumps have to have continuous uninterrupted flow at all times despite the loading
on the system, it is ideal to have a hydraulic break in the system like a buffer or a low loss
header. To measure that the flow is correct there is an ultrasonic type flow switch which needs
to 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 can
be 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 the
PCB. This wire can be extended to suit.
We recommend a flow meter is installed in every system rated 0-40l/min
What the unit comes with and what you will
need
