Samsung HHSM-G500005-1 Installation Manual page 11

• When installing the outdoor unit take great care to install as per the detailed
notes for installation locations. The Air‐to‐Water Heat Pump must have minimum
clear-ance of 300mm at the rear of the unit and 1500mm at the front of the unit.
The Air-to-Water Heat Pump must not be installed in a location without these clearanc-
es available.
• Condensation will form on the Air-to-Water Heat Pump. Ensure adequate
provisions are put in place to prevent water forming on the ground beneath the
Air-to-Water Heat Pump, resulting in a potential Health and Safety hazard.
• The Air-to-Water Heat Pump must be installed vertically and should not be tilted
at an angle.
• A 5m head circulation pump must be installed on the flow pipework and a second
5m head circulation pump must be installed on the return pipework back to the
Air‐to‐Water Heat Pump to ensure that minimum flow rates will be achieved (as
per installation schematics). Installing a single circulation pump will not guarantee
the correct flow rate. Unless using a Smart plumb cylinder or Low loss header/
Buffer vessel.
• Site visits to solve a flow rate issue due to the installation of a single pump on the
pipework are not covered under EUW and as such will incur a callout charge.
• Underfloor heating pipe centres to be equal to or less than 150mm.
• Standard radiators to be a minimum twice and up to 4 times the standard radiator
size.
• No mixing sets to be used on the underfloor heating manifolds.
• All manifolds must have an individual pump to help circulate and maintain flow rate.
• All radiator zones must have individual pump to help circulate and maintain flow
rate.
• All zones to be controlled using 2 port valves (22mm on heating zones and 28mm
on hot water zone)
• 3 port valves are not to be used.
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