© Ecotec Heat Pumps Ltd
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Installation Manual & User Guide
7
Connecting to heating system
A particle filter should be fitted on the water inlet
side as close to the heat pump as possible. The
particle filter removes dirt and debris that can
damage the unit. Therefore, it must always be
fitted on the incoming hot pipe to remove debris
before entering the heat pump.
We recommend using flexible hoses at the inlet/
outlet connections to avoid vibration transfer
between heat pump and pipe system.
Shut off valves and drain valves should be fitted to
facilitate maintenance and draining incase of
prolonged power failures
Pipe diameter should be matched to water flow
requirements, (see product specifications)
Outdoor pipes must be properly insulated with
material that will not absorb moisture. Minimum
recommended insulations thickness is 19mm (3/4”)
Sensor cables and communication lines should be
separated from high voltage cable by 20cm (8”) to
prevent interference.
The total water volume in the heating system
should be at least 20 liters of water per kW of
heating output.
Flushing the heating system
Ensure that the pipe system has been thoroughly
flushed-out to remove debris before connecting the
heat pump. Poor water quality in the heating
system can reduce heating efficiency and cause
damage to the heat pump. Leaks in the system can
allow air to enter the lines. Oxygen in water lines
causes corrosive sediments such as magnetite which
has an abrasive effect on valves and heating
components.
Heating systems that require regular filling, or where
heating water is not clear when drained, require
remedial measures before installation; such as
fitting filters and vents. Do not use treatment
additives except agents for raising the pH level in
heating line water.
