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2.2 Flow Direction
The Elecro Heat Exchanger should be connected to the two independent water circuits as follows:
1. Connection to Water Filtration Circuit (Secondary)
The Heat Exchanger should be plumbed in-line, after the filtration pump and filter and before any water
treatment equipment. It must be fed with clean water. Weed/debris should not be allowed to enter the Heat
Exchanger. The Heat Exchanger should be installed as close as possible to the boiler to minimise heat
loss.
To assist with correct air purging and to ensure that the Heat Exchanger remains full of water during
operation, it should be installed at the lowest point in the filtration circuit.
If the Heat Exchanger is installed in a vertical plain, it is essential that the pool/pond water (secondary
circuit) enters low and exits high.
2. Connection to Heating or Cooling Circuit (Primary)
The Heat Exchanger should be connected directly to the primary heating circuit i.e. boiler via the provided
1” BSP male connectors, see diagram below.
NOTE: The circulation pump of the primary circuit should be controlled by a thermostat, which should
be connected via the filtration pump to allow heating only when the filtration pump is running.
Air bleed valves should be installed at the high points of the primary circuit. To ensure correct temperature
detection, it is essential that the thermostat / thermistor is positioned at the water inlet of the Heat
Exchanger.
NOTE: The Thermostat Control is only included with the ‘Optional’ fully equipped kit. The standard unit
is supplied only with a Thermostat pocket.
Care should be taken not to over tighten any connections, as this could result in damage to the Heat
Exchanger.