Heat Pump Manual
HOT WATER CIRCUIT
The hot water circuit consists of
1. Condenser heat exchanger – this may be a plate heat exchanger, a coaxial heat
exchanger or shell and tube
2. Flow switch or flow meter
3. Copper pipe work
The heat pump will run whenever called unless the controller detects a drop in flow.
It is important to ensure that any water treatment is passive to the wetted parts of the system
which include
· Stainless Steel
· Copper
· High Density Polyethylene
· Brass
· ABS Plastic
· Nitrile Rubber
The water to water models have a water sourced evaporator that is connected to – typically –
the return condenser water from the installed chillers. This evaporator can have either a plate
heat exchanger or a coaxial heat exchanger. These heat exchangers have water flowing
through them that must be passive to the materials used. These include
· Stainless steel – 316
· Copper
· Brass
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