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Freeze protection
• Even if the pipes have been insulated, the piping can freeze if the surrounding
temperature gets below zero. This could cause damage to the equipment and
piping so make sure the appropriate freeze protection measures are taken.
• Follow the instructions in the installation manual provided with the freeze protection
heater.
• After completion of the piping work inspect the plumbing for any water leaks from
the joints before carrying out freeze protection.
• Wrap the freeze protection heater up to the water connectors of the main unit.
• Ensure the freeze protection heaters are connected to 24 hours continuous power
supply.
• It is important to fully explain how to use and operate the freeze protection heater to
the customer.
• When turning off the power because the unit will not be in use, any water must be
removed from the unit and piping.
.
Note: A heater that checks the outside temperature may not detect the temperature
of the piping correctly. It is important to use a heater that directly detects the piping
temperature.
Figure 8: Details on wrapping thermal insulation around the piping connector
Pipe wrapping
Heater
Insulation
Tapes
Band
Thermal
Insulation
Sanden Heat Pump – Installation Manual
Page 10 of 32
Connection wrapping
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