Froling TX 150 - Return Lift

Safety
Design Information
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Return lift
If the hot water return is below the minimum return temperature, some
of the hot water outfeed will be mixed in.
CAUTION
Risk of dropping below dew point/condensation formation if operated
without return lift.
Condensation water forms an aggressive condensate when combined
with combustion residue, leading to damage to the boiler.
Regulations stipulate the use of a return lift.
 The minimum return temperature is 65 °C. We recommend fitting some
kind of control device (e.g. thermometer).