2.7.5 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 temperature control.
Condensation water forms an aggressive condensate when combined with
combustion residue, leading to damage to the boiler.
Take the following precautions:
❒ Regulations stipulate the use of a return temperature control.
➥ The minimum return temperature is 60 °C. We recommend fitting some
sort of control device (e.g. thermometer).
Safety
2
Design information
Operating Instructions TX 200-250 | B1060217_en
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