Centrometal PelTec 12-48 Technical Instructions page 20

Temperature (domestic hot water and accumulation tank)
2.4 TEMPERATURE DHW
Possible selection:
default: 50°C
Minimum: 40°C
Maximum: 80°C
Temperature setting options of DHW (domestic hot water).
2.5 DIFFERENCE DHW
Possible selection:
default: 5°C
Minimum: 4°C
Maximum: 40°C
The possibility of setting domestic hot water diference.
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Technical instructions REGULATION PelTec / PelTec-lambda