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InstallationIndications, functions and optionsMessages Commissioning Operation and function
Maximum temperature limitation heat exchange
MX3O / MX3F
Maximum temperature limitation
Adjustment range: 0.0 … 95.0 °C [30.0 … 200.0 °F]
Factory setting:
MX3O: 60.0 °C [140.0 °F]
MX3F: 58.0 °C [136.0 °F]
S4 is used as the reference sensor for the maximum temperature limi-
tation.
The maximum temperature limitation function provides a maximum temperature
setting, usually to reduce scald risk in a store. If MX3O is exceeded, relay 2 is
switched off until the temperature at sensor 4 falls below MX3F.
Minimum temperature limitation heat exchange
MN3O / MN3F
Minimum temperature limitation
Adjustment range: 0.0 … 90.0 °C [30.0 … 190.0 °F]
Factory setting (only if Arr = 2):
MN3O: 5.0 °C [40.0 °F]
MN3F: 10.0 °C [50.0 °F]
S3 is used as the reference sensor for the minimum temperature limi-
tation.
The minimum temperature limitation function provides a minimum temperature
setting for the heat source in system 2. If the temperature at sensor 3 falls below
MN3O, relay 2 is switched off until the temperature at sensor 3 exceeds MN3F.
Both switch-on and switch-off temperature differences DT3O and DT3F are valid
for the maximum and minimum temperature limitation.
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