Setback Operation - KSB CalioTherm Pro 25 Installation & Operating Manual

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7 Operation

7.4.2 Setback operation

Function
If the Setback Operation function is enabled, the pump set identifies minimum heat
demand when the fluid temperature sinks continuously. The pump set automatically
reduces the setpoint. When heat demand rises again, the pump set reverts to its
previous setpoint.
If the Setback Operation function is active, the pump set switches between night
mode and day mode.
The night mode is activated in the following cases:
▪ The fluid temperature sinks by 15 °C within 2 hours.
The day mode is activated in the following cases:
▪ The fluid temperature rises by 3 °C.
▪ The pump set has been in night mode for more than 7 hours.
Settings
The Setback Operation function and its settings are made via the KSB ServiceTool and
are described in the KSB ServiceTool supplementary operating manual (reference
number 1157.801).
Table 37: Enabling and disabling Setback Operation
Step 1: Activating the additional function
▪ Press and hold the control button for 10 seconds.
– The selection range for the additional functions is active.
Step 2: Selecting Setback Operation
▪ Turn the dial and select the required function.
nd0 / nd1
Step 3: Activating the setting mode
▪ Press the control button.
Step 4: Enabling/disabling Setback Operation
▪ Turn the control button and select the required status.
– nd0 = Setback operation disabled
– nd1 = Setback operation enabled
Step 5: Confirming the settings
▪ Press the control button.
CalioTherm Pro