83
Start-up - initial settings and functions
1 DHW MODE SETTING 5/5
1.21 PUMP_D DISINFECT RUN
NONE
1.22 ACS FUNCTION
NONE
1.23 t_ANTILOCK
5 MIN
ADJUST
Fig. 77
1.21 PUMP_D DISINFECT RUN (standard: YES - settable: NO/YES)
Enables activation of the recirculation pump even during the anti-legionella cycle. Activation of the function
is recommended. It becomes mandatory if T5 is located below the additional heater (TBH).
1.22 ACS FUNCTION (standard: NO - settable: YES/NO)
Reserved parameter, do not change.
1.23 t_ANTILOCK (standard: 5 - settable: 0/60)
Enables a safety opening cycle of all system valves (SV1, SV2, SV3), defining their opening minutes if they
remain closed for more than 24 hours.
8.2.2 Cooling mode settings
MENU > FOR SERVICEMAN > 2. COOLING MODE
2.1 COOL MODE (standard: YES - settable: YES/NO)
Enables/disables Cooling mode.
2.2 t_T4_FRESH_C (standard: 0.5 - settable: 0.5/6)
Sets the time when the unit updates the climate curve, adjusting it according to the outdoor air temperature.
2.3 T4CMAX (standard: 52 - settable: 35/52)
Defines the maximum outdoor air temperature for which the unit can operate in Cooling mode. This value
should clearly be changed if the unit is used for process cooling.
2.4 T4CMIN (standard: 10 - settable: -5/25)
Defines the minimum outdoor air temperature for which the unit can operate in Cooling mode.
This value should clearly be changed if the unit is used for process cooling.
2.5 dT1SC (standard: 5 - settable: 2/10)
Defines the range between the water supply temperature (T1) and the setpoint (T1S) within which the unit
starts to operate in Cooling mode. The heat pump starts when T1 ≥ T1S + dT1SC and stops when T1 ≤ T1S.
Fig. 78
This value is strongly related to the minimum permissible water content of the circuit. A narrower control
band can be accepted with a high water volume.
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