Baxi LUNA HT 1.280, Installation, Operation And Maintenance Manual

Page: 87 / 144

Fig. 20: Release according to time switching programme 4 (example)
Charging priority
(1630)
This function ensures that the boiler capacity is primarily made available for DHW
in case of simultaneous capacity demand by room heatings and DHW.
- Absolute priority : Mixer and pumped heating circuits are blocked until the DHW
has been heated up.
- Sliding priority : Should the boiler capacity not be sufficient to heat up DHW, mi-
xer and pumped heating circuits will be restricted.
- No priority : Charging DHW is carried out in parallel with heating operation.
- Mixer heating circuit sliding, pumped heating circuit absolute : The pumped hea-
ting circuits are blocked until DHW has been heated up. Should the boiler capa-
city not be sufficient, also the mixer circuit will be restricted.
Legionella function
(1640)
Function to kill legionella germs by heating up to the set legionella function set-
point (see programme number 1645).
- Off : Legionella function is switched off.
- Periodisch : Legionella function is repeated periodically, depending on the set va-
lue (prog. no. 1641).
- Fixer Wochentag : Legionella function will be activated on a certain weekday
(prog. no. 1642).
Legionella funct periodically
(1641)
Setting the interval for the legionella function periodically (recommended setting
in case of additional drinking water heating by solar plant in connection with a st
tankmixing pump).
Legionella funct weekday
(1642)
Selection of the weekday for the legionella function fixed weekday (factory set-
ting).
Legionella funct time
(1644)
Setting the start time for the legionella function. The legionella function will be
carried out at the first release of the DHW preparation with the setting "---".
Legionella funct setpoint
(1645)
Setting the temperature setpoint for killing the germs.
Legionella function duration
(1646)
With this function, the time will be set, during which the legionella function set-
point is activated to kill germs.
If the colder storage temperature rises above the legionella function setpoint by -1
K, the legionella function setpoint is assumed as met and the timer starts running.
If the storage temperature drops by more than the switching diff2 K be-
low the required legionella function setpoint , the duration has to be met again. If
no duration has been set, the legionella function has been met immediately on re-
aching the legionella function setpoint .
Programming
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