Siemens AVS75.39 Series User Manual page 57

Boiler controller
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Extension: 24-hour
heating limit
Siemens
Building Technologies
The "24-hour heating limit" function (line 732) switches the heating system off when
the actual outside temperature has risen to a level of one adjusted differential
below the current operating level. Setting an "extended 24-hour heating limit"
defines when to turn on heating again.
Extension 24-hour heating limit = No
The heating is switched on again when the present actual outside temperature
(TA) drops again below the adjusted differential minus 1 K.
The building dynamics (building structure and insulation) are not taken into
consideration.
Extension 24-hour heating limit = Yes
The heating is switched on again when the mixed actual outside temperature
(TAgem) drops again below the adjusted differential minus 1 K.
The building dynamics (building structure and insulation) are taken into
consideration.
T
TA
TRw
THG
1
733 Ja
0
1
733 Nein
0
733
Setting Yes / No in operating lines 733, 1033 or 1333
TRw
Room temperature setpoint
TA
Actual outside temperature
TAgem Composite outside temperature
THG
24-hour heating limit
T
Temperature
t
Time of day
User manual RVS43.345
The settings in detail
TAgem
1°C
t
CE1U2354en_021
57 / 239
2013-09-02

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