Siemens LMU54 Series Basic Documentation page 36

With HMI AGU2.310
LPB clip-in DHW sensor 1
TbwIst1
Not present or
Not present
DHW locked
Not present or
Present
DHW locked
Not present or
Present
DHW locked
Not present or
Present
DHW locked
Present and DHW
Not present
released 1)
Present and DHW
Present
released 1)
Present and DHW
Present
released 1)
Legend
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HVAC Products
If the DHW operating mode of the AGU2.310 is on standby, the compensation variant in
the DHW circuit is generally locked, with DHW setpoint «TbwSmin» and DHW demand
locked.
If the operating mode is not on standby, the following table applies :
RU DHW setpoint
QAA73... TempAnfoVeBw
Don't care TbwSmin
Not present TbwSollMmi
TdhwSet 3)
Present
TbwSollMmi 3)
Present
TbwSmin
Don't care
(DHW heated by RVA)
Not present TbwSollRva
Present TbwSollRva
TbwSmin Minimum DHW temperature setpoint
TbwSmax Maximum flow temperature setpoint
TbwSollMmi DHW temperature setpoint of the HMI
TbwSollRva DHW setpoint of the RVA...
TdhwSet DHW temperature setpoint of the RU
TempAnfoVeBw Resulting DHW temperature setpoint
RU-Bw DHW demand from the RU
RVA-Bw DHW demand from the RVA...
1) The information «Present and DHW released» results from the following:
• LPB clip-in is contained in the user list of the internal bus
• The connected RVA... controller delivers a DHW setpoint
2) A time switch for the DHW demand must be released via prameterization
(KonfigRg1.Schaltuhr2Bw =1 and KonfigRg1.Schaltuhr2 =1).
It is to be connected to the RU input. This function cannot be used in connection with
a RU
3) Can be selected via parameterization «KonfigRg6.2»
Basic Documentation LMU54... / LMU64...
3 Functions
DHW demand Compensation
variant
DHW circuit
Locked Locked
Always Fixed value control
RU- DHW RU-compensated
RU- / HMI-
RU- DHW
compensated
LMU-internal DHW
Locked
heating locked
RVA-DHW RVA-compensated
RVA-DHW RVA-compensated
CC1P7494en
07.11.2002