Siemens LMU54 Series - Page 36

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Siemens Building Technologies Basic Documentation LMU54... / LMU64... CC1P7494en
HVAC Products 3 Functions 07.11.2002
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:
LPB clip-in DHW sensor 1
TbwIst1
RU
QAA73...
DHW setpoint
TempAnfoVeBw
DHW demand Compensation
variant
DHW circuit
Not present or
DHW locked
Not present Don’t care TbwSmin Locked Locked
Not present or
DHW locked
Present Not present TbwSollMmi Always Fixed value control
Not present or
DHW locked
Present Present
TdhwSet
3)
RU- DHW RU-compensated
Not present or
DHW locked
Present Present TbwSollMmi
3)
RU- DHW
RU- / HMI-
compensated
Present and DHW
released
1)
Not present Don’t care
TbwSmin
(DHW heated by RVA)
LMU-internal DHW
heating locked
Locked
Present and DHW
released
1)
Present Not present TbwSollRva RVA-DHW RVA-compensated
Present and DHW
released
1)
Present Present TbwSollRva RVA-DHW RVA-compensated
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»
With HMI AGU2.310
Legend