Configuration Of The Heating Circuits - Siemens LMU54 Series Basic Documentation

Configuration of the
heating circuits
Parameter
KonfigHks
0
1
2
10
11
12
20
21
22
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Siemens Building Technologies
HVAC Products
The RU is a multifunctional unit for 1 or 2 heating circuits. For that purpose, it has a
main heating circuit (heating circuit 1) and - only with the QAA73... - a secondary
heating circuit (heating circuit 2).
The choice which of the RU's heating circuits acts on which of the LMU's heating circuits
is made with the «KonfigHks» parameter. This parameter is conceived such that it
allows the RU's influence on heating circuits 1 and 2 of the LMU... to be defined
separately.
For both heating circuits of the LMU..., the following choices exist:
• No RU influence (0)
• Controlled by the main heating circuit of the RU (1)
• Controlled by the secondary heating circuit of the RU (2)
When no RU is used, this parameter is of no importance.
Control of an LMU's heating circuit by the RU presupposes that the controlling heating
circuit in the RU is not deactivated (the heating circuits of the RU can be deactivated by
changing the slope).
If, in the RU, the heating circuit selected for the control is deactivated, the action is the
same as with setting «No RU influence» using the «KonfigHks» parameter.
The following assignments can be made:
RU influence on RU influence on
heating circuit 2 heating circuit 1
of the LMU6x of the LMU6x
0
0
0
1
1
1
2
2
2
Basic Documentation LMU54... / LMU64...
3 Functions
Impact
Both heating circuits of the LMU... are without RU
0
influence
Hz2 without RU influence, Hz1 is controlled by the
1
main heating circuit of the RU, if RU is present
Hz2 without RU influence, Hz1 is controlled by the
2
secondary heating circuit of the RU, if RU is present
Hz1 without RU influence, Hz2 is controlled by the
0
main heating circuit of the RU, if RU is present
Both heating circuits of the LMU mare controlled by
1
the main heating circuit of the RU, if RU is present
Hz1 is controlled by the secondary heating circuit of
2 the RU, Hz2 by the main heating circuit of the RU, if
RU is present
Hz1 without RU influence, Hz2 is controlled by the
0
secondary heating circuit of the RU, if RU is present
Hz1 is controlled by the main heating circuit of the
1 RU, Hz2 by the secondary heating circuit of the RU,
if RU is present
Hz1 and Hz2 are controlled by the secondary
2
heating circuit of the RU, if RU is present
CC1P7494en
07.11.2002