Siemens LMU64 Series - Page 46

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Siemens Building Technologies Basic Documentation LMU54... / LMU64... CC1P7494en
HVAC Products 3 Functions 07.11.2002
If there is demand for DHW, the maximum output is always predetermined by «LmodVL».
With regard to heat demand, the following thus applies to the modulating range:
Demand for space
heating
Demand for DHW heating
Minimum output LmodTL LmodTL
Maximum output PhzMaxAkt LmodVL
The maximum heat output can be adjusted on the HMI, QAA73... or PC tool using the
controller stop function.
The setting range is 0...100 %, whereby the following assignment applies:
0 % → LmodTL
100 % → LmodVL
When setting the maximum heat output, the following must be observed:
Maximum output in DHW mode: LmodTL ≤ LmodVL ≤ 100 %
Maximum output in heating mode: LmodTL ≤ PhzMax ≤ LmodVL
Maximum output in heating mode
and RU connected: LmodTL ≤ PhzMaxAkt ≤ PhzMax