Siemens LMU64 Series - Page 165

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Siemens Building Technologies Basic Documentation LMU54... / LMU64... CC1P7494en
HVAC Products 14 Addendum: Hydraulic diagrams BMU 07.11.2002
1)
Following applies to these diagrams:
• The PWM pump must be powered by the continuous live wire (refer to section14.2)
• The multispeed pump must be connected according to the table in section 14.2
Legend
B1 Flow sensor
B2 Boiler flow sensor
B3 DHW sensor 1
B4 DHW sensor 2
B5 Room sensor HC1
B6 Room sensor HC2
B7 Boiler return sensor
B8 Flue gas sensor
B9 Outdoor sensor
PWM pump, mandatory
Multispeed pump, single-speed
(
no
PWM pump)
Room thermostat e.g. REV
Room controller e.g. QAA73...
20 °C
Room unit (QAA70)
Heating controller (RVA)
7494h01legE
PWM pump, optional
Note