Siemens RVL471 - 3 Fundamentals; Key Technical Features; Plant Types with Regard to Heating Circuit; Plant Types with Regard to D.h.w. Heating

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Siemens Building Technologies Basic Documentation RVL471 CE1P2524E
HVAC Products 3 Fundamentals 23.10.2002
3 Fundamentals
3.1 Key technical features
The RVL471 offers 2 key technical features:
• The RVL471 has 6 heating circuit plant types and 5 d.h.w. plant types preprogrammed.
When making use of all possible or practical combinations, there is a total of 29 plant
types available
• All functions and their settings are combined in the form of function blocks
3.1.1 Plant types with regard to heating circuit
In terms of heating circuit, the following plant types are available:
• Heating circuit plant type 1 – space heating with mixing valve
• Heating circuit plant type 2 – space heating with boiler
• Heating circuit plant type 3 – space heating with district heat
• Heating circuit plant type 4 – precontrol with mixing valve
• Heating circuit plant type 5 – precontrol with boiler
• Heating circuit plant type 6 – precontrol with district heat
Heating circuit plant type 5 is suited for integration into heat source cascades or heat
generation systems.
3.1.2 Plant types with regard to d.h.w. heating
In terms of d.h.w., the following plant types are available:
• D.h.w. plant type 0 – no d.h.w.
• D.h.w. plant type 1 – storage tank with charging pump
• D.h.w. plant type 2 – storage tank with mixing valve
• D.h.w. plant type 3 – storage tank with diverting valve
• D.h.w. plant type 4 – instantaneous d.h.w. heating via heat exchanger
• D.h.w. plant type 5 – only electric immersion heater
3.1.3 Function blocks
The following function blocks are available:
• Function block “Enduser space heating”
• Function block “Enduser d.h.w.”
• Function block “Enduser general”
• Function block “Plant type”
• Function block “Cascade slave”
• Function block "Space heating"
• Function block “3-position actuator heating circuit”
• Function block “Boiler”
• Function block “Setpoint return temperature limitation”
• Function block “District heat”
• Function block "Maximum limitation of the return temperature d.h.w."
• Function block "Basic settings d.h.w."
• Function block "Release of d.h.w. heating"
• Function block "Priority and flow temperature setpoint d.h.w."
• Function block "D.h.w. storage tank"
• Function block "3-position actuator d.h.w."
• Function block “Derivative action time d.h.w. heating via heat exchanger”