Siemens RVL481 - 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 Heating and D.h.w. Controller RVL481 CE1P2541en
Building Technologies 3 Fundamentals 20.05.2008
3 Fundamentals
3.1 Key technical features
The RVL481 offers 2 key technical features:
• The RVL481 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 “Heating circuit control with mixing group”
• Heating circuit plant type 2 “Heating circuit control with boiler”
• Heating circuit plant type 3 “Heating circuit control with heat exchanger”
• Heating circuit plant type 4 “Precontrol with mixing group”
• Heating circuit plant type 5 “Precontrol with boiler”
• Heating circuit plant type 6 “Precontrol with heat exchanger”
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. heating”
• D.h.w. plant type 1 “D.h.w. heating with charging pump”
• D.h.w. plant type 2 “D.h.w. heating with mixing group”
• D.h.w. plant type 3 “D.h.w. heating with changeover valve”
• D.h.w. plant type 4 “D.h.w. heating with heat exchanger”
• D.h.w. plant type 5 “D.h.w. heating with electric immersion heater “
The d.h.w. plant types 1, 2, 3 and 5 can be supported by solar systems, i.e. they allow
for d.h.w. heating via solar collector.
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."