Siemens RVL471 - 2 Use; Types of Plant; Types of Houses and Buildings; Types of Heating Systems

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Siemens Building Technologies Basic Documentation RVL471 CE1P2524E
HVAC Products 2 Use 23.10.2002
2 Use
2.1 Types of plant
The RVL471 is suitable for all types of heating plant that use weather-compensated
flow temperature control. In addition, it can be used for demand-compensated control of
the main flow.
With regard to d.h.w. heating, the RVL471 is suited for plants with storage tanks or
d.h.w. heating via heat exchangers (instantaneous d.h.w. heating).
Main applications:
• Heating zones and d.h.w. heating with own heat generation
• Heating zones and d.h.w. heating with a district heat connection
• Interconnected plants consisting of heat generation, several heating zones and central
or decentral d.h.w. heating
2.2 Types of houses and buildings
Basically, the RVL471 is suited for use in all types of houses and buildings It has been
designed especially for:
• Multi-family houses
• Single-family homes
• Small to medium-size nonresidential buildings
2.3 Types of heating systems
The RVL471 is suited for use with all standard heating systems, such as:
• Radiators
• Convectors
• Underfloor heating systems
• Ceiling heating systems
• Radiant panels
2.4 Functions
The RVL471 is used if one or several of the following functions is / are required:
• Weather-compensated flow temperature control
• Flow temperature control via a modulating seat or slipper valve, or boiler temperature
control through direct control of a single- or 2-stage burner
• D.h.w. storage tank charging through control of a mixing valve, charging pump or di-
verting valve, with or without circulating pump
• D.h.w. heating via heat exchanger (instantaneous d.h.w. heating), with or without cir-
culating pump
• Optimum start / stop control according to the selected 7-day program
• Quick setback and boost heating according to the selected 7-day program
• ECO function: demand-dependent switching of the heating system based on the type
of building construction and the outside temperature
• Voltage output DC 0...10 V for passing on the heat demand signal
• Multifunctional relay
• 7-day program for building occupancy with a maximum of 3 setback periods per day
and daily varying occupancy schedules
• Own 7-day switching program for the release of d.h.w. heating