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Siemens Heating and D.h.w. Controller RVL481 CE1P2541en
Building Technologies 2 Use 20.05.2008
2 Use
2.1 Types of plant
The RVL481 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 RVL481 is suited for plants with storage tanks or
d.h.w. heating via heat exchangers (instantaneous d.h.w. heating) or via solar collector.
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 RVL481 is suited for use in all types of houses and buildings. It has been
designed especially for:
• Multi-family houses
• Single-family homes
• Nonresidential buildings
2.3 Types of heating systems
The RVL481 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 RVL481 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
changeover valve, with or without circulating pump
• D.h.w. heating via heat exchanger (instantaneous d.h.w. heating), with or without circu-
lating 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
• Third 7-day switching program
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