Siemens RVL471 - 1 Summary; Brief Description and Key Features; Type Summary; Equipment Combinations

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Siemens Building Technologies Basic Documentation RVL471 CE1P2524E
HVAC Products 1 Summary 23.10.2002
1 Summary
1.1 Brief description and key features
• The RVL471 is a multifunctional heating controller for use in residential and non-resi-
dential buildings that have their own d.h.w. heating facility
• Suited for:
− Heating zone control with or without room influence via weather-compensated flow
temperature control
− Precontrol via demand-compensated control of the main / secondary flow tem-
perature
− Precontrol via demand-compensated boiler temperature control. Suited for integra-
tion into heat source cascades or heat generation systems (heat pump, solar,
wood)
• For use in plants with own heat generation or with a district heat connection
• With regard to d.h.w. heating, the RVL471 is suited for plants with d.h.w. storage tanks,
electric immersion heaters and instantaneous systems with own heat exchangers
• The RVL471 has 29 plant types preprogrammed. When a certain type of plant is se-
lected, all functions and settings required for that plant will be activated
• A scalable voltage output DC 0...10 V is used to pass the heat demand signal to other
systems
• A multifunctional relay provides additional control functions, if required
• For direct adjustment of the heating curve, the well known “bar" is used. Digital ad-
justment of the heating curve is possible also. A setting knob is used for making room
temperature readjustments
• All the other parameters are set digitally based on the operating line principle
• The RVL471 is capable of communicating with other units via LPB (Local Process Bus)
• Key design features: Operating voltage AC 230 V, CE conformity, overall dimensions
to DIN 43700 (144 x 144 mm)
1.2 Type summary
The RVL471 is a compact controller that requires no plug-in modules.
1.3 Equipment combinations
1.3.1 Suitable sensors
• For water temperatures:
Suitable are all types of temperature sensors that use a sensing element
LG-Ni 1000
7KHIROORZLQJW\SHVDUHSUHVHQWO\DYDLODEOH
− Strap-on temperature sensor QAD22
− Immersion temperature sensors QAE22...
− Immersion temperature sensor QAP21.3 complete with connecting cable
• For the room temperature:
Suitable are all types of temperature sensors that use a sensing element
LG-Ni
7KHIROORZLQJW\SHVDUHSUHVHQWO\DYDLODEOH
− Room temperature sensor QAA24
• For the outside temperature:
− 2XWVLGHVHQVRU4$&VHQVLQJHOHPHQW/*1L 
− Outside sensor QAC32 (sensing element NTC 575)