Siemens Building Technologies
Basic Documentation RVL470
CE1P2522E / 30.03.2000
Landis & Staefa Division
Fundamentals
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3. Fundamentals
3.1. Key technical features
The RVL470 offers two key technical features:
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The controller has six plant types preprogrammed
•
The settings are combined in the form of function blocks
3.1.1. Plant types with regard to the heating circuit
In terms of the heating circuit, the following plant types are available:
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Plant type 1 – "Space heating with a mixing valve"
•
Plant type 2 – "Space heating with a boiler"
•
Plant type 3 – "Space heating with district heat"
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Plant type 4 – "Pre-control with a mixing valve"
•
Plant type 5 – "Pre-control with a boiler"
•
Plant type 6 – "Pre-control with district heat"
3.1.2. Function blocks
The following function blocks are available:
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Function block "End-user 1"
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Function block "End-user 2"
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Function block "Plant type"
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Function block "Space heating"
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Function block "Three-position actuator for heating circuit"
•
Function block "Boiler"
•
Function block "Setpoint of return temperature limitation"
•
Function block "Settings for plant type 3"
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Function block "Service functions and general settings"
•
Function block "Contact H2"
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Function block "Contact H2 and general displays"
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Function block “Locking functions”
For each function block, the required settings are available in the form of operating
lines. A description of the individual functions is given below, for each function block and
line.
3.2. Plant types
The RVL470 has six types of plant ready programmed, whereby the functions are as-
signed to each type of plant, as required. When commissioning a plant, the respective
plant type must be selected.
3.2.1. Plant type 1 – "Space heating with a mixing valve"
B9
A6/B5
B7
Space heating with weather-compensated flow temperature control. Three-position
control through the heating zone's mixing valve. Outside temperature signal from own
outside sensor or data bus. With or without room temperature influence. Heating-up and
setback according to the heating program.