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Siemens Building Technologies Basic Documentation RVL471 CE1P2524E
HVAC Products 28 Handling 23.10.2002
If the display shows ERROR, the fault can be pinpointed via the error code on operating
line 50.
28.3 Installation
28.3.1 Mounting location
The ideal location for the controller is a dry room, such as the boiler room. Its degree of
protection is IP42 to EN 60529, which means that the controller is protected against
dripping water.
The permissible ambient temperature is 0...50 °C.
The RVL471 can be fitted as follows:
• In a control panel (on the inner wall or on a DIN mounting rail)
• On a panel front
• In the control panel front
• In the sloping front of a control desk
28.3.2 Mounting choices
• The RVL471 can be mounted in one of 3 different ways:
• Wall mounting: The base is secured to a flat wall with 3 screws
• Rail mounting: The base is snapped on a DIN mounting rail
• Flush panel mounting: The base is fitted in a panel cut-out measuring 138
*
138 mm
(+1 mm / - 0 mm). The thickness of the front panel may be 3 mm maximum
28.3.3 Electrical installation
• The cable lengths should be chosen such that there is sufficient space to open the
control panel door
• Cable tension relief must be ensured
• The cables of the measuring circuits carry extra-low voltage
• The cables from the controller to the regulating unit and the pump carry mains voltage
• The cables to the sensors should not be run parallel to mains carrying cable (e.g.
power supply for the pump)
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