Mechanical Design; General - Siemens RDF880KN Series Basic Documentation

Note:
Siemens
Smart Infrastructure
7.

Mechanical design

7.1

General

The thermostats consist of two parts:
• Front panel with electronics, operating elements and built-in room temperature
sensor.
• Mounting base with power electronics.
RDF880KN/NF require additional mounting frames to complete the installation and
are only suitable for square conduit boxes (confirming to BS 4662 standard).
RDF880KN is suitable for round conduit boxes (conforming to CEE/VDE), or
square conduit box (confirming to BS 4662 standard).
The rear of the mounting base carries the screw terminals as follows:
Terminals Description
L, N AC 230 V power supply mains and neutral
- Relay outputs 1 and 2
- Low, medium and high speed, fan relay outputs
Q11 Relay input (dry contacts)
Q12 Relay, normally closed output (NC)
Q14 Relay, normally open output (NO)
X1/X2 Universal inputs 1 and 2
M Input reference ground
CE+, CE- KNX bus + and - terminals
The front panel of the thermostat can be plugged into the mounting base directly.
RDF880KN.. Basic documentation
RDF880KN... front panel
53 / 60
A6V12318532_en--_a
2021-03-22