Basic Documentation
Table Of Contents
- 1 About this document
- 2 Overview
- 3 Notes
- 4 Functions
- 4.1 Temperature control
- 4.2 Operating modes
- 4.3 Room temperature setpoint
- 4.4 Application overview
- 4.5 Additional functions
- 4.6 Control sequences
- 4.7 Control outputs
- 4.8 Fan control
- 4.9 Multifunctional input, digital input
- 4.10 Handling system faults
- 4.11 Modbus RTU mode
- 4.12 Communication objects
- 4.13 Control parameters
- 5 Connection
- 6 Technical data
- 7 Dimensions
- Index
Connection
Connection diagrams
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5.2 Connection diagrams
Application
2-pipe, 2-position
2-pipe, 3-position
4-pipe
1-stage compressor (heating and/or
cooling)
1-stage compressor with electric
heater
(RDF660MB only)
N1 Room thermostat
RDF660MB/MM, RDF660MB
C1, C2 1-stage compressor
V1 Valve actuator, 2- or 3-position
V1, V2 Valve actuator, 2-position
S2 Switch (keycard, window contact, presence detector, etc.)
B2 Temperature sensor (return air temperature, external room temperature,
changeover sensor, etc.)
+ RS485 Modbus connection
- RS485 Modbus connection
REF RS485 signal/common ground (differential common)
M1 DC 0...10 V fan
E1 Electric heater (RDF660MB
only)