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Building Technologies Division User Manual RWF50... CC1U7866en

Infrastructure & Cities Sector Contents 25.07.2014

Contents

1 Introduction ...................................................................................................... 8

1.1 General notes .................................................................................................. 8

1.2 Typographical conventions .............................................................................. 9

1.2.1 Safety notes ..................................................................................................... 9

1.2.2 Warning symbols ............................................................................................. 9

1.2.3 Notification symbols ....................................................................................... 10

1.2.4 Presentation .................................................................................................. 10

1.3 Description ..................................................................................................... 11

1.4 Block structure ............................................................................................... 12

2 Identification of product no. ........................................................................... 13

2.1 Type field ....................................................................................................... 13

2.2 Scope of delivery ........................................................................................... 13

3 Installation ..................................................................................................... 14

3.1 Installation site and climatic conditions .......................................................... 14

3.2 Dimensions .................................................................................................... 14

3.3 Side-by-side mounting ................................................................................... 15

3.4 Mounting the controller in a panel cutout ....................................................... 15

3.5 Removing the controller from the panel cutout .............................................. 16

3.6 Cleaning the front .......................................................................................... 16

4 Electrical connections .................................................................................... 17

4.1 Installation notes ............................................................................................ 17

4.2 Galvanic separation ....................................................................................... 18

4.3 Assignment of terminals ................................................................................ 19

5 Operating modes ........................................................................................... 21

5.1 Low-fire operation .......................................................................................... 21

5.2 High-fire operation ......................................................................................... 22

5.2.1 Modulating burner, 3-position output ............................................................. 22

5.2.2 Modulating burner, analog output .................................................................. 23

5.2.3 2-stage burner, 3-position output ................................................................... 24

5.2.4 2-stage burner, analog output ....................................................................... 25

5.3 Burner shutdown ........................................................................................... 26

5.4 Predefined setpoint ........................................................................................ 27

5.5 Response threshold (q) ................................................................................. 28

5.6 Cold start of plant .......................................................................................... 29

5.7 Thermal shock protection (TSS) .................................................................... 31

6 Operation ....................................................................................................... 32

Siemens RWF50.3 User Manual

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