Siemens RVW26.000B27 User Manual

69 pages

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CC1P7873.1en

15.10.2002

Siemens Building Technologies

HVAC Products

RVW26.000B27

Electronic Air / Fuel Ratio Control System

Basic Documentation

The RVW26... and this Basic Documentation are intended for use by OEMs which integrate the ratio control system in

their products!

Default Chapter2
- Table of Contents2
1 Safety Notes4
- Warning Notes4
- Mounting Notes4
- Installation Notes4
- Commissioning Notes4
- Norms and Standards4
- Service Notes5
- Disposal Notes5
2 Front View and Basic Design6
3 General7
- Application8
4 Product Range Overview11
5 Description of Functions13
- Burner Startup13
- Startup14
- Burner Operation15
- Shutdown18
- Function Description of Power on and Reset19
- Selection of Type of Fuel20
- Compensation of Hysteresis22
- Application of a Correcting Variable24
- Load Signal Output "X126
6 Sequence of Functions27
- Rvw2527
- Explanations Relating to the Sequence Diagram27
- Sequence Diagram28
7 Basic Diagram29
8 Block Circuit Diagram30
9 Assignment of Terminals and Description of Inputs / Outputs (I / O)31
- Assignment of Terminals31
- Description of the Inputs / Outputs32
10 Display on the Control Unit33
11 Handheld Terminal AZW20.2034
12 Data Storage Module RZD2035
- Procedure for Replacing the RVW2636
13 Functional Readiness and Faults37
14 Error Codes and Rectification of Faults38
- Types of Faults and Troubleshooting38
- Error Code Table with Hints on Troubleshooting39
15 Programming the RVW2642
- Structure of the Display44
16 Applications51
- Basic Diagram of a Plant with a Modulating Burner (One Type of Fuel)51
- Basic Diagram of a Plant with a Modulating Burner (One Type of Fuel)52
17 Engineering Notes53
- Requirements Placed on Burner Design53
- Engineering55
- Requirements Placed on the Actuators and Potentiometers56
- Requirements Placed on the Variable Speed Drive and the Fan Speed Feedback Signal58
18 Notes on the Commissioning of a Burner59
- Setting Instructions for the RVW2661
- Permissible Range of Curvepoints63
- Setting Report64
19 Technical Data68

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Siemens RVW26.000B27 Specifications

General

Product name	Siemens RVW26.000B27
Category	Control Systems
Type	Relay
Contact Configuration	DPDT
Mounting Type	DIN Rail
Terminal Type	Screw Terminal
Operating Temperature	-25°C to +55°C

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Siemens RVW26.000B27 User Manual

Table of Contents

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