Siemens LMU54 Series Manuals

Manuals and User Guides for Siemens LMU54 Series. We have 1 Siemens LMU54 Series manual available for free PDF download: Basic Documentation

Siemens LMU54 Series Basic Documentation

Siemens LMU54 Series Basic Documentation (171 pages)

Boiler Management Unit (BMU)

Brand: Siemens | Category: Control Unit | Size: 1.24 MB

Table of contents

3
Table of Contents
10
Overview
- 10
  Brief Description
10
System Concept
11
Features
- 11
  Safety Functions
- 11
  Supervision / Protective Functions for the Plant
- 11
  Auxiliary Modules (Clip-in)
- 12
  Dhw
- 12
  Heating Circuit
- 12
  System Application
- 12
  Operation / Service
- 13
  Parameterization
- 13
  Mains Transformer
- 13
  Other Features
13
Product Range
13
Field of Use
- 13
  Target Market
14
Notes On Product Liability
14
Notes On Environmental Protection
- 14
  Disposal Notes
15
Product Range Overview
17
Functions
17
Burner Control
- 17
  Program Selection
- 17
  Eeprom
- 17
  Forced Intermittent Operation
- 17
  Burner Control Program
- 18
  Sequence Diagram
  - 18
    Capacity Range < 70 KW
  - 18
    Capacity Range 70
  - 19
    Capacity Range > 120 KW
  - 19
    Description of Sequence Diagrams
  - 20
    Sequence Times
  - 20
    Standby
  - 20
    Startup
  - 22
    Shutdown
  - 22
    Home Run
  - 22
    Special Cases (Deviations)
  - 24
    Lmu
  - 24
    Parameterization of Speed Feedback Signal
  - 25
    Fan Parameters Accessible Via QAA
  - 26
    The Different Capacity Ranges
  - 27
    Setting the Fan Parameters During Startup and Shutdown
  - 28
    Speed Readjustment
30
Selection of the Compensation Variants
- 30
  Heating Circuits
- 32
  Room Setpoint
- 34
  Configuration of the Heating Circuits
- 35
  DHW Circuit
37
Acquisition of Actual Values
- 37
  Assignment of Analog Sensors
- 37
  Temperatures
- 38
  Display of Ionization Current
39
Supervisory Functions
- 39
  Temperature Limiter Function
- 39
  Flue Gas Temperature Supervision
  - 39
    Plausibility Check of Sensor
  - 39
    Function
- 40
  Electronic (S)LT
  - 40
    Handling Faults
- 42
  Flow Switch / Water Pressure Supervision
  - 42
    Function of Flow Switch
  - 42
    Function of Pressure Switch
- 42
  Pressure Sensor
  - 43
    Static Supervision
  - 44
    Dynamic Supervision
- 45
  Load Limitation
- 48
  Speed Limitation
- 48
  Limitation of Ionization Current
49
Boiler Control
- 49
  Frost Protection for the Boiler
- 49
  Controller Delay
  - 49
    Controller Delay Due to Parameterization
  - 50
    Controller Delay Due to SLT Criterion
- 50
  Controller Configuration
- 52
  Boiler Temperature Control
  - 52
    2-Position Control
  - 52
    Minimum Boiler Pause Time
- 52
  Boiler Cycling Protection
  - 53
    Dynamic Switch-off Differential
  - 54
    Modulating Control, Conventional
55
Hydraulic System Management (HSM)
- 55
  Frost Protection for the Plant
56
Consumer Management (CM)
- 56
  Determining the Demands for Heat
  - 56
    Priorization of Demands for Heat
- 57
  Determining the Temperature Demand
  - 58
    Temperature Limitation
- 59
  Summer / Winter (S / W) Changeover
61
Electronically Controlled PWM Heating Circuit Pump
- 61
  General
- 61
  Introduction
  - 61
    Notes
- 61
  Task of ∆T Control With PWM Pump
- 67
  Summary of All ∆T Parameters
  - 68
    Behavior in Different Operating Modes
    - 68
      Pump Overrun
    - 68
      Normal Operation (Heating Operation)
    - 68
      Reduced (Setback) Operation
    - 68
      Shutdown Mode
    - 68
      Heating Up Phase
    - 69
      DHW Operation
70
Heating Circuit Control
- 70
  Attenuated Outside Temperature
- 71
  Composite Outside Temperature
- 71
  Type of Building Construction
- 72
  Heating Curves
- 73
  Generating the Demands for Heat
  - 74
    Time Switch
  - 75
    Room Thermostat
  - 76
    Combinations of RU and Room Thermostat / Time Switch
  - 77
    ECO Functions
    - 77
      S / W Changeover
    - 77
      Automatic 24-Hour Heating Limit
  - 78
    Quick Setback Constant (KON)
  - 78
    Generating the Temperature Demands
    - 78
      With Fixed Value Control or Emergency Operation
    - 78
      With Weather Compensation
79
Clip-in AGU2.500
- 79
  Functions
  - 79
    General
  - 79
    Hydraulic Diagrams
  - 79
    Sensor Inputs (Analog Inputs)
  - 79
    Inputs / Outputs
  - 80
    Interfaces for the LMU
  - 80
    Sensor
  - 80
    Frost Protection
  - 80
    Overtemperature Protection
    - 80
      Mixing Circuits
  - 80
    Determining the Flow Temperature Setpoint
  - 81
    Pump Control
    - 81
      Pump Control With Pump Circuits
    - 81
      Pump Control With Mixing Circuits
    - 81
      Pump Overrun
    - 81
      Pump Kick
  - 81
    Mixing Valve Control
82
Clip-in Module OCI420
- 82
  Functions
  - 82
    General
  - 82
    Inputs / Outputs
  - 82
    Interfaces to LMU
82
Connection of LMU
- 83
  Automatic Changeover of Operating Mode
- 83
  Giving Consideration to Heat Demand From the RVA
- 83
  Locking and Forced Signals When Connecting to the LPB
- 83
  External DHW Heating By ALBATROS Controllers
  - 84
    Type of Priority of DHW Heating
84
Multiboiler Plants With LMU (Cascade Applications)
- 85
  Separate DHW Circuit in Cascade Applications
- 85
  Operation With the RVA65
- 86
  System Functions
89
Clip-in Function Module AGU2.51x
- 89
  Functions
  - 89
    General
  - 89
    Outputs
    - 89
      Number of Available Outputs
  - 90
    Inputs
    - 90
      Digital Input
    - 90
      Analog Input
    - 90
      Predefined Setpoint (Temperature Demand)
    - 91
      Predefined Output
    - 91
      Sensor Input "Pressureless Header
93
DHW Control (BWR)
- 93
  Boiler Temperature Setpoint During DHW Heating With Storage Tank
- 93
  Systems
- 94
  DHW Temperature Control
  - 94
    Compensation Variants
  - 95
    Position of Diverting Valve
  - 95
    Storage Tank Systems
  - 96
    Stratification Storage Tank
- 100
  Instantaneous DHW System
  - 100
    Notes
  - 100
    Hydraulic Diagram
- 100
  Operating Mode
  - 100
    Outlet Temperature Control (FS-DHW Is Closed)
  - 100
    Comfort Control (After FS-DHW Opening)
- 103
  Aqua-booster System
  - 103
    Hydraulic Diagram
- 103
  Operating Mode
  - 103
    Outlet Temperature Control
  - 103
    Comfort Control
- 104
  Legionella Function
105
Special Functions
- 105
  Forced Signals
- 105
  Parameterization
  - 105
    Via PC Tool ACS420 and OCI490
  - 105
    Via QAA73
  - 106
    Via AGU2.361 / AGU2.303
- 106
  Programmable Input of the LMU
  - 106
    Modem Function
  - 106
    Warm Air Curtain Function
- 107
  Programmable Output of the LMU
  - 107
    Status Output
  - 107
    Alarm Output
  - 107
    Operational Status Signal
  - 108
    Switching Off the External Transformer
  - 108
    Pump Output Second Heating Circuit
  - 108
    DHW Circulating Pump
  - 108
    Actuating Device With Warm Air Curtain Function Activated
  - 108
    Pump of Pressureless Header
  - 108
    Basic Function of Controller Clip-in Module
  - 109
    Actuating Device When Analog Signal Exceeds Threshold
- 109
  Power Concept
110
Basic Diagram
110
Lmu
111
Connection Diagrams
111
Lmu
112
DHW Stepper Motor (Bipolar)
112
Agu2.104a109
113
Agu2.500a109
114
Agu2.500a209
115
Oci420a109
116
Oci420a209
117
AGU2.51x
118
Connecting Cable Between OCI490
119
Mounting, Electrical Installation and Service
- 119
  Mounting (General)
  - 119
    Mounting the LMU5x
- 119
  Ignition Device
- 119
  Terminals and Wiring
- 120
  Testing By the Customer
121
Technical Data
121
Lmu
- 121
  General
- 122
  Electrical Connection Data
  - 126
    Cable Lengths (LMU
- 126
  Connectors
127
Clip-in
127
Agu2.500
- 127
  Outputs
- 127
  Electrical Connections
- 127
  Input
127
AGU2.51x
128
External Components
- 128
  RAST5 Connectors
- 128
  Mains Transformer
- 128
  Fan With DC 24 V Motor
- 128
  Fan With DC Motor Operating On Mains Voltage
129
Dimensions
129
LMU5x
130
LMU6x
131
AGU2.500A109 / AGU2.51xA109
132
Agu2.500a209
133
Oci420a109
134
Oci420a209
135
Mounting Plate for Clip-in Module
136
Parameter List / Legend of Parameter Bit Fields LMU
136
Parameter List
- 136
  Parameter List LMU
  - 136
    Temperatures
  - 137
    Switching Differentials
  - 137
    Controller Functions
  - 138
    Controller Times
  - 138
    Controller Coefficients
  - 138
    Pressures
  - 139
    Burner Control Fan
  - 139
    Burner Control Sequence
  - 140
    Burner Control Identification
  - 140
    Operating Data
  - 140
    MCI
  - 140
    Lpb
141
Lockout Position Storage
- 141
  Phase Designations / Numbers
142
Legend of Parameter Bit Fields LMU
- 142
  Controller Functions
- 145
  Burner Control Program
- 147
  Operating Modes
- 147
  Lpb
148
Glossary of Abbreviations
- 148
  Constants
- 148
  Variables
149
Addendum: Hydraulic Diagrams BMU
149
Hydraulic Diagrams
- 149
  Basic Diagrams
- 151
  Pump Circuit Extensions Via AGU2.500
- 153
  Mixing Circuit Extensions Via AGU2.500
- 156
  Zone Extensions
- 162
  Heat Generation Manager
166
Assignment of Hydraulic Diagrams to the Outputs of the LMU

Advertisement

Advertisement

Related Products

Siemens Categories

Controller Control Unit

Telephone

Cell Phone

Cell Phone Measuring Instruments

More Siemens Manuals...