Watts BMK 750 Manuals

Manuals and User Guides for Watts BMK 750. We have 1 Watts BMK 750 manual available for free PDF download: User Manual

Watts BMK 750 User Manual (170 pages)

Gas-Fired Boilers

Brand: Watts | Category: Boiler | Size: 6.74 MB

Table of Contents
3
Foreword
7
Chapter 1. Safety Precautions

11
- Warnings & Cautions
  11
- Emergency Shutdown
  12
- Prolonged Shutdown
  12
Chapter 2. Installation

13
- Introduction
  13
- Receiving the Unit
  13
- Unpacking
  13
- Site Preparation
  14
- Installation Clearances
  14
- Setting the Unit
  15
- Supply and Return Piping
  16
- Pressure Relief Valve Installation
  18
- Condensate Drain & Piping
  19
- Gas Supply Piping
  21
- Gas Supply Specifications
  21
- Manual Gas Shutoff Valve
  21
- External Gas Supply Regulator
  22
- Ac Electrical Power Wiring
  22
- Electrical Power Requirements
  24
- Field Control Wiring
  25
- Outdoor Air in (OUT) & Air Sensor Common (COM)
  26
- AIR TEMP SENSOR Terminals
  27
- O 2 SENSOR Terminals (O2+ & O2-)
  27
- SPARK SIGNAL Terminals
  27
- ANALOG in Terminals
  27
- VALVE FEEDBACK Terminals
  27
- SHIELD Terminals (SHLD & SHLD)
  28
- ANALOG out Terminals
  28
- RS485 Comm (+, GND, & -)
  28
- RS232 Comm (Txd & Rxd)
  28
- Vfd/Blower (0-10 & AGND)
  28
- Interlocks
  28
- Fault Relay (NC, COM, & NO)
  29
- Auxiliary Relay Contacts (NC, COM, & NO)
  29
- Flue Gas Vent Installation
  29
- Combustion Air
  30
- Ducted Combustion Air
  30
- Sequencing Isolation Valve Installation
  31
- Benchmark Pump Relay
  32
Chapter 3. Operation

35
- Introduction
  35
- Control Panel Description
  35
- Control Panel Menus
  39
- Menu Processing Procedure
  39
- Operating Menu
  41
- Setup Menu
  42
- Configuration Menu
  42
- Tuning Menu
  45
- Combustion Cal Menu
  45
- Bst (Boiler Sequencing Technology) Menu
  46
- Start Sequence
  49
- Start/Stop Levels
  53
Chapter 4. Initial Start-Up

55
Chapter 5. Mode of Operation

65
- Introduction
  65
- Indoor/Outdoor Reset Mode
  65
- Reset Ratio
  65
- Building Reference Temperature
  65
- Outdoor Air Temperature Sensor Installation
  65
- Indoor/Outdoor Startup
  66
- Constant Setpoint Mode
  66
- Setting the Setpoint
  67
- Remote Setpoint Modes
  67
- Remote Setpoint Field Wiring
  68
- Remote Setpoint Startup
  68
- Direct Drive Modes
  68
- Direct Drive Field Wiring
  69
- Direct Drive Startup
  69
Chapter 6. Safety Device Testing

71
- Testing of Safety Devices
  71
- Low Gas Pressure Test
  72
- High Gas Pressure Test
  73
- Low Water Level Fault Test
  74
- Water Temperature Fault Test
  74
- Interlock Tests
  76
- Remote Interlock Test
  76
- Delayed Interlock Test
  76
- Flame Fault Tests
  77
- Air Flow Fault Tests
  79
- Blower Proof Switch Test
  79
- Blocked Inlet Switch Test
  79
- Ssov Proof of Closure Switch
  81
- Purge Switch Open During Purge
  82
- Ignition Switch Open During Ignition
  82
- Safety Pressure Relief Valve Test
  84
Chapter 7. Maintenance

85
Chapter 8. Troubleshooting Guide

99
- Introduction
  99
- Additional Faults Without Specific Fault Messages
  111
Chapter 9. Boiler Sequencing Technology

113
Appendix A: Heating Boiler Menu Item Descriptions

129
Appendix B: Startup, Status & Display Messages

137
Appendix C: Sensor Resistance/Voltage Chart

141
Appendix D: Recommended Periodic Testing

143
Appendix E: Indoor/Outdoor Reset Ratio Charts

145
Appendix F: Dimensional and Clearance Drawings

149
Appendix G: Part List Drawings

151
Appendix H: Wiring Diagrams

159
Appendix I: Piping Drawings

163
Appendix J: C-More Control Panel Views

165
Appendix K: Recommended Spares

167
Appendix L: 220V to 110V Transformer

169
- OMM-0119_0A AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
  170

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Watts BMK 750 Manuals

Watts BMK 750 User Manual (170 pages)

Table of Contents

Chapter 1. Safety Precautions

Chapter 2. Installation

Chapter 3. Operation

Chapter 4. Initial Start-Up

Chapter 5. Mode of Operation

Chapter 6. Safety Device Testing

Chapter 7. Maintenance

Chapter 8. Troubleshooting Guide

Chapter 9. Boiler Sequencing Technology

Appendix A: Heating Boiler Menu Item Descriptions

Appendix B: Startup, Status & Display Messages

Appendix C: Sensor Resistance/Voltage Chart

Appendix D: Recommended Periodic Testing

Appendix E: Indoor/Outdoor Reset Ratio Charts

Appendix F: Dimensional and Clearance Drawings

Appendix G: Part List Drawings

Appendix H: Wiring Diagrams

Appendix I: Piping Drawings

Appendix J: C-More Control Panel Views

Appendix K: Recommended Spares

Appendix L: 220V to 110V Transformer

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