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10 Water Level Control

Mk8 MM Manual Page | 178

Figure 10.5.4.C: Capacitance Probe –

Installation for a Water Tube Boiler

Main Page

Default Chapter4
- Table of Contents4
1 Mk8 MM Overview, Specifications and Wiring13
- Mk8 MM Overview13
- Wiring Schematic17
- Electrical Specifications20
- Connection between Mk8 MM and Mk8 EGA EVO29
- Connection between Mk8 MM and Mk8 DTI30
- Sequencing Connection Diagram31
- Standards32
2 Options and Parameters33
- Options33
- Parameters57
3 Commissioning Procedure67
- Overview67
- Installation Checks68
- Servomotors69
- Commissioning Fuel and Air Positions72
- Fuel Flow Metering89
- Gas/ Air Pressure Commission96
- Single Point Change97
- Online Changes102
- Setpoint Schedule103
  - Setpoint Schedule Overview103
  - Configuring Setpoint Schedule103
4 Fuel Output Modes & Changeover Options106
- Overview106
- Fuel Output Modes on the Mk8 MM107
- Single Fuel Output Mode (SFOM)108
- Dual Fuel Output Mode (DFOM)109
- Fuel Change on the Fly (COF)112
- Gas Pressure Sensors and Valve Proving in DFOM with COF118
- Limitations of DFOM and COF119
5 Pid Control120
- Proportional Band120
- Integral Control121
- Derivative Control122
2000 MM Features123
- Firing Rate Control123
- Using 4-20Ma Servomotors125
- Flame Detection Using Flame Switch128
- Continuous Pilot129
  - Continuous Pilot with Interrupted Pilot Sequence130
  - Continuous Pilot with Intermittent Pilot Sequence131
- Load Sensor Value Calibration132
- External Modulation133
- External Setpoint133
- Second Setpoint Select133
- Start Position Interlock and Purge Position Interlock134
- Purge Pressure Proving/ Purge Hold135
- No Pre-Purge136
7 Intelligent Boiler Sequencing137
- Sequencing Schematics137
- Sequencing Options and Parameters141
- Hot Water Sequencing142
  - Implementing Hot Water Sequencing142
  - Two Port Valve Operation143
- Steam Sequencing144
- Troubleshooting - Sequencing146
8 Multi-Burner Operation147
- Multi-Burner Overview147
- Configuring Multi-Burner Operation148
- Multi-Burner Operation Options150
  - Fully Linked Operation150
  - Independent on Fault151
- Multi-Burner with Water Level Control152
- Multi-Burner with EGA153
  - Multi-Burner with Single EGA153
  - Multi-Burner with Individual Egas154
- Multi-Burner External Modulation155
  - Permanent External Modulation155
  - Switched External Modulation155
9 Expansion Features156
10 Water Level Control157
- Overview157
- Water Level Control Expansion Options159
- Water Valves165
- Ways of Level Sensing168
  - Overview168
  - Configuration169
- Capacitance Probes172
- Nd Low Probe181
- Analogue Water Level185
- Auxiliary Alarm Inputs186
- Commissioning Procedure187
- Water Level Control Functions198
- Faults201
11 Top Blowdown204
- Overview204
  - Importance of Maintaining TDS204
  - TDS, Conductivity and Temperature205
- Top Blowdown Expansion Options206
- TDS Valves209
- TDS Probe210
- Configuration213
  - Wiring213
  - Top Blowdown PID Controller213
- Ways of Controlling TDS Level214
- Water Hardness Monitoring217
- Calibrating the TDS Probe218
- Faults220
12 Bottom Blowdown221
- Overview221
- Bottom Blowdown Expansion Options222
- Bottom Blowdown Reduction223
  - Blowdown Energy Savings223
  - Calculation for Bottom Blowdown Reduction224
- Installation Guidance226
- Set-Up230
  - Bottom Blowdown Settings230
  - Setting Servomotor231
- Bottom Blowdown Configuration235
  - Bottom Blowdown Schedule235
  - Bottom Blowdown Log237
- Faults238
13 Draught Control239
- Overview of Draught Control239
  - Parts Required for Draught Control241
- Draught Control Expansion Options242
- Draught Control Operation244
- Draught Control Set-Up248
  - Configuration248
  - Ways of Using Draught Servomotor249
- Commissioning Draught Control250
  - Commissioning Checks250
  - Commissioning Screen251
- Faults252
14 Direct Modbus253
- Overview253
- Direct Modbus Expansion Options254
- Setup and Configuration255
- Modbus Addresses256
15 First Outs264
- Overview of Firs Outs264
- First Outs Expansion Options264
- First Outs Configuration265
16 Heat Flow270
- Overview270
- Expansion Options271
- Wiring273
- Heat Flow Function274
- Steam Flow Metering279
- Hot Water Flow Metering287
- Spare Temperature Sensor291
- Faults294
17 Fully Metered Combustion Control295
- Overview295
  - Introduction295
  - Importance of Excess Air295
- Fully Metered Control Expansion Options296
- Fully Metered Combustion Control Operation300
- Set-Up303
- Faults308
18 Operation309
- Home Screen309
  - Home Screen Components310
  - Faults312
- Status Screen313
- Fuel-Air Screen318
- Flame Safeguard Screen321
  - Flame Safeguard321
  - Flame Safeguard - History322
- Channels Screen323
  - Servomotor323
  - VSD Channel324
- Gas Pressure Sensor Screen325
  - Gas Pressure325
  - Gas Sensor - History326
- Air Pressure Sensor Screen327
  - Air Pressure327
  - Air Sensor - History328
- Fuel Flow Screen329
  - Fuel Flow329
  - Fuel Flow - History330
- Sequencing Screen331
- EGA Screen334
- Outside Temperature Compensation Screen337
- Water Level Screen338
  - 18.12.1 Water Level - Status338
  - 18.12.2 Water Level - History339
- Top Blowdown Screen340
- Bottom Blowdown Screen342
- Steam Flow Screen343
  - 18.15.1 Steam Flow - Status343
  - 18.15.2 Steam Flow - History344
- Draught Screen345
  - 18.16.1 Draught Control - Status345
  - 18.16.2 Draught Control - History346
- First Outs347
- Fully Metered Combustion Control348
- System Configuration Screen349
19 Errors and Lockouts371
- Errors371
- Lockouts375
- Alarms and Warnings380
- Settings Conflicts388
- Forced Commission Reasons393

AUTOFLAME Mk8 MM - Page 178

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