Watts AERCO Benchmark OMM-0136

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Benchmark Platinum-Edge [II]: Operation-Service Manual

SECTION 3 - START SEQUENCE

OMM-0137_E • GF-211 • 12/13/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 32 of 153

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Main Page

Table of Contents2
Foreword5
Section 1: Safety Precautions9
Warnings & Cautions9
Emergency Shutdown10
Prolonged Shutdown10
Important - for Massachusetts Installations11
Section 2: Edge Controller Operation13
Introduction13
Login and Password Entry14
Section 3: Start Sequence15
Introduction15
Start Sequence15
Start/Stop Levels23
Start/Stop Levels - Air/Fuel & Energy Input24
BMK750/1000 Air/Fuel Valve Position and Energy Input24
BMK1500 Air/Fuel Valve Position and Energy Input25
BMK2000 Air/Fuel Valve Position and Energy Input26
BMK2500 Air/Fuel Valve Position and Energy Input27
BMK3000 Air/Fuel Valve Position and Energy Input28
BMK4000 Air/Fuel Valve Position and Energy Input29
Benchmark 5000 Air/Fuel Valve Position and Energy Input30
Benchmark 6000 Air/Fuel Valve Position and Energy Input31
Section 4: Initial Start-Up33
Initial Start-Up Requirements33
Tools & Instruments for Combustion Calibration34
Required Tools & Instrumentation34
Installing Gas Supply Manometer34
Accessing the Analyzer Probe Port38
Fuel Types and Combustion Calibration38
Combustion Calibration38
NATURAL GAS Manual Combustion Calibration39
Propane Gas Combustion Calibration45
Reassembly50
Dual Fuel Switchover52
Over-Temperature Limit Switches53
Adjusting the Automatic Reset Limit Switch Temperature53
Resetting the Manual Reset Limit Switch54
Changing the Readout between Fahrenheit and Celsius54
Section 5: Safety Device Testing55
Testing of Safety Devices55
Low Gas Pressure Test56
Low Gas Pressure Test: Bmk750 - 250056
LOW GAS PRESSURE TEST: BMK3000 - 6000 Only58
High Gas Pressure Test62
High Gas Pressure Test: Bmk750 - 250062
HIGH GAS PRESSURE TEST: BMK3000 - 6000 Only64
Low Water Level Fault Test68
Water Temperature Fault Test69
Interlock Tests70
Remote Interlock Test70
Delayed Interlock Test70
Flame Fault Test71
Air Flow Fault Tests - Blower Proof & Blocked Inlet Switches72
Blower Proof Switch Test72
Blocked Inlet Switch Test74
Ssov Proof of Closure Switch Check75
Purge Switch Open During Purge76
Ignition Switch Open During Ignition78
Safety Pressure Relief Valve Test78
Section 6: Standalone Modes of Operation79
Outdoor Reset Mode79
Outdoor Air Temperature Sensor Installation79
Outdoor Reset Mode Startup80
Constant Setpoint Mode81
Remote Setpoint Mode81
Direct Drive Modes82
Aerco Control System (Acs)83
Combination Control System (Ccs)84
Combination Control System Field Wiring85
Combination Control System Setup and Startup85
Section 7: Boiler Sequencing Technology87
Introduction87
Installation Notes88
Bst Quick Start Chart88
Bst Implementation Instruction89
Option 1 Constant Setpoint: Direct Wired Header Temp Sensor89
Option 2 Constant Setpoint: Modbus Wired Header Temp Sensor91
Option 3 Outdoor Reset: Direct Wired Header Temp Sensor & Direct Wired Outdoor Temp Sensor93
Option 4 Outdoor Reset: Modbus Header Temp Sensor & Modbus Outdoor Temp Sensor95
Option 5 Remote Setpoint: Direct Wired Header Temp Sensor & 4-20Ma Setpoint Drive97
Option 6 Remote Setpoint: Direct Wired Header Temp Sensor & Modbus Setpoint Drive99
Option 7 Remote Setpoint: Modbus Header Temp Sensor & 4-20Ma Setpoint Drive101
Option 8 Remote Setpoint: MODBUS Header Temp Sensor & MODBUS Setpoint Drive103
Section 8: Maintenance105
Maintenance Schedule105
Igniter-Injector - Bmk750 - 4000106
Pilot Ignition Rod - Bmk5000 & 6000108
Flame Detector108
O 2 Sensor109
Air Eductor Air Pump Maintenance - BMK5000 & 6000110
Safety Device Testing111
Burner Inspection111
Condensate Drain Trap114
Air Filter Cleaning and Replacement115
Refractory Replacement - Bmk5000 & 6000 Only115
Rear Refractory Replacement116
Front Refractory Replacement118
Shutting Boiler down for Extended Period119
Benchmark 5000 & 6000 Long Term Blower Storage119
Returning the Boiler to Service after Shutdown121
Recommended Periodic Testing122
Recommended Spares124
Section 9: Aertrim Operation125
Aertrim Introduction125
Aertrim Activation126
Operation Details126
Aertrim Osensor Auto Calibration128
Aertrim Menu Values and Defaults128
Aertrim Maintenance and Troubleshooting136
Section 10: Troubleshooting139
Introduction139
Additional Faults Without Specific Fault Messages150
Notes152

Watts AERCO Benchmark OMM-0136 - Page 32

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