Watts AERCO Benchmark BMK5000 Operation And Service Manual
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Watts AERCO Benchmark BMK5000 Operation And Service Manual

Platinum boilers with edge controller
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Operation and Service Manual
Benchmark
®
with Edge
Natural Gas, Propane Gas and Dual Fuel
Modulating & Condensing Boilers
Models 750 through 6000
Other documents for this product include:
OMM-0136, GF-210 210 Installation and Startup Manual
OMM-0138, GF-212 Reference Manual
OMM-0139, GF-213 Edge Controller Manual
TAG-0019, GF-2070 Boiler Application Guide
TAG-0022, GF-2050 Vent-Combustion Air Guide
TAG-0047, GF-2030 Benchmark Gas Guide
TAG-0048, GF-2060 Benchmark Power Guide
Applies to serial numbers:
G-20-1800 and above – BMK750 – 5000N
N-20-0125 and above – BMK5000 & 6000
Disclaimer
The information contained in this manual is subject to change without notice
from AERCO International, Inc. AERCO makes no warranty of any kind with
respect to this material, including, but not limited to, implied warranties of
merchantability and fitness for a particular application. AERCO International is
not liable for errors appearing in this manual, not for incidental or
consequential damages occurring in connection with the furnishing,
performance, or use of these materials.
OMM-0137_J • 12/20/2022
®
Platinum Boilers
[ii] Controller
Heating and Hot Water Solutions
AERCO International, Inc. • 100 Oritani Drive • Blauvelt, NY 10913
USA: T: (845) 580-8000 • Toll Free: (800) 526-0288 • AERCO.com
Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
© 2020 AERCO

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  • Page 1 Operation and Service Manual ® Benchmark Platinum Boilers ® with Edge [ii] Controller Natural Gas, Propane Gas and Dual Fuel Modulating & Condensing Boilers Models 750 through 6000 Other documents for this product include: OMM-0136, GF-210 210 Installation and Startup Manual OMM-0138, GF-212 Reference Manual OMM-0139, GF-213 Edge Controller Manual TAG-0019, GF-2070 Boiler Application Guide...

  • Page 2: Table Of Contents

    Benchmark Platinum-Edge [ii]: Operation-Service Manual CONTENTS Table of Contents FOREWORD ...................... 5 SECTION 1: SAFETY PRECAUTIONS ..............9 1.1 WARNINGS & CAUTIONS ........................9 1.2 EMERGENCY SHUTDOWN ......................... 10 1.3 PROLONGED SHUTDOWN ......................... 10 1.4 IMPORTANT – FOR MASSACHUSETTS INSTALLATIONS ............... 11 SECTION 2: EDGE CONTROLLER OPERATION ..........
  • Page 3 Benchmark Platinum-Edge [ii]: Operation-Service Manual CONTENTS 5.2.2 LOW GAS PRESSURE TEST: BMK3000 – 6000 Only ..................61 5.3 HIGH GAS PRESSURE TEST ......................65 5.3.1 HIGH GAS PRESSURE TEST: BMK750 – 2500 ....................65 5.3.2 HIGH GAS PRESSURE TEST: BMK3000 – 6000 Only ..................67 5.4 LOW WATER LEVEL FAULT TEST .....................
  • Page 4 Benchmark Platinum-Edge [ii]: Operation-Service Manual CONTENTS 8.10 SHUTTING BOILER DOWN FOR EXTENDED PERIOD ..............109 8.10.1 Benchmark 5000 & 6000 Long Term Blower Storage ................. 110 8.11 RETURNING THE BOILER TO SERVICE AFTER SHUTDOWN ............ 111 8.12 RECOMMENDED PERIODIC TESTING ..................112 8.13 RECOMMENDED SPARES ......................

  • Page 5: Foreword

    Benchmark Platinum-Edge [ii]: Operation-Service Manual FORWARD FOREWORD The AERCO Benchmark (BMK) 750 through 6000 natural gas and propane fueled boilers are modulating and condensing units. They represent a true industry advance that meets the needs of today's energy and environmental concerns. Designed for application in any closed loop hydronic system, the Benchmark's modulating capability relates energy input directly to fluctuating system loads.
  • Page 6 Benchmark Platinum-Edge [ii]: Operation-Service Manual FORWARD o Vertical Discharge o Horizontal Discharge These boilers are capable of being vented utilizing Polypropylene and AL29-4C vent systems. In addition, the BMK750 & 1000 models are also approved for PVC and CPVC, vent systems (excluding the state of Massachusetts).
  • Page 7 Benchmark Platinum-Edge [ii]: Operation-Service Manual FORWARD AERCO Technical Terminology Meanings TERMINOLOGY MEANING A control system developed by AERCO and currently used in all Edge Controller Benchmark Platinum boilers. Energy Management System; often used interchangeably with BAS Factory Mutual. Used to define boiler gas trains. GF-xxxx Gas Fired (an AERCO document numbering system) Ground...
  • Page 8 Benchmark Platinum-Edge [ii]: Operation-Service Manual FORWARD AERCO Technical Terminology Meanings TERMINOLOGY MEANING PMC Board Primary Micro-Controller (PMC) board, contained in the Edge Part Number Proof of Closure Parts per Million Pounds per Square Inch (1 PSI = 6.89 kPa) Point-to-Point (usually over RS232 networks) P&T Pressure and Temperature ProtoNode...

  • Page 9: Section 1: Safety Precautions

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 1: SAFETY PRECAUTIONS SECTION 1: SAFETY PRECAUTIONS 1.1 WARNINGS & CAUTIONS Installers and operating personnel MUST, at all times, observe all safety regulations. The following warnings and cautions are general and must be given the same attention as specific precautions included in these instructions.

  • Page 10: Emergency Shutdown

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 1: SAFETY PRECAUTIONS 1.2 EMERGENCY SHUTDOWN If overheating occurs or the gas supply fails to shut off, close the manual shutoff valve (Figure 1- 1) located external to the unit. NOTE: The Installer must identify and indicate the location of the emergency shutdown manual gas valve to operating personnel.

  • Page 11: Important - For Massachusetts Installations

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 1: SAFETY PRECAUTIONS 1.4 IMPORTANT – FOR MASSACHUSETTS INSTALLATIONS Requirements for Massachusetts Installations Boiler Installations within the Commonwealth of Massachusetts must conform to the following requirements: • Boiler must be installed by a plumber or a gas fitter who is licensed within the Commonwealth of Massachusetts.
  • Page 12 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 1: SAFETY PRECAUTIONS Requirements for Massachusetts Installations 4. INSPECTION: The state or local gas inspector of the side wall horizontally vented gas fueled equipment shall not approve the installation unless, upon inspection, the inspector observes carbon monoxide detectors and signage installed in accordance with the provisions of 248 CMR 5.08(2)(a)1 through 4.

  • Page 13: Section 2: Edge Controller Operation

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 2: OPERATION SECTION 2: EDGE CONTROLLER OPERATION 2.1 INTRODUCTION This section provides a brief outline of how to gain access to Benchmark Boiler’s Edge Controller functionality. Full instructions for using the Edge Controller to setup, configure and operate a Benchmark Boiler are included in the Edge Controller Manual.

  • Page 14: Login And Password Entry

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 2: OPERATION 2.2 LOGIN AND PASSWORD ENTRY The Edge Controller has multiple levels of password protection. Level Password Description The default. Many parameters are visible but “Read Only.” No password Allows routine maintenance to be performed. Appropriate for AERCO Trained technicians (ATT).

  • Page 15: Section 3: Start Sequence

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE SECTION 3: START SEQUENCE 3.1 INTRODUCTION The information in this section provides a guide to starting the Benchmark Boiler using the Edge Controller. It is imperative that the initial startup of this unit be performed by factory trained personnel.
  • Page 16 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE Start Sequence 1. The Controller’s red DEMAND LED status indicator will light. 2. The unit checks all five pre-purge safety switches listed at the beginning of this section. The Edge Controller’s ignition sequence screen walks you through the ignition screens and demonstrates (or highlights) which switches are not met.
  • Page 17 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE Start Sequence NATURAL GAS INLET SSOV AIR/FUEL LOW GAS VALVE MANUAL PRESSURE SHUT-OFF SWITCH VALVE Figure 3-1c: BMK2500: SSOV Location (P/N 22318 shown) NATURAL GAS INLET AIR/FUEL SSOV VALVE MANUAL LOW GAS SHUT-OFF VALVE PRESSURE...
  • Page 18 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE Start Sequence UPSTREAM DOWNSTREAM SSOV SSOV WITH TO AIR/FUEL VALVE MANUAL SHUT- OFF VALVE GAS INLET HIGH GAS UPSTREAM LOW GAS PRESSURE SWITCH PRESSURE SWITCH - BMK6000: 10.5” W.C., 2.6 kPa - BMK6000: 8.5”...
  • Page 19 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE Start Sequence TO BLOWER STEPPER MOTOR PURGE VALVE POSITION DIAL AT 100% AIR IN Figure 3-2b: BMK1500 – 6000 Air/Fuel Valve in Purge Position 5. Next, the Blower Proof and Blocked Inlet switches close (Figure 3-4a and 3-4b). On the Ignition Sequence screen, the Purging indicator turns grey while purging is underway (Figure 3-3) and Purge Timer displays the purge cycle’s elapsed time in seconds.
  • Page 20 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE Start Sequence AIR/FUEL VALVE OUTLET TO BLOWER BLOWER PROOF SWITCH AIR/FUEL VALVE INLET FROM GAS TRAIN BLOCKED INLET SWITCH Figure 3-4b: BMK1500 – 6000 Blower Proof Switch 6. Upon completion of the purge cycle, the Controller initiates an ignition cycle and the following events occur: he Air/Fuel Valve rotates to the low-fire (Ignition) position and closes the ignition switch.
  • Page 21 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE Start Sequence TO BLOWER STEPPER MOTOR IGNITION VALVE POSITION DIAL AT 25% to 35% AIR IN Figure 3-5: Air/Fuel Valve in Ignition Position 7. Up to 4 seconds are allowed for ignition to be detected. The ignition circuit is turned off one second after flame is detected.
  • Page 22 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE BMK5000 & 6000 Function Timing Chart for Proved Pilot Control System Operating State Pre-purge PFEP MFEP Standby T = 0 T = 30 T = 37 T = 44 Component PFEP MFEP Edge Controller...

  • Page 23: Start/Stop Levels

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.3 START/STOP LEVELS The start and stop levels are the Air/Fuel Valve positions (% open) that start and stop the unit, based on load. These levels are Factory preset as follows: TABLE 3-1a: Start/Stop Levels –...

  • Page 24: Start/Stop Levels - Air/Fuel & Energy Input

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.4 START/STOP LEVELS – AIR/FUEL & ENERGY INPUT The Tables below show the relationship between the energy input and Air/Fuel Valve position for the BMK models covered in this document. 3.4.1 BMK750/1000 Air/Fuel Valve Position and Energy Input TABLE 3-2a: BMK750/1000 Air/Fuel Valve Position –...

  • Page 25: Bmk1500 Air/Fuel Valve Position And Energy Input

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE TABLE 3-2c: BMK750/1000 DUAL FUEL Air/Fuel Valve Position – NATURAL GAS Energy Input Boiler Energy Input (BTU/Hr) (% of Full Capacity) Air/Fuel Valve Position (% BMK750 BMK 1000 BMK750 Dual Fuel BMK 1000 Dual Fuel Open) Dual Fuel...
  • Page 26 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.4.2 BMK1500 Air/Fuel Valve Position and Energy Input TABLE 3-3a: BMK1500 Air/Fuel Valve Position – NATURAL GAS AIR/FUEL VALVE POSITION ENERGY INPUT BOILER ENERGY INPUT (% OPEN) (BTU/HR) (% OF FULL CAPACITY) 16% (Stop Level) 75,000 (22.3 kW) 5.0%...

  • Page 27: Bmk2000 Air/Fuel Valve Position And Energy Input

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.4.3 BMK2000 Air/Fuel Valve Position and Energy Input TABLE 3-4a: BMK2000 Air/Fuel Valve Position – NATURAL GAS AIR/FUEL VALVE POSITION ENERGY INPUT BOILER ENERGY INPUT (% OPEN) (BTU/HR) (% OF FULL CAPACITY) 18% (Stop Level) 100,000 (29.3 kW) 5.7%...

  • Page 28: Bmk2500 Air/Fuel Valve Position And Energy Input

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.4.4 BMK2500 Air/Fuel Valve Position and Energy Input TABLE 3-5a: BMK2500 Air/Fuel Valve Position – NATURAL GAS, Single Fuel AIR/FUEL VALVE POSITION ENERGY INPUT BOILER ENERGY INPUT (% OPEN) (BTU/HR) (% OF FULL CAPACITY) 16% (Stop Level) 167,000 (48.9 kW)

  • Page 29: Bmk3000 Air/Fuel Valve Position And Energy Input

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.4.5 BMK3000 Air/Fuel Valve Position and Energy Input TABLE 3-6a: BMK3000 Air/Fuel Valve Position – NATURAL GAS AIR/FUEL VALVE POSITION ENERGY INPUT BOILER ENERGY INPUT (% OPEN) (BTU/HR.) (% OF FULL CAPACITY) 14% (Stop Level) 200,000 (58.6 kW) 6.7%...

  • Page 30: Bmk4000 Air/Fuel Valve Position And Energy Input

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.4.6 BMK4000 Air/Fuel Valve Position and Energy Input TABLE 3-7a: BMK4000 Air/Fuel Valve Position – NATURAL GAS AIR/FUEL VALVE POSITION ENERGY INPUT BOILER ENERGY INPUT (% OPEN) (BTU/HR.) (% OF FULL CAPACITY) 23% (Stop Level) 228,180 5.7%...

  • Page 31: Bmk5000N Air/Fuel Valve Position And Energy Input

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.4.7 BMK5000N Air/Fuel Valve Position and Energy Input TABLE 3-8a: BMK 5000N Air/Fuel Valve Position – NATURAL GAS AIR/FUEL VALVE POSITION ENERGY INPUT BOILER ENERGY INPUT (% OPEN) (BTU/HR.) (% OF FULL CAPACITY) 18% (Stop Level) 256,000 6.5%...

  • Page 32: Benchmark 5000 Air/Fuel Valve Position And Energy Input

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.4.8 BMK5000 Air/Fuel Valve Position and Energy Input TABLE 3-9a: BMK5000 Air/Fuel Valve Position and Energy Input Air Fuel Valve Boiler Energy Input Position % of Full Capacity (% Full Open) BTU/Hr 18% (Stop Level) 400,000...

  • Page 33: Benchmark 6000 Air/Fuel Valve Position And Energy Input

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 3 - START SEQUENCE 3.4.9 BMK6000 Air/Fuel Valve Position and Energy Input TABLE 3-10a: BMK6000 Air/Fuel Valve Position and Energy Input Air Fuel Valve Position Boiler Energy Input (% Full Open) % of Full Capacity BTU/Hr 18% (Stop Level) 385,000...

  • Page 34: Section 4: Initial Start-Up

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP SECTION 4: INITIAL START-UP 4.1 INITIAL START-UP REQUIREMENTS The following are the prerequisites for the initial start-up of the Benchmark boiler: • Complete the installation per the Benchmark Platinum-Edge: INSTALLATION Manual (GF-210), including gas supply piping, vent installation and condensate drain piping.

  • Page 35: Tools & Instruments For Combustion Calibration

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP 4.2 TOOLS & INSTRUMENTS FOR COMBUSTION CALIBRATION To properly perform combustion calibration, the proper instruments and tools must be used and correctly attached to the unit. The following sections outline the necessary tools and instrumentation as well as their installation.
  • Page 36 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP TO AIR/FUEL VALVE MANUAL SHUT- OFF VALVE SSOV 1/4” NTP PLUG (Install manometer here for 1/4” NTP PLUG downstream combustion calibration reading) (Install manometer here for upstream combustion calibration reading) LEAK DETECTION BALL VALVE LEAK DETECTION BALL VALVE NATURAL GAS INLET...
  • Page 37 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP NATURAL GAS INLET HIGH GAS PRESSURE SWITCH 1/4” NPT PLUG (Install manometer here for downstream combustion calibration SSOV reading) LEAK DETECTION LOW GAS BALL VALVE PRESSURE SWITCH AIR/FUEL VALVE LEAK DETECTION BALL VALVE MANUAL SHUT- OFF VALVE...
  • Page 38 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP DOWNSTREAM HIGH GAS SSOV WITH POC PRESSURE SWITCH SWITCH TO AIR/FUEL VALVE LOW GAS MANUAL PRESSURE SWITCH SHUT-OFF VALVE UPSTREAM LEAK DETECTION BALL VALVE Figure 4-1e: Port Location for Combustion Calibration – BMK4000-5000N Gas Supply Manometer Installation Instructions BMK5000 - 6000 1.

  • Page 39: Accessing The Analyzer Probe Port

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP TO AIR/FUEL VALVE MANUAL DOWNSTREAM SHUT-OFF UPSTREAM LEAK SSOV WITH POC DETECTION BALL VALVE VALVE SWITCH GAS PORT (Install manometer here for Alternative location for upstream combustion calibration manometer if hose reading) barb is preferred LOW GAS...

  • Page 40: Benchmark 5000 & 6000 Pilot Flame Ignition

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP 4.3 BENCHMARK 5000 & 6000 PILOT FLAME IGNITION Benchmark 5000 and 6000 boilers are equipped with an interrupted pilot ignition system. The pilot is ignited by a spark discharge within the Pilot Burner inside the combustion chamber. The input. of the Pilot flame is approximately 18,000 BTU/hr.

  • Page 41: Natural Gas Manual Combustion Calibration

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP IT IS IMPORTANT TO PERFORM THE COMBUSTION CALIBRATION PROCEDURE BELOW TO PROVIDE OPTIMUM PERFORMANCE AND KEEP READJUSTMENTS TO A MINIMUM. BRASS HEX HEAD (Remove to access Gas Pressure Adjustment Screw). TAC SCREW Figure 4-3: Gas Pressure Adjustment Screw and TAC Screw Location WARNING:...
  • Page 42 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP NATURAL GAS Manual Combustion Calibration Instructions Figure 4-4: First Manual Combustion Calibration Screen 7. Connect the gas pressure manometer to the upstream side of the gas train’s SSOV (see Section 4.2.2), and then connect the Combustion Analyzer and Multimeter (per Section 4.2.3) and ensure that the heating loop is capable of dissipating sufficient heat at full fire.
  • Page 43 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP NATURAL GAS Manual Combustion Calibration Instructions PRE-SET CALIBRATION CONTROLS FINE VALVE POSITION CONTROLS PRESET CALIBRATION POINTS METHOD FINE VP STEP METHOD Figure 4-6: Manual Combustion Calibration Screens 12. Set the Controller’s Enable/Disable switch to Enable. 13.
  • Page 44 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP NATURAL GAS Manual Combustion Calibration Instructions 16. With the valve position still at 100%, insert the combustion analyzer probe into the exhaust manifold probe opening (see Figure 4-2a – 4-2c in Section 4.2.3) and allow enough time for the combustion analyzer reading to stabilize.
  • Page 45 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP NATURAL GAS Manual Combustion Calibration Instructions 22. On Benchmark 3000 - 6000 units only, record the manifold (downstream) gas pressure at 100%. This value will be used in Section 5.2.2: Low Pressure Gas Test, and Section 5.3.2: High Pressure Gas Test.
  • Page 46 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP NATURAL GAS Manual Combustion Calibration Instructions TABLE 4-3c: NATURAL GAS Final Valve Positions: BMK1500/2000 Duel Fuel BMK1500 DF BMK2000 DF Valve % ≤20 ppm 6.0% ± 0.2% 6.5% ± 0.2% <100 ppm ≤20 ppm 6.3% ±...
  • Page 47 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP NATURAL GAS Manual Combustion Calibration Instructions TABLE 4-3g: NATURAL GAS Final Valve Positions: BMK4000/5000N Dual Fuel Standard NO Ultra-Low NO Valve Position ≤20 ppm ≤9 ppm 5.5% ± 0.2% 6.0% ± 0.2% <100 ppm ≤20 ppm ≤9 ppm...

  • Page 48: Propane Gas Combustion Calibration

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP 4.5.2 PROPANE Gas Combustion Calibration These instructions apply only to units running PROPANE gas. PROPANE Combustion Calibration Instructions 1. Set the Edge Controller’s Enable/Disable switch to Disable. 2. Open the water supply and return valves to the unit and ensure that the system pumps are running.
  • Page 49 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP PROPANE Combustion Calibration Instructions 11. The main Manual Combustion Calibration screen appears. It provides two methods to ramp the unit’s valve position up or down: • Method 1: Toggle through the pre-set calibration points till you reach the desired valve position, then press Go to go to that point (left image below).
  • Page 50 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP PROPANE Combustion Calibration Instructions 16. With the valve position still at 100%, insert the combustion analyzer probe into the exhaust manifold probe opening (see Figure 4-2a – 4-2c in Section 4.2.3) and allow enough time for the combustion analyzer reading to stabilize 17.
  • Page 51 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP PROPANE Combustion Calibration Instructions • Enter the Flame Strength, NOx and CO readings from the Combustion Analyzer and multi-meter in the Manual Combustion Calibration screen’s Reading column. • Enter the same values, plus the O value, on the Combustion Calibration Data Sheet provided with the unit.
  • Page 52 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP PROPANE Combustion Calibration Instructions Valve Position Oxygen (O Nitrogen Oxide (NOx) Carbon Monoxide (CO) BMK2000 6.5% ± 0.2% <100 ppm <150 ppm <100 ppm <150 ppm 6.5% ± 0.2% <100 ppm <150 ppm 6.5% ±...

  • Page 53: Reassembly

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP PROPANE Combustion Calibration Instructions TABLE 4-6b: PROPANE Final Valve Positions: BMK5000 & 6000 Valve Position Nitrogen Oxide Carbon Oxygen (O Monoxide (CO) Single-Fuel Dual-Fuel BMK5000 5.5% ± 0.5% <100 ppm <150 ppm 5.5% ±...

  • Page 54: Dual Fuel Switchover

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP 4.7 DUAL FUEL SWITCHOVER All Benchmark Dual Fuel models contain a fuel selector switch, located to the right of the I/O board, behind the front panel. FUEL SELECTOR I/O BOARD SWITCH and cover Figure 4-10: Dual Fuel Switch...

  • Page 55: Adjusting The Automatic Reset Limit Switch Temperature

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP intervention. The limit range is manually adjustable from 32°F to 200°F (0°C to 93°C). The default value is 190°F (88°C). • Manual Reset: If the unit’s operating temperature exceeds the limit set on the switch, the switch goes into an alarm mode and shuts the unit down.

  • Page 56: Resetting The Manual Reset Limit Switch

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP Temperature Adjustment Instructions INCREASE TEMPERATURE DECREASE TEMPERATURE Figure 4-12: Auto-Reset Over-Temperature Limit Switch 4.8.2 Resetting the Manual Reset Limit Switch Perform the following steps to rest the Manual Reset Limit Switch after it has gone into Alarm mode, and after the temperature has fallen at least 10 degrees below the limit.
  • Page 57 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 4 – INITIAL START-UP (This page intentionally blank) OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 57 of 167...

  • Page 58: Section 5: Safety Device Testing

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING SECTION 5: SAFETY DEVICE TESTING 5.1 TESTING OF SAFETY DEVICES Periodic safety device testing is required to ensure that the control system and safety devices are operating properly. The boiler control system comprehensively monitors all combustion- related safety devices before, during and after the start sequence.

  • Page 59: Low Gas Pressure Test

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.2 LOW GAS PRESSURE TEST Complete the instructions in Section 5.2.1 for BMK750 – 2500 units, or in Section 5.2.2 for BMK3000 – 6000 units, which have different Low and High Gas Pressure switches. 5.2.1 Low Gas Pressure Test: BMK750 –...
  • Page 60 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING TO AIR/FUEL VALVE (P/N 22322 shown) MANUAL SHUT-OFF VALVE HIGH GAS PRESSURE SWITCH LOW GAS PRESSURE SWITCH SSOV GAS INLET 1/4” NPT PLUG Install manometer LOW GAS PRESSURE here for LOW gas LEAK DETECTION BALL VALVE pressure fault test.

  • Page 61: Low Gas Pressure Test: Bmk3000 - 6000 Only

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING NATURAL HIGH GAS PRESSURE GAS INLET SWITCH (P/N 22190 shown) SSOV LOW GAS PRESSURE AIR/FUEL VALVE SWITCH MANUAL SHUT-OFF VALVE 1/4” NPT PLUG Install manometer here for LOW gas pressure fault test.
  • Page 62 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING LOW Gas Pressure Test Instructions: BMK3000 – 6000 Only →____ x 0.5 + 0.9 = ______ min gas pressure FM Natural Gas pressure DBB Natural Gas pressure →____ x 0.5 + 0.9 = ______ min gas pressure BMK5000N →...
  • Page 63 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING LOW Gas Pressure Test Instructions: BMK3000 – 6000 Only NATURAL SSOV GAS INLET MANUAL SHUT- OFF VALVE LOW GAS AIR/FUEL PRESSURE VALVE LOW Gas SWITCH Pressure Port Install manometer here for Low Gas Pressure test LOW GAS BALL VALVE...
  • Page 64 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING LOW Gas Pressure Test Instructions: BMK3000 – 6000 Only Alternative location MANUAL SHUT-OFF VALVE AIR/FUEL VALVE NATURAL GAS Low Gas Pressure Test Port Install manometer here Alternative location PROPANE Low Gas Pressure Test Port Install manometer here Dual Fuel gas train showing both Natural Gas and...

  • Page 65: High Gas Pressure Test

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.3 HIGH GAS PRESSURE TEST Complete the instructions in Section 5.3.1 for BMK750 – 2500 units, or in Section 5.3.2 for BMK3000 – 6000 units, which have different High Gas Pressure switches. 5.3.1 HIGH GAS PRESSURE TEST: BMK750 –...
  • Page 66 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING HIGH Gas Pressure Test Instructions: BMK750 – 2500 14. Upon test completion, close the ball valve and remove the manometer. Replace the 1/4" NPT plug removed in step 2. TO AIR/FUEL MANUAL SHUT-OFF VALVE...

  • Page 67: High Gas Pressure Test: Bmk3000 - 6000 Only

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING HIGH Gas Pressure Test Instructions: BMK750 – 2500 SSOV HIGH GAS LOW GAS BALL VALVE PRESSURE SWITCH MANUAL AIR/FUEL SHUT-OFF VALVE VALVE (P/N 22190 shown) Figure 5-3c: BMK2500: HIGH Gas Pressure Fault Test 5.3.2 HIGH GAS PRESSURE TEST: BMK3000 –...
  • Page 68 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING HIGH Gas Pressure Test Instructions: BMK3000 – 6000 ONLY Main Menu → Diagnostics → Manual Run 7. On the Controller, go to: and then enable the Manual Mode control. 8.
  • Page 69 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING HIGH Gas Pressure Test Instructions: BMK3000 – 6000 ONLY HIGH Gas Pressure Port Install manometer here HIGH GAS for High Gas Pressure PRESSURE test NATURAL SWITCH GAS INLET LEAK DETECTION BALL VALVE MANUAL SHUT- OFF VALVE...
  • Page 70 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING HIGH Gas Pressure Test Instructions: BMK3000 – 6000 ONLY NATURAL GAS HIGH GAS PRESSURE SWITCH - BMK6000 – 10.5” W.C., 2.6 kPa - BMK5000 – 11.0” W.C., 2.7 kPa NATURAL GAS HIGH Gas Pressure Port Install manometer here for High...

  • Page 71: Low Water Level Fault Test

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.4 LOW WATER LEVEL FAULT TEST To simulate a low water level fault, proceed as follows: LOW Water Fault Test Instructions 1. Set the Controller’s Enable/Disable switch to Disable. 2.

  • Page 72: Water Temperature Fault Test

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.5 WATER TEMPERATURE FAULT TEST A high-water temperature fault is simulated by adjusting the Automatic Reset Over- Temperature switch. Water Temperature Fault Test Instructions 1. Start the unit in the normal operating mode and allow the unit to stabilize at its setpoint. 2.

  • Page 73: Interlock Tests

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.6 INTERLOCK TESTS The unit is equipped with three interlock circuits, called the Remote Interlock, and Delayed Interlock. These circuits are connected to the I/O board’s connector strip J6, labeled Remote Interlock, Delayed Interlock 1 and Delayed Interlock 2 (see Section 2.11.1: I/O Board Connections in the Benchmark Platinum-Edge: INSTALLATION Manual (GF-210).

  • Page 74: Flame Fault Test

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.7 FLAME FAULT TEST Flame faults can occur during ignition or while the unit is already running. To simulate each of these fault conditions, proceed as follows: Flame Fault Test Instructions 1.

  • Page 75: Air Flow Fault Tests-Blower Proof & Blocked Inlet Switches

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.8 AIR FLOW FAULT TESTS-BLOWER PROOF & BLOCKED INLET SWITCHES These tests check the operation of the Blower Proof switch and Blocked Inlet switch shown in Figure 5-6a, 5-6b and 5-6c. 5.8.1 Blower Proof Switch Test BLOWER PROOF...
  • Page 76 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING BLOCKED INLET SWITCH BLOWER PROOF SWITCH HEX SCREWS HOLDING WYE DUCT TO A/F VALVE MANUAL SHUT- (1 OF 3) OFF VALVE Figure 5-6c: Blower Proof & Blocked Inlet Switch Locations – BMK5000 & 6000 Blower Proof Switch Test Instructions 1.

  • Page 77: Blocked Inlet Switch Test

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.8.2 Blocked Inlet Switch Test This test will be run in simulated fire mode, with the Blocked Inlet switch isolated from the rest of the control circuitry. Blocked Inlet Switch Test Instructions 1.

  • Page 78: Ssov Proof Of Closure Switch Check

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.9 SSOV PROOF OF CLOSURE SWITCH CHECK The SSOV, shown in Figure 5-9, contains the Proof of Closure switch. The Proof of Closure switch circuit is checked as follows: SSOV Proof Of Closure Switch Check Instructions 1.

  • Page 79: Purge Switch Open During Purge

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING 5.10 PURGE SWITCH OPEN DURING PURGE The Purge switch (and Ignition switch) is located on the Air/Fuel Valve. To check the switch, proceed as follows: Purge Switch Open During Purge Check Instructions 1.
  • Page 80 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING Purge Switch Open During Purge Check Instructions Purge Position Switch Ignition Position Switch TO BLOWER AIR IN Figure 5-11a: Air/Fuel Purge and Ignition Locations – BMK750/1000 TO BLOWER Ignition Position Switch VALVE POSITION DIAL...

  • Page 81: Ignition Switch Open During Ignition

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 5 – SAFETY DEVICE TESTING Purge Switch Open During Purge Check Instructions TO BLOWER PURGE POSITION SWITCH DIAL IGNITION POSITION SWITCH AIR IN Figure 5-11c: Air/Fuel Purge and Ignition Locations – BMK5000 & 6000 5.11 IGNITION SWITCH OPEN DURING IGNITION The Ignition switch (and the Purge switch) is located on the Air/Fuel Valve.

  • Page 82: Section 6: Standalone Modes Of Operation

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – STANDALONE MODES OF OPERATION SECTION 6: STANDALONE MODES OF OPERATION The descriptions and instructions in this chapter apply to Standalone units only; the unit cannot be a BST Client or BST Manager. For instructions on configuring BST modes of operation, see Chapter 7: Boiler Sequencing Technology, below Benchmark standalone boilers are capable of being operated in any one of six different modes.

  • Page 83: Outdoor Reset Mode Startup

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – STANDALONE MODES OF OPERATION 6.1.2 OUTDOOR RESET MODE STARTUP Startup in the Outdoor Reset mode is accomplished as follows: NOTE: It is required to have an outdoor sensor for the Outdoor reset. A header sensor or boiler supply sensor can be used depending on the plant configuration.

  • Page 84: Constant Setpoint Mode

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – STANDALONE MODES OF OPERATION 6.2 CONSTANT SETPOINT MODE The Constant Setpoint mode (the default) is used when a fixed header temperature is desired. Common uses of this mode of operation include water source heat pump loops, and indirect heat exchangers for potable hot water systems or processes.

  • Page 85: Direct Drive Modes

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – STANDALONE MODES OF OPERATION To set the unit to Remote Setpoint mode: Remote Setpoint Mode Setup Instructions Main Menu → 1. As a prerequisite, verify that the unit is not a BST Client or Manager. Go to: Advanced Setup →...

  • Page 86: Aerco Control System (Acs)

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – STANDALONE MODES OF OPERATION Direct Drive Mode Setup Instructions 3. Press SH Operating Mode parameter and choose Direct Drive. 4. The Remote Signal parameter now appears. It can be set to one of the options below. •...

  • Page 87: Combination Control System (Ccs)

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – STANDALONE MODES OF OPERATION 6.6 COMBINATION CONTROL SYSTEM (CCS) NOTE: The ACS can be utilized for a Combination Control System. A Combination Control System (CCS) is one that uses multiple boilers to cover both space- heating and domestic hot water needs.

  • Page 88: Combination Control System Field Wiring

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – STANDALONE MODES OF OPERATION 6.6.1 COMBINATION CONTROL SYSTEM FIELD WIRING Wiring for this system is between the ACS, the ACS Relay Box, and the terminals in the I/O Box. Wire the units using a shielded twisted pair of 18 to 22 AWG wire. When wiring multiple units, each unit’s wiring must conform to the above.
  • Page 89 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – STANDALONE MODES OF OPERATION (This page intentionally blank) OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 89 of 167...

  • Page 90: Section 7: Boiler Sequencing Technology

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 7 – BOILER SEQUENCING TECHNOLOGY SECTION 7: BOILER SEQUENCING TECHNOLOGY 7.1 INTRODUCTION The Boiler Sequencing Technology system (BST) is an integrated 16 boiler control system. It is built into the Edge Controller. It has its own sophisticated PID control system designed to simultaneously control the light off and modulation of up to 16 boilers while achieving maximum operational efficiency.

  • Page 91: Installation Notes

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 7 – BOILER SEQUENCING TECHNOLOGY 7.1.1 Installation Notes A ProtoNode is needed for all protocols on BMK. If your installation includes a ProtoNode SSD (Client-Client Device), you must adhere to the procedure listed below. Failure to complete these steps can result in the failure of the BST system.
  • Page 92 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 7 – BOILER SEQUENCING TECHNOLOGY Figure 7-2: BST, BAS and Field Wiring – SD-A-1174 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 92 of 167...

  • Page 93: Bst Setup: Constant Setpoint

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 7 – BOILER SEQUENCING TECHNOLOGY 7.2.1 BST Setup: Constant Setpoint Complete the instructions below to configure the Controller for Constant Setpoint. BST Constant Setpoint Setup Instructions Main Menu → EZ 1. Go to: Setup. 2.

  • Page 94: Bst Setup: Remote Setpoint

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 7 – BOILER SEQUENCING TECHNOLOGY 7.2.2 BST Setup: Remote Setpoint Complete the instructions below to configure the Controller for Remote Setpoint. BST Remote Setpoint Setup Instructions Main Menu → EZ 1. Go to: Setup. 2.

  • Page 95: Bst Setup: Outdoor Air Temperature Reset

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 7 – BOILER SEQUENCING TECHNOLOGY BST Remote Setpoint Setup Instructions 14. If the unit will communicate with the site’s BAS (Building Automation System), the Select BAS Mode screen appears. Choose the communication protocol it will use, or press Off. 15.
  • Page 96 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 7 – BOILER SEQUENCING TECHNOLOGY BST Outdoor Air Reset Setpoint Instructions 9. The SH Operating Mode screen now appears; choose Outdoor Air Temperature Reset. 10. The Space Heating Outdoor Reset screen appears. Specify the minimum and maximum inside and outside temperatures that will be used to create the associated OATR curve that trigger the unit to turn on and off, and in Warm Weather Shutdown specify the threshold outside temperature above which the unit shuts down.
  • Page 97 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 7 – BOILER SEQUENCING TECHNOLOGY (This page intentionally blank) OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 97 of 167...

  • Page 98: Section 8: Maintenance

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE SECTION 8: MAINTENANCE 8.1 MAINTENANCE SCHEDULE All Benchmark boilers require regular routine maintenance to keep up efficiency and reliability. For best operation and life of the unit, the following routine maintenance procedures should be performed in the time periods specified in Table 8-1.

  • Page 99: Benchmark 750-5000N Igniter-Injector

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE TABLE 8-2b: 24 Month Maintenance Kits Parts Serviced/Replaced – Includes all 12 Month Parts Model Kit# Doc Name 58025-08 Burner & Blower gaskets, LWCO, air filter replacement 750/1000 TID-0100 58025-17 Burner & Blower gaskets, LWCO, air filter cleaner 58025-13 Burner &...
  • Page 100 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE IGNITER- INJECTOR BLOWER ASSEMBLY PLENUM SENSOR FLAME DETECTOR BURNER FLAME OBSERVATION PORT Figure 8-1b: Igniter-Injector & Flame Detector (BMK1500/2000) BLOWER PLENUM SENSOR FLAME DETECTOR IGNITOR-INJECTOR ASSEMBLY FLAME OBSERVATION PORT BURNER Figure 8-1c: Igniter-Injector & Flame Detector (BMK2500 – 5000N) O2 SENSOR INJECTOR TUBE POSITION INSIDE 75̊...

  • Page 101: Pilot Ignition - Benchmark 5000-6000

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE 8.2.1 PILOT IGNITION – BENCHMARK 5000-6000 The Benchmark 5000 and 6000 Pilot Burner (P/N 66026) is mounted to the Burner’s front plate. It should be inspected every 12 months and replaced every 24 months, or if damaged or warped.

  • Page 102: O 2 Sensor

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE 8.4 O SENSOR The Lean Oxygen Sensor (P/N 61026) should be cleaned and inspected every 12 months. It is not included in any of the 12- or 24-month maintenance kits. On BMK750 – 5000N units, it is located on the burner plate at the top of the unit. It may be hot, so allow the unit to cool sufficiently before removing or replacing the it.

  • Page 103: Air Eductor Air Pump Maintenance - Bmk5000 & 6000

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE Lean O Sensor Maintenance Instructions 4. Next, loosen and remove the O sensor and crush washer from the burner plate using a 15/16" open-end wrench. 5. Thoroughly inspect the O sensor. If eroded, the sensor should be replaced. Otherwise clean the sensor with a fine emery cloth.

  • Page 104: Safety Device Testing

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE Air Pump Maintenance and Troubleshooting Instructions Sensor Cover to the unit’s back panel. 3. Reattach the O GAS SUCTION LINE TO EXHAUST MANIFOLD AIR FILTER COVER BRACKET (Hangs on opening in back panel) Figure 8-4: Air Eductor Assembly –...
  • Page 105 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE AIR/FUEL VALVE BLOWER GAS TRAIN CONNECTS HERE SENSOR PIPE FLANGE GASKET (P/N 81155) FLAME DETECTOR BLOWER GASKET (P/N 81064) BURNER PLATE BURNER GASKET (P/N 81143) BURNER Figure 8-5a: Burner Assembly Exploded View – BMK750/1000 BLOWER GASKET (P/N 81184) 3/8”-16...
  • Page 106 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE BLOWER GASKET BLOWER PLENUM (P/N 81157) IGNITER- BLOWER INJECTOR ASSEMBLY A/F VALVE PLENUM BURNER PLATE AIR/FUEL VALVE 3/8”-16 HEX NUTS 5/8” NUTS (8 each) & BOLTS (4 each) AIR FILTER (P/N 88014) Figure 8-5c: Burner Assembly Mounting Details –...

  • Page 107: Condensate Drain Trap

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE 8.7 CONDENSATE DRAIN TRAP All Benchmark boilers contain a condensate trap (P/N 24441), located external to the unit, attached to the exhaust manifold’s drain at the rear of the unit. This trap must be inspected for leaks and blockages, cleaned to ensure that the float is free to move, and condensate flows normally, and the O-Ring (P/N 84017 included in all 24 Month Maintenance Kits) replaced if it is worn or damaged.

  • Page 108: Air Filter Cleaning And Replacement

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE 8.8 AIR FILTER CLEANING AND REPLACEMENT The boiler’s air filter should be maintained as follows: Cleaned every 12 months. Replaced after 24 months if it shows any signs of deterioration. However, if it is still in good condition, you can order a 24 Month Maintenance kit that includes an air filter cleaning kit in place of a new filter.

  • Page 109: Refractory Replacement - Bmk5000 & 6000 Only

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE Refractory Replacement – BMK5000 & 6000 ONLY A low mass, fiber-based material insulates the front and rear end plates of the combustion chamber. This material has very low thermal conductivity and is not susceptible to thermal shock conditions that cause failures of hard-faced refractory materials.

  • Page 110: Benchmark 5000 & 6000 Long Term Blower Storage

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE 8.10.1 Benchmark 5000 & 6000 Long Term Blower Storage Benchmark 5000 and 6000 blowers can be damaged if they are left in long term storage (exceeding 30 days after receipt of equipment). If a Benchmark 5000 and 6000 blower is kept in storage for more than 30 days, you must complete the instructions below.

  • Page 111: Returning The Boiler To Service After Shutdown

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE Benchmark 5000 & 6000 Long Term Blower Storage Instructions storing it in a damp or humid location will, very quickly, cause internal corrosion and motor failure which is not warranted. NOTE: For specific storage instructions, for the actual motor and any accessory parts that were supplied, refer to the manufacturer’s instructions.

  • Page 112: Recommended Periodic Testing

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE 8.12 RECOMMENDED PERIODIC TESTING WARNING! Periodic testing of all boiler controls and safety devices is required to ensure they continue to operate as designed. Precautions must be taken while tests are being performed to protect against bodily injury and property damage.
  • Page 113 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE TABLE 8-3: Recommended Periodic Testing ITEM FREQUENCY ACTION BY REMARKS High water temp. See Section 5.5: Water Temperature Fault Test Annually Service Tech safety control test in this guide. See Section 2: Edge Controller Operation in this Operating controls Annually Operator...

  • Page 114: Recommended Spares

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE 8.13 RECOMMENDED SPARES NOTE: Refer to the parts list illustrations in the Benchmark Platinum-Edge: REFERENCE Manual (GF-212) for the locations of the parts listed below. For a list of 12- and 24-Month Maintenance Kits, see Section 8.1: Maintenance Schedule. TABLE 8-4: Recommended Emergency Spare Parts DESCRIPTION 4000-5000N...
  • Page 115 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 8 – MAINTENANCE (This page intentionally blank) OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 115 of 167...

  • Page 116: Section 9: Aertrim Operation

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION SECTION 9: AERTRIM OPERATION 9.1 AERTRIM INTRODUCTION Advanced combustion control systems need to maintain precise air/fuel ratios to maximize efficiency. Gas and oil-fired boilers often deviate from the ideal air-fuel ratio due to environmental variations such as humidity, atmospheric pressure, filter dust loading, delivered gas energy content and other factors.

  • Page 117: Aertrim Activation

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION 9.2 AERTRIM ACTIVATION AERtrim is activated at the factory prior to shipping all Benchmark Platinum boilers. However, if the Edge Controller is replaced for any reason, you must activate the AERtrim function by entering an activation code, as described below.
  • Page 118 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION Figure 9-2: Active O Sensor Cycle Coverage Chart Figure 9-3 graphically shows the functional logic of the AERtrim system and how the blower voltage (BV), O Limits, and air/fuel ratio interact during an AERtrim operation. The limits are fixed presets within the controller.

  • Page 119: Aertrim O 2 Sensor Auto Calibration

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION Once the system operational stability conditions are met, the AERtrim system will execute the following steps: 1. Lock the fire rate at the current position that needs adjustment to the air/fuel ratio. 2.
  • Page 120 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION BMK750 AERtrim Values MENU ITEM Minimum Maximum Default Settle Time 120 Sec 20 Sec Trim Gain 0.250 Max Tries 5.5% Target 5.5% 5.5% (must be between 5.5% Upper & 5.5% Lower) 100% 5.0%...
  • Page 121 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION BMK1000 AERtrim Values MENU ITEM Minimum Maximum Default Settle Time 120 Sec 20 Sec Trim Gain 0.250 Max Tries 5.5% Target 5.5% 5.5% (must be between O 5.5% Upper & O 5.5% Lower) 100%...
  • Page 122 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION BMK1500 AERtrim Values MENU ITEM Minimum Maximum Default Settle Time 120 Sec 20 Sec Trim Gain 0.250 Max Tries 5.5% Target 6.5% 6.5% (must be between O 6.5% Upper & O 6.0% Lower) 100%...
  • Page 123 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION BMK2000 AERtrim Values MENU ITEM Minimum Maximum Default Settle Time 120 Sec 20 Sec Trim Gain 0.250 Max Tries 6.5% Target 6.0% 6.0% (must be between O 5.5% Upper & O 5.5% Lower) 100%...
  • Page 124 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION BMK2500 AERtrim Values MENU ITEM Minimum Maximum Default Settle Time 120 Sec 20 Sec Trim Gain 0.250 Max Tries 5.5% Target 6.5% 7.0% (must be between O 6.0% Upper & O 6.0% Lower) 100%...
  • Page 125 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION BMK3000 AERtrim Values MENU ITEM Minimum Maximum Default Settle Time 120 Sec 20 Sec Trim Gain 0.250 Max Tries 6.5% Target 7.3% 7.5% (must be between 7.0% Upper & 5.5% Lower) 100% 5.0%...
  • Page 126 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION BMK 4000 AERtrim Values MENU ITEM Minimum Maximum Default Settle Time 120 sec 20 sec Trim Gain 0.250 Max Tries Target (must be between Upper & Lower) 100% Lower (must be at least 1% lower than Upper)
  • Page 127 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION BMK 5000N AERtrim Values MENU ITEM Minimum Maximum Default Settle Time 120 sec 20 sec Trim Gain 0.250 Max Tries Target (must be between Upper & Lower) 100% Lower (must be at least 1% lower than Upper)

  • Page 128: Aertrim Maintenance And Troubleshooting

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION 9.6 AERTRIM MAINTENANCE AND TROUBLESHOOTING The AERtrim system, which maximizes blower efficiency, depends on the O sensor. The AERtrim system needs only minimal maintenance. It is recommended that you inspect the oxygen sensor for accuracy every 12 months by comparing it to a sensor reading from a properly calibrated flue analyzer.
  • Page 129 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 9 – AERTRIM OPERATION The Edge Controller does not display a message when O levels are within the target range. However, if O levels fall outside the target range, one of the messages listed in Table 9-2 will be Main Menu →...

  • Page 130: Section 10: Troubleshooting

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 10 – TROUBLESHOOTING SECTION 10: TROUBLESHOOTING 10.1 INTRODUCTION This section is intended to aid service/maintenance personnel in isolating the cause of a fault in your Benchmark boiler. The troubleshooting procedures below are presented in tabular form on the following pages.
  • Page 131 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 10 – TROUBLESHOOTING (This page intentionally blank) OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 131 of 167...
  • Page 132 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action Blower stopped running due to thermal or Check combustion blower for signs of excessive heat or high current overload. current drain that may trip thermal or current overload devices. Blocked Blower inlet or inlet air filter.
  • Page 133 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action Blower not running or running too slow. Start the unit. If the blower doesn’t run, check the blower solid state relay for input and output voltage. If OK, check the blower. Defective Blocked Inlet switch.
  • Page 134 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action Delayed Interlock Jumper not properly installed Check to insure jumper is properly installed across the Delayed or missing. Interlock terminals in the I/O Box. DELAYED Device proving switch hooked to interlocks is If there are 2 external wires on these terminals, check if an end...
  • Page 135 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action Worn Flame Detector or cracked ceramic. Remove and inspect the Flame Detector for signs of wear or cracked ceramic. Replace if necessary. Defective Regulator.
  • Page 136 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action Faulty Water temperature switch. Test the temperature switch to insure it trips at its actual water temperature setting. Check PID settings (Advanced Setup → Performance → Incorrect PID settings.
  • Page 137 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action Defective or shorted switch. If the Air/Fuel Valve does rotate to purge, check the ignition switch for continuity between the N.O. and COM terminals. If the switch shows continuity when not in contact with the cam replace the switch.
  • Page 138 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action Energy Management System does not have If there are two external wires on these terminals check any Energy unit enabled. Management system to see if they have the units disabled (a jumper may be temporarily installed to see if the interlock circuit is functioning).
  • Page 139 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action A/F Valve rotated open to purge and did not Start the unit. The Air/Fuel Valve should rotate to the purge (open) rotate to ignition position.
  • Page 140 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action Loose or broken wiring. Inspect Outdoor Temperature sensor for loose or broken wiring. OUTDOOR TEMP Defective Sensor. Check resistance of sensor to determine if it is within specification. SENSOR FAULT Incorrect Sensor.
  • Page 141 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING TABLE 10-1: Boiler Troubleshooting Procedures Fault Probable Causes Corrective Action SSOV relay failed on IGST board. Press CLEAR button and restart unit. If fault persists, replace Ignition/Stepper (IGST) Board. Floating Neutral. The Neutral and Earth Ground are not connected at the source and SSOV RELAY therefore there is a voltage measured between the two.

  • Page 142: Additional Faults Without Specific Fault Messages

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING 10.2 ADDITIONAL FAULTS WITHOUT SPECIFIC FAULT MESSAGES Refer to Table 10-2 to troubleshoot faults which may occur without a specific fault message being displayed. TABLE 10-2: Boiler Troubleshooting with No Fault Message Displayed Observed Incident Probable Causes Corrective Action...
  • Page 143 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 6 – TROUBLESHOOTING (This page intentionally blank) OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 143 of 167...

  • Page 144: Section 11: Wiring Diagrams

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS SECTION 11: WIRING DIAGRAMS 11.1 BENCHMARK 750 – 2000 SCHEMATICS Benchmark 750 – 2000 – Drawing Number: 68094 rev B Sheet 1 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 144 of 167...
  • Page 145 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 750 – 2000 – Drawing Number: 68094 rev B Sheet 2 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 145 of 167...
  • Page 146 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 750 – 2000 – Drawing Number: 68094 rev B Sheet 3 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 146 of 167...
  • Page 147 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 750 – 2000 – Drawing Number: 68094 rev B Sheet 4 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 147 of 167...

  • Page 148: Benchmark 2500 - 3000 Schematics

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS 11.2 BENCHMARK 2500 – 3000 SCHEMATICS Benchmark 2500 – 3000 – Drawing Number: 68095 rev B Sheet 1 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 148 of 167...
  • Page 149 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 2500 – 3000 – Drawing Number: 68095 rev B Sheet 2 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 149 of 167...
  • Page 150 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 2500 – 3000 – Drawing Number: 68095 rev B Sheet 3 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 150 of 167...
  • Page 151 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 2500 – 3000 – Drawing Number: 68095 rev B Sheet 4 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 151 of 167...

  • Page 152: Benchmark 4000 - 5000N Schematics

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS 11.3 BENCHMARK 4000 – 5000N SCHEMATICS Benchmark 4000 – 5000N – Drawing Number: 68101 rev C Sheet 2 of 6 New Image New Image Old Image Benchmark 4000 – 5000N – Drawing Number: 68101 rev C Sheet 1 of 6 OMM-0137_J •...
  • Page 153 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 4000 – 5000N – Drawing Number: 68101 rev C Sheet 2 of 6 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 153 of 167...
  • Page 154 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 4000 – 5000N – Drawing Number: 68101 rev C Sheet 3 of 6 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 154 of 167...
  • Page 155 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 4000 – 5000N – Drawing Number: 68101 rev C Sheet 4 of 6 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 155 of 167...
  • Page 156 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 4000 – 5000N – Drawing Number: 68101 rev C Sheet 5 of 6 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 156 of 167...
  • Page 157 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 4000 – 5000N – Drawing Number: 68101 rev C Sheet 6 of 6 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 157 of 167...

  • Page 158: Benchmark 5000 - 6000 Schematics

    Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS 11.4 BENCHMARK 5000 – 6000 SCHEMATICS Benchmark 5000 – 6000 Drawing Number: 68096 rev B Sheet 1 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 158 of 167...
  • Page 159 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 5000 – 6000 Drawing Number: 68096 rev B Sheet 2 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 159 of 167...
  • Page 160 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 5000 – 6000 Drawing Number: 68096 rev B Sheet 3 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 160 of 167...
  • Page 161 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 5000 – 6000 – Drawing Number: 68096 rev B Sheet 4 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 161 of 167...
  • Page 162 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 5000 – 6000 575V – Drawing Number: 68097 rev B Sheet 1 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 162 of 167...
  • Page 163 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 5000 – 6000 575V – Drawing Number: 68097 rev B Sheet 2 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 163 of 167...
  • Page 164 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 5000 – 6000 575V – Drawing Number: 68097 rev B Sheet 3 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 164 of 167...
  • Page 165 Benchmark Platinum-Edge [ii]: Operation-Service Manual SECTION 11: WIRING DIAGRAMS Benchmark 5000 – 6000 575V – Drawing Number: 68097 rev B Sheet 4 of 4 OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 165 of 167...
  • Page 166 Benchmark Platinum-Edge [ii]: Operation-Service Manual CHANGE LOG NOTES: OMM-0137_J • Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST 12/20/2022 Page 166 of 167...
  • Page 167 Benchmark Platinum-Edge [ii]: Operation-Service Manual CHANGE LOG Change Log: Date Description Changed By Rev F: DIR 18-19: Added note to turn AERtrim OFF before proceeding with combustion calibration (Section 4.4.1 and 4.4.2, pages 39 Linley and 45). 5/25/2020 Thobourne & Added Benchmark 5000N Chris Blair Clarified reason for “Dual Fuel”...

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