Aerco 750 User Manual
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Aerco 750 User Manual

Natural gas fired, modulating and condensing boilers
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Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA
OPERATION, SERVICE and MAINTENANCE GUIDE
Natural Gas Fired, Modulating and Condensing Boilers
750, 1000, 1500, 2000, 2500, and 3000 MBH Boilers
Latest Update: 07/17/2017
OMM-0128_0B
GF-206-K
USER MANUAL
®
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
(2 of 2)
SEE ALSO: Benchmark 750-
3000 Installation and Startup
Guide
OMM-0127 (GF-205-K)
,
APPLIES TO MODELS
Natural Gas:
•
BMK 750
•
BMK 1000
•
BMK 1500
•
BMK 2000
•
BMK 2500
BMK 3000
•
Applies to Serial Numbers:
G-17-1200 and above.
Patent # 10-1755141
GF-206-K
Page 1 of 144
07/17/2017

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  • Page 1 BMK 2000 • BMK 2500 BMK 3000 • Applies to Serial Numbers: G-17-1200 and above. Patent # 10-1755141 Latest Update: 07/17/2017 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0B Page 1 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...

  • Page 2: Table Of Contents

    3.7.2 Combination Control System Setup and Startup .................... 36 SECTION 4: MAINTENANCE ................37 4.1 MAINTENANCE SCHEDULE ....................... 37 4.2 IGNITER-INJECTOR ..........................38 4.3 FLAME DETECTOR ..........................43 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 2 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 3 APPENDIX H: BENCHMARK 2500/3000 PART LISTS .......... 113 APPENDIX I: WIRING DIAGRAMS ..............125 APPENDIX J: C-MORE CONTROLLER VIEWS ............ 141 APPENDIX K: RECOMMENDED SPARES ............143 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 3 of 144 Ph.: 800-526-0288...
  • Page 4 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA CONTENTS (This page intentionally blank) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 4 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 5: Foreword

    FORWARD FOREWORD The AERCO Benchmark (BMK) 750, 1000, 1500, 2000, 2500, and 3000 natural gas 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 BTUs per Hour (1 BTU/hr = 0.29 W) Combination Control Panel Combination Control System A control system developed by AERCO and currently used in all C-More Controller Benchmark, Innovation and KC1000 Series product lines. Cubic Feet per Hour (1 CFH = 0.028 m...
  • Page 7 Part Number Proof of Closure Parts per Million Pounds per Square Inch (1 PSI = 6.89 kPa) Point-to-Point (usually over RS232 networks) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 7 of 144 Ph.: 800-526-0288 GF-206-K...
  • Page 8 W.C. Water Column, a unit of pressure (1 inch W.C. = 249 Pa) µA Micro amp (1 million of an ampere) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 8 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 9: Section 1: Safety Precautions

    • Electrical voltages up to 220 VAC (BMK 750 – 2000) or 220 or 380 VAC (BMK 2500/3000) may be used in this equipment. Therefore the cover on the unit’s power box (located behind the front panel door) must be installed at all times, except during maintenance and servicing.

  • Page 10: Emergency Shutdown

    After prolonged shutdown, it is recommended that the startup procedures and safety device test procedures, described in Section 4 and 5, respectively of the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM-0127 (GF-205-K) be performed to verify all system- operating parameters.

  • Page 11: Section 2: Operation

    This situation will void any warranty. CAUTION! All of the installation procedures in the Benchmark 750 – 3000 Boiler Installation and Startup Guide, OMM-0127 (GF-205-K) must be completed before attempting to start the unit. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913...

  • Page 12: C-More Controller Description

    Additional information on these items is provided in the individual operating procedures and menu descriptions provided in this section. Figure 2-1: C-More Controller Front View AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 12 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 13 • Pressing RESET resets the water level monitor circuit. switches • Pressing the CLEAR key (item 6) resets the display. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 13 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 14 20 segment red LED bargraph continuously shows the Air/Fuel VALVE POSITION Valve position in 5% increments from 0 to 100% Bargraph AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 14 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 15: C-More Controller Menus

    2 password (6817), which is used in initial startup (see Section 4: Initial Startup of the Benchmark 750 – 3000 Boiler Installation and Startup Guide, OMM-0127 (GF- 205-K)), to perform combustion calibration prior to service use.
  • Page 16 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA SECTION 2: OPERATION * Only if BST is enabled. BST is described in detail in Section 6 of the Benchmark 750 – 3000 Boiler Installation and Startup Guide, OMM-0127 (GF-205-K). Figure 2-2: Menu Structure NOTE: The following sections provide brief descriptions of the options contained in each menu.

  • Page 17: Operating Menu

    An additional parameter associated with the Operating menu, Manual Valve Pos (Min = 0, Max = 100) does not appear in this menu, but can be displayed by pushing the Auto/Man button on the C-More Controller’s front face. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 17 of 144 Ph.: 800-526-0288...

  • Page 18: Setup Menu

    E, G, H, R, N or A Unit Year Unit Serial # 9999 Current software Software Ver 0.00 Ver 9.99 version AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 18 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 19: Configuration Menu

    100°F 60°F (If Outdoor Sensor = (-1.1°C) (37.8°C) (15.6°C) Enabled) Setpt Lo Limit 40°F (4.4°C) Setpt Hi Limit 60°F (15.6°C) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 19 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 20 Sensor, item # 7 is set to Enabled. CAUTION! DO NOT change the Analog Output menu item from its default setting (Valve Position 0- 10V). AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 20 of 144 OMM-0128_0B Ph.: 800-526-0288...

  • Page 21: Tuning Menu

    Monoxide (CO) emissions specified in the combustion calibration instructions in Section 4.3 of the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM-0127 (GF-205-K). CAL Voltage values are factory adjusted for each unit prior to shipping, and so may differ from the defaults shown in the tables below.

  • Page 22: Bmk 1500/2000 Combustion Cal Menus

    100% Variable Blower Output Displays current value Set Stdby Volt 10.00 V 2.00 V 2.00 V Oxygen Level Displays current value AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 22 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 23: Bst (Boiler Sequencing Technology) Menu

    Constant Remote Outdoor BST Setpoint Mode Constant Setpt Setpoint Setpoint Reset 4-20 mA/1-5 0-20 mA/0-5 BST Remote Signl Network Network AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 23 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 24 225 hours 72 hours 44 *TEMP CTRL MENU* Disabled Enabled Disabled BST Temp Hi Limit 40°F (4.4°C) 210°F (98.9°C) 210°F (98.9°C) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 24 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 25 Unit 2 is Off Unit 4 is Not Available Unit 5 is Lead On Unit 6 is Lag Off 1 BST Units 8 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 25 of 144 Ph.: 800-526-0288 GF-206-K...

  • Page 26: Calibration Menu

    -1.0 mA 1.0 mA 0.0 mA A/F Sensitivity Power Reset Automatic or Manual Automatic Water Temp Reset Automatic or Manual Automatic AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 26 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 27 Depends on unit type/size Min Spark Amps 0.0 Amps 2.5 Amps 0.10 Amps Max Spark Amps 0.0 Amps 2.5 Amps 0.40 Amps AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 27 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 28 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA SECTION 2: OPERATION (This page intentionally blank) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 28 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 29: Section 3: Modes Of Operation

    I/O Box. Use shielded 18 to 22 AWG wire for connections. A wiring diagram is provided on the cover of the I/O Box. Refer to Section 2.10: AC Electrical Power Wiring of the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM-0127 (GF-205-K) for additional information on wiring.

  • Page 30: Indoor/Outdoor Startup

    The unit is factory preset with settings that work well in most applications. Prior to changing any temperature-related parameters, other than the setpoint, it is suggested that an AERCO representative be contacted. See Appendix A for descriptions of temperature-related functions, and Sections 2.4 – 2.10 for their range of values and factory defaults.

  • Page 31: Setting The Setpoint

    Remote Setpoint Remote Signal 4-20mA/1-5V, 0-20mA/0-5V, or Network Refer to Section 2.3: C-More Controller Menus for detailed instructions on changing menu options. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 31 of 144 Ph.: 800-526-0288 GF-206-K...

  • Page 32: Remote Setpoint Field Wiring

    While it is possible to change the settings of temperature related functions, the unit is factory preset with settings that work well in most applications. It is suggested that an AERCO representative be contacted, prior to changing any temperature related function settings. See Appendix A for descriptions of temperature-related functions, and Sections 2.4 –...

  • Page 33: Direct Drive Field Wiring

    To change back to the Direct Drive mode, simply press the AUTO/MAN switch. The REMOTE LED will again light and the MANUAL LED will go off. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 33 of 144 Ph.: 800-526-0288...

  • Page 34: Aerco Control System (Acs)

    ACS is for installations with 9 or more boilers. It utilizes only RS-485 signaling to the boiler. Installations with 1 to 8 boilers can use Boiler Sequencing Technology (BST), as described in Section 6 of the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM- 0127 (GF-205-K).

  • Page 35: Combination Control System (Ccs)

    Only the AERCO Control System (ACS) is necessary to configure this system if only a single valve is used to switch from space heating to domestic hot water. However, the ACS Relay...

  • Page 36: Combination Control System Field Wiring

    These default settings work well in most applications. It is suggested that AERCO be contacted prior to changing settings other than the unit’s setpoint. For a complete listing of temperature related function defaults, see Sections 2.4 –...

  • Page 37: Section 4: Maintenance

    For best operation and life of the unit, the following routine maintenance procedures should be performed in the time periods specified in Table 4-1. For a complete inspection check list see ASME CSD-1 chart. The following maintenance kits are available through your local AERCO Sales Representative: Model Kit P/N...

  • Page 38: Igniter-Injector

    GAS FLEX HOSE STAGED IGNITION BURNER PLATE SOLENOID FLAME DETECTOR O2 SENSOR BURNER STAGED IGNITION ASSEMBLY IGNITER-INJECTOR Figure 4-1a: BMK 750/1000 Burner Assembly AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 38 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 39 PLATE FLANGE BLOCKED INLET IGNITOR-INJECTOR SWITCH AIR/FUEL ASSEMBLY VALVE BURNER FLAME DETECTOR FLAME OBSERVATION PORT Figure 4-1c: BMK 2500/3000 Burner Assembly AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 39 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 40 SOLENOID IGNITER-INJECTOR BURNER PLATE INDEXING (CLOCKING) WASHERS LEAN O SENSOR (0-3 as required) & WASHER Figure 4-2a: BMK 750/1000 Igniter-Injector & Flame Detector Mounting Details COMPRESSION FITTING & ELBOW STAGED IGNITION SOLENOID BLOWER PLENUM INJECTOR-IGNITER ASSY WITH INDEXING FLAME (CLOCKING) WASHERS...
  • Page 41 Repeated carbon build-up is an indication that the combustion settings of the unit should be checked. To review combustion calibration procedures, refer to Section 4.3 of the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM-0127 (GF-205-K).
  • Page 42 Figure 4-3b: BMK 1500/2000 Igniter-Injector Orientation POSITION O2 SENSOR INJECTOR TUBE INSIDE THIS ARC FLAME OBSERVATION INJECTOR TUBE PORT IGNITER-INJECTOR Figure 4-3c. BMK 2500/3000 Igniter-Injector Orientation AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 42 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 43: Flame Detector

    6. Reinstall the O sensor and crush washer on the burner plate. 7. Reconnect the sensor lead wire. Reinstall the shroud on the unit. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 43 of 144 Ph.: 800-526-0288...

  • Page 44: Safety Device Testing

    Test schedules must conform to local jurisdictions. The results of the tests should be recorded in a log book. See The Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM-0127 (GF- 205-K) for a description and instructions for performing these tests.
  • Page 45 BLOCKED INLET STAGED IGNITION SWITCH ASSEMBLY 1/2" BOLTS & NUTS (4) (GAS TRAIN-to-A/F AIR FILTER VALVE) Figure 4-4a: BMK 750/1000 Burner Assembly Mounting Details (Overhead View) BLOCKED INLET BLOWER PROOF SWITCH SWITCH AIR/FUEL VALVE BLOWER O2 SENSOR FLAME DETECTOR STAGED IGNITION...
  • Page 46 19. Ensure that the igniter-injector and flame detector cutouts in the burner plate are properly aligned with the heat exchanger top flange. This completes the Benchmark 750/1000 burner inspection. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 46 of 144 OMM-0128_0B Ph.: 800-526-0288...

  • Page 47: Bmk 1500 - 3000 Burner Inspection

    BURNER PLATE A/F VALVE PLENUM 1/2” NUTS & BOLTS (4 ea.) FILTER Figure 4-5a: BMK 1500/2000 Burner Assembly Mounting Details AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 47 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 48 HEX NUTS 1/2” NUTS (8 each) & BOLTS (4 each) AIR FILTER GAS TRAIN Figure 4-5c: BMK 2500/3000 Burner Assembly Mounting Details AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 48 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 49 9. Loosen and remove the four 5/16 x 1-3/4” bolts, washers, and nuts from the blower plenum where it attaches to the blower. See Figure 4-5a & 4-5b (BMK 1500/2000) or Figures 4-5c & 4-5d (BMK 2500/3000). AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 49 of 144 Ph.: 800-526-0288...
  • Page 50 Nm). 16. Ensure that the igniter-injector and flame detector cutouts in the burner plate are properly aligned with the heat exchanger top flange. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 50 of 144 OMM-0128_0B Ph.: 800-526-0288...

  • Page 51: Condensate Drain Trap

    (shown in Figure 2-6a and 2-6b of the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM-0127 (GF-205-K)). This trap should be inspected and cleaned in accordance with the maintenance schedule shown in Table 4-1, above, to ensure proper operation.

  • Page 52: Air Filter Cleaning And Replacement

    4. Using a flat-tip screwdriver or 5/16” nut driver, loosen the clamp securing the filter to the inlet flange of the air/fuel valve. Remove the filter and clamp. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 52 of 144 OMM-0128_0B Ph.: 800-526-0288...

  • Page 53: Water Cutoff (Lwco) Capacitor Integrity Test

    Shrink Tubing) Hot Water Connector Outlet Pipe (to Shell Harness) LWCO Probe Terminal Figure 4-9: LWCO Probe Location (BMK1500 Shown) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 53 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...

  • Page 54: Low Water Cutoff (Lwco) - Capacitor Electrical Short Test

    TO PIN #6 19-PIN SHELL HARNESS CABLE CONNECTOR LWCO PROBE ASSEMBLY CONNECTOR Figure 4-11: Connecting Ohmmeter between LWCO Probe & Shell Harness Cable AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 54 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 55: Low Water Cutoff (Lwco) - Standard C-More Test

    2. Inspect all piping and connections to the unit. 3. Inspect exhaust vent and air inlet duct work (if applicable). 4. Perform initial startup per Section 4 of the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM-0127 (GF-205-K).

  • Page 56: Spark Monitor (Ac Current Transducer)

    I/O board’s Spark Signal terminals, red wire to the positive (+) terminal and black to negative (-). AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 56 of 144 OMM-0128_0B Ph.: 800-526-0288...

  • Page 57: Section 5: Troubleshooting Guide

    5.1 INTRODUCTION This troubleshooting guide is intended to aid service/maintenance personnel in isolating the cause of a fault in Benchmark 750 through 3000 boilers. The troubleshooting procedures contained herein are presented in tabular form on the following pages. These tables are comprised of three columns labeled: Fault Indication, Probable Cause and Corrective Action.
  • Page 58 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA SECTION 5 – TROUBLESHOOTING GUIDE (This page intentionally blank) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 58 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 59 Air/Fuel Valve dial. Hard light. Check igniter-injector for soot or erosion of electrode. Check injector solenoid valve to insure proper open/close operation. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 59 of 144 Ph.: 800-526-0288...
  • Page 60 Probable causes from 3 to 16 for AIRFLOW See CORRECTIVE ACTIONS from 3 to 12 for AIRFLOW FAULT FAULT DURING IGNITION applies for this fault. DURING IGNITION. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 60 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 61 120VAC at the valve input terminals. If 120VAC is not present, the IGST board in the C-More Controller may be defective. Refer fault to qualified service personnel. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 61 of 144 Ph.: 800-526-0288...
  • Page 62 Check combustion calibration using the procedure in Section 4-3 of Poor combustion calibration. DURING RUN the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM-0127 (GF-205-K). Debris on burner. Remove the burner and inspect for any carbon build-up or debris.
  • Page 63 Press CLEAR button and restart unit. If fault persists, contact Communication fault has occurred between the IGN BOARD PMC board and Ignition/Stepper (IGST) board. qualified Service Personnel. COMM FAULT AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 63 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 64 Check “Heartbeat” LED DS1 and verify it is blinking ON & OFF Defective IGST Board. every second. If not, replace IGST Board. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 64 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 65 Measure gas pressure upstream of the SSOV Actuator(s) with the Incorrect supply gas pressure. unit firing. Ensure it is above the values in Table 5-1 (BMK 750- 2500) or or above the value calculated in step 4 in section 5.2 (BMK 3000) of the Benchmark 750 –...
  • Page 66 Check resistance of sensor to determine if it is within specification. SENSOR Incorrect Sensor. Ensure that the correct sensor is installed. FAULT AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 66 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 67 SSOV switch closed for 15 seconds during run. Replace or adjust micro-switch in SSOV actuator. If fault persists, SSOV FAULT replace actuator. DURING RUN AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 67 of 144 Ph.: 800-526-0288 GF-206-K...
  • Page 68 Defective IGST Board. Check “Heartbeat” LED DS1 and verify it is blinking ON & OFF every second. If not, replace IGST Board. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 68 of 144 OMM-0128_0B Ph.: 800-526-0288...

  • Page 69: Additional Faults Without Specific Fault Messages

    Check to ensure that the IGST and Power Supply Boards are Rev. E Air/Fuel Valve “hunting” at in C-More Controller are or higher. the 70% Valve Position outdated. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 69 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 70 BRASS HEX HEAD (Remove to access the Gas Pressure Adjustment Screw). COVER SCREW Figure 5-1: SSOV Actuator With Gas Pressure Adjustment (SKP25) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 70 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 71: Appendix A: Boiler Menu Item Descriptions

    Displays the current going to the ignition transformer. Run Cycles Displays the total number of run cycles. Run Hours Displays total run time of unit in hours. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 71 of 144 Ph.: 800-526-0288 GF-206-K...
  • Page 72 = 100) does not appear in this menu, but can be displayed by pushing the Auto/Man button on the C-More Control Panel’s front face. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 72 of 144 OMM-0128_0B Ph.: 800-526-0288...

  • Page 73: Table A-2: Setup Menu Item Descriptions

    4-digit serial # on the Code Plate, e.g., G-12- Software Version Identifies the current software version of the C-More Controller. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 73 of 144 Ph.: 800-526-0288...

  • Page 74: Table A-3: Configuration Menu Item Descriptions

    Unit Type BMK Blr LN, BMK Blr LN Dual. Sets unit size, depending on the Unit Type: 750 MBH (220 kW), 1000 MBH (293 kW), 1500 MBH (439.6 Unit Size kW), 2000 MBH (586.1 kW), 2500 MBH (732.6 kW), 3000 MBH (879.2 kW)
  • Page 75 Valve Position In reaches the Start Level value (Calibration menu item 37). There will not be a one minute delay when firing at the 29% Valve Position level. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 75 of 144 Ph.: 800-526-0288...
  • Page 76 When set to Enabled, the AERtrim menu options appears. O2 Trim Menu BST Menu When set to Enabled, the BST menu options appears. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 76 of 144 OMM-0128_0B Ph.: 800-526-0288...

  • Page 77: Table A-4: Tuning Menu Item Descriptions

    Range = 0 - 240 seconds Default = 20 seconds Timer Allows Tuning menu options to be reset to their Factory Reset Defaults? Default values. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 77 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...

  • Page 78: Table A-5: Combustion Calibration Menu Item Descriptions

    The Level 2 Password must be entered to view the options in the Combustion Cal menu. This Menu is used during the Combustion Calibration procedures described in Section 4-3 of the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide, OMM-0127 (GF-205- TABLE A-5: COMBUSTION CAL Menu Item Descriptions...

  • Page 79: Table A-6: Calibration Menu Item Descriptions

    Allows adjustment of the analog input from -5.0% to +5.0%. Allows adjustment of the water Flow Rate Input from Flow In Adj -5.0% to +5.0%. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 79 of 144 Ph.: 800-526-0288...
  • Page 80 – FFWD Temp Offset Range: -20 to + 20 (either ºF or °C) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 80 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 81 Allows the adjustment of the maximum spark current required at Max Spark Amps the spark transformer input. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 81 of 144 Ph.: 800-526-0288 GF-206-K...
  • Page 82 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX A: BOILER MENU DESCRIPTIONS (This page intentionally blank) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 82 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 83: Appendix B: Startup, Status, & Fault Messages

    The time and date are also displayed. Prompts the operator to wait. WAIT WARMUP Displayed for 2 minutes during the initial warm-up only. XX sec AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 83 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...

  • Page 84: Fault Messages

    The Low Water Cutoff board is indicating low water level. LEVEL NETWORK COMM The RS-485 network information is not present or is corrupted. FAULT AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 84 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 85 A failure has been detected in one of the relays that control the SSOV. FAILURE STEPPER MOTOR The Stepper Motor failed to move the Air/Fuel Valve to the desired position. FAILURE AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 85 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 86 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX B – STARTUP, STATUS, AND FAULT MESSAGES (This page intentionally blank) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 86 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 87: Appendix C: Sensor Resistance/Voltage Chart

    1260.0 2.47 87.8 1285.6 2.50 93.3 1311.4 2.52 98.9 1337.7 2.54 104.4 1364.2 2.56 1391.0 2.58 115.6 1418.2 121.1 1445.7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 87 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 88 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX C – SENSOR RESISTANCE/VOLTAGE CHART (This page intentionally blank) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 88 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 89: Appendix D: Recommended Periodic Testing

    Recommended Periodic Testing ITEM FREQUENCY ACTION BY REMARKS NOTE: Refer to indicated sections of this manual and the Benchmark 750 – 3000 Boiler Installation and Startup Guide Guide OMM-0127 (GF-205-K) for detailed procedures. Gauges, monitors Visual inspection and record readings in Daily...
  • Page 90 See Section 4.7. Annually Verify oxygen level is between 3% and 8% Oxygen (O ) Level Monthly Operator during boiler operation. AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 90 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 91: Appendix E: Indoor/Outdoor Reset Ratio Charts

    AIR TEMP RESET RATIO °F °C 15.6 12.8 10.0 -1.1 -3.9 -6.7 -9.4 -12.2 -15.0 -17.8 -20.6 -23.3 -26.1 -28.9 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 91 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 92 AIR TEMP RESET RATIO °F °C 21.1 18.3 15.6 12.8 10.0 -1.1 -3.9 -6.7 -9.4 -12.2 -15.0 -17.8 -20.6 -23.3 -26.1 -28.9 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 92 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 93 RESET RATIO °F °C 26.7 23.9 21.1 18.3 15.6 12.8 10.0 -1.1 -3.9 -6.7 -9.4 -12.2 -15.0 -17.8 -20.6 -23.3 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 93 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 94 AIR TEMP RESET RATIO °F °C 32.2 29.4 26.7 23.9 21.1 18.3 15.6 12.8 10.0 -1.1 -3.9 -6.7 -9.4 -12.2 -15.0 -17.8 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 94 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 95: Appendix F: Benchmark 750/1000 Part Lists

    Benchmark 750 – 1000 Part List AERCO International, 01/25/2017 Inc. Blauvelt, NY 10913 28321-TAB rev D – 28253-TAB rev D Sheet 1 of 6 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 95 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 96 Benchmark 750 – 1000 Part List AERCO International, 01/25/2017 Inc. Blauvelt, NY 10913 28321-TAB rev D – 28253-TAB rev D Sheet 2 of 6 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 96 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 97 Benchmark 750 – 1000 Part List AERCO International, 01/25/2017 Inc. Blauvelt, NY 10913 28321-TAB rev D – 28253-TAB rev D Sheet 3 of 6 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 97 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 98 Benchmark 750 – 1000 Part List AERCO International, 01/25/2017 Inc. Blauvelt, NY 10913 28321-TAB rev D – 28253-TAB rev D Sheet 4 of 6 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 98 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 99 Benchmark 750 – 1000 Part List AERCO International, 01/25/2017 Inc. Blauvelt, NY 10913 28321-TAB rev D – 28253-TAB rev D Sheet 5 of 6 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 99 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 100 Benchmark 750 – 1000 Part List AERCO International, 01/25/2017 Inc. Blauvelt, NY 10913 28321-TAB rev D – 28253-TAB rev D Sheet 6 of 6 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 100 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 101 DAMPING ORIFICE: SSOV Benchmark 750-1000 FM Gas Train AERCO International, 04/11/2017 Inc. Blauvelt, NY 10913 22140-1 rev G Sheet 1 of 1 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 101 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 102 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX F – BENCHMARK 750/1000 PART LISTS Benchmark 750-1000 Burner, Blower, Air/Fuel Valve – 24276 rev J Item Qty Part # Description Item Part # Description 42140 PLATE: BURNER 53033 WASHER: CLOCKING...

  • Page 103: Appendix G: Benchmark 1500/2000 Part Lists

    Benchmark 1500/2000 Part List 01/03/2017 International, Inc. 29313-TAB rev E, 29337-TAB rev E Blauvelt, NY 10913 Sheet 1 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 103 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 104 AERCO Benchmark 1500/2000 Part List 01/03/2017 International, Inc. 29313-TAB rev E, 29337-TAB rev E Blauvelt, NY 10913 Sheet 2 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 104 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 105 Benchmark 1500/2000 Part List 01/03/2017 International, Inc. 29313-TAB rev E, 29337-TAB rev E Blauvelt, NY 10913 Sheet 3 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 105 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 106 AERCO Benchmark 1500/2000 Part List 01/03/2017 International, Inc. 29313-TAB rev E, 29337-TAB rev E Blauvelt, NY 10913 Sheet 4 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 106 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 107 Benchmark 1500/2000 Part List 01/03/2017 International, Inc. 29313-TAB rev E, 29337-TAB rev E Blauvelt, NY 10913 Sheet 5 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 107 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 108 AERCO Benchmark 1500/2000 Part List 01/03/2017 International, Inc. 29313-TAB rev E, 29337-TAB rev E Blauvelt, NY 10913 Sheet 6 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 108 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 109 Benchmark 1500/2000 Part List 01/03/2017 International, Inc. 29313-TAB rev E, 29337-TAB rev E Blauvelt, NY 10913 Sheet 7 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 109 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 110 TUBING: FLEXIBLE 16" AERCO Benchmark 1500/2000 Gas Train (Korea) 03/17/2017 International, Inc. Blauvelt, NY 10913 P/N 22240 rev D Sheet 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 110 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 111 AERCO Benchmark 1500/2000 Gas Train (Korea) 03/17/2017 International, Inc. P/N 22240 rev C Blauvelt, NY 10913 Sheet 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 111 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 112 WASHER: CLOCKING AERCO Benchmark 1500 - 2000 Burner Assembly 09/22/2015 International, Inc. 24378-TAB rev F Blauvelt, NY 10913 Sheet 1 of 1 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 112 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 113: Appendix H: Benchmark 2500/3000 Part Lists

    Benchmark 2500/3000 Part List 12/15/2016 International, Inc. Blauvelt, NY 10913 28536-TAB rev C, 28382-TAB rev D Sheet 1 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 113 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 114 AERCO Benchmark 2500/3000 Part List 12/15/2016 International, Inc. 28536-TAB rev C, 28382-TAB rev D Blauvelt, NY 10913 Sheet 2 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 114 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 115 Benchmark 2500/3000 Part List 12/15/2016 International, Inc. Blauvelt, NY 10913 28536-TAB rev C, 28382-TAB rev D Sheet 3 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 115 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 116 AERCO Benchmark 2500/3000 Part List 12/15/2016 International, Inc. 28536-TAB rev C, 28382-TAB rev D Blauvelt, NY 10913 Sheet 4 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 116 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 117 Benchmark 2500/3000 Part List 12/15/2016 International, Inc. 28536-TAB rev C, 28382-TAB rev D Blauvelt, NY 10913 Sheet 5 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 117 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 118 AERCO Benchmark 2500/3000 Part List 12/15/2016 International, Inc. 28536-TAB rev C, 28382-TAB rev D Blauvelt, NY 10913 Sheet 6 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 118 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 119 Benchmark 2500/3000 Part List 12/15/2016 International, Inc. 28536-TAB rev C, 28382-TAB rev D Blauvelt, NY 10913 Sheet 7 of 7 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 119 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 120 TUBING: FLEXIBLE 26" Benchmark 2500 Gas Train (Korea) AERCO 04/17/2017 International, Inc. Blauvelt, NY 10913 P/N 22244 rev F Sheet 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 120 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 121 AERCO Benchmark 2500 Gas Train (Korea) 04/17/2017 International, Inc. P/N 22244 rev F Blauvelt, NY 10913 Sheet 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 121 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 122 GAGE: LOW PRESSURE 0-10 in./H2O AERCO Benchmark 3000 Gas Train (Korea) 04/17/2017 International, Inc. P/N 22215 rev H Blauvelt, NY 10913 Sheet 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 122 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...
  • Page 123 AERCO Benchmark 3000 Gas Train (Korea) 04/17/2017 International, Inc. P/N 22215 rev H Blauvelt, NY 10913 Sheet 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 123 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 124 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX H – BENCHMARK 2500/3000 PART LISTS (This page intentionally blank) AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 124 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 125: Appendix I: Wiring Diagrams

    Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Appendix I: WIRING DIAGRAMS Benchmark 750/1000 – Drawing Number: 68038 rev G Sheet 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 125 of 144 Ph.: 800-526-0288...
  • Page 126 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 750/1000 – Drawing Number: 68038 rev G Sheet 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 126 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 127 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 1500/2000 – Drawing Number 68050 rev C page 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 127 of 144 Ph.: 800-526-0288...
  • Page 128 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 1500/2000 – Drawing Number 68050 rev C page 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 128 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 129 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 1500/2000 DBB – Drawing Number 68071 rev C page 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 129 of 144 Ph.: 800-526-0288...
  • Page 130 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 1500/2000 DBB – Drawing Number 68071 rev C page 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 130 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 131 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 3000 208 VAC – Diagram 68040 rev F, Sheet 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 131 of 144 Ph.: 800-526-0288...
  • Page 132 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 3000 208 VAC – Drawing Number: 68040 rev F, Sheet 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 132 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 133 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 3000 460 VAC – Drawing Number: 68041 rev F Sheet 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 133 of 144 Ph.: 800-526-0288...
  • Page 134 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 3000 460 VAC – Drawing Number: 68041 rev E Sheet 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 134 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 135 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 2500 208 VAC – Drawing Number: 68060 rev C Sheet 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 135 of 144 Ph.: 800-526-0288...
  • Page 136 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 2500 208 VAC – Drawing Number: 68060 rev C Sheet 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 136 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 137 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 2500/3000 208 VAC DBB – Drawing Number: 68062 rev C Sheet 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 137 of 144 Ph.: 800-526-0288...
  • Page 138 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 2500/3000 208 VAC DBB – Drawing Number: 68062 rev C Sheet 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 138 of 144 OMM-0128_0B Ph.: 800-526-0288...
  • Page 139 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 2500/3000 460 VAC DBB – Drawing Number: 68063 rev B Sheet 1 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 139 of 144 Ph.: 800-526-0288...
  • Page 140 Benchmark 750-3000 Boiler Operation, Service, Maintenance Guide - KOREA APPENDIX I – WIRING DIAGRAMS Benchmark 2500/3000 460 VAC DBB – Drawing Number: 68063 rev B Sheet 2 of 2 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 140 of 144 OMM-0128_0B Ph.: 800-526-0288...

  • Page 141: Appendix J: C-More Controller Views

    PUSH BUTTON P/N 124949 SWITCHES P/N 124954 VERTICAL OVERLAY, BENCHMARK P/N 124718 Figure J-1 – C-More Controller - Exploded View AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 141 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 142 EXT. SENSOR/COMM HARNESS CONNECTOR (24 PIN) TO INPUT/OUTPUT (I/O) BOX SENSOR HARNESS CONNECTOR (7 PIN) Figure J-2: C-More Controller Rear View AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 142 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

  • Page 143: Appendix K: Recommended Spares

    BMK 750/1000 46023 BMK 1500 46042 Burner BMK 2000 46044 BMK 2500 46039 BMK 3000 46038 61026 Lean Oxygen Sensor AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 OMM-0128_0A Page 143 of 144 Ph.: 800-526-0288 GF-206-K 07/17/2017...
  • Page 144 DIR 17-050: Corrected part numbers, kit numbers and figure 07/17/2017 Chris Blair numbers in Section 4: Maintenance © AERCO International, Inc., 2017 AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 144 of 144 OMM-0128_0B Ph.: 800-526-0288 07/17/2017...

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