Benchmark 750/1000 Boiler
Installation, Operation & Maintenance Manual
Page
4
of
192
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
OMM-0082_0J
05/21/2014
Ph.: 800-526-0288
GF-130
2.12.2 Combustion Air from Inside the Building ................................................................................. 32
2.13 DUCTED COMBUSTION AIR ............................................................................................................. 33
2.14 BENCHMARK PUMP RELAY OPTION ................................................................................................ 33
2.15 SEQUENCING ISOLATION VALVE INSTALLATION ............................................................................. 34
CHAPTER 3.
OPERATION ......................................................................................... 37
3.1 INTRODUCTION ................................................................................................................................. 37
3.2 CONTROL PANEL DESCRIPTION ......................................................................................................... 37
3.3 CONTROL PANEL MENUS .................................................................................................................. 41
3.3.1 Menu Processing Procedure ....................................................................................................... 41
3.4 OPERATING MENU ............................................................................................................................ 43
3.5 SETUP MENU ..................................................................................................................................... 43
3.6 CONFIGURATION MENU .................................................................................................................... 44
3.7 TUNING MENU .................................................................................................................................. 46
3.8 COMBUSTION CAL MENU .................................................................................................................. 47
3.9 BST (Boiler Sequencing Technology ) Menu ...................................................................................... 47
3.10 START SEQUENCE ............................................................................................................................ 50
3.11 START/STOP LEVELS ........................................................................................................................ 53
CHAPTER 4.
INITIAL START-UP ............................................................................... 55
4.1 INITIAL START-UP REQUIREMENTS ................................................................................................... 55
4.2 TOOLS AND INSTRUMENTATION FOR COMBUSTION CALIBRATION ................................................ 55
4.2.1 Required Tools & Instrumentation ............................................................................................. 56
4.2.2 Installing Gas Supply Manometer ............................................................................................... 56
4.2.3 Accessing the Analyzer Probe Port ............................................................................................. 57
4.3 NATURAL GAS COMBUSTION CALIBRATION ..................................................................................... 58
4.4 PROPANE COMBUSTION CALIBRATION............................................................................................. 61
4.5 REASSEMBLY AFTER COMBUSTION CALIBRATION ............................................................................ 64
4.6 OVER-TEMPERATURE LIMIT SWITCHES ............................................................................................. 65
4.6.1 Digital Alarm Switch Checks and Adjustments ........................................................................... 66
CHAPTER 5.
MODE OF OPERATION ........................................................................ 69
5.1 INTRODUCTION ................................................................................................................................. 69
5.2 INDOOR/OUTDOOR RESET MODE ..................................................................................................... 69
5.2.1 Reset Ratio .................................................................................................................................. 69
5.2.2 Building Reference Temperature ................................................................................................ 69
5.2.3 Outdoor Air Temperature Sensor Installation ............................................................................ 69
5.2.4 Indoor/Outdoor Startup ............................................................................................................. 70
5.3 CONSTANT SETPOINT MODE ............................................................................................................. 70
5.3.1 Setting the Setpoint .................................................................................................................... 70
5.4 REMOTE SETPOINT MODES ............................................................................................................... 71
5.4.1 Remote Setpoint Field Wiring ..................................................................................................... 72
5.4.2 Remote Setpoint Startup ............................................................................................................ 72
5.5 DIRECT DRIVE MODES ....................................................................................................................... 72
5.5.1 Direct Drive Field Wiring ............................................................................................................. 73
5.5.2 Direct Drive Startup .................................................................................................................... 73
5.6 AERCO CONTROL SYSTEM (ACS) ........................................................................................................ 73
