Aerco 750 Installation And Startup Manual page 3

Benchmark 750-3000 Installation & Startup Guide - KOREA
CONTENTS
2.12 FLUE GAS VENT INSTALLATION ....................................................................................38
2.13 COMBUSTION AIR ...........................................................................................................39
2.13.1 DUCTED COMBUSTION AIR .......................................................................................................... 39
2.14 BENCHMARK PUMP RELAY ...........................................................................................40
2.15 SEQUENCING ISOLATION VALVE INSTALLATION ........................................................41
SECTION 3: START SEQUENCE ........................................................................ 43
3.1 INTRODUCTION.................................................................................................................43
3.2 START SEQUENCE ...........................................................................................................43
3.3 START/STOP LEVELS .......................................................................................................49
3.4 START/STOP LEVELS - AIR/FUEL & ENERGY INPUT .....................................................50
SECTION 4: INITIAL START-UP ........................................................................ 53
4.1 INITIAL START-UP REQUIREMENTS ................................................................................53
4.2 TOOLS & INSTRUMENTS FOR COMBUSTION CALIBRATION ........................................53
4.2.1 Required Tools & Instrumentation ................................................................................................. 53
4.2.2 Installing Gas Supply Manometer - BMK 750 & 1000 ONLY .......................................................... 54
4.2.3 Gas Supply Gauge - BMK 1500 - 3000 ONLY ................................................................................ 55
4.2.4 Accessing the Analyzer Probe Port ................................................................................................. 57
4.3 COMBUSTION CALIBRATION ...........................................................................................58
4.4 REASSEMBLY ....................................................................................................................63
4.5 OVER-TEMPERATURE LIMIT SWITCHES ........................................................................64
4.5.1 Digital Alarm Switch Checks and Adjustments ............................................................................... 65
SECTION 5: SAFETY DEVICE TESTING .............................................................. 67
5.1 TESTING OF SAFETY DEVICES .......................................................................................67
5.2 LOW GAS PRESSURE TEST .............................................................................................68
5.2.1 LOW GAS PRESSURE TEST: BMK 750 - 2500 .................................................................................. 68
5.2.2 LOW GAS PRESSURE TEST: BMK 3000 Only.................................................................................... 70
5.3 HIGH GAS PRESSURE TEST ............................................................................................72
5.3.1 HIGH GAS PRESSURE TEST: BMK 750 - 2500 ................................................................................. 72
5.3.2 HIGH GAS PRESSURE TEST: BMK 3000 Only ................................................................................... 74
5.4 LOW WATER LEVEL FAULT TEST ....................................................................................76
5.5 WATER TEMPERATURE FAULT TEST .............................................................................77
5.6 INTERLOCK TESTS ...........................................................................................................79
5.6.1 Remote Interlock Test .................................................................................................................... 79
5.6.2 Delayed Interlock Test .................................................................................................................... 79
5.7 FLAME FAULT TEST ..........................................................................................................80
5.8 AIR FLOW FAULT TESTS - BLOWER PROOF & BLOCKED INLET SWITCHES ..............81
5.8.1 Blower Proof Switch Test ............................................................................................................... 81
5.8.2 Blocked Inlet Switch Test................................................................................................................ 83
5.9 SSOV PROOF OF CLOSURE SWITCH CHECK ................................................................84
5.10 PURGE SWITCH OPEN DURING PURGE .......................................................................84
5.11 IGNITION SWITCH OPEN DURING IGNITION.................................................................87
5.12 SAFETY PRESSURE RELIEF VALVE TEST ....................................................................87
SECTION 6: BOILER SEQUENCING TECHNOLOGY ............................................ 89
OMM-0127_0B
GF-205-K
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
Ph.: 800-526-0288
Page 3 of 116
07/17/2017