AERCO BMK 2000DF - Manual (Page 3)

Benchmark 1500DF - 2000DF Boilers
Installation, Operation & Maintenance Manual (IOMM)
OMM-0098_0A AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 3 of 196
GF-144 Ph.: 800-526-0288 04/01/2014
TABLE OF CONTENTS
FOREWORD ......................................................................................................................................... 7
CHAPTER 1. SAFETY PRECAUTIONS ......................................................................................... 11
1.1 WARNINGS & CAUTIONS ................................................................................................................... 11
1.2 EMERGENCY SHUTDOWN ................................................................................................................. 12
1.3 PROLONGED SHUTDOWN ................................................................................................................. 12
CHAPTER 2. INSTALLATION ........................................................................................................ 15
2.1 INTRODUCTION ................................................................................................................................... 15
2.2 RECEIVING THE UNIT ......................................................................................................................... 15
2.3 UNPACKING ......................................................................................................................................... 15
2.4 SITE PREPARATION ........................................................................................................................... 16
2.4.1 Installation Clearances .................................................................................................................................... 16
2.4.2 Setting the Unit ............................................................................................................................................... 17
2.5 SUPPLY AND RETURN PIPING .......................................................................................................... 19
2.6 PRESSURE RELIEF VALVE INSTALLATION ..................................................................................... 19
2.7 CONDENSATE DRAIN & PIPING ........................................................................................................ 20
2.8 GAS SUPPLY PIPING .......................................................................................................................... 22
2.8.1 Gas Supply Specifications ............................................................................................................................... 22
2.8.2 Manual Gas Shutoff Valve .............................................................................................................................. 22
2.8.3 External Gas Supply Regulator ........................................................................................................................ 23
2.9 AC ELECTRICAL POWER WIRING ..................................................................................................... 24
2.9.1 Electrical Power Requirements ....................................................................................................................... 25
2.10 FIELD CONTROL WIRING ................................................................................................................. 26
2.10.1 Outdoor Air In (OUT) & Air Sensor Common (COM) .................................................................................... 28
2.10.2 COMBUSTION AIR Terminal .......................................................................................................................... 29
2.10.3 O
2
SENSOR (O2+ & O2-) ................................................................................................................................ 29
2.10.4 SPARK SIGNAL (FLW+ & FLW-) ...................................................................................................................... 29
2.10.5 Analog In (+ & -) ............................................................................................................................................ 29
2.10.6 B.M.S. (PWM) In (BMS+ & BMS-) .................................................................................................................. 29
2.10.7 Shield (SHLD & SHLD) .................................................................................................................................... 29
2.10.8 Analog Output (+ & -) ................................................................................................................................... 29
2.10.9 RS-485 Comm (+, GND, & -) .......................................................................................................................... 30
2.10.10 RS-232 Comm (TxD & RxD) ......................................................................................................................... 30
2.10.11 VFD/Blower (0-10 & AGND) ........................................................................................................................ 30
2.10.12 Interlocks .................................................................................................................................................... 30
2.10.13 Fault Relay (NC, COM, & NO) ...................................................................................................................... 31
2.10.14 Auxiliary Relay Contacts (NC, COM, & NO) ................................................................................................. 31
2.11 FLUE GAS VENT INSTALLATION ..................................................................................................... 31
2.12 COMBUSTION AIR ............................................................................................................................. 32
2.12.1 Combustion From Outside the Building ....................................................................................................... 32
2.12.2 Combustion Air from Inside the Building ...................................................................................................... 32
2.13 DUCTED COMBUSTION AIR ............................................................................................................. 32
2.14 SEQUENCING VALVE INSTALLATION............................................................................................. 33
CHAPTER 3. OPERATION .............................................................................................................. 35
3.1 INTRODUCTION ................................................................................................................................... 35
3.2 CONTROL PANEL DESCRIPTION ...................................................................................................... 35
3.3 CONTROL PANEL MENUS .................................................................................................................. 39
3.3.1 Menu Processing Procedure ........................................................................................................................... 39
3.4 OPERATING MENU ............................................................................................................................. 41