Benchmark 6000 Boiler
Installation, Operation & Maintenance Manual
OMM-0086_0D
AERCO International, Inc.
•
100 Oritani Dr.
•
Blauvelt, NY 10913
Page
3
of
210
GF-133
Ph.: 800-526-0288
03/20/14
TABLE OF CONTENTS
FOREWORD
.......................................................................................................................................... 7
CHAPTER 1.
SAFETY PRECAUTIONS ................................................................................................ 11
1.1 WARNINGS & CAUTIONS ..................................................................................................................................... 11
1.2 EMERGENCY SHUTDOWN.................................................................................................................................... 12
1.3 PROLONGED SHUTDOWN ................................................................................................................................... 13
1.4
MASSACHUSETTS INSTALLATIONS
............................................................................................... 13
CHAPTER 2.
INSTALLATION ............................................................................................................... 15
2.1 INTRODUCTION ................................................................................................................................................... 15
2.2 RECEIVING THE UNIT ........................................................................................................................................... 15
2.3 MOVING & UNPACKING THE UNIT ...................................................................................................................... 15
2.4 SITE PREPARATION .............................................................................................................................................. 16
2.4.1 Installation Clearances ................................................................................................................................. 16
2.4.2 Setting the Unit ............................................................................................................................................ 18
2.5 SUPPLY AND RETURN PIPING .............................................................................................................................. 19
2.6 PRESSURE RELIEF VALVE & PRESSURE/TEMPERATURE INDICATOR INSTALLATION ............................................ 20
2.6.1 Pressure Relief Valve Installation ................................................................................................................. 20
2.6.2 Pressure/Temperature Gauge Installation ................................................................................................... 21
2.7 CONDENSATE DRAIN & PIPING ............................................................................................................................ 22
2.8 GAS SUPPLY PIPING ............................................................................................................................................. 23
2.8.1 Gas Supply Specifications ............................................................................................................................. 24
2.8.2 Manual Gas Shutoff Valve ............................................................................................................................ 24
2.8.3 External Gas Supply Regulator ..................................................................................................................... 24
2.8.3.1 Massachusetts Installations Only
.......................................................................................................... 24
2.8.3.2 All Installations (Except Massachusetts)
............................................................................................... 24
2.9 AC ELECTRICAL POWER WIRING .......................................................................................................................... 25
2.9.1 Electrical Power Requirements .................................................................................................................... 27
2.10 FIELD CONTROL WIRING .................................................................................................................................... 27
2.10.1 OUTDOOR AIR IN Terminal ......................................................................................................................... 29
2.10.2 COMBUSTION AIR Terminal ....................................................................................................................... 30
2.10.3 O
2
SENSOR Terminals ................................................................................................................................. 30
2.10.4 SPARK SIGNAL Terminals ............................................................................................................................ 30
2.10.5 ANALOG IN Terminals ................................................................................................................................. 30
2.10.6 B.M.S. (PWM) IN Terminals ........................................................................................................................ 30
2.10.7 SHIELD Terminals ........................................................................................................................................ 30
2.10.8 ANALOG OUT Terminals ............................................................................................................................. 30
2.10.9 RS485 Comm Terminals .............................................................................................................................. 31
2.10.10 RS232 Comm Terminals ............................................................................................................................ 31
2.10.11 VFD/BLOWER Terminals ........................................................................................................................... 31
2.10.12 Interlock Terminals ................................................................................................................................... 31
2.10.12.1
Remote Interlock In (OUT & IN)......................................................................................................... 31
2.10.12.2
Delayed Interlock In (OUT & IN) ........................................................................................................ 31
2.10.13 FAULT RELAY Terminals ............................................................................................................................ 32
2.10.14 AUX.RELAY Terminals ............................................................................................................................... 32
2.11 FLUE GAS VENT INSTALLATION ......................................................................................................................... 32
2.12 COMBUSTION AIR .............................................................................................................................................. 33
2.12.1 Combustion From Outside the Building ..................................................................................................... 33
2.12.2 Combustion Air from Inside the Building ................................................................................................... 33
2.13 DUCTED COMBUSTION AIR ............................................................................................................................... 34
2.14 SEQUENCING VALVE INSTALLATION .................................................................................................................. 34
CHAPTER 3.
OPERATION .................................................................................................................... 37
3.1 INTRODUCTION ................................................................................................................................................... 37
