User Manual Owner's manual

AM Series Boilers and Water Heaters
Installation, Operation & Maintenance Manual (IOMM)
OMM-0100_0B AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 3 of 156
GF-146 Ph.: 800-526-0288 PRI - 07/14/14
TABLE OF CONTENTS
FOREWORD ................................................................................................................ 7
CHAPTER 1: GENERAL INFORMATION ........................................................................ 9
1.1 WARNINGS & CAUTIONS ..................................................................................................................... 9
1.2 EMERGENCY SHUTDOWN ................................................................................................................. 12
CHAPTER 2: FUNCTIONAL OVERVIEW ...................................................................... 13
2.1 INTRODUCTION ................................................................................................................................... 13
2.2 INTENDED USE – BOILERS ................................................................................................................ 13
2.3 INTENDED USE – WATER HEATERS ................................................................................................ 13
2.4 AM SERIES COMPONENT DIAGRAMS .............................................................................................. 14
2.5 AM SERIES FUNCTIONAL SCHEMATICS .......................................................................................... 22
2.5.1 AM 399 / 500 Functional Schematic ............................................................................................................... 22
2.5.2 AM 750 Functional Schematic ........................................................................................................................ 23
2.5.3 AM1000 Functional Schematic ....................................................................................................................... 24
2.5.4 Boiler Efficiency in Outdoor Reset Mode........................................................................................................ 25
CHAPTER 3: INSTALLATION ...................................................................................... 27
3.1 CHOOSING THE INSTALLATION LOCATION .................................................................................... 27
3.2 BOILER AND WATER HEATER INSTALLATION LOCATION FACTORS .......................................... 28
3.3 SAFETY CONCERNS ........................................................................................................................... 29
3.4 CLOSET AND ALCOVE INSTALLATION ............................................................................................. 29
3.5 CLEARANCES FOR INSTALLATION AND SERVICING ..................................................................... 29
3.6 CLEARANCES TO COMBUSTIBLE MATERIAL .................................................................................. 30
3.7 VENT AND COMBUSTION AIR PIPING .............................................................................................. 31
3.8 PREVENTION OF COMBUSTION AIR CONTAMINATION ................................................................. 31
3.9 TRANSPORTING THE UNIT ................................................................................................................ 31
3.10 UNPACKING AND INSTALLING THE UNIT ...................................................................................... 32
3.11 SUPPLY AND RETURN PIPING - BOILERS ..................................................................................... 34
3.11.1 Water Quality - Boilers ................................................................................................................................. 35
3.11.2 System Piping Methods - Boilers .................................................................................................................. 35
3.11.3 Freeze Protection - Boilers............................................................................................................................ 35
3.11.4 Floor Radiant Heating Systems - Boilers ....................................................................................................... 36
3.11.5 Near Boiler Heating Piping Components - Boilers ........................................................................................ 36
3.11.6 Safety Relief Valve - Boilers .......................................................................................................................... 38
3.11.7 Flow Switch ................................................................................................................................................... 39
3.11.8 Low Water Cutoff (LWCO) ............................................................................................................................ 39
3.11.9 Expansion Tank and Makeup Water - Boilers ............................................................................................... 40
3.11.10 Circulator Heating Pump - Boilers............................................................................................................... 40
3.11.11 Sizing the Heating System - Boilers ............................................................................................................. 40
3.11.12 Domestic Hot Water System Piping with Indirect Water Heater - Boilers ................................................. 42
3.12 HOT AND COLD WATER PIPING – WATER HEATERS .................................................................. 43
3.12.1 Near-Boiler Heating Piping Components – Water Heaters .......................................................................... 43
3.12.2 Safety Relief Valve – Water Heaters ............................................................................................................. 44
3.12.3 Expansion Tank in Closed Water Systems – Water Heaters ......................................................................... 44
3.12.4 Circulator Pump – Water Heaters ................................................................................................................. 44
3.12.5 Sizing the Water System – Water Heaters .................................................................................................... 45
3.12.6 Scalding – Water Heaters ............................................................................................................................. 45
3.12.7 Water Chemistry – Water Heaters ............................................................................................................... 46
3.13 CONDENSATE DISPOSAL ................................................................................................................ 50
3.13.1 Commonwealth of Massachusetts Special Requirement ............................................................................. 51
3.14 ELECTRICAL CONNECTIONS .......................................................................................................... 52