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Am series boilers and water heaters – AERCO AM Series Boiler User Manual User Manual

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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