beautypg.com
AM Series Boilers and Water Heaters
Installation, Operation & Maintenance Manual (IOMM)
Page 4 of 156
AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913
OMM-0100_0B
PRI - 07/14/14
Ph.: 800-526-0288
GF-146
3.14.1 Power Supply Cable Connection – Boilers and Water Heaters ..................................................................... 52
3.14.1.1 Connecting Units in Cascade (Boilers or Water Heaters) ...................................................................... 54
3.14.2 0-10 VDC Input Connections – Boilers & Water Heaters .................................................................................. 56
3.14.3 MODBUS Interface Connections – Boilers and Water Heaters..................................................................... 56
3.14.4 On/Off Control (Enable/Disable) .................................................................................................................. 57
3.14.5 Installing the Outdoor Temperature Sensor - Boilers ................................................................................... 57
3.14.6 Indirect Water Heater Connection - Boilers ................................................................................................. 58
3.14.7 Indirect Water Heater Priority Selection - Boilers ........................................................................................ 58
3.15 ELECTRICAL CONNECTIONS – WATER HEATERS ....................................................................... 59
3.15.1 Storage Tank Connection - Water Heaters ................................................................................................... 59
3.16 VENTING AND COMBUSTION AIR PIPING ...................................................................................... 60
3.16.1 Combustion Air Contamination Prevention .................................................................................................. 60
3.16.2 General Venting and Air Piping Systems ....................................................................................................... 61
3.16.3 Min/Max Allowable Combustion Air and Vent Piping Lengths ..................................................................... 63
3.16.4 General Venting and Combustion Air Piping Installation ............................................................................. 63
3.16.5 Specific Vent and Combustion Air Installations ............................................................................................ 63
3.16.5.1 Sealing of PVC, CPVC or ABS Air Inlet Pipe ............................................................................................ 64
3.16.5.2 PVC/CPVC Vent Piping Materials ........................................................................................................... 64
3.16.5.3 Air Intake and Vent Starter Pieces ......................................................................................................... 65
3.16.5.4 Single Pipe Venting (Unsealed Combustion) ......................................................................................... 66
3.16.5.5 Combustion Air and Ventilation Openings ............................................................................................ 67
3.16.5.6 Two Permanent Openings Method ....................................................................................................... 67
3.16.5.7 One Permanent Opening Method ......................................................................................................... 67
3.16.5.8 Determining Vent Termination Location ............................................................................................... 67
3.16.5.9 Sidewall Termination - Two pipes .......................................................................................................... 69
3.16.5.10 Determining Location of Sidewall Two-pipe Termination ................................................................... 69
3.16.5.11 Installing Vent and Air Piping into Sidewall ......................................................................................... 71
3.16.5.12 Sidewall Termination and Fittings ....................................................................................................... 71
3.16.5.13 Multiple Vent and Air Terminations .................................................................................................... 71
3.16.5.14 Sidewall Termination – Concentric Vent ............................................................................................. 73
3.16.5.15 Sidewall Termination Installation ........................................................................................................ 74
3.16.5.16 Multi-venting Sidewall Terminations ................................................................................................... 75
3.16.5.17 Vertical Termination – Two Pipes ........................................................................................................ 75
3.16.5.18 Determining Location of Vertical Termination .................................................................................... 76
3.16.5.19 Vertical Vent and Air Roof Termination Preparation ........................................................................... 77
3.16.5.20 Installing Vertical Vent and Air Roof Terminations .............................................................................. 77
3.16.5.21 Installing Multiple Vent and Air Vertical Terminations........................................................................ 78
Installing Vertical Multiple Vent and Air Roof Terminations .............................................. 78
3.16.5.22 Vertical Termination – Concentric Vent .............................................................................................. 79
3.16.5.23 Determining Location of Vertical Concentric Vent Termination ......................................................... 79
3.16.5.24 Multi-Venting Vertical Terminations ................................................................................................... 79
3.17 GAS SUPPLY PIPING ........................................................................................................................ 80
3.17.1 Connection of Gas Supply Piping .................................................................................................................. 80
3.17.2 Natural Gas Pipe Sizing ................................................................................................................................. 82
3.17.2.1 Natural Gas Supply Pressure Requirements .......................................................................................... 82
3.17.3 Propane Gas Pipe Sizing ................................................................................................................................ 82
3.17.3.1 Propane Gas Supply Pressure Requirements......................................................................................... 82
3.17.4 Checking and Adjusting the Unit Inlet Gas Supply Pressure ......................................................................... 83
3.17.5 High Altitude Operation ................................................................................................................................ 84
3.17.6 Conversion from Natural gas to Propane Gas .............................................................................................. 84
3.17.6.1 Gas Conversion Kit ................................................................................................................................. 84
3.17.6.2 Gas Conversion Instructions .................................................................................................................. 84
CHAPTER 4:
UNIT START-UP .................................................................................... 89
4.1 INITIAL START-UP REQUIREMENTS ................................................................................................. 89
