Aerco AM 500B - User Manual

AM Series Boilers and Water Heaters
OMM-0100_0D AERCO International, Inc. • 100 Oritani Dr. • Blauvelt, NY 10913 Page 1 of 154
GF-146 Ph.: 800-526-0288 03/28/16
USER MANUAL
AM Series
Natural Gas & Propane Modulating Condensing Boilers & Water Heaters
Applies to the following AM Series models:
Latest Update: 03/28/16
AM Boilers
• AM 399B
• AM 500B
• AM 750B
• AM 1000B
AM Water Heaters
Standard Models:
• AM 399W
• AM 500W
• AM 750W
• AM 1000W
Rapid Recovery
Option:
• AM 399RS
• AM 500RS
• AM 750RS
•
AM 1000RS

Summary

USER MANUAL AM Series

AM Series Boilers and Water Heaters

Overview of the AERCO AM Series condensing boilers and water heaters.

CHAPTER 1: GENERAL INFORMATION

1.1 Warnings & Cautions

Essential warnings and cautions for installation and operation.

1.2 Emergency Shutdown

CHAPTER 2: FUNCTIONAL OVERVIEW

CHAPTER 3: INSTALLATION - SITE

3.1 Choosing the Installation Location

Considerations for selecting the proper installation site.

3.5 Clearances for Installation and Servicing

3.7 Vent and Combustion Air Piping

Guidelines for installing the venting and combustion air systems.

3.11 AMR Buffer Tank Installation

3.17 AM Series Supply and Return Piping Dimensions

CHAPTER 4: INSTALLATION - PIPING

4.2 Water Quality

4.8 Safety Relief Valve

Information and installation of the safety relief valve.

4.9 Low Water Cutoff (LWCO)

4.10 Expansion Tank and Makeup Water

4.12 Domestic Hot Water System Piping with Direct Water Heater - Water Heaters

4.13 Scalding - Water Heaters

4.14 Condensate Disposal

CHAPTER 5: INSTALLATION - ELECTRICAL

5.1 Electrical Connections - Boilers and Water Heaters

General electrical connections for boilers and water heaters.

CHAPTER 6: INSTALLATION - VENTING AND COMBUSTION AIR PIPING

6.1 Combustion Air Contamination Prevention

Preventing contamination of combustion air for safe operation.

6.2 General Venting and Air Piping Systems

6.5.6 Determining Vent Termination Location

6.5.17 Determining Location of Vertical Termination

CHAPTER 7: INSTALLATION - NATURAL GAS

7.1 Gas Supply Piping

Guidelines for natural gas supply piping.

7.2 Connection of Gas Supply Piping

7.7 Checking and Adjusting the Unit Inlet Gas Supply Pressure

CHAPTER 8: UNIT START-UP

8.1 INITIAL START-UP REQUIREMENTS

Essential requirements before starting the heater.

8.4 Boiler Startup Procedure

Step-by-step procedure for starting AM Series boilers.

8.5 Water Heater Startup Procedure

Step-by-step procedure for starting AM Series water heaters.

8.7 Combustion Calibration

Procedure for calibrating combustion for optimal performance.

8.6 Gas Supply Pressure Test

8.10 Heating System Pressure Test

CHAPTER 9: OPERATION

9.2 Freeze Protection

9.5 Startup Procedure - Boilers

9.14 Adjusting the Storage Tank Temperature (Water Heaters)

9.16 Installer Menu

9.17 Factory Menu

9.18 Diagnostics - Display Messages

9.19 Diagnostics - Lockout (Loc) Errors

Troubleshooting lockout errors and their solutions.

9.20 Diagnostics - Blocking (Err) Errors

9.21 Blocked Flue Pressure Switch

9.22 Unit Shut-Down

CHAPTER 10: MAINTENANCE

10.1 Checking for Gas Leaks

10.2 Flue and Air inlet Piping Inspection

10.9 Relief Valve Inspection

10.12 Condensate Drain System Inspection

10.15 Cleaning the Burner and Primary Heat Exchanger (Flue;Gas Side)

10.16 Inspecting and Replacing the Heat Exchanger Thermal Insulation

10.17 Inspecting and Replacing the Burner Thermal Insulation

10.18 Checking for Gas Leaks after Reassembly

10.19 Ignition and Flame Detection Sensor Electrode Positioning

10.21 Condensate Trap and Neutralizing Reservoir Maintenance

10.22 Control Board Replacement

10.26 AM Rapid Recovery (AMR) Option Maintenance

10.27.1 Wiring Diagram

CHAPTER 11: TECHNICAL DATA

CHAPTER 12: SPARE PARTS DRAWINGS & LISTS

12.6 AM Rapid Recovery (AMR) Option Spare Parts List

APPENDIX A: CONTROL PANEL OPERATION CHART

Aerco AM 500B Specifications

General

Brand	Aerco
Model	AM 500B
Category	Boiler
Language	English