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Aerco Manuals
Water Heater
AM-R Series
Installation and maintenance instructions manual
Aerco AM-R Series Installation And Maintenance Instructions Manual
Gas-fired condensing water heater
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Contents
Table of Contents
Bookmarks
Table of Contents
Safety Instructions
Table of Contents
1 Code Requirements
Regulations and Guidelines
Commonwealth of Massachusetts
2 General Information
Key to Symbols Used
Manufactured by
Description of Models
Accessories Included
3 Main Components
4 Function Overview
Intended Use and Functions
5 INSTALLATION - Location
Choosing the Installation Location
Prevent Combustion Air Contamination
Location of Water Heater
Residential Garage Installation
Closet and Alcove Installations
Clearances for Installation and Servicing
Clearances from Combustible Material
Vent and Combustion Air Piping
Prevent Combustion Air Contamination
6 INSTALLATION - Mounting the Heater
Transporting the Heater
Mounting the Heater
Dimensions
7 INSTALLATION - Water Side Head Loss of the Heater
8 INSTALLATION - Water Connections
Hot and Cold Water Piping
Near Water Heater Piping Components
Temperature and Pressure Relief Valve
Expansion Tank
Circulator Pump
Sizing Water System
Anti-Legionella
Low Water Cutoff Device
Water Heaters Water Connections
How to Install the Circulator Pump
Scalding
9 INSTALLATION - Condensate Disposal
Condensate Disposal
10 INSTALLATION - Electrical Connections
Electrical Connections: Overview
Connecting the Power Supply Cable
Connection to a LWCO Device
Alarm Contact
Connecting the Heater in Cascade
11 INSTALLATION - Removing of an Heater from a Common Venting System
Removing of an Heater from a Common Venting System
12 INSTALLATION - CATEGORY IV: Vent and Combustion Air
CATEGORY IV: Positive Pressure Condensing
CATEGORY IV: Venting and Air Piping Systems
Minimum / Maximum Allowable Combustion Air and Vent Piping Lengths
Install Vent and Combustion Air Piping
Air Inlet Pipe Materials
Sealing of PVC, CPVC or ABS Air Inlet Pipe
PVC/CPVC Vent Piping Materials
Installing PVC/CPVC Vent and Air Piping
PVC/CPVC Air Intake Connection
PVC/CPVC Vent Connection
Stainless Steel Vent Piping Materials
Stainless Steel Air Intake Connection
Stainless Steel Vent Connection
Polypropylene Vent Piping Materials
Polypropylene Air Intake Connection
Polypropylene Vent Connection
Single Pipe Vent (Not Sealed Combustion)
Determine Location
Sidewall Termination - Two Pipes
Vent/Air Termination
Determine Location
Prepare Wall Penetrations
Termination and Fittings
Multiple Vent/Air Terminations
Sidewall Termination - Concentric Vent
Description and Usage
Sidewall Termination Installation
Termination Clearances
Multiventing Sidewall Terminations
Vertical Termination - Two Pipes
Determine Location
Prepare Roof Penetrations
Termination and Fittings
Multiple Vent/Air Terminations
Vertical Termination - Concentric Vent
Description and Usage
Determine Location
Vertical Termination Installation
Multiventing Vertical Terminations
13 INSTALLATION - CATEGORY II: Vent and Combustion Air
CATEGORY II: Negative Pressure Condensing
CATEGORY II: Adapter and Increaser
Condensing Vent Option: CATEGORY II
14 INSTALLATION - Gas Supply
Gas Supply Piping
Pipe Sizing for Natural Gas
Propane Gas
Check Inlet Gas Supply Pressure
Operating at High Altitudes
Convert a Heater Model 199 or 250 from Natural Gas to Propane Gas or Viceversa
Gas Valve
Convert a Heater Model 399 or 500 from Natural Gas to Propane Gas or Viceversa
15 Start-Up
Operating
User Instructions
Filling the Condensate and Neutralizing Box
General Warnings Concerning Gas Supply
Confirming the Heater's Gas Type
Gas Type Conversion
Start-Up
Ignition Control Testing
Natural Gas
Gas Supply Pressure Checking
Checking and Adjusting CO2 Levels
Checking CO2 Level on Units Model 199 and 250
Checking CO2 Level on Units Model 399 and 500
Check the Capacity Input
Minimum Water Flow
16 Use
Check Water Pressure
Overview
Displays
Start-Up Procedure
Supply Water Temperature Adjustment
Water Temperature
Delays, Alarms and Protective Actions
Circulator Pump Protection
Heater's Freeze Protection
Display in Energy Saver Mode
Users' Menu
Installer's Menu
Diagnostic
Diagnostic: Lockouts "Loc
Diagnostic: Blocking Errors "Err
Flue Blocked Pressure Switch
Shuts Heater down
How to Clean the Appliance Jacket
17 Maintenance
Care and Maintenance
Address Reported Problems
Check All Piping for Gas Leaks
Verify Flue and Air Lines in Good Condition and Sealed Tight
Check System Water Pressure/System Piping/Expansion Tank
Check Control Settings
Check Ignition and Flame Sense Electrodes
Check Wiring and Connections
Perform Performance Verification
Flame Inspection
Check Flame Signal
Check Relief Valve
Check Heater Area
Check Pressure Gauge
Check Vent Piping
Check Air Piping
Check Condensate Drain System
Check Heater Piping (Gas and Water)
Shut Heater down
Test Low Water Cutoff (if Installed)
Reset Button (Low Water Cutoff)
Check Electronic Anode
Removing the Casing
Cleaning the Burner and Primary Heat Exchanger, Flue Gas Side
Thermal Insulations
Correct Positioning of the Ignition and Flame Detection Electrodes
Clean the Air Filter
Condensate Trap and Neutralizing Box Maintenance and Cleaning
Connection of the Display to Other Burners
How to Move a Control Board
Draining the Water from the Heater
Water and Flue Temperature Sensor
199 And 250 Models Wiring Diagram
399 And 500 Models Wiring Diagram
18 Technical Data
19 Spare Parts
20 Read out Flow Chart
21 Factory Menu
22 SEQUENCE of OPERATION for WATER HEATER
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AERCO INTERNATIONAL, Inc., 100 Oritani Dr., Blauvelt, NY 10913 USA
Installation and maintenance instructions
gas-fired condensing water heater series
INSTALLER, THESE INSTRUCTIONS TO BE AFFIXED ADJACENT TO THE HEATER
Instruction
AM - R
62403631 R03
No.
WARNING!!! This manual must only be
used by a qualified heating installer /
service technician. Read all instruc-
tions, including this manual, before
installing. Perform steps in the order
given. Failure to comply could result
in severe personal injury, death, or
substantial property damage.
Save this manual for future reference.
A
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This manual is also suitable for:
250
199
399
500
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