AM Series Water Heaters

The AM Series high efficiency water heaters provide you with a powerful hot water system with a compact footprint and built-in redundancy. The AM Variable Radial Circulation heat exchanger is highly resistant to scale build-up which increases your ROI, expands the lifetime expectancy of your system and promotes uptime reliability. Multiple units can be located with near-zero side clearance for even larger installations. Internal valves are included affording you additional savings on installation costs. AM water heaters are available in six sizes from 199,000 to 1 million BTU/hr (199 and 250 available in AM Rapid Recovery Integrated only).

Each unit consists of between 2 and 4 inpidual modules, each with its own combustion chamber, burner, gas valve, and combustion controls and safeguards, all tied together to common water connections and assembled in a single enclosure. This provides the advantages of high turndown and multiple-unit redundancy, while still keeping installation costs down and operation simple. Full front access means near-zero side clearance with no loss of serviceability when more than one million BTUs are necessary. Installations take up minimal space and remain simple to service. Standard Modbus controls easily connect to Energy Management or Building Automation System.

The high efficiency of the AM series water heaters means less wasted heat and lower operating costs. In a condensing unit, lower fire rates return higher operating efficiencies. By running multiple modules at low fire rather than one large unit at higher fire, the AM series ensures the installation is always running at its most efficient. High efficiencies also mean lower flue temperatures and thus a range of venting options. All units can be vented in polypropylene, PVC, cPVC, or AL-294C vent materials.

Model Input Output*
AM 399 399,000 351,000-395,000
AM 500 500,000 440,000-495,000
AM 750 750,000 660,000-742,500
AM 1000 1,000,000 880,000-990,000

*Output depends on a range of factors including inlet temperature and ΔT. For further information contact your local factory representative.

Features and Benefits

  • High efficiency condensing unit
  • 399,000 – 1,000,000 BTU/hr
  • Efficiencies of up to 98%
  • Superior uptime reliability
  • Natural gas or propane
  • Low NOx & CO emissions
  • Turndown up to 20:1
  • Whisper quiet operation, even at full fire
  • Direct or Conventional Vent with PVC, CPVC, Polypropylene or AL29-4C Materials
  • Small footprint
  • Easy access means maintenance is a snap
  • Daisy-chain multiple units for applications over 1000M BTUs

Options and Accessories

Product Options

Double Block and Bleed Gas Train
Allows real-time cutover from natural gas to propane by rotating the fuel selector switch and changing of logic sticks.


Accessories

AERCO Condensate Neutralizer Kit 
Ideal for neutralizing condensate from condensing boilers and furnaces operating on natural gas or propane.

AERCO Control System (ACS) 
Optional multiple unit controller recommended for installations of eight or more boilers to maximize operating efficiency.

BelimoF6... HDU Series 2-way butterfly valves 
Designed to meet the needs of HVAC and commercial application requiring bubble tight shut-off for liquids. Typical applications include boiler isolation, chiller isolation, cooling tower isolation, change-over systems, air handler coil control, bypass and process control applications.

Communications Gateway 
Optional accessory supports boiler or BMS integration with BACnet, LonWorks and N2 systems.

Integration Panel 
Allows for automatic BST Master-function transfer to the next available unit in the event the original Master experiences a control panel or communication failure.

Secondary Low Water Cut-Off (LWCO) 
Where required by building code. Secondary LWCO must be installed external to boiler.

Sentinel Products 
Compatible with all materials found in a hydronic loop, these chemicals offer overall protection of a heating system from sludge, scale, corrosion, and freeze conditions.

Technical Documents

Installation and Piping Drawings

AM 1000 Units with Individual Tanks (SD-A-1046)

pdf 56.93 KB | January 21, 2016

AM 1000 Units with Individual Tanks (SD-A-1046)

dwg 109.62 KB | July 14, 2016

AM 399 Units with Individual Tanks (SD-A-1045)

pdf 56.22 KB | January 21, 2016

AM 399 Units with Individual Tanks (SD-A-1045)

dwg 139.41 KB | July 14, 2016

AM 399, AM 500 Single WH Installation (SD-A-999)

pdf 179.28 KB | December 14, 2015

AM 399, AM 500 Single WH Installation (SD-A-999)

dwg 1.5 MB | December 14, 2015

AM 399-500 Installation Clearances (AP-A-945)

pdf 33.19 KB | December 14, 2015

AM 399-500 Installation Clearances (AP-A-945)

dwg 487.94 KB | December 14, 2015

AM 399-500 Multi Unit Installation with DWH (SD-A-1001)

pdf 265.48 KB | January 21, 2016

AM 399-500 Multi Unit Installation with DWH (SD-A-1001)

dwg 2.68 MB | May 4, 2016

AM 399-500 Multiple Units Installation Clearances (AP-A-947)

dwg 706.2 KB | May 4, 2016

AM 399-500 Multiple Units Installation Clearances (AP-A-947)

pdf 57.13 KB | May 4, 2016

AM 750 Units with a Common Tank (SD-A-1048)

pdf 60.55 KB | January 21, 2016

AM 750 Units with a Common Tank (SD-A-1048)

dwg 113.4 KB | July 14, 2016

AM 750 Units with Individual Tanks (SD-A-1047)

pdf 66.1 KB | January 21, 2016

AM 750 Units with Individual Tanks (SD-A-1047)

dwg 140.57 KB | July 14, 2016

AM 750-1000 Installation Clearances (AP-A-946)

dwg 689.2 KB | May 4, 2016

AM 750-1000 Installation Clearances (AP-A-946)

pdf 48.86 KB | May 4, 2016

AM 750-1000 Multi Unit Installation with DWH (SD-A-1005)

pdf 266.3 KB | January 21, 2016

AM 750-1000 Multi Unit Installation with DWH (SD-A-1005)

dwg 2.73 MB | May 4, 2016

AM 750-1000 Multiple Units Installation Clearances (AP-A-948)

dwg 825.94 KB | May 4, 2016

AM 750-1000 Multiple Units Installation Clearances (AP-A-948)

pdf 71.34 KB | May 4, 2016

AM 750-1000 Single Installation with DWH (SD-A-1003)

pdf 170.87 KB | December 14, 2015

AM 750-1000 Single Installation with DWH (SD-A-1003)

dwg 1.45 MB | December 14, 2015

Literature and Performance Data

AM Altitude Derate C302.7

pdf 42.36 KB | December 14, 2015

AM Series - Combustion Efficiency

pdf 57.28 KB | December 14, 2015

AM Series Brochure

pdf 7.1 MB | January 20, 2017

AM Series Contractor Kit

pdf 731.92 KB | May 9, 2016

AM Series Tech Data Sheet

pdf 866.62 KB | September 2, 2016

Operation and Maintenance Manuals (O&M)

AM Cascade Manager (OMM-0101, GF-146-CS)

pdf 1.99 MB | December 30, 2016

AM Series Modbus Interface Manual (OMM-0102) (GF-146)

pdf 361.49 KB | December 30, 2016

AM Series User Manual (OMM-0100) (GF-146)

pdf 16.28 MB | December 30, 2016

Product and Component Drawings

AM 399-500 Dimensional Drawing (AP-A-942)

dwg 2.43 MB | June 28, 2016

AM 399-500 Dimensional Drawing (AP-A-942)

pdf 178.93 KB | June 28, 2016

AM 750-1000 Dimensional Drawing (AP-A-943)

dwg 2.93 MB | June 28, 2016

AM 750-1000 Dimensional Drawing (AP-A-943)

pdf 200.51 KB | June 28, 2016

AM Water Heater 399-500 Revit Drawings

rfa 504 KB | September 27, 2016

AM Water Heater 750-1000 Revit Drawings

rfa 552 KB | September 27, 2016

Sizing and Application Guidelines

AM SERIES Electrical Power Guide (GF-146-E)

pdf 1.07 MB | December 14, 2015

AM SERIES Gas Supply Application Guide (GF-146-G)

pdf 308.06 KB | December 14, 2015

AM SERIES Piping Application Guide (GF-146-P)

pdf 3.61 MB | December 14, 2015

AM SERIES Venting Application Guide (GF-146-V) (TAG-0075)

pdf 1.1 MB | January 26, 2017

AM Series Water Heater Primary Loop Design Guide

pdf 123.44 KB | June 23, 2016

Specifications

AM Series Water Heater Specification

doc 111 KB | March 23, 2016

Warranty

Case Studies

Title Market Products
AERCO Allows Shelter Residents to Experience Warm Holiday Season Multifamily Housing AM Series Water Heaters
AERCO Races To Help Hampton Inn Meet Guest Needs Lodging AM Series Water Heaters