AERCO AM 199, AM 500, AM 250, AM 750, AM 1000 Quick Installation Manual
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QIG-0001_0A • 11/1/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 1 of 7
Max. TDS
< 200 ppm
Chloride
< 150 ppm
Conductivity
< 3000 μS
pH
7.5-9.5
WARNING!
Follow all provisions, warnings, and cautions provided in the AM boiler/water heater Operations and Maintenance (O&M) manuals. Failure to
comply with the O&M can lead to extensive property damage and/or personal injury or death.
Do not store any flammable materials or liquids in the immediate vicinity of the unit.
Provisions for sufficient combustion air and ventilation of the boiler room are required (see O&M for details).
Liquefied petroleum gas-burning appliances shall not be installed in a pit, basement or similar location where heavier-than-air-gas might
collect.
The unit installation and startup must be carried out by trained and qualified professionals.
MASSACHUSETTS INSTALLATIONS: Installer must be licensed within the Commonwealth of Massachusetts. Unit must be installed according to
all local codes. See O&M manual for more information.
In the event of a breakdown and/or malfunction of the unit, turn it off and do not make any attempt to repair it; service must be performed
by a certified service technician using original spare parts.
Transport, Installation Requirements
CORRECT WAY TO LIFT UNIT:
INSTALLATION CLEARANCES
Accessories Included (inside
unit):
(1) Gas to LP conversion kit
(1) Remote temperature sensor
(2) Spare vent thermal fuses
(1) Neutralizer media
(4) Adjustable foot
(1) Outdoor sensor-boiler models only
(1) Piping kit for circulation pump—
(AMRI models only; shipped loose)
ALCOVE/CLOSET INSTALLATIONS:
Follow rules on clearances, venting, ventilation openings as per the O&M and the National Fuel Gas Code, ANSI
Z223.1/NFPA 54 and/or CAN/CSA B149.1, Natural Gas and Propane Installation Code and local codes. DO NOT use
non-metallic exhaust pipe material into a closet or alcove; the only exhaust pipe material accepted is AL29-4C.
COMBUSTION AIR REQUIREMENTS:
The combustion air must be free of chlorine, halogens or any other chemicals that are detrimental to the operation
of the unit. Sufficient air supply must be provided to support room air combustion - see O&M and Venting
Applications Guide GF-146-V for details.
GAS PRESSURE REQUIREMENTS:
• The inlet supply to the unit must be at least 3” W.C. when firing at maximum input. Maximum allowable gas pressure
is 13”W.C.
• A lock-up style external gas regulator is required when supply pressure is greater than 13” W.C.
• External gas regulator is required for State of Massachusetts, regardless of supply pressure.
• Unit is factory shipped for Natural Gas operation. For Propane operation, see O&M for conversion instructions.
WATER CHEMISTRY:
• Do NOT use artificially softened water
• Consult chemical manufacturer for certification of inhibitor, anti-freeze, etc. used for hydronic systems
• For best results, clean hydronic system before adding inhibitors; isolate boiler from piping during system flushing
Water Chemistry
Allowable Limits:
AM Series Quick Installation Guide
Quick Installation Guide
AM Series
QIG-0001_0A • 11/1/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 2 of 7
Equivalent Pipe Lengths
Diam
Sharp 90°
Sweep 90°
45°
AM 199/250
3”
10 ft.
5 ft.
5 ft.
AM 399/500
4”
10 ft.
5 ft.
5 ft.
AM 750/1000
6”
10 ft.
5 ft.
5 ft.
Exh Outlet
Duravent PolyPro
AM 199/250
3”
3PPS-03PVCM-3PPF
AM 399/500
4”
4PPS-04PVCM-4PPF
AM 750/1000
6”
6PPS-06PVCM-6PPF
Centrotherm Innoflue
(PP)
AM 199/250
3”
ISAAL03
AM 399/500
4”
ISAAL04
AM 750/1000
6”
ISAAL06
Security Chimneys (Al29-
4C)
AM 199/250
3”
SS3PVCU
AM 399/500
4”
SS4PVCU
AM 750/1000
6”
SS6PVCU
Security Chimneys DW
(Al29-4C)
AM 199/250
3”
SS3PVCUK
AM 399/500
4”
SS4PVCUK
AM 750/1000
6”
SS6PVCUK
Venting/Air Intake
ACCEPTABLE MATERIALS
• Acceptable vent materials: Al29-4C Stainless Steel, Polypropylene, CPVC, PVC. For Alcove/Closet Installation, use Al29-4C only.
• Do not use PVC exhaust for applications where return water temperature > 145F. See O&M for additional information.
• Polypropylene and Al29-4C exhaust requires additional adapters - contact the vent manufacturer for suitable adapter.
VENT/AIR INTAKE SIZING:
• Maximum length of vent is 60 equivalent ft.
• Maximum length of air intake is 60 equivalent ft.
• For manifolded vents, see O&M manual
Exhaust Adapter supplied with unit accepts
PVC. When using polypropylene or Al29-4C
exhaust, additional adapter required—
example manufacturers:
VENT TERMINATION
Quick Installation Guide
AM Series
QIG-0001_0A • 11/1/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST Page 3 of 7
POTABLE APPLICATIONS
MINIMUM FLOW
10 grains/gal max
200ppm TDS max
POTABLE APPLICATIONS
MINIMUM FLOW
18 grains/gal max
200ppm TDS max
AM 199
11 gpm
18 gpm
AM 250
12 gpm
18 gpm
AM 399
22 gpm
37 gpm
AM 500
24 gpm
37 gpm
AM 750
36 gpm
60 gpm
AM 1000
48 gpm
75 gpm
WATER PIPING:
Boiler applications:
• Use primary/secondary piping configuration.
• Common pipe diameter must be sized for less than 4.0 ft/sec; common pipe length must
be 3 to 5 times its diameter.
• Single unit application - relocate supply temperature sensor from boiler header to system
piping.
• Multiple unit application - install Cascade header temperature sensor in the system piping
(see AERCO Cascade Sequencer user manual (GF-146-CS) for installation details).
Water heating applications:
• A storage tank must be used. See below for basic
piping configurations.
• An anti-scald valve must be used and installed in
accordance with local codes.
Ensure that the minimum system flow is met
per chart and table below, otherwise the flow
sensors will automatically stop the burner.
AM SERIES PRESSURE DROP
A: AM 199/250; Min flow (high fire) =11 gpm/ 12 gpm
B: AM 399; Min flow (high fire) =22 gpm
C: AM 500; Min flow (high fire) =24 gpm
D: AM 750; Min flow (high fire) =36 gpm
E: AM 1000; Min flow (high fire) =48 gpm
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