Watts AERCO AM Series Quick Installation Manual

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:
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)
Water Chemistry
Allowable Limits:
Max. TDS < 200 ppm
Chloride < 150 ppm
Conductivity < 3000 μS
pH 7.5-9.5
QIG-0001_0A •
AM Series Quick Installation Guide
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
• See O&M manual for additional information
11/1/2019 Technical Support • (800) 526-0288 • Mon-Fri, 8 am - 5 pm EST
WARNING!
INSTALLATION CLEARANCES
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