EFW
Models: EFW-285WBN, EFW-340WBN, EFW-399WBN
Version Date: 2022-06-31
USER INFORMATION MANUAL
WARNING: If the information in this manual is not followed exactly, a fire or explosion
may result causing property damage, personal injury, or loss of life.
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Do not store or use gasoline or other flammable vapors and liquids in the vicinity
of this or any other appliance.
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WHAT TO DO IF YOU SMELL GAS
o Do not try to light any appliance
o Do not touch any electrical switch; do not use any phone in your building.
o Immediately call your gas supplier from a neighbor's phone. Follow the gas
supplier's instructions.
o If you cannot reach your gas supplier, call the fire department.
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Installation and service must be performed by a qualified installer, service agency
or the gas supplier.
User Responsibilities
This appliance must be installed and serviced by a qualified installer or service technician. This appliance must be serviced and
inspected annually when operating in normal residential applications. Other applications (e.g., commercial, or other more
strenuous conditions) may require more frequent service and inspection. As the User of this equipment, you are responsible for
ensuring maintenance is performed at the required intervals. It is also the Users responsibility to ensure Vent and Combustion
Air-inlet terminations are kept clear of obstructions.
Blocked Vent - This unit is provided with an automatic system that will not allow the unit to operate if
the vent is blocked. If you suspect a blocked vent, follow these instructions:
1. Inspect the inlet and outlet venting outside your house and free any obstruction.
2. Contact a qualified service technician for assistance.
Carbon Monoxide Detector - For each floor level containing bedrooms(s), a carbon monoxide detector
and alarm shall be place in the living area outside the bedrooms as well as in the room that houses the
appliance. Detectors and alarms shall comply with NFPA 720 (latest edition). Failure to comply with
requirements for detectors and alarms may result in serious injury, or death.
Service Requirements - Failure to have the appliance properly serviced and inspected on a regular
basis may result in property damage, serious injury or death.
Obstruction Hazards - Failure to keep the Vent and Combustion Air-inlet clear of ice, snow, and other
debris may result in property damage, serious injury, or death.
420011327100
SAVE THESE INSTRUCTIONS: Installing Contractors, leave these
instructions with the customer as it contains important information
regarding annual inspection requirements, maintenance check lists,
and shut down procedures. Affix instructions close or adjacent to the
appliance.
Ariston Thermo USA LLC,
272 Duchaine Blvd. New
Bedford MA 02745
Technical Assistance:
1-800-323-9651
techsupport@aristonthermo.us
www.htproducts.com
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