Series AA250
Page 16
LT252 Oct 2019
VENTING & COMBUSTION AIR
General Requirements
ATTENTION
VENTILATION REQUIREMENTS
•
BE SURE THE AIR INLET GRILLS, LOUVERS AND DAMPERS ARE INSPECTED REGULARLY AND
THAT THEY ARE CLEAR AND FREE OF DUST, DIRT, SNOW, ICE, FROST AND OTHER FOREIGN
MATERIAL SO THAT AIR MAY FREELY ENTER INTO THE BUILDING TO PROVIDE ADEQUATE
COMBUSTION AND VENTILATING AIR.
•
FOR PROPER AND SAFE OPERATION OF THE HEATER INSTALLATION, THERE SHALL BE
PROVIDED A COMBINED INFILTRATION AND NATURAL AND MECHANICAL VENTILATION RATE OF
NOT LESS THAN ¼ S.C.F.M. (standard cubic foot per minute) PER BIRD.
•
Refer to the National Fuel Gas Code, ANSI Z223.1 (NFPA 54) in the US and CSA B149.1 Installation Code
in Canada, as well as all local requirements for general venting guidance.
•
The Nation Fuel Gas Code requires a minimum of 4 CFM per 1000 Btu/hr of heater input for ventilation.
FOR YOUR SAFETY
•
Exhaust fans must be operating on an appropriate cycle when heating the building to avoid high
concentration of carbon monoxide and water vapor.
WARNING
•
Carbon Monoxide
is an odorless and poisonous gas. Extended exposure to carbon monoxide may lead to
death. Early signs of carbon monoxide poisoning resemble the flu, including headaches, dizziness and/or
nausea. If you experience these signs, GET FRESH AIR IMMEDIATELY. Have the heaters serviced as
soon as possible and check the ventilation in the house.
