Exhaust Blower Ratings - GE JP989 Manual Del Propietario E Instrucciones De Instalación

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EXHAUST BLOWER RATINGS

EXHAUST BLOWER SAFETY WARNING
Sufficient air is needed for proper combustion and exhausting of gases through the flue
(chimney) of other fuel burning equipment to prevent back drafting. Follow the heating
equipment manufacturer's guidelines and safety standards such as those published by
the National Fire Protection Association (NFPA), the American Society for Heating,
Refrigeration and Air Conditioning Engineers (ASHRAE) and local code authorities.
NOTE: The exhaust blower output is approximately 400 CFM (cubic feet per minute)
without ductwork. Each installation is different and ductwork affects blower output
accordingly. Actual blower exhaust CFM can be approximated using the graph below.
Step 1: Calculate the "equivalent duct length" using the "DUCTWORK
CALCULATIONS" table in these instructions for your installation.
Step 2: Find the approximate intersection point of the blower exhaust performance
curve with the equivalent duct length to estimate the actual maximum blower
output for your installation.
Examples: 50 equivalent feet of ductwork has approximately 320 CFM.
100 equivalent feet of ductwork has approximately 265 CFM.
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Installation Instructions
Downdraft Cooktop Exhaust Blower CFM
50
6" Diameter Equivalent Duct Length
19
75
100
125
150

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