Zephyr Essentials Modena Island ZMD-M90AS Use, Care And Installation Manual page 20

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Some local codes limit the maximum amount of CFM a range hood can move. ACT allows you to
control the maximum blower CFM of hoods with Zephyr's DCBL Suppression System without the need
for expensive make up air kits. ACT enables the installer to easily set the maximum blower speed to
necessary for your installation. Please check your local codes for CFM restrictions.
By default the maximum blower CFM is set to 715.
Blower CFM will be displayed on the LCD screen. There should also be a foil label located inside the
hood body near the wiring diagram that indicates the blower CFM.
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