MAKE UP AIR TECHNOLOGY
This operation must be performed by a qualified technician or installer.
Note to Installers and Inspectors: This product comes equipped with a simple installation feature that limits
maximum CFM levels in order to comply with certain local codes or regulations. This installation method may not
be necessary for all installations, please refer to your local codes for further guidelines.
This makeup air feature applies to single motor models only.
CAUTION
Hood must be disconnected from main power prior performing the conversion instructions
listed below. Failure to do so could result in personal injury or damage to the product.
To modify unit (if needed for local codes):
390CFM
By design, the maximum blower speed is greater than
400 CFM. For local codes requiring reduced CFM,
modify the wiring as described below:
1. Remove the baffle filters.
2. Disconnect all the harnesses from the top of control
box located on right side of motor.
3. Loosen the screws on top of control box and slide
out to remove it from the hood.
4. Uninstall the control box cover.
5. For a maximum of 390 CFM Unit can operate with 4
speeds (Low, Medium, High, Boost).
i. Disconnect connectors of the BROWN wire.
ii. Remove the cap attached to the connector of the
RED wire.
iii. Connect the mating connector of the BROWN
wire and the RED wire.
iv. Attach the cap to the open BROWN wire
connector.
6. Reinstall control box cover and secure control box
to the bracket in the hood using the two screws.
7. Connect all harnesses on top of the control box.
8. Reinstall filters.
Note to Inspectors: To verify this product installation,
check motor wiring connections as described above.
24
Installation Instructions
Motor Harness Connector
Red
Brown
Blue
Brown
Red
Motor Harness
Factory Installed
Max 390 CFM Boost
Wiring Setup
Red
Brown
Blue
Brown
Red
Motor Harness
Wiring Setup
49-2000707 Rev. 5