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31-2000734 Rev. 0 15
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 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.
Installation
8
INSTALL DUCT COVERS
• Refer to section “Duct Cover Requirements” on
page 6 for duct cover accessory part numbers.
• Follow instructions included with the duct cover
accessory to install duct covers.
9
INSTALL GREASE TRAYS AND
FILTERS
• Remove protective film.
• Place grease drip trays into slots.
• Install the baffle
filters.
• Refer to
the Use &
Care manual
for further
instructions to
install grease
drip trays and
baffle filters.
1
2
Motor Harness Connector
Blue
Red
Red
Motor Harness
Brown
Brown
Blue
Red
Red
Motor Harness
Brown
Brown
Factory Installed
Wiring Setup
Max 390 CFM Boost
Wiring Setup
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