Installation Instructions
Control Panel
(if provided)
WALL ATTACHMENT
SURFACE MOUNTED
RECESSED MOUNTED
FRESH AIR SUPPLY FAN
(See Fig. 5 on page 8)
Control panels are provided with all auto wash type ventilators (Model AW) and are
optional with all baffle filter type (AF) and modular grease extractor type (AX).
Control panels with models (AF) and (AX) do not have the auto wash plumbing assembly
compartments.
Control panel dimensions and connection detail are shown on the enclosed shop drawing.
Panels may be surfaced mounted, partially recessed or fully recessed.
Drill four holes in ventilator plumbing compartment as required. Be careful not to damage
any components. Avoid drilling into electrical compartments. Bolt to wall with anchor
bolts or other acceptable means. Weight of control panel varies from 90 to 200 lbs.
Cut hole in wall 1/2” greater than overall dimensions of the control box (shown on shop
drawing). Spacers or support angles may be necessary to provide proper support. It is
recommended that the panel be bolted to wall similar to method used for surface
mounted above.
PAWS CONTROL PANEL
The Programmable Automatic Wash Sequence (PAWS) panel is designed to control the
operation of the ventilator exhaust and make-up air fans and wash the grease extraction
plenum with hot water/detergent solution. The fan operation and wash sequence can be
started and stopped manually or programmed for automatic operation.
1. Check all local codes prior to installation.
2. Supply fan inlet must be located to minimum 10’-0” from the exhaust fan. If 10’ is
not possible a 3’ vertical separation
may*
be acceptable.
3. Cut and seal supply fan curb to roof.
4. Duct shall be constructed of 22 or 24 gauge steel. Insulated duct material should be
used to eliminate frost and/or condensation.
5. Duct shall be sized to provide air velocities not exceeding 1200 FPM.
6. A volume control damper, provided in the duct just above the supply collar that
contains the UL listed re damper, should be properly set to supply CFM required.
7. If the hood is provided without the supply collar installed, it must be installed per the
instructions provided on the collar.
8. Carefully place the supply fan on roof curb. Face supply fan inlet away from
prevailing winter wind. Electrical back draft damper is recommended in cold
climates.
9. Bolt or screw fan to fan curb.
10. Make all necessary electrical connections and check fan for proper rotation.
NOTE: Fan will supply air running in wrong direction.
*Dependent on local code requirements.
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