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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 select Zephyr Ventilation range hoods without the need for expensive make up air kits.
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levels; AK9228AS & AK9234AS - 290 or 390 CFM, AK9240AS & AK9446AS - 590 or 390 CFM. The usage of ACT
may not be necessary for your installation. Please check your local codes for CFM restrictions.
By default the maximum blower CFM is set to 600 for AK9228AS & AK9234AS and 1200 for AK9240AS & AK9246AS.
To enable ACT
1. Before hood installation, gain access to PC board by following the steps shown in FIG. 8.
2. Change plastic jumper positioning as shown in FIG. 9 to set the desired maximum blower CFM.
3. Re-install PC board & continue with hood installation.
4. Remove the appropriate foil CFM sticker included with the hood literature and place inside the hood body below
the wiring diagram or in another clearly visible location.
NOTE:
After re-positioning the jumper and powering on the hood, the CFM cannot be changed again.
To verify if your installer enabled ACT for AK9228AS & AK9234AS
With hood off, press and hold the power button for three seconds. If the number 6 displays = defualt max. CFM, if
the number 3 displays = max. 390 CFM, and if the number 2 displays = max. 290 CFM.
To verify if your installer enabled ACT for AK9240AS & AK9246AS
With hood off, press and hold the power button for three seconds. If the number 6 displays = defualt max. CFM, if
the number 3 displays = max. 590 CFM, and if the number 2 displays = max. 390 CFM.
When ACT is enabled, the number of blower speeds will be reduced.
AK9228AS & AK9234AS - 390 CFM = max. 3 speeds and 290 CFM = max. 2 speeds.
AK9240AS & AK9246AS - 590 CFM = max. 3 speeds and 390 CFM = max. 2 speeds.
There should also be a foil label located inside the hood body near the wiring diagram that indicates the blower
CFM.
CAUTION:
Hood must be disconnected from main power prior to performing the
conversion instructions listed below. Failure to do so could result in
personal injury or damage to the product.
!
PC Board
1
3
5
7
2
4
6
8
Jumper 5-6 or 7-8
DEFAULT POSITION
Default Max. Blower CFM
Jumper 3-4
Max. Blower CFM
AK9228AS & AK9234AS - 390
Jumper 1-2
Jumper Pins
Plastic
Jumper
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
1
3
5
7
2
4
6
8
Max. Blower CFM
AK9228AS & AK9234AS - 290
AK9240AS & AK9246AS - 590
AK9240AS & AK9246AS - 390
- (If applicable) Remove both spacer panels by 2
screws for each spacer panel.
- Remove baffle filters and residue tray.
- Remove 5 screws attaching light panel.
- PC board located behind the light panel.
FIG. 8
FIG. 9
ACT Conversion
