INSTALLATION INSTRUCTIONS - ALL MODELS
STEP 1
MAXXFAN requires a roof opening opeining of 355mm
x 355mm for KI models and a roof opening of 400mm x
400mm for KI40 models. If you are replacing another
type already installed, remove the old existing roof vent.
Remove all old roof sealant for a minimum of 50mm
entirely around the roof opening.
Place the MAXXFAN Roof Receiving Flange (reference
photo #2 below) into the roof opening and trace a pencil
line around it to verify the clean seal area that will be
required. Note that the Roof Receiving Flange must be
centered in the roof opening with the metal clips facing
the sides of the vehicle (not facing the front or rear of the
vehicle).
CAUTION: When installing your Roof Flange, only
use a caulking/sealant compatible with the flange
(plastic product) and the roof surface.
use materials containing solvents such as or similar
to Xylene, Toluene, Methyl Ethyl Ketone, Acetate
or Acetone as they can damage the flange. Also,
Polysulfide (Thiokol) type sealants must be avoided.
Silicone Sealants such as G.E. Silicone II (non-
paintable) used for outdoor applications have proven
to be suitable for this installation.
If in doubt, please contact the manufacturer of your
RV for further information.
STEP 2
Apply Sealant or Caulking within the area you have traced
on the roof with a pencil. Apply it carefully to avoid gaps
that may allow water to enter.
Fasten the Roof Receiving Flange to the roof with
screws provided.
Apply additional roof sealant over the screw heads and
around the edge of the roof flange.
CAUTION: Disconnect main vehicle power before
connecting 12 volt DC power to the MAXXFAN!
NOTE: The MAXXFAN must be fully opened prior to
proceeding to STEP 3. Turn knob to fully raise the vent
lid.
NOTE: On the NON-REMOTE controlled models, the
knob must be pulled out to unlock before turning.
OPEN / CLOSE
KNOB
2
STEP 3
Using the insulated electrical connectors provided,
connect the vehicle's 12 volt power to the two MAXXFAN
power wires.
NOTE: The MAXXFAN black wire identified with a tag showing
(+) must be connected to the vehicle 12 volt (+) positive supply.
CAUTION: Connecting the MAXXFAN to a circuit
other than 12 Volts DC or with incorrect polarity could
damage the MAXXFAN, cause injury to persons or
damage to property and void the warranty.
STEP 4
Confirm the 4 metal mounting clips are firmly in place on
the Roof Receiving Flange. With the MAXXFAN open
and the exhaust/intake louvers facing the rear of the
vehicle, lower the MAXXFAN onto the Roof Receiving
Flange.
Make sure the power wires slide to the vehicle interior
and do not become entangled on the Roof Receiving
Flange's upward edge.
DO NOT
4
STEP 5
Verify the MAXXFAN is fully seated down on the Roof
Receiving Flange and fasten the MAXXFAN to the Roof
Receiving Flange using the four 19mm #10 stainless
steel screws provided.
CAUTION: Only use the screws provided/specified
for this installation or internal damage and/or insecure
mounting may result.
5
THIS COMPLETES THE ROOF TOP
PORTION OF THE INSTALLATION
ROOF FLANGE
NOTE: Re-apply 12 volt vehicle power. The MAXXFAN will
emit a beeping sound to indicate power is properly connected.
In addition, the Remote Control model will automatically
close the vent cover. If the MAXXFAN does not beep when
power is connected, go back to step #3. Confirm that proper
connections were made and 12 volt power is on and available.
This MAXXFAN incorporates a self-resetting fuse on the circuit
board located in the ceiling assembly.
removing and re-applying power. If your fan fails to operate or
needs reset, contact your AIRXCEL / MAXXAIR Distributor for
assistance or solicit the aid of an electrical technician.
2
RECEIVING FLANGE
UPPER EDGE
METAL MOUNTING
CLIPS
It can be reset by