Maxxair MAXXFAN DOME 3810 User manual

MAXXFAN DOME
INSTALLATION INSTRUCTIONS,
INFORMATION AND OPERATING GUIDE
FOR MODELS 3810, 3812
READ AND SAVE THESE INSTRUCTIONS
NOTE: Refer to Installation Instructions, Information and Operation Guides regarding the
model you have purchased.
The MAXXFAN Dome fan is an exhaust fan only.
The MAXXFAN Dome fan installs into a 6 1/4 inch diameter opening.
To determine if your opening is correctly sized, simply remove the interior garnish trim ring
of your existing vent and measure the opening or verify the opening is large enough by
sliding the MAXXFAN Dome sleeve into the opening.
The MAXXFAN Dome is designed for a minimum roof thickness or wall thickness of 1 inch
to a maximum of 6 inches.
The MAXXFAN Dome fan requires a minimum 12 Volt DC, 2 amp service. Confirm that the
circuit you intend to use will accommodate the additional load. Circuit must be fused and
use appropriate gauge stranded wire for electrical connections.
WARNING! TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY
TO PERSONS, OBSERVE THE FOLLOWING:
a) Use this unit in the manner intended by AIRXCEL, INC. If you have questions,
contact the manufacturer.
b) Before servicing or cleaning unit, switch power off at service panel and lock the
service disconnecting means to prevent power from being switched on
accidentally. When the service disconnecting means cannot be locked, securely
fasten a prominent warning device, such as a tag, to the service panel.
CAUTION! FOR GENERAL VENTILATION USE ONLY. DO NOT USE TO
EXHAUST HAZARDOUS OR EXPLOSIVE MATERIALS AND VAPORS.
WARNING! TO REDUCE THE RISK OF FIRE, ELECTRIC SHOCK, OR INJURY TO
PERSONS, OBSERVE THE FOLLOWING:
Installation work and electrical wiring must be done by qualified persons(s) in
accordance with all applicable codes and standards, including fire-rated construction.
P/N: 11-90056 09-24-2019

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INSTALLATION INSTRUCTIONS
STEP 1
The MAXXFAN Dome fan requires a minimum
6 1/4 inch diameter opening. If you are replacing
another type already installed, remove the old
existing vent. Remove all old sealant for a
minimum of 2” entirely around the opening.
STEP 2
Prior to installing the MAXXFAN Dome in the
opening, apply a continuous strip of BUTYL tape
or equivalent to the underside of the flange in
the groove provided.
CAUTION! When installing your MAXXFAN
Dome fan, only use a caulking/sealant
compatible with the flange (plastic product)
and the roof surface. DO NOT use materials
containing solvents such as or similar to
Xylene, Toluene, Methyl Ethyl Ketone (MEK),
Acetate or Acetone as they can damage the
flange. Also, Polysulfide (Thiokol) type
sealants must be avoided.
If in doubt, please contact the manufacturer
of your RV.
STEP 3 (Roof Installation)
When inserting the MAXXFAN Dome fan into
the roof opening:
•orient the fan with the button toward the
front of the coach.
•ensure that the fan wires are hanging to the
inside of the coach.
Center the fan in the opening.
Using the eight (8) screws provided, attach the
flange to the roof at each dimple location along
the flange.
Note: Opening the fan lid gives better access to
the flange for assembling the screws.
Screw into the dimple to pierce the flange,
making sure not to overtighten the screws to
avoid cracking the flange.
STEP 4 (Roof Installation)
After the MAXXFAN Dome fan has been
installed, remove the excess BUTYL caulk that
may have squeezed out. Using a sealer such as
Dicor self-leveling lap sealant or similar caulking,
apply a daub over every exposed screw head. In
addition, apply a bead (approximately 3/16” dia.)
along the outside edge of the flange all the way
around the fan.
Note: The Rain Shield can be installed on the
roof. If there is a downward slope, it must be
installed with the slots toward the downward
slope.
THIS COMPLETES THE ROOF TOP PORTION OF THE INSTALLATION

STEP 3 (Wall Installation)
When inserting the MAXXFAN Dome fan into
the wall opening:
•ensure that the fan wires are hanging to the
inside of the coach.
Center the fan in the opening.
Using the eight (8) screws provided, attach the
flange to the wall at each dimple location along
the flange.
Note: Opening the fan lid gives better access to
the flange for assembling the screws.
Screw into the dimple to pierce the flange,
making sure not to overtighten the screws to
avoid cracking the flange.
STEP 4 (Wall Installation)
After the MAXXFAN Dome fan has been
installed, remove the excess BUTYL caulk that
may have squeezed out. Use silicone to apply a
daub over every exposed screw head. In
addition, apply a bead of silicone (approximately
3/16” dia.) along the outside edge of the flange
all the way around the fan.
STEP 4A
Center the Rain Shield over the fan with the
slots facing downward as shown. Using six (6)
screws provided, attach the rain shield to the
wall at each dimple location along the flange.
After the Rain Shield has been installed, use
silicone to apply a bead of silicone
(approximately 3/16” dia.) to seal around the
perimeter of the rain shield. Apply a daub of
silicone over every exposed screw head.
THIS COMPLETES THE OUTSIDE PORTION OF THE INSTALLATION

CAUTION!
Disconnect main vehicle power before connecting 12 volt DC power to the MAXXFAN Dome exhaust
fan.
STEP 5
•If the roof/wall is thicker than 1 inch the extension
sleeve must be used.
•A roof/wall that is 6 inches thick will use the full-length
extension sleeve without trimming.
•If the roof/wall is between 1 inch and 6 inches, the
extension sleeve may need to be trimmed.
•Measure the distance from the vehicle ceiling/wall to
the base of the MAXXFAN Dome fan. Cut the
extension sleeve longer than the dimension measured
to accommodate the depth of the garnish ring. Refer
to table below for additional length required.
NOTE: Mark and cut the extension sleeve per figure 5
shown above.
VEHICLE
ROOF/WALL
THICKNESS
LENGTH TO ADD TO
CEILING/WALL THICKNESS
MEASUREMENT
LED
NON-LED
1 1/8 to 5 7/8 inch
15/16 inch
1/2 inch
STEP 6 Non-LED MAXXFAN Dome
Using the supplied wire splices, connect the Positive (+)
12VDC supply wire to the MAXXFAN Dome fan wire
marked “POS 12VDC” and the Negative (-) 12VDC
supply wire to the MAXXFAN Dome fan wire marked
“Neg. 12VDC”.
•If the sleeve is needed, insert the sleeve into the
garnish ring positioning the notch in the sleeve to
line up with the wiring.
•Raise the garnish ring to the ceiling/wall ensuring
that the garnish ring is centered over the fan
opening.
•If using the sleeve, the sleeve will overlap the base
that extends in the opening. This will help center
the garnish ring in the opening.
VEHICLE
ROOF/WALL
THICKNESS
SLEEVE LENGTH TO CUTOFF
LED
NON-LED
6.0
NONE (use full
length sleeve)
NONE (use full
length sleeve)
1.0 inch
Not Applicable,
Sleeve not
used
Not Applicable,
Sleeve not
used

•Ensure that the wires are not pinched. The wires
should be routed on the outside of the sleeve. The
excess wire should lay in the garnish ring to keep
them contained.
•Secure the garnish ring to the ceiling/wall with the
four (4) screws provided in the small parts package.
•Reconnect the main vehicle power to the
MAXXFAN Dome.
This completes the installation of the
MAXXFAN Dome exhaust fan.
STEP 7 LED MAXXFAN Dome
Using the supplied wire nuts, connect the Positive (+) 12VDC supply wire to the MAXXFAN Dome
fan wire and the LED light wire marked “POS 12VDC” and the Negative (-) 12VDC supply wire to
the MAXXFAN Dome fan wire and the LED light wire marked “Neg. 12VDC”.
•If the sleeve is needed, insert the sleeve into the garnish ring positioning the notch in the
sleeve to line up the wiring.
•Raise the garnish ring to the ceiling/wall ensuring that the garnish ring is centered over the fan
opening.
•If using the sleeve, the sleeve will overlap the base that extends in the opening. This will help
center the garnish ring in the opening.
•Ensure that the wires are not pinched. The wires should be routed on the outside of the
sleeve. The excess wire and wire nuts should lay in the garnish ring to keep them contained.
•Secure the garnish ring to the ceiling/wall with the four (4) screws provided in the small parts
package.
•Reconnect the main vehicle power to the MAXXFAN Dome.
This completes the installation of the MAXXFAN Dome fan.

OPERATION OF YOUR MAXXFAN Dome fan
•To open the MAXXFAN Dome lid push the button on the handle to dis-engage the clip and
slide the handle away from you until the clip engages the upper opening.
•To close the lid, push the button on the handle to dis-engage the clip and pull the handle
toward you until the clip engages the lower opening.
•Operation of your MAXXFAN Dome simply entails pushing the ON/OFF button on the fan to
activate the exhaust fan.
•The optional LED lighting on the garnish ring is operated by the push button on the garnish
ring. The LED lighting and fan operate independently
•Close the lid to impede infiltration of air when exhaust fan is not in use.
•The MAXXFAN Dome fan should not be operated with the lid closed.
USER INSTRUCTIONS SERVICING
Cleaning of your MAXXFAN Dome may be achieved with mild soap and water only. The screen
can be removed for cleaning by removing the four (4) screws.
Before removing the screen for cleaning, ensure the fan is turned to the OFF position.
CAUTION: Do not operate the fan with the screen removed.
The MAXXFAN Dome fan has a 5 amp fuse. To access the fuse, turn the fuse cap to the left to
remove the cap. Replace the fuse with a 5 amp, type GMA fast acting fuse. Replace the fuse cap to
secure the fuse in the fuse holder.
Should you have questions, please contact AIRXCEL / MAXXAIR VENTILATION SOLUTIONS
Customer Service at 316.832.4357.
For WARRANTY information, please visit www.airxcel.com/maxxair.

PLACE CONSUMER LABEL HERE
For additional product information please visit www.AIRXCEL.com
AIRCEL, INC. –RV Products Division / MAXXAIR
3050 N. St. Francis St. ●Wichita, KS 67219 ●316.832.3400