WARNING!! Please verify the opening requirement on your Maxxair Fan.
If it is 400mm x 400mm you need to purchase an adapter from our Euro
Adapter listing https://www.ebay.com/itm/133005668147
Available now, Insulated Vent Fan Cover, https://www.ebay.com/itm/132946231471
Patent Pending adapter matches the contour of the OEM roof so a standard RV
style vent mounts to a flat surface. Prevents distorting the roof sheet
metal or vent flange and can be used as an aid for locating the fan.
They are CNC machined out of UV and fire
resistant expanded PVC. The fan mounts to the outside adapter. Fan
adapters work with the Maxxair Deluxe series and the Fan-tastic Vent
fans.
The
framing strips are expanded PVC and bonded to the roof with a thick
bead of Windoweld. They are more flexible than wood and plenty strong to
support the vent and keep it from jiggling. We double them up when
installing roof top air conditioners. They are essential if the span
between the OEM roof beams is more than 18". They also provide a backing
for the screws that hold up the vent interior bezel. They should be
placed 1/4" away from the edge of the hole so the screws for the vent go
into the strips. They are a generic size and will need to be cut to length. These strips are not contoured to the van corrugations.
Fits a 14" x 14" opening. Photo of the adapter is in the offset position.
The
vent adapter outside dimension is 16 3/4 X 16 3/4. If you are using a
Maxxair vent our adapter fits the deluxe series, other Maxxair vents
have a wider flange. You will need a wider adapter. Please call.
Longer screws than came with the vent fan may be needed.
Roof Vent Adapter Install Tips
We
recommend Sikaflex 221. Locate and cut the 14 x 14 hole. You can use
the adapter as a guide to mark the hole. Stay clear of roof support
beams.
Make a tape line 1/4" beyond the adapter perimeter.
De-gloss
the area with a Scotch-brite pad. No need to scuff, just dull the
paint. Clean with isopropyl alcohol and let dry thoroughly. Blow dryer
if it's wet and/or cold out.
Apply three 1/8" beads of the
Sikaflex on the face of the adapter. Then, press the adapter down onto
the roof until the adhesive oozes out the sides. It's not necessary to
clamp. If you do, use several lightly set clamps and spread out the
clamp force over the whole surface area.
Using the adhesive
that oozes out, make a fillet around the adapter with a double gloved
finger. Pull the tape within 15 minutes. Cure is fast on outside. Let
cure overnight and then proceed with the fan install.
If you
purchased our Interior Framing Strips, using the hole that you cut
locate where the transverse strips need to be placed on the longitudinal
strips. Assemble the interior frame with the 2" screws provided. Once
the frame is assembled it will be glued to the interior side of the roof
using Sikaflex 221. If the strips ordered are not bay specific, then
you may need to cut them to the length of the panel you are installing
it in.
We recommend using butyl tape for the fan install. Cover
the fan flange with 1" wide tape. Place the flange onto the adapter and
press down. Then drill pilot holes through the adapter and into the van
roof. You may need the 4 longer screws provided for the corners. Tighten
all screws very lightly against the fan flange. Some butyl will ooze
out which you can trim off.
Coat the fan flange, adapter and
onto the roof about 1/2" with self-leveling Dicor or brush-on Flexseal.
Some sealants will melt the fan plastic so you might try it on a portion
of the interior bezel first. You will cut a lot of that piece off.
Good idea to check the integrity and reapply the sealant every so often.
**Please
note, if you purchased butyl tape with this order and the butyl tape is
stuck to the plastic, place it in the freezer for 15 or 20 min. It
will release, then let it return to room temperature.
Disclaimer:
Van owner and/or installer assumes all risk associated with
roof top mounted items and/or components. Van owner and/or installer
recognizes and agrees that this product, and each of its component parts, is
sold “as is” and that seller makes no representation or warranty of
merchantability that the product is fit for any particular purpose.