Aircommand Sparrow Mk4 Manuale d'uso - Pagina 7
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Sparrow Mk4 Installation Guide V5
2. ASSESS ROOF STRENGTH
The roof members MUST be strong
enough to support the weight of the unit
without any roof deflection that will
cause "pooling" of water around the
unit. Contact your caravan manufacturer
to confirm the max load the roof is able
to handle.
If the roof does not have an existing hole
one must be cut. Cut through the roof
then use the roof hole as a guide to cut
through
the
ceiling.
caravan manufacturer for the best
method to cut through the roof.
The square hole in the roof (360 x
360mm, 14" x 14") MUST be boxed up
with minimum 20mm square timber to
provide a structure strong enough to
withstand the compression of the
installation bolts. This is also to ensure
that air in not drawn from the roof cavity
(Fig 3 & 4). Remember to leave access
for wiring.
Longitudinals MUST be fixed securely to
the transverse roof members to transfer
load (see Fig 3 & 4).
WARNING
There may be electrical wiring located
between the roof and ceiling. Ensure that
power is properly disconnected at the
supply (mains and/or battery). Failure to do
so may result in personal injury or death.
TIP: Always use crawl boards across the roof
to avoid damage
.
3. INSTALLING WEATHER COLLAR
Ensure that the roof is clean, dry and free
from grease or oil & that there are no roof
seams running through the installation area.
IMPORTANT
The weather collar must be assembled to the
roof top the right way up. Check orientation
of the part. Look for the 'THIS SIDE UP
STICKER'.
Apply silicone sealant to underside face
of collar (Fig 5 – left hand picture).
Turn collar over, make sure 'THIS SIDE
UP' sticker is facing up and apply the
collar to the 14" hole.
Push down on collar and remove excess
sealant from around the edges.
Contact
your
Fig 3: Shows an ideal roof structure with strong longitudinals and a 14' hole boxed
20mm MIN
Fig 4: The roof cavity MUST be boxed with timber to provide a solid structure
Fig 5: Left hand picture shows underside of weather collar – apply sealant across this
entire face. Right hand picture shows 'THIS SIDE UP' sticker. Keep this side up when
TH
28
May 2015
THE ROOF CAVITY MUST
BE FRAMED TO SUPPORT
THE UNITS WEIGHT
APPLY SEALANT TO
THIS UNDERSIDE
FACE ONLY
applying to roof.
Page 7 of 16
LONGITUDINALS MUST BE
FIXED SECURELY TO
TRANSVERSE ROOF MEMBERS
BE SURE TO ALLOW SPACE
FOR POWER CABLE