Installation guide

Sparrow Mk4 Installation Guide 20
th
Dec 2012 Page 7 of 14
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 from the roof then use
the roof hole as a guide to cut through the
ceiling. Contact your caravan manufacturer
for the best method to cut through the roof.
- The square hole in the roof (356 x 356mm,
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
Fig 3: Shows an ideal roof structure with strong longitudinals and a 14’ hole boxed
Fig 4: The roof cavity MUST be boxed with timber to provide a solid structure
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 the
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
from around the edges.
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
applying to roof
THE ROOF CAVITY MUST
BE FRAMED TO SUPPORT
THE UNITS WEIGHT
20mm MIN
LONGITUDINALS MUST BE
FIXED SECURELY TO
TRANSVERSE ROOF MEMBERS
BE SURE TO ALLOW SPACE
FOR POWER CABLE
APPLY SEALANT TO
THIS UNDERSIDE
FACE ONLY