Bradford Ventilation CSR Residential Natural Ventilator Instruction Manual
- June 12, 2024
- Bradford Ventilation
Table of Contents
Residential Natural
Ventilator
Installation Manual
(Wind Master, Supa Vent, Turbo Beam and Turbo Ventura)
Warnings and Important Notices
WARNING:
Do not proceed with the installation until you have read the entire instruction manual, including these warnings.
The product warranty does not cover defects to the ventilators caused by faulty installation or modification without the authorization of Bradford Ventilation.
INSTALL AT YOUR OWN RISK
The installation of this product may be dangerous and includes the potential risk of death, personal injury or property damage. Please be aware of the following before installing this product.
- Follow any State or Territory, Regulator or OH&S guidelines for working at height (e.g. roof work), electrical, working in confined space.
- Installation may require working at height and should only be undertaken with the correct safety equipment.
- Do NOT attempt to install this product if it is not safe to do so.
- It is recommended that appropriate cut resistant gloves and safety glasses be worn whilst handling these products and during installation.
- WARNING: Before commencing the installation always check roofing and other building material for the presence of asbestos prior to cutting. If asbestos is present or the type of material is unable to be determined, do not proceed with the installation and seek expert advice.
Installation – Tiled Roof
STEP 1
Select a suitable position along the roof that has no obstructions below the
tiles (such as a rafter or cross brace).
IMPORTANT: It is recommended that the ventilator be installed along the 3rd or
4th row of tiles from the ridge. Lower positions will return lower vent
performance and increase the risk of leakage in heavy rain.
The installation higher than the third row of tiles down from the ridge may
damage the ridge tile pointing and is NOT recommended.
STEP 2
Position the flashing in the desired location so that the tiles that need to
be cut or removed can be determined. Ensure bottom edge of the flashing passes
the lower tile edge which will be folded later to form a seal.
Mark-out the position to either remove and/or cut the required tiles.
Depending on roof
construction, a tile batten may be obstructing the throat opening of the vent.
This batten can be left in place with the ventilator sitting above it.
STEP 3
Cut the tiles marked earlier using a grinder being careful not to crack the
tile.
STEP 4
If the roof is sarked, cut sarking in a cross and foldback onto itself to give
an opening to match the vent’s throat diameter.
Tape the corners to the surrounding sarking with foil tape to prevent them
fouling the ventilator.
Folding the cut sarking flaps
back on themselves results in a gutter arrangement that helps to prevent any
water running down the sarking from entering through the opening.
STEP 5
Lift the higher row of tiles and using a piece of timber or similar to wedge
to the tiles in the up position.
Return the flashing to the roof and place as per the initial markings made in
step 2.
Take care to avoid
unnecessary movement of the top row of tiles. Excessive movement of these
tiles may damage the ridge tile pointing.
STEP 6
Using a soft hammer, form the flashing to conform with the tile profile.
Position the Var pitch temporarily onto flashing and make any final
adjustments. Turn the bottom edge of the flashing over the lower tiles. Form
the bottom edge of the flashing so that the higher tiles can be replaced with
minimal gaps. Remove the varipitch for next steps.
For additional weather proofing, turn the top edge of the flashing upwards so
that it seals against the tile above.
STEP 7
Lift or remove the formed flashing.
Using a weather resistant roofing silicone sealant, apply a 15-20mm wide bead
of sealant around the perimeter of the flashing area.
Return the flashing to the tiles ensuring no gaps greater than 3mm are
present. Seal any gaps along the front or side with additional
sealant.
Ensure sufficient sealant
applied in tile troughs. This helps prevent any water entering from adjacent
tiles.
STEP 8
Return the higher row of tiles to the flashing.
These should have been cut to provide a snug fit which still allows the throat
of the ventilator to fit onto the flashing.
Adjust the flashing to get a good fit.
STEP 9
Seal the flashing to the higher row of tiles with roof silicone sealant.
Turn the bottom edge of the flashing over the lower tiles.
STEP 10
Using a pair of pliers, fold one end of the fixing strap to match flashing up
stand hob. Position over flashing and hold down whilst folding excess length
of strap towards the lower row tile batten. Screw fix the strap to batten –
refer to step 14.
STEP 11
Position the varipitch over the flashing upstand.
Using a spirit level for guidance, rotate the two varipitch halves until the
top of the varipitch is horizontal in all directions.
Varipitch adjustments are best made off the flashing and then returned to
check the position.
Ensure the varipitch is the correct way up by keeping the notched edge to the
top.
Ensure the top of the
varipitch is horizontal relative to both the lateral axis across the roof and
the longitudinal axis in-line with the roof pitch.
STEP 12
Check the varipitch level again and ensure it is still level across all
directions.
Screw the varipitch to the flashing with the three screws provided at the pre-
drilled holes on the varipitch.
Lock the varipitch by screwing the fixing clip in to the lower half with one
of the screws provided.
Apply sealant internally to the varipitch seam.
Do not seal the varipitch to the flashing.
STEP 13
Position the ventilator top onto the top of the varipitch. The three mounting
points on the lower ring must align with the three notches on the varipitch.
Fix the ventilator top to the varipitch with the three screws provided through
the pre-drilled holes.
Ensure the mounting points
are properly secured on the top and bottom ring of the varipitch.
STEP 14
From within the roof space, take the fixing strapand bend it until it is in a
position to be securely fixed to the lower tile batten. Screw (not supplied)
the fixing strap to the batten, this will prevent the lower part of the
flashing lifting in heavy winds.
Turning the top edge of the
flashing upwards allows it to act as a gutter to prevent any wind driven water
from entering the roof space.
Installation – Metal Roof
STEP 1
Select a suitable position for the ventilator.
Slip the top edge of the flashing under the ridge cap and mark position. The
vents must be installed to the ridge cap. Any other installation requires a
licensed plumber.
Ensure that the flashing covers the roof corrugations or ribs
equally and that it is located between roof rafters.
STEP 2
Remove the flashing and cut a square or round opening around the centre of the
position marks.
Turn up the corrugations or pans on both the low and high sides. This will
help to prevent water ingress.
STEP 3
Return the flashing to the roof, positioning it over the cutout. Ensure that
the top of the flashing is slipped under the ridge capping. For lower pitched
roofs, turn up the top edge of the flashing before slipping under ridge
capping. This will help prevent water ingress.
STEP 4
Using a soft rubber hammer, carefully work around the sides and lower edge of
the flashing to form it into the corrugations of the metal sheeting profile.
STEP 5
Lift the formed flashingoff the roof sheeting.
Apply a bead of weather resistant roofing siliconesealant to the roof
approximately 20mm in from the edge of the flashing.
STEP 6
Return the flashing to the roof. Slide it under the ridge capping and press it
down onto the roof silicone sealant.
STEP 7
Secure the flashing to the metal sheeting with 10G Tek screws or sealed rivets
along the 3 exposed edges of the flashing. Approximately 12 required (not
supplied). Ensure the flashing top edge is fixed via existing ridge capping
screws. This prevents gaps forming
due to thermal expansion and prevents ingress of rain or embers during a
bushfire event.
STEP 8
Using a spirit level for guidance, rotate the two varipitch halves until the
top of the varipitch is horizontal. Varipitch adjustments are best made off
the flashing and then returned to check the position. Ensure the varipitch is
the correct way up by keeping the notched edge to the top.
Take care to
ensure the varipitch is level in all directions.
STEP 9
Check the varipitch level again and ensure it is still level across all
directions. Screw the varipitch to the flashing with the three screws provided
at the pre-drilled holes on the varipitch. Lock the varipitch by screwing the
fixing clip into the lower half with one of the screws provided.
Apply
sealant internally to the varipitch seam.
Do not seal the varipitch to the flashing.
STEP 10
Position the ventilator top onto the top of the varipitch. The three mounting
points on the lower ring align with the three notches on the varipitch.
STEP 11
Fix the ventilator top to the varipitch with the three screws provided through
the pre-drilled holes.
Documents / Resources
|
Bradford Ventilation CSR Residential Natural
Ventilator
[pdf] Instruction Manual
CSR Residential Natural Ventilator, CSR, Residential Natural Ventilator,
Natural Ventilator
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