GLAZING VISION Pitchvent User manual

202-INST-US-001 v1.0 –11 Dec 2020
www.glazingvision.com
833-SKYDOOR (833-759-3667)
[e-mail]
Pitchvent

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Contents
Section Description
Page
Introduction
3
Safety Information
4
Pre-Installation Preparation
6
Preparation of the Roof
8
Installation Procedure
11
Chain Actuated Pitchvent Setup
21
Manual Crank Pitchvent Setup
22
Interior Finishing
25

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Introduction
Thank you for purchasing a Glazing Vision Pitchvent. In order to ensure that it gives you many years of service it is important that before
commencing any work you read these instructions fully and ensure that they are strictly followed for a successful and trouble free
installation.
We recommend that the installation should be undertaken by your roofing contractor, Glazing Vision recommends a licensed/registered
contractor in good standing. This will ensure a reliable product and enable the property owner to benefit from a 5 year warranty on the
product. It should be noted that an installation by non-approved installers will result in a reduced warranty period of just 2 years.
By following the correct installation procedure, a reliable and high performing end result is guaranteed. The critical operations that can
lead to problems if not done correctly are the lifting, preparation of the supporting structure, and ensuring that the product is mounted
on the correct pitch with the hinge on the high side. Taking the time to carry out these operations correctly will ensure that the product
does not twist or distort and allow the installed product to move freely and unimpeded with minimum load on the chain actuators and
no undue stresses in the frame or glass.
Care should be taken when working on the product, avoiding accidental damage and ensuring operational reliability.
Should you have any queries beyond this manual please do not hesitate to contact Glazing Vision.

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Safety Information
Installation of your roof window may involve working at heights, working at an unusual angle, being in unfamiliar locations or all of these.
Before work is commenced, stop and consider the best way to carry out the task and what hazards you might encounter.
These products can be very heavy. Extreme care must be taken during handling and installation. Full
consideration should be given to how you will safely transport your roof window product from the delivery
vehicle to the installation location. Glazing Vision strongly recommends that specialist, mechanical lifting
equipment is employed.
Consider:
•The weight(s) of the product purchased.
•How you will safely transport your roof window product from the delivery vehicle to the installation
location.
•All lifting methods and equipment required for safe installation to eliminate manual handling.
•How you will safely access the area to carry out installation.
•Any openings, voids or unprotected edges that might pose a significant risk whilst working at height.
•Use of scaffolding with all appropriate edging, rails and inspection certification.
•If specialist access or equipment is required e.g. a fall arrest system.
•What personal protective safety equipment (PPE) is required for working at height –e.g. harness.
•Methods for safe working, for example, to avoid falling from height, reducing manual handling and so as
not to drop equipment.
•How you will transport tools and other equipment to the installation area.
•The number of persons required to assist with safe installation.
•The competence, capability and experience of the installation team to safely carry out the task.
•Impact of weather on safe installation, especially driving rain and high winds.
If in doubt, please contact Glazing Vision for assistance.
Anticipated hazards may include:
•Falls from height
•Working with specialist lifting equipment or third-party lifting
•Manual handling injury
•Equipment falling from height
•Slips, trips and falls
•Fragile roof areas.
•Finger or clothing entrapment under unit, in mechanical or moving parts
•Working with electricity
•Impact of weather conditions
•Competence of personnel
Do not attempt to repair, move or dismantle the product unless suitably competent and qualified to do so, with
the appropriate safety measures in place. Any repairs and/or movement of the product may invalidate the
warranty. Please seek advice from Glazing Vision.
Any electrical work is to be carried out by a qualified and competent electrician in accordance with Glazing
Vision’s wiring diagram(s).

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Warning
The following warnings are here to prevent personal injury and damage to the product. Please follow them explicitly.
General:
•The product must be properly installed and commissioned in accordance with this manual before it is used.
•Glazing Vision strongly recommends that any work is carried out by suitably qualified individuals (e.g. licensed/registered
contractors, Glazing Vision Engineers or Approved Installers, or an experienced electro-mechanical service engineer).
•Glazing Vision strongly recommends that specialist, mechanical lifting equipment is employed.
•Use the product only for its intended purpose.
•Regular cleaning and maintenance must be carried out according to guidelines.
•A safe working platform must be provided for any installation/maintenance work carried out. This includes suitable edge
protection.
•Glazing Vision cannot be held responsible for damage incurred during the lifting and transportation of the product to the
installation location (please refer to terms and conditions of sale).
Pre-Installation:
•Glazing Vision products are heavy, fragile and of awkward shape and size. There may be uneven weight distribution due to the
materials used and their design.
•The weight(s) of each individual product (or product section) will be clearly marked on the product and will be communicated
to clients before dispatch of goods.
•Never install any product showing signs of damage. If in doubt consult Glazing Vision for advice.
•Please dispose of the packaging material for this product in a considerate manner. Cardboard and wood items are widely
recycled.
Electrical Works/Cables:
•It is recommended that electrical work is carried out by a qualified and competent electrician.
•Do not pull, squash, bend or damage cables where they exit the product. Doing so may loosen connections and this may result
in damage to the product and/or create the need for a repair visit.
•Should any cables or electrical components break or become damaged, have them repaired or replaced immediately.
Deteriorated insulation of electrical parts or overloading may cause an electric shock or fire.
•Do not install the circuitry in a damp place or a place where it may come into contact with water.
During Use:
•Do not touch the chain actuators after operating the unit as they may become hot.
•Do not walk or sit on the unit.
•Risk of crush and/or trapping injuries. Make sure that fingers and other obstructions are kept clear of the product and its
mechanisms at all times.
•Overcurrent protection is designed to prevent damage to the product and its mechanisms. It should not be relied upon to
prevent injuries.
•Do not place anything on, or cause obstruction to, the moving sections of the product as this may cause damage to the
mechanisms/product and/or prevent the unit from opening/closing.
•Do not allow unauthorized persons (e.g. children) to operate the product as this may lead to personal injury or damage to the
product. Do not leave children or pets unsupervised near the product –it may open/close unexpectedly (e.g. due to the rain
sensor activating) and cause injury.
•Do not leave the product open in the rain, this could damage the control board and/or mechanisms. If required, a rain sensor
can be specified at the time of order.
For more information or assistance please contact Glazing Vision.

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Pre-Installation Preparation
These products can be very heavy. Due consideration should be given to getting the product onto the roof safely and
extreme care taken during installation.
Points to Note Prior to Commencing Installation
1. The Pitchvent should arrive on site in undamaged packaging, which includes a wooden build frame/blocks, cardboard,
polyfoam glass protection and low tack tape. Please inspect for damage to packaging and/or product and advise Glazing Vision
of any damage or shortfall within 48 hours from signing the receipt of your delivery.
2. Enclosed within the box containing this manual will be the required number of fixing woodscrews and a number of plastic
packers, as well as some silicone and other required materials. The installation kit is supplied with a control switch (Chain
Actuated Pitchvents only), a Power Supply Unit (PSU –Chain Actuated Pitchvents only) and any additional optional items
selected at the time of order.
Standard Installation Hardware
Enclosed within the hardware box for each unit you should find at least the following:
Stainless steel woodscrews
Plastic horseshoe packers
(various sizes)
Low modulus silicone
Butyl tape
(1/4” diameter)
Flashing Kit
If a flashing kit has been specified, the following items should also be included:
Lead sheet
Head flashing (5-7/8” wide)
Sill flashing (17-3/4” wide)
Lead for soakers (17-3/4” wide)
Roofing underlay
Head apron (39-3/8” wide)
Jamb aprons (39-3/8” wide)
Butyl tape
(2” wide)
3. Chain Actuated Pitchvents have two coiled cables emerging from the motor housing as standard (if optional extras have been
selected, other cables may also be present). This includes 2 single cores (red and black) 24V DC power cables and a 6 core
control cable. These cables will have identification labels on them (labels should not be removed until final installation). Please
refer to Glazing Vision’s wiring diagrams for details of wiring requirements. Only the supplied PSU can be fitted to the unit,
failure to connect this unit or wiring direct to the main power supply will invalidate the product warranty.

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4. The switch used to control the operation of the Chain Actuated Pitchvent is a two button wall mounted control switch. This
switch will allow you to operate and stop at any position between the fully open and closed positions. This switch also contains
a tri-color LED to display the product status to the user. The correct control switch is supplied in the installation kit and must
be installed to avoid invalidating the warranty. If required, this switch can be installed in a maintenance area and another switch
of a retractive single pole double throw (SPDT, ‘on-off-on’, latching off) type can be parallel wired for regular use. Using a SPDT
switch that only latches ‘on-on’ can seize the control board and therefore should not be used.
5. The Chain Actuated Pitchvent also requires a 5A fused double pole single throw (DPST) type switch (not supplied). Combined
with disconnecting the battery backup (if specified), installing this switch as per the wiring diagram will allow the control board
to be reset in the event of a fault (for more information on faults and troubleshooting see the operation and maintenance
manual).
6. The supporting structure must already be in place for the product. The dimensioning of the product will have taken into
consideration the dimensions of the supporting structure including all weathering. More information about supporting
structure construction can be found in Glazing Vision’s sales drawings. Please note that a minimum distance of 4” clearance
between the supporting structure and any surrounding structures must be left on all sides. Sufficient room for installation
(including weathering) and maintenance must also be allowed for.
7. It is important to consider the type of tile or other roof finish to be used. The opening in the roof should ideally be positioned
so that you get a full tile at the top and at the bottom of the product, avoiding the need to cut tiles down.
8. It is important to ensure that the area of installation is suitably prepared. The area surrounding the supporting structure should
be clear to provide safe access during the installation works. It will be necessary to work on the outside and therefore suitable
provisions should be made for safe handling of the product, including all relevant personal protective equipment (PPE) and
safety systems for working at heights.
9. Before starting installation, Glazing Vision advises that the physical supporting structure dimensions are cross-checked with
those given for the order, to ensure the product will fit. The supporting structure will need to be within ± 3/8”of the ordered size
(measured across the flats). The top surface of the supporting structure should be flat without undulations greater than ± 1/16”.
Also check the diagonals to ensure that the supporting structure has been constructed square. The supporting structure must
be weathered as per the sales drawings. If using any metallic waterproofing material, take care when applying it to the
product/supporting structure, as if done incorrectly it can cause a thermal bridge which can lead to internal condensation and
invalidate the product warranty.
It is important that the supporting structure is made to the pitch specified on the order confirmation. Failure to comply
with this may result in product failure due to the overloading of its mechanisms. Glazing Vision accepts no responsibility
for failures as a result of incorrectly pitched products.
10. These products can be very heavy. Glazing Vision strongly recommends that a structural engineer is consulted when designing
the structure(s) that will support the product and the surrounding structure. Nothing in this manual or on Glazing Vision’s sales
drawings constitutes a structural proposal.
11. Preparation of the roof prior to installation will vary depending on roof type and roofing materials. A few common scenarios
are included in this manual. Please follow the applicable steps for your configuration. Glazing Vision strongly recommends that
a ‘dry run’ (without any silicone or butyl) is completed before committing to the final installation.
Sales Drawings
Sales drawings for the Pitchvent can be obtained by downloading them from Glazing Vision’s website
(www.glazingvision.com/technical-downloads) or by contacting Glazing Vision.
Sales drawings should accompany this installation manual. If you do not have them then do not continue the installation
without them.

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Preparation of the Roof
Standard Installation
Typically for cold-roof construction –the product will sit directly upon the outside of the rafters.
Sales drawings:
Installation: 202-ASS-002
Fixing dimensions: 202-ASS-001
Figure A –Example of standard installation
When preparing rafters, consider how the ends of the battens will be supported at the jambs of the product. Study the sales drawings of
the product carefully when designing the size of the aperture. Figure A is for illustrative purposes only and may not be suitable for your
installation.
These products can be very heavy. Glazing Vision strongly recommends that a structural engineer is consulted when
designing the structure(s) that will support the product and the surrounding roof. Nothing in this manual constitutes a
structural proposal.
Before continuing onto the installation instructions:
The rafters and horizontal trimmers that will support the product should be complete and in place.
The surrounding roof should not yet be felted or battened, this will be covered in the installation instructions.
Product to sit on face
of rafters and trimmers
Supporting rafter
Supporting trimmer

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Preparation of the Roof –Sunken Installation
Typically for cold-roof construction with thin roofing materials, such as slate –the product will sit on the outside of a separate frame
sunken below the outside level of the rafters.
Sales drawings:
Installation: 202-ASS-003
Fixing dimensions: 202-ASS-001
Figure B –Example of sunken installation
Study the sales drawings of the product carefully when designing the size of the main aperture and secondary sunken frame. Figure B is
for illustrative purposes only and may not be suitable for your installation.
These products can be very heavy. Glazing Vision strongly recommends that a structural engineer is consulted when
designing the structure(s) that will support the product and the surrounding roof. Nothing in this manual constitutes a
structural proposal.
Before continuing onto the installation instructions:
The sunken frame that will support the product, and the surrounding rafters and horizontal trimmers, should be
complete and in place.
The surrounding roof should not yet be felted or battened, this will be covered in the installation instructions.
Secondary frame
sunken below the
level of the rafters
Product to sit on face
of sunken frame
Secondary fillet

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Preparation of the Roof –Raised Installation
Typically for warm-roof construction –the product will sit on a frame built up from the rafters.
Sales drawings:
Installation: 202-ASS-004
Fixing dimensions: 202-ASS-001
Figure C –Example of raised installation
When preparing rafters, consider how the insulating sheathing and the ends of the battens will be supported at the jambs of the product.
Study the sales drawings of the Product carefully when designing the size of the aperture and spacers. Figure C is for illustrative purposes
only and may not be suitable for your installation.
These products can be very heavy. Glazing Vision strongly recommends that a structural engineer is consulted when
designing the structure(s) that will support the product and the surrounding roof. Nothing in this manual constitutes a
structural proposal.
Before continuing onto the installation instructions:
The raised frame that will support the product, and the surrounding rafters and horizontal trimmers, should be complete
and in place.
The insulating sheathing (the insulation installed outside the rafters) and the counter-battens of the surrounding roof
should be complete and in place.
The surrounding roof should not yet be felted or battened, this will be covered in the installation instructions.
Spacers added to raise
the product away from
the rafters
Product to sit on
face of spacers

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Installation Procedure
Note that the installation shown here is a standard installation, using tiles at 4-3/4” gauge. Other installations differ superficially, but the
installation process is similar. All of the images in this guide are diagrammatic. They should be used as a reference only and may not be
a true representation of your installation. Please refer to Glazing Vision’s sales drawings throughout the installation.
Figure D –Example of standard installation (duplication of figure A)
Ensure that you have read and understood the entire installation instructions section before starting.
The surrounding roof should not yet be felted or battened, this will be covered in the installation instructions.
Prior to commencing installation, photographs of the fully weathered supporting structure and surrounding area must
be taken and retained for future reference.
Step 1 –Install, Trim and Finish the Roofing Underlay (Felt or Membrane)
Trim and then fold the underlay back on itself as shown. The underlay should be folded back on the structure that will support the
product. If desired, a layer of silicone can be used to seal the cut edge down.
If a sunken installation is used, the secondary fillet (not supplied) should be underneath the underlay.
Figure 1 –Roofing underlay installed and prepared
Cut edge of underlay
folded back

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Step 2 –Install the Sill Tilting Fillet
Install a tilting fillet as shown (not supplied) - Glazing Vision recommends that a hardwood or treated softwood fillet is used. The sill
tilting fillet should be at least the length of the external width of the product and have a minimum 5° fall over the fillet. Consider the
distance required between the sill of the product and the fillet (figure 2 –gap A), and also the height of the fillet. Fix the fillet to the rafters.
Figure 2 –Sill tilting fillet installed
The purpose of the tilting fillet is to support the flashing at the sill of the product. Lead used for flashing must be
supported or it will sag over time, allowing water to pool or even to run underneath the tiling to the sides of the product.
Step 3 –Prepare and Install the Sill Flashing
Using either the sill flashing supplied as part of the flashing kit (if specified), otherwise use 0.042” thick flashing lead, fit the sill flashing.
The flashing should be at least 11-3/4” longer than the external width of the product and should be installed centrally. For sunken
installations the lead should extend beyond the sunken detail on either side, dressing it neatly up and over the step. The flashing should
lap under the sill of the product by at least 2” but should not overlap the butyl tape to be applied in step 4. Apply silicone underneath
the flashing, and if required fix the flashing in place using brass or stainless steel tacks (not supplied).
Figure 3a –Sill flashing in position
Figure 3b –Sill flashing detail for a sunken installation
Sill fillet (primary)
Gap A
Sill flashing
Flashing length

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Step 4 –Place and Fix the Product in Position
These products can be very heavy. Due consideration should be given to getting the product onto the roof safely and
extreme care taken during installation.
Glazing Vision supplies woodscrews with the Pitchvent. If fixing to a support structure made from a material other than
timber, ensure the correct type of screws or fixings have been sourced prior to commencing this step.
Before attempting to lift the product, please check that the yellow transport plate(s) are securely attached to the product.
Remove all packaging from the product including polyfoam glass protection and low tack tape.
When removing the packaging, try to keep it intact as much as possible, so that after installation it can be re-used to
protect the product until project completion and final handover.
Using masking tape, tape the plastic packers (supplied) along the jambs and sill, ensuring that the product will sit centrally in the
aperture –there should be a nominal 3/8” gap on all sides (filled with packers). Ensure that these will not conflict with the fixing holes in
the product.
Figure 4a –Tape plastic packers along jambs and sill
Apply a continuous line of silicone (supplied) onto the underlay approximately 2-1/2” from the internal aperture.
Apply a continuous loop of 1/4” diameter butyl (supplied) to the underside of the product.
Figure 4b –Continuous silicone bead on top of underlay
Silicone –approx. 2-1/2”
from aperture on all sides

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Figure 4c –Continuous butyl loop on the underside of the product
Fit the chosen lifting equipment to the unit and check that it is secure.
Carefully lift the product to the installation site (roof) using strops underneath the wooden build frame/bocks. This is to ensure that the
build frame/blocks do not separate from the product during the lift.
When on the roof the product should be lifted off the wooden build frame/blocks (remove the fixings first) and then gently lowered onto
the supporting structure ensuring that the cables are not kinked or snagged under the framework.
With the framework in contact with the supporting structure top and the majority of the weight still supported by the crane/lifting
equipment, adjust the position of the product on the supporting structure so that the internal framework is equally spaced and aligned
with the internal finishes. Take care when positioning the product during final installation, as once the weight of the unit has been placed
onto the sealants it adheres to the supporting structure making repositioning difficult.
Once satisfied that everything is correctly positioned, carefully release the weight of the product. Remove the crane and lifting
equipment.
Figure 4d –Place product centrally into aperture
Working inside the building, drill Ø1/8” pilot holes into the supporting structure through the pre-drilled holes in the product’s framework.
Secure the product to the supporting structure using the woodscrews and packers provided in the hardware kit. The packers must fill
the entire gap between the supporting structure and product for each woodscrew. Care should be taken when tightening the fixings to
ensure the frame does not distort.
Position the packers as needed, to ensure that the product is centrally positioned, fix the product into place using the appropriate fixings
(woodscrews supplied).
If performing a dry run, screws through some of the fixing holes into the rafters can be used to temporarily hold the
product in place. The position of the product can be marked, and the product removed. The installation can then be
started.
If installing into an alternative material to wood, it may be necessary to source suitable wall plugs and/or fixings to use
instead of those provided.
Butyl
Product sits on top
of flashing, butyl and
silicone

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Figure 4e –Fixing detail (from inside)
Step 5 –Silicone the Head, Sill and Jambs
Run a continuous thick fillet of silicone (supplied) along the entire length of the head, the sill and both jambs.
Figure 5 –Head, sill and jambs siliconed
Whilst still wet, excess silicone can be cleaned from the product by spraying on a small amount of soapy water and wiping
with a cloth or paper towel.
Use as many/few
packers as required
Continuous fillet of
silicone around the
product

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Step 6 –Apply the Butyl Tape to the Jambs
Apply 2” butyl tape (supplied as part of flashing kit if specified, otherwise use approx. 1/16” double-sided butyl tape) to the full length of
the gutter lip on both jambs (sides).
Figure 6a –Butyl tape applied to jambs
Figure 6b –Butyl tape applied to jamb
Step 7 –Place the Jamb Aprons in Position
Place the jamb aprons in position (use the roofing underlay supplied as part of the flashing kit if specified, otherwise use roofing underlay
of at least 39-3/8” in width). The aprons should be at least 5-7/8” longer than the external span of the product. The bottom edge of each
apron should lap over the sill flashing and should align with the bottom edge of the product sill. The aprons may be tacked in position
to the rafters/counter-battens below.
Figure 7a –Jamb aprons positioned
Apply butyl to full
length of gutter lip
Lay butyl tape
over gutter lip
Length of
jamb apron
Bottom edge of jamb
apron to align with sill
edge of product and
overlap sill flashing
Difference of at least 5-7/8”
Approx. 39-3/8” wide

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Figure 7b –Jamb apron adhered to butyl tape
Step 8 –Install the Head Tilting Fillet
Install a tilting fillet as shown (not supplied) - Glazing Vision recommends that a hardwood or treated softwood fillet is used. Fix the fillet
to the rafters.
Figure 8 –Head tilting fillet installed
This product is designed for the roofing underlay to drain over the head flashing and into the head gutter of the product.
The purpose of the tilting fillet is to support the apron and flashing at the head of the product. Lead used for flashing
must be supported or it will sag over time, allowing water to pool or even to run underneath the tiling to the sides of the
product.
Step 9 –Install the head flashing
Using either the head flashing supplied as part of the flashing kit (if specified), otherwise use 0.042” thick flashing lead, fit the head
flashing. The flashing should be at least 11-3/4” longer than the external width of the product and should be installed centrally.
Figure 9a –Head flashing installed
Jamb apron folded
around gutter lip
Head fillet
Head flashing

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Figure 9b –Head flashing installed
Step 10 –Install the Head Apron
Place the head apron in position (use the roofing underlay supplied as part of the flashing kit if specified, otherwise use roofing underlay
of at least 39-3/8” in width). The apron should cover the top of the head flashing entirely. The bottom edge of the apron should lap over
the head flashing by at least 2”, and the top edge should lap under the underlay of the roof by at least 2”. If the underlay
supplied/recommended does not reach, then a second piece should be used as an intermediary, lapped over the original piece and
lapped under the underlay of the roof.
The head apron must be lapped into the roof underlay as described in this step. Failure to lap the apron properly may
result in water ingress above the product. This lapping is also shown on the sales drawing.
Figure 10 –Head apron installed
Head flashing tucked into head gutter of product
Head apron lapped
over the head flashing

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Step 11 –Batten the Roof
Batten up to the sill. In addition to normal considerations, consider how the tiles/slates will fit around the product when determining
the gauge of the battens. The battens should be fixed in place ready for tiling/slating. Batten to either side of the product and then batten
the roof above the product.
Figure 11 –Battens installed
Step 12 –Prepare the lead soakers
Using either the lead supplied as part of the flashing kit (if specified), otherwise use 0.042” thick flashing lead, fit the lead soakers. The
soakers should tuck approximately 4” between the tiles/slates, should fold under the gutter of the product and should overlap by at
least 2”.
Figure 12a –Example of installed soakers
Figure 12b –Example of a soaker
Glazing Vision strongly recommends that the manufacture and installation of soakers is carried out by a competent lead-
worker.
Figure 12a is presented only as an example. The soakers described in figure 12b may not be suitable for your roof.
Bottom end
Top end
4”
This edge to fold around
gutter lip of product
Length = gauge + lap of tiles
Flange folded around top of
tile to hold soaker in place
This area to sit between tiles

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Step 13 –Tile the Roof and Install Soakers
Before tiling, take the opportunity to check the weathering (overlap) of the aprons and flashings and to check the silicone
sealing the jambs.
Tile up to the batten below the product. Fold and boss the sill flashing into final position.
Figure 13a –Sill tiled and sill flashing finished
Tile to either side of the product, installing the soakers as you go.
Figure 13b –Jambs tiled and soakers installed
Tile above the product. Glazing Vision recommends that eaves tiles are used immediately above.
Figure 13c –Roof tiled above the head
Do not apply any interior finishes yet. Refer to the relevant following section to set up the mechanisms and initialize the
product.
Once installation has been completed take photographs of the finished installation. These must be retained for future
reference.
Eaves tiles