Use 10G X 16MM Galvanised Self Drilling TEK Screws with Neoprene
Washer or 5/32 (4.0mm) Rivets Aluminium/Steel Sealed for
fastening.

Safety and Warnings

• The installation of this product involves working at heights on
  a sloping surface and may be dangerous, including the potential of
  death, personal injury, or property damage.
• Follow the state or territory regulator OH&S guidelines for
  working at heights, electrical, working in.

Industrial Ventilators Installation Instructions
EcoPower® and Hurricane®
Non-Cyclonic

PRINT IN COLOUR

V3.0 | 08/22

SYSTEM PRE-REQUISITES ­ Check Before Commencing

Before attempting to start the installation, please ensure that the following allowable roof pitch and make-up air requirements can be met.

Product

Make-up air* per ventilator – 100%

Allowable Roof Pitch

open, evenly distributed open area

EcoPower 400 Hurricane 100 – 400

0.3m²

up to 45°

EcoPower 600 Hurricane 450 – 600

0.5m²

up to 45°

EcoPower 900 Hurricane 700 – 900

0.9m²

up to 22.5°

* Performance values are based on a 5Pa pressure loss across the make-up air opening.

Additional make-up air can be provided as per the recommendations in AS1668.2.

DO NOT PROCEED TO INSTALL THIS PRODUCT IF THE ABOVE REQUIREMENTS ARE NOT MET 1. PACKING LIST (for a standard complete product) ­ Check Before Commencing
Included Parts

Ventilator Head

Varipitch

Flashing

Additional Materials Required – Not Supplied

a. FASTENERS (Quantity and Type)

Product

Head to Varipitch Varipitch to Flashing Flashing to Roof

EcoPower 400 Hurricane 100 – 400

6

6

12

EcoPower 600 Hurricane 450 – 600

9

9

16

EcoPower 900 Hurricane 700 – 900

12

12

26

Fasteners

Use 10G X 16MM Galvanised Self Drilling TEK Screws with Neoprene

Washer or 5/32″ (4.0mm) Rivets Aluminium/Steel Sealed

2
The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

b. SUPPLEMENTARY FLASHING required for installation away from the ridge ­ refer to section 4 for details.
c. PESTGUARD (if required) to provide protection against the entry of vermin. IMPORTANT: Note regarding lifting this product Lift the product in its original packaging using a crane or similar equipment to the roof mounting location, prior to handling the product. Caution During Lifting: The ventilator top surface/dome can be easily scratched or deformed when placed upside down so always place it on a soft/smooth surface such as cardboard or a soft-foam mat.
3 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

SAFETY AND WARNINGS a. The installation of this product involves working at heights on a sloping surface and may be dangerous,
including the potential of death, personal injury, or property damage. b. Follow the state or territory regulator OH&S guidelines for working at heights, electrical, working in
elevated temperatures (e.g. roof space in summer). For more information on your State OH&S guidelines for working at heights, please refer to: https://www.safeworkaustralia.gov.au/heights c. All ventilation products must be installed by a qualified installer and all electrical wiring (where applicable) must be undertaken by a qualified electrician. d. EcoPower Hybrid Ventilators use 220V-240V AC power for the electrically powered components and electrical connections must only be undertaken by a qualified electrician. e. EcoPower Hybrid Ventilators are supplied with either a Smart Controller or Interface Box – these devices must not be tampered with and the hybrid ventilator must not be operated without either of these devices. f. Do not attempt to power up EcoPower Hybrid Ventilators when the product is not suitably roof mounted as the turbine will rotate without warning and may create a hazard. g. Due to the size and weight of the turbine, it is recommended that it is always lifted by 2 people or a crane. Refer to the lifting instructions. h. Damaged parts must be replaced with a genuine replacement part from CSR Bradford Ventilation. i. The turbine head of this product can rotate without warning (even during installation) ­ always keep body parts away from moving components. j. Please read this manual carefully before installing this product and keep it for future reference or provide it to the building owner/maintenance manager.
LIMITATIONS Not suitable for use in cyclonic regions.
4 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

2. VENTILATOR POSITIONING & PROVISION FOR MAKE-UP AIR CSR Bradford Ventilation recommends that ventilators are positioned 4m to 6m away from each other in all directions for effective and efficient performance. It is also recommended that ventilators of the same size are used together to prevent replacement air from being drawn between ventilators of different sizes. Ensure that the ventilators are not sheltered from the wind by surrounding objects, the shadow angle created by the roof ridge or by each other. Make-up air is required for this ventilator to replenish the exhausted air. As a general guide, the largest make-up air entry should be positioned on the opposite side of the building to the largest ventilator demand. The make-up air location should be positioned at optimum height to provide efficient sweeping of the floor area. The illustrations below provide a number of generic ventilator and make-up air layouts but it should be noted that a whole-of-building assessment, as per AS1668.2, should be conducted by a suitably qualified person prior to deciding upon site-specific ventilator and make-up air placement.
IMPORTANT: If external make-up air is insufficient, the ventilators will draw make-up air from each other ­ this will both diminish the effectiveness of the system and increase the risk of the system drawing external water into the building during periods of rain. It is also recommended that ventilators of the same size are used together to prevent replacement air from being drawn between ventilators of different sizes.
5 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

3. INSTALLATION UNDER THE RIDGE Note: See Section 4 for installation away from the ridge.
a. Set Position: Place the base flashing under the ridge cap at the required position and adjust the position to avoid structural roof members below the roof sheet. Ensure the flashing covers the corrugation or ribs equally on each side of the flashing, then mark a circle on the roof using the hole in the flashing as a template.
6 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

Important Note Regarding Roof Structural Support: EP400 – EP600 & H100 ­ H600 ­ If the purlin spacing is larger than 600mm, trimmers are required. Install the trimmers between the purlin on either side of the opening. Do not cover the openings. EP900 & H700 ­ H900 ­ If the purlin spacing is larger than 1000mm, trimmers are required. Install the trimmers between the purlin on either side of the opening. Do not cover the opening.
Flashing Purlin
7 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

b. Cut Hole: Carefully cut the hole, remembering that there may be insulation and other roof members under the roof sheet. Once the hole has been cut, fold up the edge of the corrugations or pans. Ensure the roofing safety mesh/net integrity is maintained after the installation.
c. Secure Flashing: Attach the flashing under the ridge cap and apply sealant prior to final fixing (refer to the table below for the required number of fasteners). If trimmers are used ensure the flashing is secured to the trimmers. Seal all fasteners with a suitable sealant to ensure they are weatherproof.
8 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

Model

Fasteners to

secure flashing

to roof

EcoPower 400

Hurricane 100 – 12 (4 near throat)

400

EcoPower 600

Hurricane 450 – 18 (4 near throat)

600

EcoPower 900

Hurricane 700 – 26 (4 near throat)

900

Use 10G X 16MM Galvanised Self Drilling TEK

Screws with Neoprene Washer or 5/32″

(4.0mm) Rivets Aluminium/Steel Sealed

d. Assemble the Varipitch: When a Varipitch throat is being used, position the Varipitch on the flashing and rotate the top and bottom halves until the top of the Varipitch is level (horizontal) it is recommended that an electronic or spirit level is used to ensure that the top edge of the throat is horizontal in all directions.

9
The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

e. Secure the Varipitch Angle: With the Varipitch upper throat positioned horizontally, lock it into position using the supplied Varipitch clip. Use either self-tapping screws or blind rivets to secure all the clips between the two halves of the Varipitch.
f. Weather Sealing: Seal the Varipitch seam on the inside with a bead of weather-resistant suitable sealant.
Do Not Seal
NOTE: DO NOT apply sealant to the joint between the flashing and Varipitch. This is a natural gutter to release any trapped condensation. See details in section (i) below.
10 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

g. Secure Varipitch to Flashing: Reposition the Varipitch on the Flashing and check it is horizontal – secure the Varipitch to the flashing using the recommended number of screws shown in the table below ­ DO NOT SEAL this connection.

Model

Fasteners to

secure

varipitch to

flashing

EcoPower 400

6

Hurricane 100 – 400

EcoPower 600

9

Hurricane 450 – 600

EcoPower 900

12

Hurricane 700 – 900

Use 10G X 16MM Galvanised Self Drilling TEK

Screws with Neoprene Washer or 5/32″ (4.0mm)

Rivets Aluminium/Steel Sealed

h. Assemble Turbine: Assemble the turbine head to the Varipitch. Re-check if the assembly is level (horizontal) and adjust the turbine by tilting the throat slightly if required. Ensure the knurling (the tapered section of the Varipitch) is fully inside the ventilator throat and secure the ventilator throat by fastening it to the top of the Varipitch with the number of fasteners shown in the table below.

Model

Fasteners to

secure turbine

to varipitch

EcoPower 400

6

Hurricane 100 – 400

EcoPower 600

9

Hurricane 450 – 600

EcoPower 900

12

Hurricane 700 – 900

Use 10G X 16MM Galvanised Self Drilling TEK Screws with Neoprene Washer or 5/32″ (4.0mm) Rivets Aluminium/Steel Sealed

NOTE: DO NOT apply sealant to the joint between the turbine and Varipitch. This is a natural gutter to release any trapped condensation. See details in section (i) below.
11 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

i. Sealing is crucial for this product to ensure no leaking occurs during its lifespan, but there is also a requirement for drainage. To ensure that only the required areas are sealed and the drainage path is left open, follow this guide carefully:

Location Area All fasteners
Flashing perimeter to roof Varipitch seam (inside throat)
Turbine to varipitch Varipitch to flashing Flashing bottom edge to roof

Sealing Requirement Seal Seal Seal
Do Not Seal Do Not Seal Do Not Seal

Do Not Seal

Do Not Seal Do Not Seal

12
The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

4. INSTALLATION AWAY FROM RIDGE a. Set Position: Place the base flashing at the required position and adjust the position to avoid structural
roof members below the roof sheet. Ensure the flashing covers the corrugation or ribs equally on each side of the flashing, then mark a circle on the roof using the hole in the flashing as a template.
13 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

Important Note Regarding Roof Structural Support: EP400 – EP600 & H100 ­ H600 ­ If the purlin spacing is larger than 600mm, trimmers are required. Install the trimmers between the purlin on either side of the opening. Do not cover the openings. EP900 & H700 ­ H900 ­ If the purlin spacing is larger than 1000mm, trimmers are required. Install the trimmers between the purlin on either side of the opening. Do not cover the opening.
Flashing Purlin
14 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

b. Cut Hole: Carefully cut the hole, remembering that there may be insulation and other roof members under the roof sheet. Once the hole has been cut, fold up the edge of the corrugations or pans. Ensure the roofing safety mesh/net integrity is maintained after the installation.
c. Secure Flashing: Attach the flashing over the roof hole and back flashing tray to extend the ridge to the ventilator’s flashing. Apply sealant prior to final fixing (refer to the table below for the required number of fasteners). If trimmers are used ensure the flashing is secured to the trimmers. Seal all fasteners with a suitable sealant to ensure they are weatherproof.
15 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

Extended Flashing
(not supplied)

Overlap requirement between extended flashing and turbine flashing is 100mm to 250mm.

Model

Fasteners to

secure turbine

flashing to roof

EcoPower 400

Hurricane 100 12 (4 near throat)

– 400

EcoPower 600

Hurricane 450 18 (4 near throat)

– 600

EcoPower 900

Hurricane 700 26 (4 near throat)

– 900

Use 10G X 16MM Galvanised Self Drilling

TEK Screws with Neoprene Washer or

5/32″ (4.0mm) Rivets Aluminium/Steel

Sealed

16
The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

d. Assemble the Varipitch: When a Varipitch throat is being used, position the Varipitch on the flashing and rotate the top and bottom halves until the top of the Varipitch is level (horizontal) it is recommended that an electronic or spirit level is used to ensure that the top edge of the throat is horizontal in all directions.
e. Secure the Varipitch Angle: With the Varipitch upper throat positioned horizontally, lock it into position using the supplied Varipitch clip. Use either self-tapping screws or blind rivets to secure all the clips between the two halves of the Varipitch.
17 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

f. Weather Sealing: Seal the Varipitch seam on the inside with a bead of weather-resistant suitable sealant.
Do Not Seal
NOTE: DO NOT apply sealant to the joint between the flashing and Varipitch. This is a natural gutter to release any trapped condensation. See details in section (i) below. g. Secure Varipitch to Flashing: Reposition the Varipitch on the Flashing and check it is horizontal – secure the Varipitch to the flashing using the recommended number of screws shown in the table below ­ DO NOT SEAL this connection.
18 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

h. Assemble Turbine: Assemble the turbine head to the Varipitch. Re-check if the assembly is level (horizontal) and adjust the turbine by tilting the throat slightly if required. Ensure the knurling (the tapered section of the Varipitch) is fully inside the ventilator throat and secure the ventilator throat by fastening it to the top of the Varipitch with the number of fasteners shown in the table below.

Model

Fasteners to

secure turbine

to varipitch

EcoPower 400

6

Hurricane 100 – 400

EcoPower 600

9

Hurricane 450 – 600

EcoPower 900

12

Hurricane 700 – 900

Use 10G X 16MM Galvanised Self Drilling TEK Screws with Neoprene Washer or 5/32″ (4.0mm) Rivets Aluminium/Steel Sealed

NOTE: DO NOT apply sealant to the joint between the turbine and Varipitch. This is a natural gutter to release any trapped condensation. See details in section (i) below.

19
The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

i. Sealing is crucial for this product to ensure no leaking occurs during its lifespan, but there is also a requirement for drainage. To ensure that only the required areas are sealed and the drainage path is left open, follow this guide carefully:

Location Area All Fasteners Back Flashing perimeter Turbine Flashing perimeter to roof Varipitch Seam (inside throat) Turbine to Varipitch Varipitch to Flashing Flashing bottom edge to roof

Sealing Requirement Seal Seal Seal Seal
Do Not Seal Do Not Seal Do Not Seal

Do Not Seal

Do Not Seal Do Not Seal

20
The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

5. MAINTENANCE
Regular maintenance of this product is essential to ensure its safe and long-term operation. It is the responsibility of the building owner or manager to outline the maintenance program throughout the product’s lifespan. The following components should be inspected on a regular basis:
WARNING: Prior to inspecting the ventilator ensure that the power is turned off and that the ventilator head is held in a static position by another person using a gloved hand on the top surface of the turbine (away from the turbine blades) ­ this should not be undertaken on a windy day when the turbine head cannot be safely slowed.
· Rotating/turbine head ­ check for excessive movement/contact between components, unusual noise during rotation, listen for noises and assess visual wear & tear.
· Fasteners ­ check all are in situ and well-sealed. · Flashing Connections ­ check joints that are meant to be sealed remain sealed and that those that
are meant to be unsealed are clear of obstruction. · Pestguard (if provided) ­ ensure this is clear of debris. · Electrical component and connections ­ check connections for wear or exposure damage.

6. TROUBLESHOOTING GUIDE
No Failure Mode / Potential Cause(s) 1 Issue: Water or rain leakage
Potential Cause: Varipitch connection not sealed.
Action: Seal Varipitch connection with flexible, weatherproof sealant.
Additional Information: The photo in the sidebar shows the possible outcome if the Varipitch connection has been slightly separated during angle adjustment or has not been sealed.

Image / Description

2 Issue: Water or rain leakage
Potential Cause: Ventilator throat gutter blocked.
Action: Remove blockage ­ refer drainage diagram in these instructions
Additional Information: Placing sealant around the bottom of the vent throat where it contacts the flashing blocks the vent gutter at the base of the throat, preventing the release of internal condensation and mist from the inside of the throat.
21 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

3 Issue: Water or rain leakage Potential Cause: Insufficient turndowns along the front edge of the back-flashing due to low roof pitch and driving rain. Action: Extend turndown or re-flash
4 Issue: Water or rain leakage Potential Cause: No back-flashing provided Action: Extend back-flashing to under sheet above or roof ridge cap
5 Issue: Water or rain leakage Potential Cause: Ventilator throat shortened or not used which allows rain `bounce’ to drive water off roof into ventilator Action: Install recommended ventilator throat
6 Issue: Condensation Drip (after hours) for ventilator with damper. Potential Cause: Inadequate make-up air after hours. Action: Set the damper to an open position to allow air movement during inactive hours where make-up air could not be provided via open windows shutter or louvres.
7 Reliance upon flexible sealants. Through expansion and contraction of building components over time, flexible sealants such as silicon may develop cavities or cracks which then permit water ingress. It is always recommended that mechanically overlapped seals are created with metal components to provide water protection and that flexible sealants are used to provide secondary protection. While it is recommended that silicon be applied over roofing screws – it is more reliable to use high quality blind rivets or roofing screws with integrated washers.
8 Failure to Use Ventilator Throat. It is crucial that the ventilators are installed with a Varipitch to ensure the turbine has adequate clearance from the flashing. Failure to comply with this recommendation could lead to rain ingress through the vanes resulting in leakage.
22 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

9 Creation of Negative Pressure in a Building Leading to Back-drafting. The demand for make-up air by ventilators can lead to the creation of sufficient negative pressure in the building that some vents which are working less efficiently can be forced to supply air to the other vents in order to equalise pressure. During wet weather, this can lead to rain being inadvertently drawn into the building via the ventilators and giving the appearance of a leak. The characteristics of this phenomenon occur when: a. The building is very air-tight and make-up air is not balanced. b. Vents are located at different levels on the roof with the majority adjacent to the ridge and a lesser number down slope. The ventilators located at the higher levels create pressure and draw air through the ventilators at the lower levels due to greater stack effect (T x building height) plus clearer access to wind. This issue can be addressed by installing louvres or low-level static vents to assist in balancing the air pressure.
10 Understanding and Managing Condensation Ventilators with dampers which are unable to allow the warm humid air to escape through the ventilator may be at risk of condensation. This is due to the damper becoming the interface between warm and cool environments, which causes dew point to be reached and condensation to occur on the damper. This may lead to condensation dripping inside the building. Building designers need to consider the condensation risk when selecting products with dampers as there are no preventive measures available to minimise the occurrence other than opening the damper to reduce the temperature differential.
23 The contents of this install guide are copyright protected and may not be reproduced in any form without prior written consent of CSR. Recommendations and advice regarding the use of the products described in this guide are to be taken as a guide only, and are given without liability on the part of the company or its employees. We reserve the right to change product specifications without prior notification, please refer to the CSR website for the latest version of this document. The purchaser should independently determine the suitability of the product for the intended use and application.

References

• Working at heights | Safe Work Australia