CSR Bradford Maestro BAL, Product Manual

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Bradford NCC2019 Performance Solution
The Bradford NCC2019 Performance Solution provides an alternate method to
comply with the Deemed-To-Satisfy roof ventilation requirements listed in
NCC2019 Volume 1 Clause F6.4 and NCC2019 Volume 2 Clause 3.8.7.4
Please note, c ompliance with the NCC2019 is only mandatory for new build
residential homes, and may not apply to reroof, or installation onto existing homes.
How To Comply with NCC2019 Performance Solution
To comply, the installation of both Maestro BAL and Metal Eave vents are required .
The number of Maestro BAL and Metal Eave vents required is determined by the
ceiling size directly under the roof space of the home .
General requirements for implementation of this performance solution
• Calculate the area (m2) of ceiling directly under the roof space;
• Install Maestro BAL (s) running at 30% power
^
according to the table below
• Install Bradford metal eave vents according to the table below
Note: Bradford metal eave vents cannot be substituted for any other type of eave vent
including poly eave vents due to th
e specific openess factor required.
• Distribute the metal eave vents evenly as per NCC2019
^All Maestro BAL are default set to a continuous 30% fixed speed. To comply with NCC2019 Performance
Solution this setting must not be changed. See Page 4 for more details.
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