Choosing the scheme option
See Technical View 1
The scheme reference is obtained as follows:
For example, see Technical View 1
At this stage, we also need to know if the bi-fold will open in, or open out of the property.
Choosing the locking option
See Technical View 2
i) Sash - Sash Joint- 2 Locking Options:
Additional hook locking can be added.
ii) No Lock
iii) Slave Leaf - 2 Locking Options:
iv) Master Lead - 4 Locking Options:
Additional hook locking can be added
Choosing the Hinge Option
See Technical View 3
The hinges are supplied as a standard package, however, there is the option to fit alternative hinges.
i, ii, iv) Folding hinges are suitable for use on 3 of the sections
(i: Frame - Sash Joint, ii: Sash - Sash Joint and iv: Sash - Frame Joint)
Options for the Folding hinge are:
For frame to sash joints (i or iv), there is the option to use a standard 3D flag hinge. However, this may not allow for full folding of the sash and therefore is not recommended.
iii) Sash - Sash - Frame Joint:
Choosing the Handle Option
See Technical View 4
There are a number of handles which available to complete this package:
i) Handle Options:
ii) Handle Options:
iii) Handle Options:
iv) Handle Options when using Drive Bar or PZ Drive Gear:
Choose the threshold
There are two threshold options, standard or low.
Sash width: 330mm - 900mm
Rebate Sash Height: 840mm - 2360mm
Outer Frame Width: Dependent on profile type, scheme and sash width
Sash Weight: Maximum 80kg
Gear Backset: 16, 25, 30 and 35mm
Lockable Gear Backset: PZ Gear 25, 30 and 35mm
Door Lock 35mm
Variable Handle Height: 420mm - 1180mm
When choosing schemes 220, 440 or 660:
Where sashes are fixed to the frame, the folding sash hinge can be used to maintain uniformity. Support plates and packers will be required for profile systems when using the 17/38, 17/48 and 27/48 folding hinges.
Conventional door hinges can be used, though this can restrict the ability to fully fold back the sash.
There are a number of handle options for use along the bi-fold for the intermediate sashes including recessed handles, flat handle, removable lever, D handle and standard lever handle to the master leaf.
Choose standard or low threshold depending upon project requirements.
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