The “Standard” operator, with it’s long metal case enclosing the spent travel tube, is the most popular unit. Can be used for single or multiple window control, subject to the maximum size recommendations listed. Please note that the H35060 cannot be used with the 380 mm travel 35426 chain opener.
MANUAL CONTROL SYSTEMS FOR SINGLE OR GROUPED WINDOWS
The chain opener can fitted to most styles of aluminium, timber , or steel windows using the appropriate fixing brackets. Controlled from a wall mounted operator connected via lenghts of conduit and inner cable to the chain opener on the window.
When the handle of the operator is turned the inner cable is driven forwards or backwards inside the conduit. The moving cable engages the cog wheel of the opener , driving the chain out to open the window.
Depending of height limitations , vents can be opened 250 mm or 380 mm, with suitable openers.
A very flexible system as the conduit can be bent to go around pillars and other obstacles, usinfg the special bending tool and fixed to the wall or framework with saddle brackets.
To allow for the forwards and backwards movements of the inner cable , a length of spent travel conduit, must be fitted at either end of the controll path i.e. past the last chain opener and below the operator. (except the H35060 operator which has an integral spent travel tube).
Minimum window height for full 250 mm travel of Q35250 = 500 mm
Minimum window height for full 380 mm travel of 35426 = 900 mm
Travel on window below the minimum stated to be restricted to 30% of the window height.
For safety reasons side support stays should be fitted to all bottom hung windows.
Use only the W35127 or E35057 operators with the 35426 (380 mm) travel chain opener.
For bottom hung applications you must fit the H35034 fixing kit (sold separately)
The figure used in these charts are based on window with
4 mm double glazed units fitted with butt hinges or free pivots,no friction stays.
Please refer to our sales or technical department for advice if friction stays are fitted.
LOAD = N° CHAIN OPENERS + N° OF 90°- BENDS
Above figures based on a single bend in the conduit path. For each additional bend deduct 1 meter from the vented lenght total.
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