User's Manual

Page 8
3E4291 Gallagher T20 Terminal Installaon Note | Edion 1 | August 2016
Copyright © Gallagher Group Limited
A. If using the Duct Entry variant (C300931) of the T20 Mounng Block, take the cover o it.
B. Mark the holes for the mounng screws on the mounng surface.
C. Drill the holes for the mounng screws.
D. Make a cabling hole in the Mounng Block and run the building cable through the hole, as
demonstrated next.
Thin Mounng Block with
cabling hole through the back
Duct Entry Mounng Block with
cabling hole through the top
E. Fit the terminal bezel (pictured at Step 5) to the Mounng Block as appropriate for the
Mounng Block variant you are installing, as follows:
Duct Entry variant (C300931)
• Secure the T20 Mounng Block to the mounng surface using the screws provided.
• Posion the terminal over the Mounng Block cover, and secure them both to the
Mounng Block using the screws provided.
Thin variant (C300930)
• Posion the terminal bezel over the T20 Mounng Block.
• Secure them both to the mounng surface using the screws provided.
F. Go to Step 6.
2. Ensure the building cable has been run out through the ush box.
If you are not mounng to a ush box, use the terminal bezel as a guide, to drill all ve holes.
Drill the 13 mm (1/2 inch) diameter centre hole (this is the centre hole for which the building
cable will exit the mounng surface) and the four corner xing holes. Ensure the centre hole
allows the cable to run freely out through the mounng surface, so that the terminal facia can
clip into the bezel.
Note: There is no room for the building cable to be squeezed into the terminal bezel. The
building cable must remain within the ush box or wall cavity.
3. Run the building cable through the terminal bezel.
Note: If the terminal has already been connected to the building cable, you can pass the facia
through the bezel. Care must be taken to avoid scratching the screen and keypad when passing
the facia through the bezel.
4. Secure the bezel to the ush box using the two screws provided.
When securing the bezel to a vercal, rectangular ush box, use the 6-32 UNC screws provided.
When securing the bezel to a BS 4662 Brish Standard square ush box, use the M3.5 screws
provided.