Gewiss 20 Serie Manual Del Usario página 14

9. CRITICAL CONDITIONS
Positioning of the control unit in the environment to be protected in a location which guarantees excellent
reception of the signals transmitted by the peripheral devices:
WRONG !!!
IF THE GW 20471 CONTROL UNIT IS
ASSEMBLED IN AN OFF-CENTRE
POSITION, THE SENSOR
TRANSMITTERS, ON THE OPPOSITE
SIDE OF THE HOUSE, MAY BE TOO
FAR AWAY AND WILL NOT
TRANSMIT A CLEAR SIGNAL DUE
TO THE ARCHITECTONIC BARRIERS
WRONG !!!
DO NOT PLACE THE GW 20471
CONTROL UNIT BELOW
GROUND LEVEL.
THIS WILL CAUSE MARKED
DECREASE IN THE
SENSITIVITY OF THE
RECEIVER AND THE
TRANSMITTER
Decrease in signal strength due to the shield that different building materials and furniture can create.
Barriers and objects that can drastically decrease the range of devices or create transmission disturbance:
WITH WALLS IN
PLYWOOD,
PLASTERBOARD OR
HOLLOW
PANELLING...
...RANGE
from 100% to 90%
OF FULL CAPACITY
Correct installation position for GW 20483 smoke detectors.
TX-RX RANGE OF THE GW 20471 CONTROL UNIT
GW 20477
GW 20478
GW 20471
BASEMENT
WITH WALLS IN BRICK
OR PERFORATED
BLOCKS... METAL SHEETS AND
...RANGE
from 95% to 65% from 70% to 10%
OF FULL CAPACITY OF FULL CAPACITY
BASEMENT
WITH WALLS IN
REINFORCED
CONCRETE OR
PLASTERING...
...RANGE
GW 20483
SMOKE DETECTOR
BASEMENT
14
RIGHT
ASSEMBLE THE GW 20471 CONTROL
UNIT FITTED WITH RECEIVER AND
TRANSMITTER DEVICES IN A
CENTRAL POSITION IN RELATION TO
THE ROOMS TO BE SURVEILLED.
THIS POSITION MAKES IT POSSIBLE
TO DECREASE THE DISTANCE OF THE
PERIPHERAL DEVICES
POSITION THE GW 20471 IN A
RAISED POSITION COMPARED TO
THE GROUND LEVEL. THE
RECEIVER AND TRANSMITTER
SENSITIVITY IS AT MAXIMUM LEVEL
MIRRORS
METAL DOORS
METAL GRIDS
(E.G. AIR VENTS)
AND REINFORCED
CONCRETE WALLS
GW 20490
GW 20472
REMOTE CONTROL
RIGHT
GW 20473
KEYBOARD
GW 20483