ICentral System One M200 Installation Manual - page 5
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The System One Home Communication System can be installed using up to 20 stations offering great flexibility.
System One provides a choice of two Master station sizes – the traditional standard size or the new compact size.
Where a Master station is not required, System One can be installed without a master using only Room and Door
stations.
Up to 3 Door stations can be fitted to a system with a choice of camera, non camera or a mixture of both.
Also now available is a new compact surface mount metal Door station (with camera).
Room stations are available in either recess or surface mount versions.
Optional surface mount back boxes are available to convert recessed door stations to surface mount.
Where System One is being fitted as an upgrade for an older style System One or VALET system, optional trim plates
are available for recessed room stations to cover the footprint left by older style room stations.
The following general procedures must be observed in relation to the location and installation of
System One Home Communication components:
Stations are not to be installed back to back or in line of sight of each other, as this will
cause feedback (squealing).
Where stations are to be fitted externally, appropriate measures to provide protection from
the weather are to be taken.
Avoid running intercom cable in parallel to electrical wiring.
The power supply should be located in an area with sufficient space for heat dissipation.
Guidelines for maximum cable lengths as set out in this manual are to be observed to avoid
the possibility of operating problems due to excessive cable voltage drop.
The maximum number of stations on any system including the Master and Door Stations is
generally limited to 20.
It is important that the power supply is properly matched to the size of the system.
Where a system is installed without a master, a VLC load resistor must be fitted to the room
station to which the power supply is connected.
Failure to use specified cable may cause problems with the performance of the system and will void
warranty on the equipment.
Responsibility will not be taken for problems that arise from the use of improper cable or
interference generated externally to the system.
An aid to reducing the effects of interference is to keep intercom stations and wiring away from AC
devices and AC wiring.
The circuitry of the intercom has been designed to minimize the effects of Radio Frequency
Interference however total immunity to this type of interference cannot be guaranteed where the
levels of interference generated are extreme.