Kidde Fire Systems VEGA LT TM0081 User Manual
TM0081
Page 10 of 51
Issue 1.01
3.5
EXTERNAL
CONNECTIONS
3.5.1 Mains
Wiring
The Vega LT control panel receives power from either a 230V, 50Hz or 120V, 60Hz power supply. The mains
supply cable must take the shortest route possible from entering the enclosure to the mains supply terminals.
Refer figure 5. The cable must maintain an air gap of 50mm minimum between it and any other conductors.
supply cable must take the shortest route possible from entering the enclosure to the mains supply terminals.
Refer figure 5. The cable must maintain an air gap of 50mm minimum between it and any other conductors.
The mains supply requirement for the fire alarm panel is fixed wiring, using three core cable (no less than
0.75mm² and no more than 2.5mm²) or a suitable three conductor system and should be fed from an isolating
switched fused spur rated at 5amp. The fused spur isolator cover should be red and marked: FIRE ALARM –
DO NOT SWITCH OFF. The fused spur isolator must be fed from a dedicated switch or protective device at the
local mains supply distribution board.
0.75mm² and no more than 2.5mm²) or a suitable three conductor system and should be fed from an isolating
switched fused spur rated at 5amp. The fused spur isolator cover should be red and marked: FIRE ALARM –
DO NOT SWITCH OFF. The fused spur isolator must be fed from a dedicated switch or protective device at the
local mains supply distribution board.
The incoming power feed cable Earth (Green or Green/Yellow) wire should be connected to the terminal block
earth connection – Left hand terminal. The Neutral (Blue) wire should be connected to the middle terminal
marked (N) and the Live (Brown) wire connected to the right hand terminal marked (L). Refer to Figure 5.
earth connection – Left hand terminal. The Neutral (Blue) wire should be connected to the middle terminal
marked (N) and the Live (Brown) wire connected to the right hand terminal marked (L). Refer to Figure 5.
Figure 5: Mains Supply Input
3.5.2
Detection Loop Wiring
The external detection circuit wiring should be wired to form a loop to allow the system to maintain a degree of
integrity and still function even if a section of cable becomes open circuit. It is also recommended during the
system design that short circuit isolators are fitted to the detection loop, so that in the event of an external short
circuit no more than 32 addressable devices will be lost. Refer to Figure 6.
integrity and still function even if a section of cable becomes open circuit. It is also recommended during the
system design that short circuit isolators are fitted to the detection loop, so that in the event of an external short
circuit no more than 32 addressable devices will be lost. Refer to Figure 6.
Figure 6: Typical Loop Wiring