Aiphone LEF-3L, Instructions Manual

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SYSTEM OUTLINE & COMPONENTS (Cont.)
LE-D/LE-DA TERMINAL DEFINITIONS:
１ Station number
Ｅ Common communication
− Negative
*LS-NVP/C TERMINAL DEFINITIONS:
Red Station number
Black Common communication
Green Negative
*LE-SS(R)/LE-SS-1G COLOR CODE:
Red Station number
Black Common communication
Green Negative
* North America only
■
Precautions on Installation & Wiring
Before Installation:
· Make sure you have the proper power supply(ies) and all necessary and compatible equipment for the system.
· Lay out your system in advance, assigning station numbers for all sub station locations.
· Surge protection for the intercom equipment is recommended. Add SA-1 surge arrestors for the power supply, plus one
per two wires connected to the master station.
· Any other manufacturer's products installed with this system (power supply, external signaling device, etc.) are not
covered under Aiphone's warranty.
· When using a power supply that has no GROUND terminal, install a surge arrestor near the output as shown.
· Additional surge arrestors can be installed to protect communication lines. One surge arrestor per 2 wires on each
master station.
PS-1225/UL/S
PS-1215DIN
LEF-3L
DC 12V
Surge-
arrestor
Grounded
Install a surge-arrestor
at a location closest to the unit,
taken to earth ground.
aiphone̲e.indd 4 09.2.17, 2:14:05 PM