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Section 2 - Wiring
Prior to installing wiring to the telephone entry system, we suggest that you become familiar with the
instructions, illustrations, and wiring guidelines in this manual. This will help insure that you
installation is performed in an efficient and professional manner. This telephone entry system
contains a number of static sensitive components that can be damaged or destroyed by static
discharges during installation or use. Discharge any static prior to removing the circuit board from the
lobby panel by touching a proper ground device.
The wiring of the telephone entry panel is an extremely important and integral part of the
overall access control system. Use proper wire for the communication line, power wires, and
be sure that the system is properly grounded. Check all local building ordinances and
building codes prior to installing this system. Be sure your installation is in compliance with
local codes.
Use only the supplied transformers (or U.L. listed equivalent) to power the telephone entry system
(16.5 VAC, 50 VA). Do not power any other devices (electric strikes, magnetic locks, etc.) from this
power transformer. For wire runs up to 100 feet, use 18 AWG, 600 volt insulated wire. For wire runs
up to 200 feet, use 16 AWG, 600 volt insulated wire.
• Use 18 AWG wire for power runs up to 100 feet.
• Use 16 AWG wire for power runs up to 200 feet.
• Surge protection is recommended. Use DKS P/N 1878-010 or equivalent.
• Use only twisted pair wires for phone line wiring. 24 AWG for up to 800 feet; 22 AWG up to
1600 feet.
• Electric strikes, magnetic locks, etc., must be powered by a separate power transformer.
• Lobby panels are powered from a separate power transformer.
This telephone intercom system requires the use of RJ71C phone blocks. We recommend that you
have the local telephone company install these blocks for you. One RJ71C must be ordered for every
12 phone lines (or fraction there of) that the 1820 will interface with. Give the telephone company
plenty of advance notice of when you will need the blocks installed. You must complete the RJ71C
block identification form(s) in the back of this manual. This is very important as it instructs the phone
company installer how the phone lines should be wired to the RJ71C. Be sure that the phone
company installer labels the blocks. Each block should be numbered, and the telephone number and
apartment number should be written on the inside of the block cover (see example on page xx).
When the phone company installer has completed the RJ71C block identification form(s), attach the
form to the inside of the 1816 cabinet for future reference.
The RJ71C wiring configuration is not recognized by all telephone companies. For Bell Canada
(Ontario, Quebec), refer to CA-79X block for interconnection to the 1816 system. For BC Tel (British
Columbia), refer to BC Tel CRTC Spec 182 B5.
Lobby panels come with their own wiring diagrams. The only connection between the 1820 and the
lobby panel is a twisted pair telephone wire.
1820-065-B-2-06 Page 19