LiftMaster EL25 EL25 Installation Ver. 3.0 Manual - Page 14

Wiring to Dedicated Telco Line NOTE: Installation where fiber optic phone lines are present may require additional modifications from your telephone provider. Contact your provider for more information. Single Unit Telco Entrance Box Demarcation Point Ring Tip Never run Telco wires and High Voltage wires in the same conduit. The high voltage wires may interfere with the Telco wires, possibly causing the system to malfunction. Use 18-24 AWG 2 twisted pair RES J6 Ring TELCO Tip J8 IO Output Board NO LED 4 J5 NC C RELAY 4 NO J4 NC LED 3 C RELAY 3 NO J3 NC C LED 2 NO RELAY 2 NC J1 C LED 1 RELAY 1 Wiring to Dedicated Telco Line Multiple Units (Up to 7) IMPORTANT: You must program the Unit ID's for each unit wired in the series. See Keypad Programming Manual. Telco Entrance Box Demarcation Point Ring Tip To next unit (Unit ID 5 then 4 etc.) Unit ID 1 is farthest away from Telco Box. Use 18-24 AWG 2 twisted pair Ring RES Tip J6 Ring TELCO Tip J8 Unit ID 6 Output Board (See page 6) Ring RES Tip J6 Ring TELCO Tip J8 Unit ID 7 Output Board (See page 6) IO Output Board IO Output Board NO LED 4 J5 NC C RELAY 4 NO J4 NC LED 3 C RELAY 3 NO J3 NC C LED 2 NO RELAY 2 NC J1 C LED 1 RELAY 1 NO LED 4 J5 NC C RELAY 4 NO J4 NC LED 3 C RELAY 3 NO J3 NC C LED 2 NO RELAY 2 NC J1 C LED 1 RELAY 1 Page 12