LiftMaster EL25 EL25 Installation Ver. 3.0 Manual - Page 22

Wiring Power to the Unit Wiring Power to the Unit The 110 VAC outlet must be dedicated to the unit ONLY. This outlet should be wired back to its own 10 Amp minimum circuit breaker. This will prevent two problems: • Other equipment cannot introduce spikes, noise, surges or dips into the power circuit. • The system's operation will not be affected if any other equipment develops a short circuit across the power line. Connect the transformer into a 110 VAC outlet after all connections have been made. Any other type of outlet will cause damage to the system. EL Series Unit MUST be Properly Grounded! See Page 8. J7 Input Board (See page 6) AC Power 12 Vac or 16 Vdc 110 Vac Dedicated Outlet Refer. Bus 1, 2, 3 Conference Rm 2, 3 Conference Room 1 Conference Room 2 Comp. Serve 2 Air (2) Conditioner Comp. Serve 1 Off Off Off Off O n On Off O n On Air (1) Conditioner Main Room EL Model Off Eug. Rm Oper. Rm Eug. Dept. Manu. 1 Rm Off Dedicated 10 Amp Minimum Circuit Main Dept. Manu. 2 Rm J6 POSTAL J3 AUTO J5 J2 J1 POWER 12VAC/DC J4 IO Input Board Polarity Does Not Matter (See table on page 7 for AWG) Page 20