Chamberlain EL2000 - Manual (Page 22)

Page 20
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.
IO Input Board
J2
J3
J5
J7
J6
J4
POSTAL
AUTO
J1
POWER
12VAC/DC
OffOff
OffOff
OnOn
OnOn
OnOn
OffOff
Of
f Off
OffOff
OnOn OffOff
OffOff EL Model
Main
Room
Eug. Rm
Oper. Rm
Eug. Dept.
Manu. 1 Rm
Main Dept.
Manu. 2 Rm
Air (1)
Conditioner
Air (2)
Conditioner
Conference
Room 1
Conference
Rm 2, 3
Refer.
Bus 1, 2, 3
Conference
Room 2
Comp.
Serve 2
Comp.
Serve 1
Polarity Does Not Matter
(See table on page 7 for AWG)
Dedicated 10 Amp
Minimum Circuit
AC Power
12 VAC or 16 VDC
110 VAC
Dedicated Outlet
EL Series Unit
MUST be
Properly
Grounded!
See Page 8.
Input Board
(See page 6)