Instruction manual

3-9
! Caution:
Amplified Speaker Notification Appliance Power Output Wiring
Wire gauge selection for the amplified speaker notification appliance power output should involve
consideration of all factors including wire loop length, maximum current draw of each appliance,
number of appliances, and maximum voltage drop allowable.
• The Speaker Amp (SPK AMP) output is rated for 24 VDC, 2.0 amps maximum.
• The output meets Class B supervision requirements for notification appliance
circuits.
• The amplified speaker output is 15 Ohms, -5dBm maximum.
• Each output circuit shall have a UL LISTED, 10K Ohm EOLR resistor (1W)
installed across the last appliance. All unused outputs shall have a UL LISTED,
10K Ohm EOLR resistor (1W) across the output terminals. Each amplifier module
contains the required number of EOLRs for the supervised outputs. If more are
needed, recommend using Wheelock, Inc. End of Line Resistor Kit (Model
Number EOLK, Part# 5076), which contains Eight (8) UL LISTED 10K Ohm 1W
resistors.
Wiring Diagrams for Audio and “SPK AMP” Portions of Self-Amplified Audio/Visual
Notification Appliances
+
_
UL LISTED 10K
END OF LINE
RESISTOR
+
_
UL LISTED 10K
END OF LINE
RESISTOR
AUDIO
SPKR
AMP
Figure 3-8
Wiring Diagram for Audio Notification Appliances
in Amplified Speaker Applications
Do not loop wire under terminals. Break wire run to provide supervision of
connection
.
+
_
UL LISTED 10K
END OF LINE
RESISTOR
+
_
UL LISTED 10K
END OF LINE
RESISTOR
AUDIO
SPKR
AMP
+
_
STROBE
UL LISTED 10K
END OF LINE
RESISTOR
Figure 3-9
Wiring Diagram for Combination Audio/Visual Notification Appliances
for Amplified Speaker Applications