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FIGURE 10
SIMPLIFIED SINGLE LINE BLOCK DIAGRAM
WIRING INSTRUCTIONS (SEE FIGURE 11)
1.
Make sure 24VDC power supply is disconnected from the 115VAC power source.
2.
Connect tip and ring from:
A. Stand along telephone, or
B. Telephone system's unused CO line/trunk port, or
C. Telephone system's 600 ohm, audio page port (See Figure 12), or
D. Wheelock TPI-100 Interface for CO/Centrex line or analog station level line (See Figure 13),To TB1 terminals 4 and 3 respectively, on the
ZC-312.
3.
Connect the background music source to TB1, terminals 9 and 10, on the ZC-312.
4.
Connect the 24VDC power supply to the (-)24V and GND(+) terminals on TB1, terminals 2 and 1 respectively.
5.
Connect the zone amplifier, speaker amplifiers, or speakers with transformers to the audio pair for zones 1 thru 12 on TB2 of the ZC-312 and TB1
of each ZEM-3 module as required.
6.
If one Central Amplifier is used for paging and background music:
A. Connect the input of central amplifier to AMP1 OUT, terminals 11 and 12 of TB1 on the ZC-312. Connect the output of central
amplifier to AMP1 IN, terminals 13 and 14 of TB1 on the ZC-312.
B. Connect the output of central amplifier to MUSIC, terminals 7 and 8 of TB2 on ZC-312 and TB1 on ZEM-3 modules, as required.
7.
If separate central amplifiers are used, one for paging and one or more for background music:
A. Connect paging amplifier as described in 6A, above.
B. Connect output of background music amplifier(s) as described in 6B, above.
8.
Connect the 24VDC power supply to the 115VAC source.
NOTE
When only one central amplifier is used, background music will be muted in all zones when a page is in progress. When separate central amplifiers are
used, background music will be muted in only the paged zone.
P81982 K
Sheet 16 of 21
PROGRAMMING INSTRUCTIONS (SEE FIGURE 11 OR INSIDE OF ZC-312 COVER)