4. Connect the 24VDC power supply to the (-)24V and GND(+) terminals on TB4, terminals 4 and 3 respectively.
5. Connect the zone amplifier, speaker amplifiers, or Wheelock Talkback Module audio pair for zones 1 thru 9 to their respective terminals on TB1,
TB2, and TB3. If any zones are equipped with a Wheelock Talkback Module, then connect the Inhibit (INH) terminals for those zones. If the ZC-9
and Wheelock Talkback Modules use separate power supplies, then also connect the ground (GND) terminals for those zones.
6. If Central Amplifiers are used:
A. Connect the input of central amplifier 1 (page/background music) to A1 OUT, terminals 5 and 6, on TB5. Connect the output of central
amplifier 1 to A1 IN, terminals 1 and 2, on TB5.
B. Connect the input of central amplifier 2 (background music) to A2 OUT, terminals 7 and 8, on TB5. Connect the output of central amplifier 2
to A2 IN, terminals 3 and 4 on TB5. See Note.
7. Connect the 24VDC power supply to the 115VAC source.
NOTE
The use of central amplifier 2 is optional. If only central amplifier 1 is used, background music will be muted in all zones when a page is in progress. If
both central amplifier 1 and central amplifier 2 are used, background music will be muted in only the paged zone.
PROGRAMMING INSTRUCTIONS (SEE FIGURE 7 OR INSIDE OF ZC-9 COVER)
1. Set the three "Zone Amplifier/Central Amplifier" select switches for each of groups 1, 2, and 3 as required. See switch symbol 1 . If a group is
using a zone amplifier, speaker amplifiers, or Wheelock Talkback Modules, then slide that group's switch to the left. If a group is using a central
amplifier, then slide that group's switch to the right.
2. Set the "Central Amplifier Select Switch" as required. See Switch symbol 2 . If one central amplifier is used for both paging and background
music, then the switch should be in the up position. If two central amplifiers are used, one for paging and one for background music, then the
switch should be in the down position. If central amplifiers are not used, then the switch may be in either position.
3. Set the three "Background Music Select Switches" for each of groups 1, 2, and 3 as required. See switch symbol 3 . If background music is
required in a zone group, then that group's switch should be in the up position. If background music is not required in a zone group, then that
group's switch should be in the down position.
4. Set the nine "One-Way/Talkback" select switches for each of zones 1 thru 9, as required. See switch symbol 4 . If a zone is equipped with
Wheelock Talkback Paging Modules, then that zone's switch should be in the up position. If a zone is equipped for one-way paging, then that
zone's switch should be in the down position. NOTE
: All zones in groups using (selected for) central amplifiers, are one-way paging zones.
Hence the individual zone switches should be in the down position.
P81835 E
Sheet 8 of 12
(6 paginas)
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