P/N: 387463 REV: 4.0 27JUN07 Installation Sheet
2 / 3 3-ZA20A, 3-ZA20B, 3-ZA40A, 3-ZA40B - Zoned Audio Amplifiers
Wiring diagrams
Typical 25 or 70 Vrms notification appliance circuit wiring
TB1
Zone audio amplifier
+--
BACK-UP
+
NAC/BNAC/A
-
SS
-++
S S
UL/ULC
listed
EOL
[2]
Class A (Style Z)
Class B (Style Y)
[4] [5]
Figure-2: Typical 24 Vdc notification appliance circuit wiring
UL/ULC
LISTED
EOL
[2]
Class A (Style Z)
TB1
24VDC
NOTNOTNOT
24VDC
NAC/B
USEDUSEDUSED
NAC/A
Zone audio amplifier
+--+
Notes
1. All wiring is supervised and power-limited
2. Install listed 15k Ω resistor on last device only when wired as Class B (Style Y) riser
3. Polarity designations on connector indicate output signal polarity for circuit supervision. The polarity reverses in an alarm
condition.
4. Shield required when audio riser and telephone riser share the same conduit
5. Twisted pair not required only when audio circuit riser shares conduit exclusively with 24 Vdc riser or in conduit by itself
6. A maximum of 10 Signature Series CC1 or CC2 modules may be installed on the speaker circuit
7. For maximum wire resistance, refer to Appendix B in EST3 Installation and Service Manual (P/N 270380).
8. Synchronization of Genesis strobes is accomplished through the use of G1M, G1M-RM, SIGA-CC1S, and SIGA-MCC1S
modules. Refer to EST3 ULI/ULC Compatibility Lists (P/N 3100427).
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