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in the gang box to the 3-wire terminals located on the
power supply PC board.
Maintenance
The GEMC-NACXX should be tested at least once a year
for proper operation as follows:
Output Voltage Test: Under normal load conditions, the
DC output voltage should be checked for proper voltage
levels.
Battery Test: Under normal load conditions check that
the battery is fully charged. Check the voltage at the bat-
tery terminal and at the board terminal marked [-BAT +] to
insure there is no break in the battery connection wires.
Note: Maximum charging rate is 1.50A, 1.72A or 1.96A,
depending on jumper setting. Expected battery life is ap-
proximately five years, however it is recommended
changing batteries in 3 years or less if needed.
Fuse
Battery fuse is a UL Listed fuse rated 250VAC / 12.5A. If
this fuse is blown, a battery trouble will be enunciated
(refer to LED Diagnostic Table). Contact service repre-
sentative for replacement or repair. CAUTION: For con-
tinued protection against risk of fire, replace only with
the same type and rating of fuse; see WI1653.
TERMINAL DESCRIPTIONS
1. (+) INPUT 1
2. (–) INPUT 1
Isolated positive and negative synchronization inputs
used to synchronize the output of Smart devices with the
"master device" driving the input (the "master device" can
be either the C-Series control panel or other NAC extend-
ers).
If synchronizing to the C-Series control panel, wire one of
the NAC outputs to the Input 1 terminal (maximum 1000'
wire length from GEMC control panel).
If synchronization to a different NAC extender, wire one of
the NAC outputs of this other NAC extender to the Input 1
terminal (maximum 1000' wire length from GEMC control
panel). If synchronization is not needed, do not wire to
these terminals.
Use PCD-Windows Quickloader ("External Output Assign-
ment") to program at least one of the 4 GEMC-NACXX
outputs as a "Smart" device. Any NAC "Smart" output will
now be synchronized Input 1 terminal with INPUT 1. (See
the Jumper "NAC OPTIONS" in the Jumper section).
3. (+) INPUT 2
4. (–) INPUT 2
Not used in this configuration.
5. (+) NAC 1
6. (–) NAC 1
7. (+) NAC 2
8. (–) NAC 2
9. (+) NAC 3
10. (–) NAC 3
11. (+) NAC 4
12. (–) NAC 4
Terminals 5 through 12 are NAC 24V, 2A regulated su-
pervised output terminals (terminal polarity is shown in
Gemini C-Series GEMC-NAC Extender Installation Instructions
when in an "active" alarm condition, polarity is reversed
from what is shown in "normal" standby mode). These
terminals are supervised outputs that provide low imped-
ance output to drive devices such as strobes, bells and
horns on any programmed event. In addition, these out-
puts can be used as Auxiliary outputs by programming
them for Reverse Polarity (and no triggering event).
13. (COM) OUT RELAY 5
14. (NC) OUT RELAY 5
15. (NO) OUT RELAY 5
16. (COM) OUT RELAY 6
17. (NC) OUT RELAY 6
18. (NO) OUT RELAY 6
Terminals 13-18 (and 26-28) are fully programmable re-
lays.
Each relay can be programmed, using PCD-
Windows Quickloader, to be triggered on any event. In
addition, the output can be programmed for Reverse Po-
larity causing them to be normally energized, and thus de-
energized during a programmed event.
19. (+) REM (FIRE BUS)
20. (–) PWR (FIRE BUS)
21. GREEN (FIRE BUS)
22. YELLOW (FIRE BUS)
Isolated 4-wire bus terminals wired from the Gemini C-
Series control panel terminals 18-21 (maximum 1000' wire
length from GEMC control panel).
23. (+) TAMPER
24. (–) TAMPER
Housing tamper terminals. Used with a zone dedicated to
"Tamper" within the integral 4-Zone EZM; when a tamper
is detected, a report will be sent to the control panel as the
3rd zone of the EZM through the 4-wire fire bus. Use
front and back housing tamper switches, normally open
when not installed, normally closed in the circuit, and
open when activated (we recommend using a GEMC-
TAMPERKIT).
Note: The activation of Tamper is reported to the panel
using the 3rd zone of the NAC integral EZM; program the
integral EZM using the Quickloader EZM Assignment
screen and Zone Assignment screens, as shown in the
section "PROGRAMMING", as follows:
Program Zone three of the EZM (Zone # = 8 + 4
(EZM#-1) + 3) for the following:
a. Description line 1: "Tamper...OUTPUT BOARD
XX" where XX = Output board address;
b. Zone Type "Fire Tamper Monitor";
c. Adv. Code "Fire Tamper Monitor";
d. Area 1.
Note: Tamper can be disabled by not programming the
associated zone for Area 1 (Fire), thus leaving the zone
undefined with no area assigned.
25. (–) EARTH GND
This terminal is not required to be connected to earth
ground. The panel earth ground connection is provided
via the 110V ground connection to the housing through
the mounting brackets. This terminal is available for fu-
ture use.
This terminal can also be used to confirm the operation of
5
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