2 Gemini C-Series GEMC-NAC Extender Installation Instructions
●
The maximum number of GEMC-NACXX's can be used
on a Gemini C-Series control panel is five (5), thus allow-
ing for a maximum of 20 additional NAC circuits
●
Surface/semi-flush cabinet included
●
Automatic switchover to stand-by battery when AC Fails
●
When configured for 24V Auxiliary Power, it is a Special
Application output only listed with the GEMC-24VR. The
GEMC-24VR output is Regulated 24VDC, 1A maximum.
SPECIFICATIONS
Electrical Ratings
Input Power:
Primary input power:
120VAC, 50/60Hz, 3A, maximum
15A dedicated branch circuit.
Secondary power:
24V operation, up to eight 12V /
7AH / 7.5AH / 8AH batteries in pairs (7AH-32AH
standby).
Fire Bus Input Power Rating:
12.0V Nominal, 8mA.
Output Power:
Total Output Power:
24VDC, 7A maximum, power lim-
ited outputs. Each NAC circuit output rated @ 2A maxi-
mum.
Optional Auxiliary Output Power:
2A maximum per cir-
cuit in alarm; 1.1A @ 24V maximum standby current
(depending on batteries utilized) for 24 hours. Any of the
4 NAC's can be used for auxiliary outputs by program-
ming the output with the feature "Reverse Polarity" (see
the "
NAC/Output Assignment
" screen in PCD-Windows
Quickloader software). Auxiliary power is 24V Special
Applications for use with the GEMC-24VR; these auxiliary
outputs are then 24V Regulated.
Supervision:
●
AC fail supervision local annunciation, approximate 1
minute delay to prevent nuisance swingers
●
Battery presence, low battery supervision and battery
charger voltage supervision; combined to generate a
common battery trouble
●
Remote bus supervised for opens, shorts or ground faults
Additional GEMC-NACXX Specifications:
NAC End-of-Line Resistor:
2.2K ohms (NAPCO
EOL2.2K).
Common Trouble Relay ("Out Relay 5"):
30VDC @
1A, 30VAC @ .5A Resistive, connect to power limited cir-
cuits only.
Common Trouble Relay ("Out Relay 6"):
30VDC @
1A, 30VAC @ .5A Resistive, connect to power limited cir-
cuits only.
Common Trouble Relay ("Out Relay 7"):
10A /
120VAC; 2.5A / 30VAC / DC Resistive Load.
Input control circuit:
10-30VDC @ 20mA maximum.
Operating Temperature:
32°F to 120°F (0°C to 49°C).
Operating Humidity:
Maximum 85% relative humidity @
30°C.
Housing
The GEMC-NACXX comes complete with 7A power supply,
enclosure and ample room for standby batteries. Two mod-
els are available, as determined by the size of the enclo-
sure:
Enclosure Dimensions (W x H x D, Inches):
•
The
GEMC-NAC7S
uses the small housing with suffi-
cient room for two pair of 12V standby batteries (model
GEMC-HSKIT1416
, size 14.25" x 16" x 5.25")
•
The
GEMC-NAC7L
uses the large housing with room
for four pairs of 12V standby batteries (model
GEMC-
HSKIT1425
, size 14.25" x 24" x 5.25")
Programming
When used with a Gemini C-Series control panel, the
GEMC-NACXX must be programmed using PCD-Windows
Quickloader download software, and the GEMC-NACXX
PC board must be configured correctly with its jumper op-
tions. For Programming, turn to page 6.
AGENCY LISTINGS:
●
UL Listed Control Units and Accessories for Fire Alarm
Systems (UL864 9th edition)*
●
CSFM -
California State Fire Marshal
Approved*
●
NFPA 72 compliant
*pending
#
Name
Description
(Patterns repeat until condition is
cleared)
00
Constant
Continuous Sound
(
Note:
This is the only pattern that can
be used for relay circuits).
01
March Code
02
ANSI 3.41
03
Single Stroke
04
California
C-Series Programmable Cadence Options
5 seconds on
5 seconds on
5 seconds on
10 seconds off
.5 seconds off
1.5 seconds off
.5 seconds on
1 second off
3 seconds off
.1 seconds on
.5 seconds on. 5 seconds off
GEMC-Series NAC Maximum Line
Impedance: 1.8 ohms
AWG
RESISTANCE
/1000 FEET
DISTANCE
WITH 2A
LOAD
(FEET)
DISTANCE
WITH 1A
LOAD
(FEET)
DISTANCE
WITH 500MA
LOAD
(FEET)
18
6.6
125
250
500
16
4.2
200
400
800
14
2.6
325
650
1300
12
1.7
500
1000
2000