NAPCO Gemini GEM-X255 Installation Instructions Manual page 46

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Page 46
Smoke Detectors
Connect smoke detectors as shown in the following diagrams. The normally-closed contacts of the Reset Relay are used to reset
the smoke detectors.
Two-Wire Smoke Detectors. Two-wire smoke detectors may be connected to zones 1-8 on the control panel. Up to 10
compatible 2-wire smoke detectors may be wired to each zone. In Residential applications, program Pulse Burg Output. Program
Disable Fire Reset in the applicable area(s).
Zones 7 and 8 have been designed so they can be easily configured as 2-wire smoke detector zones by means of jumpers (JP7)
located above Terminal 21.
1. Program Zones for 2-Wire Smoke Detectors and Fire.
2. If Zone 7 is selected as a 2-Wire Fire Zone, move the left jumper on JP7 from the top two pins (BURG) to the bottom two pins
(2WF).
3. Similarly, if Zone 8 is selected as a 2-Wire Fire Zone, move the right jumper on JP7 from the top two pins (BURG) to the bottom
two pins (2WF).
4. Connect 2-wire smoke detectors to Zones 7 and/or 8 as shown.
Connecting 2-wire smoke detectors to zones 7 & 8
Four-Wire Smoke Detectors. If installing 4-wire smokes, subtract smoke-detector alarm current from available standby current.
See COMPATIBLE UL-LISTED DEVICES.
Wire 4-wire smokes as shown in the following wiring diagram. Program each zone for Fire. Also program zones for Pulse Burglary
Output, and Disable Fire Reset in the applicable area(s) (System Options). If they are of the self-resetting type, 4-wire smokes may be
powered from Terminals 13 and 14 (AUX. PWR.) instead of Terminal 28 and 29, thus freeing the Reset Relay for other uses.
X
GEM-X255 Installation Instructions
Additional 4-wire smokes
Wiring diagram, 4-wire smoke detectors
Where more than two 2-wire smoke detector zones are
required, select any of Zones 1–6 for 2-wire fire as follows:
1. Program the selected zone(s) (1–6) for 2-Wire Smoke
Detectors and Fire.
2. Cut out the 2700W resistor (color code: red/violet/red)
associated with the selected zone(s). See table
below.
ZONE RESISTOR
1 R1
2 R2
3 R3
4 R4
5 R5
6 R6
3. Install a 130W resistor (Napco Part No. EOL130; color
code: brown/orange/ brown), 3 watts, across the two
terminals of each selected zone.
4. Wire the positive (+) terminal of the smoke detector to
Terminal 28. Wire the negative (–) terminal of the
smoke detector to the positive terminal (+) of the
zone.
(SEE PAGE 17 FOR ADDITIONAL WIRING INFORMATION)
L
WI1093A 12/01
LOCATION ON BOARD
ABOVE TERMINAL 18
ABOVE TERMINAL 18/19
ABOVE TERMINAL 19
ABOVE TERMINAL 20
ABOVE TERMINAL 22
ABOVE TERMINAL 23
NAPCO Security Systems