1-4
06-235975-001
November 2002
Kidde Gemini II System
1-4.3.1
INITIATING CIRCUITS 1 AND 2
Two detecting circuits are provided; each can power and
supervise up to 40 conventional Fenwal point-type smoke
detectors and normally open contact closure devices. The
number of contact closure devices is limited only by the
total line resistance allowed. Both circuits can be reset with
the
RESET
button on the front of the Main Control Panel
which removes power for at least one second to allow the
detectors to reset.
1-4.3.2
WATERFLOW CIRCUIT
The waterflow circuit accepts input fromand provides
power toan external waterflow sensor which indicates that
a fire-activated sprinkler nozzle has been activated.
1-4.3.3
SUPERVISORY INPUT (SUPV 1)
The Supervisory Circuit is used to accept inputs from moni-
toring devices such as Agent pressure switches on Agent
Cylinders or water pressure switches on Sprinkler Systems.
For systems where two supervisory inputs are required,
the Abort Circuit, described in Paragraph 1-4.3.5, may be
configured as a second Supervisory input.
1-4.3.4
MANUAL RELEASE INPUT
An input signal from a manual release switch starts the
manual release sequence. After the specified time delay,
agent release output and indicating circuits are activated.
1-4.3.5
ABORT/SUPV 2 INPUT CIRCUIT
A signal from the abort switch starts the abort sequence,
which delays or cancels agent release (see Paragraph 3-3
for more on Abort).
For systems in which the Abort circuit is unutilized, it may
be configured as a second Supervisory Circuit. When con-
figured as a Supervisory circuit, this circuit operates in ex-
actly the same manner as the Supervisory Circuit described
in Paragraph 1-4.3.3.
1-4.4
Hazard Block Outputs
1-4.4.1
RELEASE OUTPUT CIRCUIT
The release output circuit controls the release of a fire sup-
pressing gas and/or activates a Deluge/Pre-Action system.
The release output is supervised for open circuit and can
drive either:
(a) One or two ganged Kidde Solenoid Control Head P/Ns
890181, 899175, 48650001 or 81-100000-001, or
(b) One or two ganged Kidde solenoid Control Head P/Ns
890181, 899175, 48650001 or 81-100000-001 plus one
Stop/Directional Valve Control Head for Systems using
Clustered Agent Cylinders (a common cylinder bank
protects multiple hazards and Stop Valves direct Agent
to the affected area), or
(c) One Factory Mutual Group A, B, D, E or G Deluge/Pre-
Action solenoids or,
(d) One Kidde solenoid Control Head P/N 890181, 899175,
48650001 or 81-100000-001 in conjunction with one
FM Group A, B, D, E or G solenoid for operation of a
Clean Agent Suppression system along with a Deluge/
Pre-Action System.
The release circuit may be programmed for a solenoid ON
time of 90 seconds for Kidde Control Heads and either 10
minutes, 15 minutes or On-until-reset for Deluge/Pre-Ac-
tion Solenoids.
1-4.4.2
RELAY OUTPUT (MCP ONLY)
Three Form C primary relay output circuits can be used to
control building functions such or shutdown power during a
fire.
1. Alarm Relay:
Normally de-energized. This relay is energized when
any alarm, a manual pull or waterflow event occurs any-
where in the system. Once activated it is latched until
the system is reset.
2. Trouble relay:
Normally energized. This relay is de-energized when-
ever a Trouble (not supervisory) alarm occurs anywhere
in the system. This relay is momentary; when the trouble
is resolved, the relay is energized again.
3. Programmable relay:
Normally de-energized. This relay can be programmed
to activate and latch on the occurrence of one of the
following conditions anywhere in the System:
(a) A global 1
ST
Alarm condition.
(b) A global Pre-Discharge condition.
(c) A global Discharge condition.
(d) A global Manual Release Input.
(e) A global Waterflow Input.
(f) A global Abort Input.
(g) A global Supervisory Input.
(h) A global Trouble event.
For contact ratings of all three relays, see Tables 1-1, 1-2
and 1-3.
1-4.4.3
OPTIONAL RELAY BOARD (ORB)
A socket is provided in the Main Control Panel and Remote
Hazard Unit for an Optional Relay Board. ORBs have five
programmable Form C Relays, each of which can be con-
figured to respond to one of the following events occurring
local to the unit that the ORB is mounted on:
(a) A local 1
ST
Alarm condition.
(b) A local Pre-Discharge condition.
(c) A local Discharge condition.
(d) A local Manual Release Input.
(e) A local Waterflow Input.
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