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Kidde Gemini II System
7-3.3
Hazard Block Installation Procedures
7-3.3.1
INPUT DEVICE CONNECTION
Field devices such as Smoke Detectors, Waterflow
Switches, Sprinkler Supervisory Switches and Manual Re-
lease and Abort Stations connect to TB5 (see Appendix E)
for the MCP and RHU respectively. Manual Release and
Abort Switches must be UL Listed to UOXX Control Unit
System Accessories.
For the two Detection Zones and the Waterflow Circuit, the
wiring style i.e., Class A Style D or Class B Style B is de-
fined by shorting links W101 and W104 respectively. Refer
to Figures 7-2 and 7-3 for the location of the shorting links
on the MCP and RHU printed circuit board (see Appendix E
for their configuration).
Note:
The Abort Input Circuit can be configured as Su-
pervisory Circuit # 2.
7-3.3.2
RELAY OUTPUT CONNECTION
The MCP provides relay outputs for auxiliary functions such
as HVAC, fan shutdown, etc. The connection cables to the
output devices is to be run from TB4. Route each connec-
tion cable to the terminal block and tighten the slot screws
firmly. Refer to Figure 7-2 and 7-3 for location of the termi-
nal block on the MCP and RHU respectively.
7-3.3.3
INDICATING CIRCUIT CONNECTION
The MCP and RHUs provide two each Indicating Circuits
labeled Sounder 1 and Sounder 2 on TB6 for audible and
visual indicating devices.
For Sounder 1 and Sounder 2, the Wiring Style i.e., Style Y
or Style Z is defined by shorting links W108 and W109 re-
spectively. Refer to Figures 7-2 and 7-3 for the location of
the shorting links on the MCP and RHU printed circuit board
(see Appendix E for their configuration).
7-3.3.4
RELEASE CIRCUIT CONNECTION
The MCP and RHUs provide output signals to activate so-
lenoids to effect agent release. The connection cables to
the output devices is to be run from TB6. Route each con-
nection cable to the terminal block and tighten the slot
screws firmly. See Appendix E for location of the terminal
block on the MCP and RHU respectively.
The Agent Release output can supervise and drive the fol-
lowing 24 Vdc Solenoids:
•
One Kidde Control Head, or,
•
Two Kidde Control Head, or,
•
One or two Kidde Control Heads plus one Kidde Stop
Valve
•
One FM Deluge/Pre-Action solenoid, or,
•
One Kidde Control Head plus one FM Deluge/Pre-Ac-
tion solenoid
06-235975-001
The following 24 Vdc Solenoids are approved/listed to be
operated by the Gemini II in the configurations listed above:
•
Kidde Control Head Solenoid P/N 890181
•
Kidde Control Head Solenoid P/N 899175
•
Kidde Control Head Solenoid P/N 48650001
•
Kidde Control Head Solenoid P/N 81-100000-001
•
FM Deluge/Pre-Action Solenoid Group A
•
FM Deluge/Pre-Action Solenoid Group B
•
FM Deluge/Pre-Action Solenoid Group D
•
FM Deluge/Pre-Action Solenoid Group E
•
FM Deluge/Pre-Action Solenoid Group G
Notes on the 24 Vdc Release Circuit:
1. P/N 48650001 is a polarized control head. Improper
wiring will result in failure of the device to operate. P/N
899175 is non-polarized.
2. When configured for Kidde Solenoids, the release cir-
cuit will activate for 90 seconds. At the end of the 90
seconds, the output will de-energize. When configured
for sprinkler release, the solenoid on time is 10 min-
utes, 15 minutes or on-until-reset.
3. When resetting an alarm condition, the reset switch on
the front panel should be depressed and held for one
second to ensure the smoke detector resets.
Before installing a control head on any cylinder
valve, ensure the control head is in the SET
position (that is, the actuating pin or plunger is
in the fully retracted position) to prevent
accidental discharge of agent.
Electric control head P/N 48650001 is designed
for installation on a 487 or ECS series control
head only. Installation of this control head to
any other device (such as a pressure operated
control head) will result in failure of the device
to operate when the control head is actuated.
All solenoid control heads must be removed
from the cylinders prior to testing to prevent
accidental cylinder discharge.
7-3.3.5
The Data Communication between the MCP, RHUs and
RDUs is via a 2-Channel RS-485 network using a 24 AWG
twisted pair cable (preferably shielded) with a shunt capaci-
tance of 16 pF per foot and 100 ohms characteristic imped-
ance and a maximum length of 4000 feet (1219 meters)
per Channel.
Use the following steps to establish Data Communication:
1. The first step is to define the first (which will always be
the MCP) and the last unit on the network. To define
the MCP as the first unit, short pins 5 to 6 and pins 7 to
7-10
firealarmresources.com
!
CAUTION
RS-485 DATA COMMUNICATION
November 2002
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