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Notes:
1. The Auxiliary Power Output current value stated is the maximum allowable sum total of both the Resettable and Non-
resettable Auxiliary Power Outputs. Include the RDUs only if their 24 Vdc Power is drawn from the Auxiliary Power
Output Circuits on the MCP/RHU. If the RDUs are powered by the MCP/RHU, reduce the power available from the
Auxiliary Power Output (for other purposes) by 25 mA Standby and 35 mA Alarm per RDU.
2. The Programmable Relay is applicable only to the MCP and not to the RHU. This relay should only be included if it is
energized on alarm.
3. The current value stated for the ORB Relays is for each individual relay when energized. The ORB can have a
maximum of five relays.
4. Standby currents should be considered for all Ionization, Photoelectric, Duct and Heat Detectors on the two Detection
Circuits. However, since only one detector can be in Alarm, the Alarm current should only be considered for the entire
Detection Circuit.
5. The current value stated for the Sounder Circuits is the maximum total for both circuits. Refer to Note 7 below.
6. The MCP Agent Release Circuit can have a maximum of three continuous release solenoids, that is a maximum
current draw of 1200 mA, while the RHU Agent Release Circuit can have a maximum of two continuous release
solenoids or a maximum draw of 800 mA.
7. Since the Power Supply of the Kidde Gemini II unit is rated at 4.0 Amps, the system designer should ensure
that the system circuits are loaded so as to keep the calculated total alarm current equal to or less than 4.0
Amps.
8. The current values indicated for the ULI/ULC MCP include the additional standby current required by the LED drivers
and the Alarm Current required by one LED Display Module.
9. A maximum of two additional LED Display Modules may be installed on the ULI/ULC MCP.
November 2002
Table A-3. Standby and Alarm Calculation Guide
A-3
firealarmresources.com
Kidde Gemini II System
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