6 Product description
This section contains the product description of the 2004-9101 control unit and a list of compatible devices.
6.1 Initiating Device Circuits
The 2004-9101 control unit is compatible with the following different types of conventional initiating devices:
• Photoelectric smoke detector
• Heat detector
• Combination photo and heat detector
• Manual pull station
Refer to the Two-Wire Detector Compatibility Chart 579-1417 for more details.
6.1.1 Wiring IDCs
To wire IDCs, ensure you adhere to the following guidelines:
• All wiring is between 18 AWG minimum and 12 AWG maximum.
• Conductors test free of all grounds and stray voltages before attempting to connect to appliances and devices.
• All wiring is supervised and power-limited.
• Leave the supplied 3.3 k, 1/2 W resistor across all unused IDC terminals.
• Terminate Class B circuits with UL listed 3.3 k, 1W end-of-line resistor harness, part number 0733-893.
Note: In case of retrofit applications, the IDC Class B circuit can additionally support 4.7 k EOL. You are not required to make a selection.
Use UL listed 4.7 k EOLR harness 0733-896 or any other 4.7 k UL listed EOLR.
6.1.1.1 Wiring Class B IDCs
To wire a Class B IDC, complete the following steps:
1. Route the wire from the - IDC1 + terminals of the system board to the appropriate inputs on a peripheral initiating appliance.
2. Route the wire from the first appliance to the next. Repeat this step for each appliance.
3. Route the wire from the last appliance to the 3.3 k, 1 W end-of-line resistor harness 0733-893. Use UL listed 4.7 k EOLR harness
0733-896 or any other 4.7 k UL listed EOLR.
4. Do not T-Tap the wiring.
Figure 12: Class B wiring
page 20 579-1402 Rev B
2004 Foundation Series Fire Alarm Control Unit Installation Guide
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