6.1.1.2 Four wire base wiring
For four-wire wiring application, use 4098-9682 four-wire base with the following detectors:
• 4098-9601
• 4098-9602
• 4098-9605
• 4098-9612
• 4098-9613
• 4098-9614
• 4098-9615
When you use the 4098-9682 base, you need to route the auxiliary 24 V power through the 2098-9735 end-of-relay, as shown in Figure 13.
Figure 13: Four wire base wiring
Note:
• Only use the Aux-2 resettable Aux power circuit.
• Only use four-wire base wiring in Class B wiring style.
6.1.2 IDC wiring specifications
• The maximum wiring resistance for each circuit is 50 ohm.
• Suggested wire is 18 AWG, allow up to 3500 ft. distance from the control unit to the EOLR Class B.
• The maximum detector standby current for each IDC is 3 mA.
• The maximum detector alarm current for each IDC is 75 mA.
• The maximum ripple for each IDC is 2V peak to peak for a voltage range of 15VDC to 30VDC.
• The maximum circuit capacitance for each IDC is 100 μF.
page 21 579-1402 Rev B
2004 Foundation Series Fire Alarm Control Unit Installation Guide
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