Section 5: Audio Phone Circuit Installation; Maximum Number Of Devices; Wiring Requirements For The Audio Telephone Circuit; 1: Single Phone Jack Audio Circuit In Class B Configuration - Honeywell Farenhyt Series Manual

The IDP-FFT works with the FFT-FPJ Fire Fighters Telephone Jack.

5.1 Maximum Number of Devices

The IFP-FFT supports up to 72 zones. Each zone consists of one Addressable Monitor Module (IFP-MINIMON) and a minimum of one Fire
Fighter Telephone Jack (FFT-FPJ).

5.2 Wiring Requirements for the Audio Telephone Circuit

No special wire is required for the Audio Telephone Circuit. The wire can be untwisted, unshielded, twisted, or shielded as long as it meets
the National Electric code 760-51 requirements for power limited fire protective signaling cables.
54 Ohm maximum impedance - 12 to 18 AWG.
Twisted, shielded wire is recommended for maximum protection against EMI and AFI emissions and susceptibility.
If using shielded cable, attach the shield to grounding stud below TB6 of the IFP-FFT.
NOTE: Do not ground shield on both ends.
5.2.1 Single Phone Jack Audio Circuit in Class B Configuration
Figure 5.1 illustrates the single phone jack configuration wiring audio circuit and the SLC for Class B Configuration. The audio circuits must
be connected to the FFT phone out terminals for all Class B audio configurations.
IFP-FFT Manual — P/N 54708:B3 10/28/2021

Section 5: Audio Phone Circuit Installation

+ audio
- audio
+ SLC
- SLC
IFP-FFT
Figure 5.1 Single Phone Jack Audio Circuit Wired in Class B Configuration
connected
1 3
2 2
3 1
TB2
FFT-FPJ
ADDRESS
1 3
LOOP
2 2
ONES
TENS
IFP-MINIMON
3 1
TB2
FFT-FPJ
ADDRESS
1 3
2 2
LOOP
ONES
TENS
3 1
IFP-MINIMON
TB2
FFT-FPJ
ADDRESS
LOOP
TENS ONES
IFP-MINIMON
not connected
Figure 5.2 EOL Reference
Contact EOL Connected
(See Figure 5.2 for EOL reference.)
TB1
Do not loop wire under the terminals.
Break wire run to provide proper
supervision of communications.
TB1
TB1
4.7kΩ, 1/2 watt ELR
Install on the last device for
Class B telephone circuit only.
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