4: Installing 4-Wire Smoke Detectors - Honeywell 6820 Manual

Flexput I/O Circuits
Installing 2-Wire Class A Smoke Detectors
To install a Class A two-wire smoke detector, wire as shown below.
NOTE: In programming any point that uses multiple Flexput circuits, the lowest Flexput circuit number is used to refer to the circuit pair. For
example, Figure 4.49 uses both Flexput circuit 5 and 6, so in programming it would be referred to as point 5
4.17.4 Installing 4-Wire Smoke Detectors
Any compatible, UL-listed four-wire smoke detector can be used with the control panel. Refer to the Device Compatibility Document for a
list of devices. Figures 4.50 and 4.51 illustrate how to connect a UL-listed four-wire detector to the control panel.
Installing a Class B 4-Wire Smoke Detector
Figure 4.50 illustrates how to install a 4-wire Class B smoke detector.
Conventions used for wiring 4-wire Class B loops:
1. One Class B 4-wire smoke detector loops can be connected to the control panel.
2. The Class B loop input is paired with a unique power source as shown below.
3. The loop gets smoke power from the even numbered Flexput circuit and the contact input is connected to the odd numbered Flexput
circuit.
NOTE: In programming any point that uses multiple Flexput circuits, the lowest Flexput circuit number is used to refer to the circuit pair. For
example, Figure 4.50 uses both Flexput circuit 5 and 6, so in programming it would be referred to as point 5.
Installing 4-Wire Class A Smoke Detectors
Figure 4.51 illustrates how to install a 4-wire Class A detector. Conventions used for wiring 4-wire Class A loops:
1. One Class A 4-wire loop can be connected to the control panel.
2. The wiring class of the external power source must match the wiring class of the device being powered.
6820/EVS Manual — P/N LS10144-001SK-E:E 4/6/2022
supervised,
power limited
Figure 4.49 Two-Wire Class A Smoke Detector Connections
supervised,
power limited
Figure 4.50 Class B 4-Wire Smoke Detector Connections
Any 2-wire smoke detector listed in
the Device Compatibility Document
blue
orange
white
gray
ESL 449CT
Control Panel Installation
Air Products
PAM-2
Supervision
Module
53