2: Conventional Input Switch Circuits - Honeywell 6820 Manual

Flexput I/O Circuits
2. Configure the circuit for Class A in programming (see Section 8.5).
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 4.45 uses both Flexput circuit 1 and 2, so in programming, these would be referred to as point 1.
Maximum voltage drop is 3V per Class A circuit. See Table 4.7.
4.17.2 Conventional Input Switch Circuits
This section of the manual explains how to install conventional initiating devices for Class A or Class B configurations.
Class B Inputs
You can connect conventional Class B switches, such as waterflow switches and pull stations, directly to the Flexput circuits of the control
panel.
To install a Class B switch, do the following.
1. Wire the Class B switch as shown in Figure 4.46.
2. Configure the circuit through programming (see Section 8.5).
6820/EVS Manual — P/N LS10144-001SK-E:E 4/6/2022
Figure 4.45 Class A Notification Appliance Circuit Configuration
Current
1.0A
1.5A
2.0A
2.5A
3.0A
Table 4.7 Maximum Impedance Class A
Figure 4.46 Class B Input Switches
Alarm Polarity Shown
Regulated, 24 VDC Full Wave Rectified circuits.
Rated at 27.4 VDC, 3A per circuit, 6A max total.
supervised, power-limited
Maximum Impedance
3Ω
2Ω
1.5Ω
1.2Ω
1.0Ω
EOL 4.7 kΩ
supervised,
power-limited
Control Panel Installation
51