Using The 7644-L8 Module - Honeywell 6808 Installation And Operation Manual

4. Program the NAC circuit used as continuous and non-silencing. Refer to Section 9.5 for point programming, Section 9.4 for group
settings, and Section 9.3 for zone settings and mapping.If necessary, adjust loop current using the potentiometer (R10) on the 5220
board. Normal loop current is 2-to-8 mA with a 1k ohm remote station protected premise unit. Maximum loop resistance is 3k ohm.

Using the 7644-L8 Module

When the 7644-L8 is used for polarity reversal, it allows alarm and trouble events to be reported to a remote site. Alarms will override
trouble conditions and it will not be possible to reset the remote indicator until the condition is cleared and the control panel is reset.

To install the 7644-L8 for polarity reversal:
1. Wire the 7644-L8 to the control panel as shown in Figure 4.46. Do not install an EOL resistor on the terminals of the NAC circuit
used.
NOTE: Use only NAC circuits on the control panel for reverse polarity.
2. Program the NAC circuit as a notification circuit. See Section 9.5.1.
3. Map the group to activate constant on from the zone event.
6808 Manual — P/N LS10146-001SK-E:C 09/28/2017
Figure 4.45 Polarity Reversal Connection Using the 5220 Module
Note:
NAC circuit 2 and Relay 1
used as examples. Any
NAC circuit and either
relay 1 or relay 2 could
be used.
Intended for connection to a Polarity
Reversal circuit of a Remote Station
receiving unit having compatible
ratings.
Control Panel Installation
53