Earth Ground Connections; Determining The Control's Power Supply Load - Honeywell VISTA-32FBPT Installation And Setup Manual

• Use wires having insulation rated for at least 90°C operation and suitable for non-power limited applications.
• Use care to keep 18VAC wiring separated from all other wiring inside the control panel's enclosure. This must
be done by running non-power-limited 18VAC wiring into the control panel's enclosure via one of the knockouts
on the left-hand side, and then tie-wrapping these wires to the tie-wrap loops located near the knockout.

Earth Ground Connections

In order for the lightning transient protective devices in this product to be effective, the designated earth ground
terminal (terminal 30) must be terminated in a good earth ground. Recommended wire gauge for the ground connection
is #16 AWG, run no farther than 30 feet.
The panel requires the earth ground connection for its lightning transient protection devices and in order to detect
Ground Fault conditions.
To connect the earth ground, perform the following steps:
Step Action
1 Connect the earth ground post inside the 1451 enclosure to a good earth ground (use grounding methods
specified in the National Electric Code).
2 Use a green nut (supplied) to secure the wire to the ground post. The ground wire should be the only wire
under this nut.
3 Run a 16AWG wire from the ground post to the panel's earth ground terminal (30). Use a second green nut
(supplied) to secure this wire to the ground post.
This connection avoids ground loops that may occur when the 1451 and panel are connected to different earth
ground systems.

Determining the Control's Power Supply Load

In the event of an AC power loss the VISTA-32FBPT and the Commercial Fire Listed 24VDC Power Supply must be
supported by backup, rechargeable batteries. When the system is used without a Commercial Fire Listed 24VDC Power
Supply, a 12VDC, 12AH to 34.4AH battery must be connected the control panel.
For ULC Commercial Fire Installations, only the 34.4AH (2 x 17.2AH) batteries have been evaluated.
•
U LC
For ULC Commercial Fire Installations, the batteries' capacity must be sized for 24-hour Standby followed
•
by a 30 minute Alarm.
If a Commercial Fire Listed 24VDC Power Supply is used, refer to its Installation Instructions for the appropriate
backup battery requirements.
The battery's capacity must be sized to provide 24 hours (central station fire) followed by 5 minutes (fire only) or 15
minutes (fire and burglary) alarm time. Use only sealed lead-acid batteries with a minimum charging current handling
capacity of 1.8A.
Use the worksheets that follow to calculate the total current for Auxiliary Power 1, Auxiliary Power 2, Bell 1, Bell 2,
Polling Loop and the total current load of the control panel. In each worksheet, multiply each device's standby and/or
alarm current by the number of units used.
Then, if you are using a Commercial Fire Listed 24VDC Power Supply, calculate the Total 24VDC Power Supply Load
using the Power Supply's instructions, to determine the required capacity of the backup batteries that must be connected
If you are NOT using a Commercial Fire Listed 24VDC Power Supply, fill out the Battery Capacity Calculation
Worksheet, following the other worksheets below, to determine the required capacity for the backup battery. Select a
battery from the Battery Selection Table (found later in this section) that have a capacity greater than or equal to the
calculated capacity.
Battery Capacity must be able to satisfy the Standby and Alarm periods in the chart below dependant on Control Panel
usage.
Control Panel Use
Residential Burg
Commercial Burg
Commercial Burg – Bank Safe and Vault
Commercial/Residential Fire
Canadian Commercial Fire
Proprietary Burg Central Station Receiver
Standby Period
4 hours
4 hours
72 hours
24 hours
24 hours
24 hours
53
Alarm Period
4 minutes
15 minutes
15 minutes
5 minutes
30 minutes
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Battery Capacity*