Honeywell VISTA-250FBPT Installation And Setup Guide

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The total control panel standby load must be limited to 919mA for 24-hour standby time using two 12V, 17.2AH
batteries connected the Power supply. If you are using a Commercial Fire Listed 24VDC Power Supply use the
worksheet supplied with the power supply to determine the correct battery size.
Determining the Size of the Standby Battery
For burglary installations requiring 4-hour standby time followed by 15-minutes alarm time, use a 12AH battery to
support all loads up to and including the maximum system load (e.g., 1.3A standby/2.8A alarm total control panel load).
For fire installations requiring 24-hour standby time, use the worksheet below to calculate the required battery capacity.
7. Use Worksheet 7 to determine the required backup battery capacity and use The Battery Selection Table to
determine the battery model number. A dual battery harness is supplied that allows two batteries to be wired in
parallel for increased capacity.
Using the total calculated from Worksheet 6, calculate the battery capacity required for the installation.
Worksheet 7: Battery Capacity Calculation Worksheet
Capacity Formula
Calculated
Value
Standby
Capacity
Total standby current X 24 hours
X 1.1 contingency factor.
Alarm
Capacity
Total alarm curr. X 0.083 (5 min)
or X 0.250 (15 min)
Total
Capacity
Add standby and alarm
capacities
Use the Battery Selection Table to select the appropriate battery for the installation.
Battery Selection Table
Capacity Recommended Battery Comment
4AH Yuasa NP4-12
7AH Yuasa NP7-12
12AH Yuasa NP12-12 Fits in large
mercantile
cabinet only.
14AH Yuasa NP7-12 Connect two
in parallel.
17.2AH Yuasa NPG18-12 Fits in large
mercantile
cabinet only.
Connect the battery, referring to Figure 3-25.
The standby battery is automatically tested for 10 minutes every 4 hours, beginning 4 hours after exiting
Programming mode. In addition, entry into the Test mode initiates a battery test. The VISTA-128FBPT/VISTA-
250FBPT also runs a 5-second battery test every 60 seconds to check if the battery is connected.

Honeywell VISTA-250FBPT Specifications

General

Brand	Honeywell
Model	VISTA-250FBPT
Category	Security System
Language	English