Setup guide

Section 3 – Installing the Control
3-27
Use the following instructions for wiring the 18VAC secondary winding of the internal transformer.
To connect the internal transformer to the control, perform the following steps:
Step Action
1 Open the control panel cover.
2
Connect the blue 16AWG wire from the transformer at the control panel to terminals 1 and 2.
3 Connect the green 16 AWG wire (ground) at the control panel ground terminal 30.
4
Replace the front cover of the control panel.
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 to the transformer supplied with the VISTA-32FB, perform the following steps:
Step Action
1 Run an earth ground wire into the built-in transformer’s enclosure via the same knockout used for the
120VAC wiring.
2 Use a wire nut (not-supplied) to splice this earth ground wire to the green flying lead located inside of and
bonded to the transformer’s enclosure. Push the mated wires into the enclosure.
3 Connect the green flying lead, which emerges from the top of the transformer’s enclosure to the earth ground
terminal (terminal 30) on the VISTA-32FB.
To connect the earth ground to the 1451, 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
The VISTA-32FB must be supported by backup, rechargeable battery in the event of an AC power loss. A 12VDC, 12AH
to 34.4AH battery must be connected the control panel. Two 7AH batteries may be mounted in the small Fire-only
cabinet. If additional capacity is required, use a Fire-Listed battery enclosure to house the batteries.
The battery’s capacity must be sized to provide 24 hours (UL 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.
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.