Connecting The Ac Transformer And Battery; Panel Earth Ground Connections - ADEMCO VISTA-32FB Installation And Setup Manual

VISTA-32FB Installation and Set-Up Guide

Connecting the AC Transformer and Battery

As shipped, the VISTA-32FB is supplied with a built-in 18VAC transformer. This
transformer must be hard-wired into the premises' electrical system. The optional 1451
18VAC transformer, along with the optional VISTA-ULKT enclosure kit, must be used for
UL listed commercial burglary installation. The 1451 transformer must also be hard-wired
into the premises' electrical system. Therefore, it is recommended that all zones and
expansion modules are wired according to each section's instructions before powering up the
system for programming and testing. Refer to Section 19: Final Power-Up Procedure for
specific instructions on how to connect the transformer and backup battery.
If desired, each section can be wired, programmed, and tested individually before final
power-up.
Refer to Section 19: Final Power-Up Procedure for battery standby calculations and battery
selection table.

Panel Earth Ground Connections

When using the standard built-in transformer shipped with the VISTA-32FB, follow the
steps below to make connections to earth ground:
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 built-in 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.
4. Replace the transformer enclosure cover after wiring is complete.
When using the optional 1451 transformer, follow the steps below to make connections to
earth ground:
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 earth ground wire
should be the only wire under this nut.
3. Run a 16AWG wire from this post to the panel's earth ground terminal (terminal 30).
Use a second green nut (supplied) to secure this wire to the ground post. This method of
connection avoids ground loops that may occur when the 1451 and panel are connected to
different earth ground systems.
The panel requires this connection in order for its lightning transient protection devices and earth
ground supervision to function properly.
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