Final Power Up; Ac Power Up; Connecting The Back-Up Battery - ADEMCO Vista-20 Installation Instructions Manual

In section2, you made temporary power connectionsfor the purpose of programming g and
testing the installation. This sectionprovides tiormation about final power-up procedures
and battery size calculations.
Earth Groand Connect "Om
The
designated earth ground terminal (25) must be terminated in a good
earth ground for the lightning transient protectivedevicesin this product to
be effective. It also must be grounded to enable the telephone line fault
indicator to work properly. The followingare examplesof good earth grounds
available at most installations:
Metal Cold Water Pipe: Use a non-corrosive metal strap (copper is
recommended) firmly secured to the pipe to which the ground lead is
electricallyconnected and secured.
AC Power Outlet Ground: Available from 3-prong, 120VAC, power outlets
only. To test the integrity of the ground terminal, use a three-wire circuit
tester with neon lamp indicators, such as the ULListed Ideal Model 61-035,
or equivalent, available at most electricalsupply stores.
AC Power-Up
1.
Plug the 1321/'l'F2 or 4300 transformer into a 24hour, uninterrupted
120VAC outlet.
2. Following power-up, AC,
dl
(disabled),or Busy Standby (Alpha keypads)
or NOT READY (fixed-word keypads) will be displayed. Also the green
"POWER LED* on the keypad(s)should light.
* Somekeypads areequipped witha "READY'LED in place of a "POWER LED.
After approximately 1 minute, the initial displays will revert to
DISARMED..JU3ADY TO ARM for Alpha keypads,or READY for Fixed-
word keypads (if there are no faulted zones). This l-minute delay allows
PIRs, etc.to stabilize.
To bypass this delay, press: [#]+ [0].
Connecting
The
Back-up Battery
In the
event of an AC powerloss,the Control panel is supportedby a back-up,
rechargeable gel cell battery. The minimum battery size recommendedis the
No. 467 (12V, 4AH) battery. See "Calculating Battery Size Needed" below.
The battery is installed in the contiol cabinet.
The standby battery is automaticallytestedevery 4 hours, beghing 4 hours
after exiting programming mode. In addition, entry into the test mode will
causea battery test to be initiated.
Calculating the Battery Size Needed
Detemnine the total device current draw after filling in the AUXILIARY
DEVICE CURRENT DRAW WORKSHEET on the next page. To this figure
add the 100 mA that is drawn by the controlpanel itself. The% to determine
the battery size needed,use the followingformula
TotalCurrentDrawn*x Numberofhoursstandby wanted=BatteryAmpere/Hours.
* Convert mAfigure b decimal Amps (see example).
Example:
If total auxiliary deticecurrent drawn is 450 mA, add 100 mA for
the control panel, for a total of 550 mA (0.55 amps); if 24-hour standby is
wanted, the calculationwill be:
0.55 mA x 24 hours = 13.2Ampere/Hour battery needed.
In this example,two 7 Amp/Hr batteries(connected in parallel) must be used.
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