Re: Ademco 50P - Unable To Disarm

["Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx>]

...and with two 12v 7amphour batteries in parallel you'd have only an hour
or two standby time. Was this a diy job? What kind of building did you say
it was? If this is a commercial building dunno how you passed fire
inspection either.




"Crash Gordon" <webmaster@xxxxxxxxxxxxxxxxxxxxx> wrote in message
news:3X%gg.24$yy2.7250@xxxxxxxxxxxxxxxxxx
| yep 1000ma is 1 amp
| If the siren is -500ma then you have a miracle siren, it's a typo should
be
| 500 ma
| expansion modules and keypads count too.
| strobes draw a lot
| you're way over
|
| no not everything will go into alarm at the same time
|
|
|
|
| "Don" <dedeaux@xxxxxxxxxxx> wrote in message
| news:1149471556.498008.167310@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
|| Household crises kept me from following up immediately.
||
|| I took the easiest/quickest way for me to do the ballpark by
|| calculating the max system alarm draw from each device's spec sheet.
|| The total is either 9039.8 mA or 5039.8 mA.
||
|| The difference arises from whether I add or subtract the draw of the
|| internal alarms.  The four are Ademco Wave 2F.  The spec sheet SEEMS to
|| say -500mA.If this can really be negative, the total draw is the
|| smaller figure.
||
|| Another thing is my assumption that 1 Amp is 1000 mA.
||
|| Another assumption is that every glass break in the building would go
|| off at the same time.  There actually are three max to a floor for six
|| floors.
||
|| As I mentioned in an earlier post, each item is its own zone in the
|| star topology.Eight of the smokes are connected directly to the Vista
|| 50P.  The remaining eight smokes, two COs and three heats go through
|| two 4208 expansion modules to the panel.  All contacts and breaks go
|| through another five 4208s to a loop extender which connects to the
|| panel.
||
|| The building renovation is incomplete so several items included in the
|| computed draw, above, are not yet mounted though they are wired for. (5
|| sirens, 1 strobe, 3 breaks, 4 smokes, 1 heat).
||
|| As to auxiliary power, I guess not really.  Certainly not enough in
|| light of these figures.  The only auxiliary power is the transformer
|| for the loop extender.
||
|| BTW, I misstated in an earlier post.  All seven keypads are 6160s.
||
|| I will go to my local system parts supplier and find out whether they
|| have AlarmSaf and/or Altronics power supplies with relay outputs for
|| supervision.
||
|| Any further advice or suggestions especially in advance of this
|| purchase and installation is appreciated.
||
|| Thanks.
||
||
|| Crash Gordon wrote:
|| > Well, sure that's true too, but may be more diff. for a diy...easier to
| look
|| > up all the spec sheets.
|| >
|| >
|| >
|| > "Nomen Nescio" <nobody@xxxxxxxxx> wrote in message
|| > news:bf9678ee6b55826593e3b003b93e2316@xxxxxxxxxxxx
|| > | Crash Gordon said:
|| > |
|| > | >Actually I think it's more practical to do the calcs on paper with
|| > in-alarm
|| > | >ma ratings of all devices.
|| > |
|| > | Battery and aux power calculations are great when you're designing a
|| > | system, because it means  the installer goes out to the job with the
| right
|| > | equipment.  And of course, they're essential for commercial fire
| systems.
|| > |
|| > | But when you have a system that is already installed, why calculate
| when
|| > | you can measure?  Want to know how much current your system draws
| while on
|| > | batteries?  Connect your meter in series with a battery lead and
|| > disconnect
|| > | the AC.  You'll know exactly, to a couple of decimal places, instead
| of
|| > | having an estimate.
|| > |
|| > | - badenov
|| > |
|| > |
||
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|