Results 1 to 3 of 3

Thread: FA Power

  1. #1
    Join Date
    Sep 2012
    Location
    NJ
    Posts
    2,151

    FA Power

    Never really clear on when "24v power is needed" for fire alarm devices such as modules and relays. Fire alarm systems are fairly simple as far as notification and initiating wiring. Thanks.

  2. #2
    Join Date
    Aug 2009
    Location
    Cypress, CA
    Posts
    54
    Quote Originally Posted by mstrlucky74 View Post
    Never really clear on when "24v power is needed" for fire alarm devices such as modules and relays. Fire alarm systems are fairly simple as far as notification and initiating wiring. Thanks.
    Most addressable devices receive their power from the SLC loop. Some manufacturers require that duct smokes or beam smokes require 24VDC power from the panel to operate.

    Most addressable relay modules do not require separate 24VDC power, however if you use an isolation relay, PAM or MR-101 you will need 24VDC to operate that relay.

    Consult the installation manual for the devices & panel you are installing.

  3. #3
    Join Date
    Sep 2012
    Location
    NJ
    Posts
    2,151
    Quote Originally Posted by ryant35 View Post
    Most addressable devices receive their power from the SLC loop. Some manufacturers require that duct smokes or beam smokes require 24VDC power from the panel to operate.

    Most addressable relay modules do not require separate 24VDC power, however if you use an isolation relay, PAM or MR-101 you will need 24VDC to operate that relay.

    Consult the installation manual for the devices & panel you are installing.
    Thanks.

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •