Installing FIRE Radio Transformer Enclosure

Fire radios powered by a plug-in transformer are required to have that transformer enclosed in a protective enclosure. This enclosure also allows the wire from the transformer to the radio to be protected in EMT or flex-conduit.

Security Solutions provides a protective enclosure. Electricians are required to provide the following materials when they install the power outlet.

  • 1 - 4 Square box, shallow or deep
  • 1 - Single duplex raised cover plate with tabs (The tabs are required)
  • 1 - Recepticle
  • 2- 2" 6/32 machine bolts

 

In a  typical installation, the fire panel will be powered from the same circuit. Usually, a conduit is installed from the 4 square to the fire panel. Confirm this with your fire alarm installer.

 

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STEP 1 - Drill a hole in the middle to alighn with the center screw hole on the receptacle. This is required so we can secure the transformer at installation. 

Remove the tabs and set aside, you will need them later.

DO NOT USE THIS HOLE TO SECURE THE ENCLOSURE.

 

Raised cover plate with hole drilled in middle

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STEP 2 - Remove tabs from both ends of the receptacle. 

 

Receptacle with tabs removed

 

 

 

 

 

 

 

 

 

 

STEP 3 - Insert the 6/32 bolts through the can, cover plate, receptcal and use the tab removed from the cover plate as nut.

 

Enclosure, raised cover plate, receptacle, tab

 

 

 

 

 

 

 

 

 

 

 

 

Notice the tab serving as a nut that will not spin when the bolt is tightened.

In your actual installation, you would also have your electrical wires secured to the receptacle before the next step.

 

Another view of the assembled parts

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STEP 4 - Tilt the enclosure to the side and secure the cover plate to the 4 square. Then move the enclosure to the other side and secure the 2nd cover plate screw. The length of the 6/32 bolts allows for ample play in the assembly.

 

Turn can to the side and secure

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

STEP 5- Tighten up the 6/32 bolts to flush up the receptacle. 

Notice the center screw hole is open for the Fire Alarm Installer. 

Some installers have success using the holes in the outside corners to slide a screwdriver through to tighten up the cover plate mounting screws but as you can see here, the holes do not perfectly align.

DO NOT SECURE THE DUPLEX OUTLET TO THE ENCLOSURE CAN AND THEN SECURE THE ENCLOSURE DIRECTLY TO THE 4 SQUARE THEREBY NOT USING THE RAISED COVER PLATE.

The enclosure is not rated to hold the receptacle. The enclosure is effectively a cover plate.

Fully assembled can

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Security Solutions will install a conduit or flex between the enclosure and the fire radio.

Thank you!

 

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