Fire-Lite XRM-24 Installation Manual

The XRM-24 is a 24 volt, 100VA transformer which, when installed, will
provide maximum accessory power. The XRM-24 mounts on two studs
located in the backbox below the factory installed standard transformer.

XRM-24 Transformer

Product Installation Drawing

Doc. # 50012, Rev B 04/07/05 ECN 05-198

Installation

1) Remove all sources of power from the panel, AC and DC

CAUTION: Do not attempt to install the optional XRM-24 Transformer while power is applied to the panel
as this may result in personal injury or damage to the panel.

2) Mount the XRM-24 Transformer to the studs located beneath the factory installed transformer and secure
with the supplied #6 Kep nuts (turn clockwise) as illustrated in Figure 1 below.

3) IMPORTANT! In some installations, the transformer mounts partially under the FACP circuit board. In
these installations, the transformer must be insolated from the circuit board by installing the supplied
insulating fish paper between the transformer and circuit board as illustrated in Figure 2 below.

4) Remove the protective locking connector which is labeled ‘CAUTION! HIGH VOLTAGE’ (located below the
factory installed transformer connector).

5) Carefully align the XRM-24 connector with the mating connector on the main circuit board. Note the
protective key in the XRM-24 connector.

6) Reapply power to the panel.

Ratings

Normal operating voltage = 24 volts DC. Maximum Current = 3.6 Amps
Refer to appropriate product Technical Manual for maximum accessory power specifications.

FACP Backbox

Standard Transformer

#6 Kep nut

#6 Kep nut

Mounting Stud

XRM-24 Transformer

Mounting Stud

Figure 1: XRM-24 Installation

Top of FACP Backbox

Main Circuit Board

Bottom of FACP Backbox

Remove screw

FACP main
circuit board

Fish Paper

Remove screw

Slide insulating fish paper between transformers and circuit
board, position holes over circuit board mounting standoffs
and secure with circuit board mounting screws.

Install screw

FACP main
circuit board

Install screw

Figure 2: Fish Paper Installation

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