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Installation
46 MS-9200UDLS PN 52750:E1 01/27/09
2.2 Mounting Optional Transformer/Remounting Chassis
One XRM-24B(E) transformer is supplied standard with the control panel. An optional
second XRM-24B(E) transformer can be ordered and installed to provide maximum
system power. Install the transformers in the locations indicated in the following
illustration.
6. The standard transformer is premounted to the chassis. If the optional second
transformer has been ordered, mount it to the chassis as illustrated below.
The chassis does not need to be removed to install the optional transformer.
7. When the location is dry and free of construction dust, install the chassis/
transformer/circuit board assembly.
8. Mount the chassis to the backbox by aligning the two mounting tabs with the
slots in the backbox, then position the two mounting hole tabs over the studs with
nuts located in the upper portion of the backbox.
9. Slide the tabs located on the bottom of the chassis into the mounting slots in the
backbox by pressing the chassis down.
10. Secure the chassis to the backbox by tightening the two mounting nuts (#10-32)
at the top, and to ensure proper grounding, use a 3/8” nut driver or socket.
11. If the main circuit board is not already attached to the chassis, install it by
positioning the ten mounting holes over the studs on the chassis and secure with
the supplied screws.
12. Connect the Standard XRM-24B(E) Transformer plug to Transformer 1
Connector J10 on the FACP main circuit board
13. Connect the Optional XRM-24B(E) Transformer plug to Transformer 2
Connector J11 on the FACP main circuit board.
14. Complete the installation as detailed in the following sections.
Figure 2.2 MS-9200UDLS Main Board/Chassis Installation
Standard XRM-24B(E) Transformer
Mounting Slot
Mounting Studs
Optional XRM-24B(E)
Transformer Installation
Slide top flange
of XRM-24B(E)
into slot at top left
of chassis.
Slide bottom
flange of
XRM-24B(E)
into transformer
mounting slot.
XRM-24B(E)
will remain
securely in place
after bottom
flange has been
seated.
Optional XRM-24B(E) Transformer mounting slot