Installation Instructions

P/N 315-049427-1 Page 1 of 2
INSTALLATION GUIDELINES
Carefully follow the installation instructions below to
upgrade the NAC processor on the main board or
expansion board.
NOTE: Two NAC processor ICs are required to
upgrade all eight zones on the expansion board.
CAUTION:
Electronic equipment is extremely vulnerable
to static discharge. Observe precautions for
handling static sensitive devices when
performing this upgrade.
To upgrade a module, remove the old IC(s) and
replace it with the new IC(s) from the kit as follows:
1. Notify the person in charge of the fire alarm
system (and the Fire Department if they are
connected to the system) that the control unit
will be temporarily out of service while the
firmware upgrade is installed.
2. Upload your program to a PC if it is not already
saved.
3. Open the panel door and remove all power to
the control unit.
4. Locate the IC in the upgrade kit.
5. On the PC board of the module being upgraded,
locate the IC. This IC has a label attached to the
top surface that indicates the firmware revision
currently installed.
6. Note where and how the IC is positioned. (Refer on
page 2 to Figure 1 or 2 for the location of U9 on the
main board and Figure 3 for the location of U1 and
U3 on the expansion board.)
7. Remove the old IC(s) from its socket. Do this by
lifting one end of the IC slightly, then the other
end. Continue this process until the IC comes
free. Use a short, thin blade screwdriver for best
results.
8. Insert the new IC provided into the socket. Press
down firmly to seat the IC properly in the socket.
CAUTION:
Make sure the "U" cut in the new IC is positioned
as it was in the old IC (if appropriate). Check
that the IC is properly seated in the socket
and that all the IC pins are properly aligned
with the connector.
9. Reconnect system power. Close the control unit
door and check operation of the system. The
control unit firmware upgrade is now complete.
INSTALLATION INSTRUCTIONS FOR UPGRADING NAC PROCESSOR
NAC-UK