9. If I/O 1 is being used to support a Coded Input Zone (and it’s the only one that can), cut out Capacitor C23. In
addition, program Point l/O 1 as a “CODEDIN” point type.
The second installation task is to get the 4020 ready for power-up.
1. Verify that the 4020 harness interconnections are as described in FSB-393R and the 841-866 interconnection
diagram.
2. Connect City Circuit jumper plugs on the Master Controller Board according to the specified configuration. Form
C and Remote Station are two configuration examples. The proper plug configurations are listed in the 4020
Field Wiring Diagram.
3. Install the Power Supply Tap Enable Jumpers P3,. P4, and P6 on the Power Interface Board. These jumpers
allow the various system voltages to be distributed throughout the 4020. When these jumpers are removed, the
4020 does not operate. You must insert all three jumper plugs for the system to operate properly.
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P3 enables +5V and +24V for system circuit board use.
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P4 enables +28SV from the Power Supply “A” Tap, power to the MAPNET II@ 36V converter, and system 24V.
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P6 enables +28.5 power from the Power Supply “B” Tap.
The third installation task is to verify the system DIP switch settings and jumper placements.
1. Confirm that the setting of DIP switch SW1 on each board matches the fixed address of the board.
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Make certain that the Standard Slave Board Address Switch SW1 is set to Address 1. The Standard Slave
Board takes care of internal communications for the Power Supply/Charger, and its built-in MAPNET II@ and
8-Point I/O functions.
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The Master Controller (Address 0), the Power Supply/Charger (Address 2), and the Standard Slave Board’s
built-in MAPNET II@ function (Address 3) do not have DIP switches.
2. Make certain that the Power Supply Configuration Switch (SW2) on the Standard Slave Board is set for lead-
acid battery charging with SW2-3 ON and SW2-4 OFF Note that switch positions SW2-1 and SW2-2 are not
used, but are kept ON.
3. If the optional RS-232 Board is installed, use the Programmer’s Report to confirm that the interface jumpers
match the programmed port types.
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If the optional 8-Point I/O Board is installed for IO Points 9 through 16, unplug the board’s power/comm
connectors, P9 and Pl 0, and remove the board to gain access to the RS-232 Port Jumpers. Note that all of
the terminal strips in the 4020 System are pluggable to make it easy to connect the necessary wiring and
replace any faulty boards after they have been wired.
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Make certain that the Port A Jumpers, Pl, P4, P5, P6, and P7, are in the “RS” position. If Port B is being used
to communicate with a printer or a CRT/keyboard, ensure that Jumpers P2 and P3 are placed in the AC or
DC position depending on whether the device is an AC-powered or DC-powered device.
The fourth installation task is to power-up the system.
1. Energize the AC input power.
2. Connect the system batteries. Unlike the 4100 Fire Alarm System, the 4020 batteries can be connected to the
system immediately. This is because the Power Supply/Charger outputs the necessary charging voltage to the
batteries upon power-up, instead of waiting for the start-up process to finish.
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