Bosch 24VDC Operation And Installation page 6

Locating Power Connectors on the D9142F
The D9142 provides power to and receives low voltage AC power back from the D1601 Transformer
(see Figure 4). The D1601 transformer is provided with a wiring harness that is terminated with a
connector. The J8 connector is where the transformer is connected to the D9142.
AC Power for the Communicator
The D9142F can also provide 16.5 VAC, 40 VA to power the control/communicator. The yellow 2
conductor wiring harness supplied in the D9142M package is used for connecting power to the control
panel. This harness connects to the J9 connector on the D9142F (see Figure 4). The other end is
connected to terminals 1 and 2 of the control panel. This option eliminates the D1640 transformer to
power the panel. If the D9142F is to be used to power the panel the D8109L should be mounted next to
the control's enclosure and joined with conduit.
F01U036364-03
Figure 4: Plugging in the Power
D9142F Operation and Installation
Page 6 © Bosch Security Systems, Inc.