Bosch Appliances D9412GV2 Power Supply, Primary Power Terminals 1 and, Secondary Power Terminals

D9412GV2/D7412GV2 Operation and Installation Guide 5.0			Power Supply
5.0	Power Supply	5. Secure the transformer to the outlet with the screw
		provided.
		D8004 Transformer Enclosure Required for Fire
5.1	Primary Power Terminals 1 and 2
		Systems: Use the D8004 Transformer Enclosure for
5.1.1 Primary (AC) Power Circuit		the D1640 Transformer in fire and combined fire and
The primary source is a 16.5 VAC, 40 VA, internally-		burglary applications.
		Check with the Authority Having Jurisdiction (AHJ)
fused transformer (Bosch Security Systems Model
D1640). The control panel draws 200 mA when idle		about mounting transformers on specific circuits.
and 500 mA when in an alarm state. The total available		5.2	Secondary Power Terminals
auxiliary current is 1.4 A.		5.2.1	Secondary (DC) Power
Transient suppressors and spark gaps protect the circuit
		A 12 V, 7 Ah (up to 14 Ah) sealed lead-acid
from power surges. This protection relies on the
		rechargeable battery (D126) supplies secondary power
ground connection at Terminal 10. Ensure that you
		for auxiliary and alarm outputs, and powers the system
connect Terminal 10 to a proper ground. Refer to
		during interruptions in primary (AC) power.
Section 4.5 Connecting Earth Ground on page 16.
AC Power Failure			Warning - Use Lead Acid Batteries Only:
The system indicates an AC power failure when			The charging circuit is calibrated for lead-
			acid batteries. Do not use gel-cell or nicad
Terminals 1 and 2 do not have power. The AC Fail
			batteries.
Time program item sets the number of minutes or
		Extra Batteries Increase Back-up Time: To increase
seconds without AC power before the control panel
acknowledges the failure and the number of minutes or		battery back-up time, connect a second 12 V, 7 Ah
seconds after the power returns before the control		battery in parallel to the first battery to form a 12 V, 14
panel acknowledges restored power. Refer to the		Ah battery. Use a D122 Dual Battery Harness to ensure
D9412GV2/D7412GV2 Program Entry Guide		proper and safe connection.
(P/N: F01U003636) for additional information about			Caution: When connecting two D1218
AC Fail Time.
			Batteries to the control panel, both must have
5.1.2	Installing the Transformer
			the same capacity (use two 17.2 Ah batteries
	Do not short the terminals of the		or two 18 Ah batteries).
	transformer: Shorting the terminals opens	D1218 Battery
	the internal fuse, causing permanent failure.	The D1218 is a 12 V, 17.2 or 18 Ah battery for use in
	Connect the transformer to Terminals 1 and
		applications requiring extended battery standby time.
	2 of the control panel before plugging it into
		Up to two D1218 batteries can be connected when
	the power source.
		used with a D122 Dual Battery Harness.

1.Use 1.22 mm (18 AWG) wire (minimum) to connect the transformer to the control panel.

The wire length should be as short as possible. The maximum length is 15 m (50 ft.). Connect the battery and plug in the transformer.

2.Route telephone and sensor loop wiring away from any AC conductors, including the transformer wire.

AC wiring can induce noise and low level voltage into adjacent wiring. Route data wiring away from AC and telephone wiring.

Always connect the battery first and then plug in the transformer.

3.Connect the battery. Refer to Section 5.2.2 Installing the Battery on page 21.

4.Plug the transformer into an unswitched, 120 VAC, 60 Hz power outlet only.

20 Bosch Security Systems, Inc. 5/05 F01U003641B