Bosch Appliances DS794Z installation instructions General Description, 2.0Specifications

Installation Instructions

DS794Z Long Range Passive Infrared

Intrusion Detector with Self-test

Trademark names are used throughout this document. In most cases, these designations are claimed as trademarks or registered trademarks in one or more countries by their respective owners. Rather than placing a trademark symbol in every occurrence of a trademark name, Bosch Security Systems, Inc. (hereinafter referred to as Bosch) uses the names only in an editorial fashion and to the benefit of the trademark

owner with no intention of infringing the trademark.

1.0 General Description

The DS794Z is a high performance intrusion detector designed to provide an alarm condition upon the detection of an intruder moving into or through its coverage pattern.

Technology designed into the DS794Z is based on the transmission of infrared energy; all objects transmit infrared energy. The warmer an object is, the more infrared energy transmitted. The DS794Z detects the change in infrared energy that occurs when a target passes through its view.

The coverage pattern, consisting of sensor fingers (to detect the target) is arranged in a side-by-side array. The total number of fingers is determined by the optical module used. The fingers are grouped by polarity into pairs, with each pair consisting of one zone.

To detect motion, the DS794Z must first see a change in infrared energy in one finger followed by a change of energy in the remaining finger. Therefore, disturbances that occur in only one finger do not constitute motion and are ignored.

The “catch sensitivity” may be changed by the installer to provide a degree of sensitivity determined by each installation.

2.0Specifications

• Coverage:

The DS794Z is shipped with the OA80 80 foot (24.4 m) Mirror installed. If a 200 foot (61 m) range is desired, it will be necessary to install the OA200 Mirror that is sent along with the unit.

Standard Range:

Broad (OA80 Mirror): 80 ft. by 50 ft. (24.4 m by 15.3 m)

Long (OA200 Mirror): 200 ft. by 10 ft. (61.0 m by 3.1 m)

Optional Range:

Long (OA120 Mirror): 120 ft. by 25 ft. (36.6 m by 7.6 m)

•Input Power: 6.0 to 15.0 VDC; 18 mA at 12 VDC.

•Standby Power: There is no internal standby battery. Connect to DC power sources capable of supplying standby power if primary power fails. Eighteen mA-H required for each hour of standby time needed. Four hours (72 mA-H minimum) are required for UL Listed Requirements.

•Sensitivity: Field selectable for Standard, Intermediate, or High.

•Alarm Relay: Silent operating Form “C” relay. Contacts rated 125 mA, 28 VDC maximum for DC resistive loads. Do not use with capacitive or inductive loads.

•Tamper: Normally Closed (with cover in place) tamper switch. Contacts rated at 28 VDC, 125 mA maximum.

•Trouble Output: A solid state open collector shorts to ground (-) when the detector is in a trouble condition. Maximum current load is 25 mA.

•Temperature: The storage and operating range is -20° to +120°F (-29° to +49°C). For UL Listed Requirements, the range is +32° to +120°F (0° to +49°C).

•Sonalert Connector: Using a Sonalert type sounder (low voltage) will provide an audible tone when the unit is in alarm. A sounder is intended only as an aid for walk testing during installation.

•Reading Bosch Security Systems, Inc. Product Date Codes

For Product Date Code information, refer to the Bosch Security Systems, Inc. Web site at: http://www.boschsecurity.com/datecodes/

		CIRCUIT BOARD RETAINER TAB (2)
	COVER TAMPER SWITCH		REPLACEABLE	PERMANENT
			OPTICAL MODULE
TAMPER RELAY				RELFECTING MIRROR
	TO REPLACE OPTICAL MODULE,
		LIFT THIS EDGE UP
				WALK TEST/ALARM
				LED INDICATOR
4
5
6
7
8
			BACKGROUND NOISE
TERMINAL		SETUP SWITCH BANK	VOLTAGE CONNECTOR
		(UNDER MIRROR ASSEMBLY)
STRIP			SONALERT™ CONNECTOR
			(UNDER MIRROR ASSEMBLY)

Front view with cover off

SURFACE WIRE

ENTRANCE

BRACKET WIRE ENTRANCE

SURFACE MOUNT

HOLES (4)

REAR WIRE
ENTRANCE
	CORNER MOUNT
	HOLES (4)
REAR WIRE
ENTRANCE
TAMPER SCREW	COVER TABS (4)
HOLE
TEST/SOUNDER
	CORD SLOT
Base

•Options: OA120-2* Mirror and TC6000 Test Cord.

*Shipped in packages of 2.

3.0 Mounting

Select a location likely to intercept an intruder moving across the coverage pattern (review patterns on page 4). The recommended mounting height is 7.5 ft. (2.3 m) for the DS794Z with the OA80 or OA120 Mirror, or 10 ft. (3.1 m) for the OA200 Mirror. Each mounting surface should be solid and vibration free. When mounting, avoid hot and cold drafts, heat sources, animals and pets and direct sunlight. Do not mount outdoors.

•Remove the cover by inserting a thin screwdriver into each of the four slots on the cover. Twist gently until the cover snaps free of the tabs on the base.