Bosch D250a Bedienungsanleitung

Fire Alarm Systems | D250A Two‑wire Detector Base (12/24 VDC)

D250A Two‑wire Detector Base

(12/24 VDC)

www.boschsecurity.com

u12 VDC or 24 VDC operation

uTwo‑wire circuit compatibility

uCan be used in circuit controlled by D291M

addressable base

uLow‑profile six‑inch diameter base accepts

interchangeable detector heads

uEasy head removal for cleaning and servicing

The D250A is a two‑wire, 12 VDC or 24 VDC detector

base without an alarm LED. It accepts Bosch D254 and

D255 heat detector heads. Use the detector base with

either of these heat detector heads in circuits where

specifications call for fixed‑temperature heat

detectors. You can also use this detector base with the

Bosch D256A Rate‑of‑Rise and Fixed‑temperature

(+135°F [+57°C]) Heat Detector and D257A

Rate‑of‑Rise and Fixed‑temperature (+190°F [+88°C])

Heat Detector.

The detector base also operates in a circuit controlled

by the Bosch D291M Addressable Smoke Detector. In

this circuit configuration, the D291M Addressable

Detector Base controls a supervised 24 VDC circuit

containing up to 19 detector bases that accept any

D291M listed head. In this case, the detector base is

not limited to heat detection heads.

Notice

For more information on using the detector base

with the D291M, see the D291M Installation

Instructions.

Certifications and approvals

Region Certification

USA UL UROX: Smoke - Automatic Fire Detectors

(ANSI\UL 268)

CSFM see our website

Installation/configuration notes

Compatible Products

The following products are compatible with the D250A

Two‑wire or Four‑wire Detector Base:

Category Product ID Product Description

Control

Panels

D7022 Conventional FACP

D7024 Conventional FACP

D7024 Addressable FACP

D7212 Addressable control panel

D7212G Addressable control panel

D7412G Addressable control panel

D9112 Addressable control panel

D9412G Addressable control panel

D9124 Addressable FACP

Detector

Bases

D291M Addressable multiple detector base

Detector

Heads

D254A Fixed temperature heat detector

(+135°F [+57°C])

D256A Rate‑of‑Rise and fixed temperature heat

detector (+135°F [+57°C])

D257A Rate‑of‑Rise and fixed temperature heat

detector (+190°F [+88°C])

D281A* Ionization smoke detector head

D282A* Photoelectric smoke detector head

D283A* Photoelectric smoke detector head with

fixed temperature (+135°F [+57°C])

heat sensor

* When used in a circuit with a D291M multiple

detector base, the D250A accepts these detector

heads listed for use with the D291M.

Mounting

The detector base fits on standard three‑inch

octagonal and four‑inch square and octagonal back

boxes.

Wiring

Wiring connections are accessible with the base

mounted to the back box.

Parts included

Quant. Component

1D250A detector base

1 Hardware pack

1 Literature pack

Technical specifications

Electrical

Current (operating): Depends on detector head; refer to pertinent

detector head specification

Voltage (operating): 8.0 VDC to 36.3 VDC

Environmental

Temperature

(operating):

+32°F to +100°F (0°C to +38°C)

Mechanical

Color: Bone white

Dimensions

(diameter):

6 in. (15.2 cm)

Ordering information

D250A Two‑wire Detector Base (12/24 VDC)

Accepts Bosch D254 and D255 heat detector heads

Order number D250A

2 | D250A Two‑wire Detector Base (12/24 VDC)

3 | D250A Two‑wire Detector Base (12/24 VDC)

Represented by:

Americas: Europe, Middle East, Africa: Asia-Pacific: China: America Latina:

Bosch Security Systems, Inc.

130 Perinton Parkway

Fairport, New York, 14450, USA

Phone: +1 800 289 0096

Fax: +1 585 223 9180

[email protected]

www.boschsecurity.us

Bosch Security Systems B.V.

P.O. Box 80002

5617 BA Eindhoven, The Netherlands

Phone: + 31 40 2577 284

Fax: +31 40 2577 330

[email protected]

www.boschsecurity.com

Robert Bosch (SEA) Pte Ltd, Security

Systems

11 Bishan Street 21

Singapore 573943

Phone: +65 6571 2808

Fax: +65 6571 2699

[email protected]

www.boschsecurity.asia

Bosch (Shanghai) Security Systems Ltd.

201 Building, No. 333 Fuquan Road

North IBP

Changning District, Shanghai

200335 China

Phone +86 21 22181111

Fax: +86 21 22182398

www.boschsecurity.com.cn

Robert Bosch Ltda Security Systems Division

Via Anhanguera, Km 98

CEP 13065-900

Campinas, Sao Paulo, Brazil

Phone: +55 19 2103 2860

Fax: +55 19 2103 2862

[email protected]

www.boschsecurity.com

2707042827 | en, V2, 06. Aug 2014

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