Bosch D287 User Manual

D287/D288/D292/D293A/D293E

Installation Instructions

Smoke Detector Bases

D287/D288/D292/D293A/D293E | Installation Instructions |

1.0 Overview

The D287/D288/D292/D293A/D293E Smoke Detector Bases are designed for use with the D286 Ionization Smoke Detector, D285/D285TH Photoelectric Smoke Detectors, and D603/D604/D605 Heat Detectors. Install these bases according to the National Fire Alarm Code, NFPA 72.

Before installing a smoke detector base, read and understand this and the following documents to ensure proper system operation:

• D285/D285TH Installation Instructions (P/N: 32029)

• D286 Installation Instructions (P/N: 32035)

• D603/D604/D605 Installation Instructions (P/N: 45570)

• NFPA Standard 72

This document covers only the information necessary to mount and wire the bases. Other information is available from:

• Two-wire compatibility information in the Technical

Service Note: Two-Wire Smoke Detector Compatibility (P/N: 31866).

• Installation guidelines in the Technical Service Note: Smoke Detector Installation Considerations (P/N: 31347).

• Information about power requirements, testing, and maintenance in the D285/D285TH Installation Instructions (PN: 32029), D286 Installation Instructions (PN: 32035), and D603/D604/D605 Installation Instructions (PN: 45570).

- D287 Base only, two-wire

- D288 Base only, two-wire, wide diameter

- D292 Base only, four-wire

- D293A Base only, four-wire, Form “C”

Auxiliary relay

- D293E Base only for power supervision, four-

wire, end-of-line (EOL) relay, Normally Open (N/O) auxiliary relay

- D293S Base only, four-wire with sounder

- D275 EOL supervision module for four-wire

systems

“A” is the Underwriters Laboratories, Inc. (UL) compatibility identifier for the D286, D285/D285TH, D603/D604/D605 Smoke Detectors. To determine the identifier used with the D287, refer to the Technical

Service Note: Two-Wire Smoke Detector Compatibility (P/N: 31866).

Detector Power Requirements

• Standby voltage: Two-wire. 8.5 VDC to 33.0 VDC Four-wire 10 VDC to 30 VDC

Alarm Current

• Two-wire. Dependent on the control panel that must

limit the alarm current to 100 mA maximum.

• Four-wire

- D292: 52 mA at 12 VDC 54 mA at 24 VDC

(70 mA maximum at 30 VDC)

- D293A: 58 mA at 12 VDC 62 mA at 24 VDC

(75 mA maximum at 30 VDC)

- D293E: 82 mA at 12 VDC 86 mA at 24 VDC (100 mA maximum at 30 VDC)

- D293S: 52 mA at 12 VDC 54 mA at 24 VDC Sounder 15 mA at 12 VDC, 25 mA at 24 VDC

Bosch | 6/04 | 31348G2

D287/D288/D292/D293A/D293E | Installation Instructions | 2.0 Mounting

2.0 Mounting

1. Select mounting locations based on the Technical

Service Note: Smoke Detector Installation Considerations

(P/N: 31347).

2. Pre-run all system wiring to the base locations.

3. Mount the base using the two oblong mounting holes.

4. Tighten the base to the mounting surface.

5. If mounting to 4 in. (10 cm) square boxes, use the adapter plate. First, mount the adapter plate to the box, then mount the base to the adapter plate and box using the oblong mounting holes. Refer to Figure 1.

Figure 1: Adapter Plate Connections

1 - Adapter plate mounting holes (2) 2 - Base to adapter plate mounting holes (2)

3.0 Two-Wire Detector Wiring

Refer to Figure 2 and Table 1 for the D287 and D288 terminal functions.

Figure 2: D287 Wired in a Two-Wire Configuration

(–)

(+)

1 - Two-wire loop 2 - Compatible 3 - EOL resistor

Table 1: Terminal Functions

Terminal Function

1 Alarm loop positive (+) IN 2 Alarm loop positive (+) OUT 3 Remote LED output 4 Alarm loop negative (-) 5 No connection

Depending on local regulations, the bases might be surface mounted using anchors, mollies, or wing nuts. The bases might also be directly mounted to 4 in. (10 cm) octagonal electrical boxes or single gang switch boxes.

Ensure the volume of any electrical box you use accommodates the number and size of conductors as specified by the National Electrical Code (NEC) or any local regulations having jurisdiction.

6. Review Section 3.0 Two-Wire Detector Wiring and Section 4.0 Four-Wire Detector Wiring on page 4 for wiring information.

7. Connect the wiring to the bases.

3Bosch | 6/04 | 31348G

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