Bosch | 6/04 | 49323C
2
D285DH
| Installation Instructions |
FCC Notice
The D285DH Photoelectric Duct Smoke Detector
complies with Part 15 of the Federal Communication
Commission (FCC) Rules. Operation is subject to the
following conditions:
•
The detector might not cause harmful interference.
•
The detector must accept any interference received,
including interference that can cause undesirable
operation.
Changes or modifications not expressly approved by
Bosch can void the user’s authority to operate the
D285DH detector.
1.0
Introduction
The D285DH is a UL Listed detector designed for use
with commercial fire protective signaling systems and
household fire warning systems. Refer to the National
Fire Alarm Code (NFPA 72).
When properly installed using the D285 Series
Dectectors, tamper protection is provided by the
positive power line in/out wiring. This causes the
control to initiate a trouble signal when a detector is
removed from its base. The master control provides
two-wire system supervision. An end-of-line (EOL)
resistor, specified by the control manufacturer, provides
four-wire supervision.
2.0 Specifications
Table 1: Specifications
Description
Only requires a base. “B” is the UL
compatibility identifier. Refer to the
Two-Wire Smoke Detector Compatibility
Technical Service Note (P/N: 31866) to
determine the identifier used with the
D340 Series Duct Housing.
Operating
Temperature
+32°F to +100°F (0°C to +38°C)
0 to 95% relative humidity
(non-condensing)
Voltage and
Current
Refer to the D340 Duct Detector
Installation Instructions (P/N: 48188) and
the D341/D342
Duct Detector
Installation Instructions (P/N: 48196) for
voltage and current.
Power-up
Time
22 sec maximum
Two-wire:
Refer to the Two-Wire Smoke Detector
Compatibility Technical Service Note
(P/N: 31866).
Note: Bosch makes no claim written, oral,
or implied the D285DH works with
any two-wire control panels except
those specified in the
Two-Wire
Smoke Detector Compatibility
Technical Service Note
(P/N: 31866).
Compatible
Control
Panels
Four-wire:
Compatible with all UL Listed four-wire
control panels. Refer to the
manufacturer's installation instructions for
proper EOL resistor selection.
1.0
Introduction
