Bosch D285DH 用户手册
This test is especially useful in environmentally
unstable or unclean areas.
Sensitivity voltage test
This detector head has a socket that accepts the
D1005 Test Cable. The D1005 connects to the
detector head and allows a voltmeter to read the
sensitivity of the device.
unstable or unclean areas.
Sensitivity voltage test
This detector head has a socket that accepts the
D1005 Test Cable. The D1005 connects to the
detector head and allows a voltmeter to read the
sensitivity of the device.
LEDs
The detector has a built-in LED that flashes to indicate
the device is powered. The LED latches on steady in
an alarm condition.
the device is powered. The LED latches on steady in
an alarm condition.
Certifications and approvals
Region
Certification
USA
UL
UROX: Smoke - Automatic Fire Detectors
(UL268 and A)
CSFM
see our website
MSFM
permit #2186
Hong Kong
HKFSD
J-005/C/019
Installation/configuration notes
Installation
The duct detector head is part of a compound device.
The duct detector housing installs on the duct and
contains all the wiring. The duct detector head
attaches to the base by aligning the head with the
base and turning it clockwise. No tools are required
for installation other than a screwdriver to tighten the
optional tamper screw.
The duct detector housing installs on the duct and
contains all the wiring. The duct detector head
attaches to the base by aligning the head with the
base and turning it clockwise. No tools are required
for installation other than a screwdriver to tighten the
optional tamper screw.
Wiring
The terminal block on the duct housing accepts up to
12 AWG (ISO 4 mm
12 AWG (ISO 4 mm
2
) wire.
Parts included
Quanti
ty
Component
1
Detector head with dust cover
1
Lit pack – Installation Manual, Technical Service Note on
installation
Technical specifications
Electrical
RMS Ripple
(maximum):
25% of DC input
Voltage (input):
Two-wire: 8.5 VDC to 33 VDC
Four-wire: 10 VDC to 30 VDC
Current
Alarm:
Two-wire: depends on control panel which
must limit the alarm current to 100 mA
maximum
Four-wire: depends on detector base; refer to
pertinent base specifications
Standby:
Two-wire: 0.08 mA at 12 VDC;
0.09 mA at 24 VDC
Four-wire: 24 mA at 12 VDC or 24 VDC
Environmental
Relative Humidity:
Up to 93%, non-condensing
Temperature
(operating):
+32°F to +100°F (0°C to +38°C)
Radio Frequency
Interference
(RFI) Immunity:
No alarm or setup on critical frequencies in
the range from 26 MHz to 950 MHz at field
strengths less than 50 V/m
Mechanical
Color:
Bone white
Dimensions
(diameter x D):
4 in. x 1.25 in. (10.2 cm x 3.2 cm)
Ordering information
D285DH Photoelectric Duct Smoke Detector Head
(12 VDC or 24 VDC)
Detects the large smoke particles which typically
result from wood, paper, and fabric combustion
Order number
(12 VDC or 24 VDC)
Detects the large smoke particles which typically
result from wood, paper, and fabric combustion
Order number
D285DH
2 | D285DH Photoelectric Duct Smoke Detector Head (12 VDC or 24 VDC)