APPLICATION
The DCD-135/-190 fixed temperature/rate-of-rise heat
detector are suited for installation where high heat output
fires are expected or in areas where ambient conditions
would not allow use of other detection methods. Heat
detectors are intended for protection of property. Do
not rely on heat detectors for life safety protection.
Where life safety is a concern, smoke detectors must
also be used. A UL listed fire alarm panel must
electronically supervise the DCD-135/-190 heat
detectors.
All NS conventional devices are mechanically compatible
with Hochiki America HSB, HSC and YBA type bases.
Please check individual panel listings for appropriate
listed bases.
STANDARD FEATURES
• Fully electronic operation
• Power/alarm LED's confirm detector status
• Compatible with Hochiki SLR-24V and SIJ-24
detectors and their bases
• Choice of fixed temperature/rate-of-rise
135°F or 190°F heat detector
• UL Listed spacing up to 60' by 60'
• 2 or 4 wire base compatibility, relay bases available
• Highly stable operation, RF/Transient protection
• Low standby current, 35µA nominal
• Two built-in power/alarm LED's for 360° viewing
OPERATION
The DCD-135/-190 fixed temperature/rate-of-rise heat
detectors are suited to detect in the presence of slow or
fast rising temperatures due to burning combustibles.
The construction of these models incorporate a
thermistor heat element protected from damage by the
built-in, durable plastic guard. These electronic heat
detectors incorporate two power/alarm LED's for 360°
indication of status. In standby condition the power LED's
flash Green. In an alarm condition the LED's latch on
Red. The DCD-135/-190 electronic heat detection
circuitry performs the same function as a Mechanical
Device but with Electronic Precision. If the heat rise is
less than 12°/minute the DCD will not alarm until it
reaches its alarm temperature (135° or 190° ± 7.5°F). If
the heat rise is greater than 12°/minute the DCD will
alarm immediately giving an early warning signal and
latching the Red alarm LED's on.
SPECIFICATIONS
Response Temperature: 135° ± 7.5°F / 190° ± 7.5°F
Rated Voltage: 17.7 - 30.0 VDC
Working Voltage: 15.0 - 33.0 VDC
Maximum Voltage: 42 VDC
Supervisory Current: 40µA @ 24 VDC
Surge Current: 160µA max @ 24 VDC
Alarm Current: 150mA max. @ 24 VDC
Ambient Temperature: 32°F to 120°F(0°C to 49°C)
Contact Rating N/O Contacts:150mA max. @ 24 V
Color & Case Material Bone PC/ABS blend
Mounting Refer to the NS Conventional
Detector Base Data Sheet