United Technologies DET-TRONICS SmokeWatch U5015 User manual

3.4 95-8723
Instructions
Det-Tronics®SmokeWatch™Explosion Proof Smoke Detector
U5015

Table of Contents
OVERVIEW ..........................1
FEATURES ..........................1
BENEFITS ...........................1
SPECIFICATIONS .....................2
OPERATION .........................3
Warm Up ..........................3
Outputs ...........................3
Integral Wiring Compartment ..........4
LED ..............................4
Latching...........................4
Non-Latching.......................4
Continuous Self-Test.................4
Manual Self-Test ....................4
IMPORTANT SAFETY NOTES ...........5
INSTALLATION .......................5
Grease / Lubrication .................5
Identication of Detector Mounting
Locations..........................5
Protection Against Moisture Damage....6
Power Supply Requirements ..........6
Transport Cover ....................6
Mounting Location Options............6
Mount the Detector ..................7
Wiring Cable Requirements ...........7
Jumper ...........................7
Wiring Procedure ...................8
MAINTENANCE .......................9
Routine Inspection ..................9
DEVICE REPAIR AND RETURN.........13
ORDERING INFORMATION ............13
Spare Parts .......................13
Accessories.......................13
U5015 Model Matrix ................13
APPENDIX A – FM APPROVAL
DESCRIPTION ....................14
APPENDIX B – CSA APPROVAL
DESCRIPTION ....................15
APPENDIX C – IECEx APPROVAL
DESCRIPTION ....................16
APPENDIX D – ADDITIONAL APPROVALS
DESCRIPTION ....................17

195-8723 3.4
WARNING
Be sure to read and understand the entire
instruction manual before installing or
operating the smoke detection system. Any
deviation from the recommendations in this
manual may impair system performance
and compromise safety.
OVERVIEW
The Det-Tronics®SmokeWatch™U5015 Explosion
Proof Smoke Detector has Division and Zone
explosion-proof ratings and is suitable for industrial
and commercial applications. The detector is
designed to operate effectively with smoldering
and rapidly growing fires and contains the ability to
annunciate fault ensuring no undisclosed failures.
The SmokeWatch U5015 Smoke Detector outputs
include 0-20 mA, a localized LED, and relays.
Typical applications that use the U5015 include:
– Combustible storage facilities
– Munitions manufacturing
– Volatile chemical storage
– Chemical processing plants
– Petroleum refineries
– Turbine enclosures
– Battery rooms
– HVAC applications
The hot-swappable sensor module is intrinsically
safe and allows live maintenance while under
power, without de-classifying the hazardous area.
The integrated junction box is available in a
variety of port configurations for simplified wiring
and installation. See Figure 1 for all the U5015
Smoke Detector components.
FEATURES
• FM Approved for use in Class I, Division 1
hazardous locations
• FM Approved for smoke detection performance
• IECEx Zone approved
• Trouble-free photoelectric operation
• 0-20 mA output for DCS integration
• Self-checking circuitry ensures reliable smoke
detection
• Alarm, Auxiliary, and Fault relays for controlling
annunciating devices or fire panel interface
• LED provides a visual indication that an alarm
has occurred
• IP44 ingress protection level suitable for
onshore or offshore requirements
BENEFITS
• Ideally suited for classified areas in the
petrochemical, oil, and gas industry
• DCS, PLC, integration with milliamp or relay
outputs
• Rugged design for environmental extremes
• Visual confirmation of detector alarm
• Detects smoldering fires
• No undisclosed failures
INSTRUCTIONS
Det-Tronics
®
SmokeWatch™
Explosion Proof Smoke Detector
U5015
©Detector Electronics Corporation 2019
Last Manual Update: 5/30/19

95-8723
2
3.4
SPECIFICATIONS
OPERATING VOLTAGE—
12-30 Vdc (24 Vdc nominal)
SMOKE DENSITY—
1.5% - 2.5% obscuration per foot.
(4.9% - 8.2% obscuration per meter).
POWER CONSUMPTION—
3.5 watts maximum (2.75 Watts at 24 Vdc)
0.674 Watts with no relays energized.
1.23 Watts with one relay energized.
2.12 Watts with two relays energized.
2.68 Watts with three relays energized.
OUTPUT RELAYS—
Smoke alarm relay, Form C, 5 amperes at 30 Vdc:
The smoke alarm relay has normally open/
normally closed contacts and normally de-
energized operation.
Fault relay, Form A, 5 amperes at 30 Vdc:
The fault relay has normally open contacts and
normally energized operation.
Auxiliary relay, Form C, 5 amperes at 30 Vdc:
The auxiliary relay has normally open/normally
closed contacts and normally de-energized
operation.
TEMPERATURE RANGE—
Operating: –20°C to +65°C (–4°F to +149°F)
Storage: –55°C to +70°C (–67°F to +158°F ).
HUMIDITY RANGE—
5 to 95% relative humidity.
INGRESS PROTECTION—
IP44
Note: Applicable to ceiling mount only
CURRENT OUTPUT—
0-20 mA (±0.3 mA) dc current, with maximum
loop resistance of 300 ohms from 12-17.9 Vdc,
500 ohms from 18 to 19.9 Vdc, and 600 ohms
from 20-30 Vdc.
TERMINALS—
UL/CSA rated for 14-18 AWG or 2.5-0.75 mm2wire.
THREAD OPTIONS—
3/4 inch NPT or M25.
Multi-port models available.
ENCLOSURE MATERIAL—
Polycarbonate / ABS - Smoke Detector.
Copper-free aluminum (painted) - Junction Box
SHIPPING WEIGHT (Approximate)—
7.85 lbs (3.56 kg).
WARRANTY PERIOD—
1 year.
DIMENSIONS—
See Figure 2.
CERTIFICATION—
For complete approval details, refer to the
appropriate Appendix:
Figure1—U5015 Components
I.S. SENSOR MODULE
RETAINING RING
LED
A2679
JUNCTION BOX
FM
APPROVED
®

395-8723 3.4
Appendix A - FM
Appendix B - CSA
Appendix C - IECEx
Appendix D - Additional Approvals
OPERATION
WARM UP
When the detector is initially powered up, a warm-
up period of one – two seconds is allotted for
internal checks and communication. During this
time, the LED is off and the current level is 3 mA.
After the checks are completed, normal operation
will be indicated by the LED flashing every four
seconds (current level is 4 mA).
If the detector is unable to reach the normal
operating mode, the warm-up period may extend
to five seconds, followed by a critical fault or an
advisory fault (see Table 1 for all current levels).
If the problem persists, check for any loose wiring
connections, ensure that the voltage supply is
sufficient, and cycle power if necessary.
OUTPUTS
Relays
The U5015 detector is furnished with smoke
alarm, fault, and auxiliary relays. All three
relays are rated to 5 amperes at 30 Vdc.
The smoke alarm relay has a single set of
terminals and normally open / normally closed
contacts, and normally de-energized operation.
The fault relay has a single set of terminals
and normally open contacts, and normally
energized operation.
The auxiliary relay has a single set of terminals
and normally open / normally closed contacts,
and normally de-energized operation.
IMPORTANT
The auxiliary relay functions as pre-alarm.
0 to 20 mA Output
The U5015 provides a 0 to 20 mA dc current for
transmitting detector status information to other
devices. The circuit is wired in a non-isolated
configuration and can drive a maximum loop
resistance of 300 ohms from 12 to 17.9 Vdc, 500
ohms from 18 to 19.9 Vdc, and 600 ohms from
20 to 30 Vdc. Table 1 defines the current levels
and corresponding detector status. The output
is calibrated at the factory, with no need for field
calibration.
NOTE
The output of the 0 to 20 mA current loop
is monitored by the fault detection circuitry
of the U5015. Therefore, an open circuit on
the loop will cause the fault relay to change
state.
An alarm will normally over-ride a fault, unless
the nature of the fault impairs the ability of
the detector to generate or maintain an alarm
output (i.e., loss of operating power).
Figure2—U5015 Dimensions in Inches (cm)
4.99 (12.67)
B2680
7.55 (19.18)
2X 3.80 (9.65)
6X R0.19
2X 1.75
(4.44)
2X 2.25 (5.71)
3.75 (9.52)
4X 1.29 (3.27)
2X 2.50 (6.35)
7.55 (19.18)
Table1—Detector Status Conditions Indicated by Current Level
Current Level (±0.3 mA) Detector Status
0 mA Power Fault
1 mA Critical Fault
2 mA Power Advisory (<12 Vdc)
3 mA Warm up
4 mA Normal
6 mA Advisory Fault
16 mA Pre-Alarm
20 mA Smoke Alarm