www.velocitydetection.com Doc: GLT-311-7-1 Issue: 001 Date: 28/10/2020
VDOT-U5015 Explosion Proof Smoke Detector
IMPORTANT SAFETY NOTES
CAUTION
The wiring procedures in this manual are intended to ensure
proper functioning of the device under normal conditions.
However, because of the many variations in wiring codes and
regulations, total compliance to these ordinances cannot be
guaranteed. Be certain that all wiring complies with the NEC
as well as all local codes. If in doubt, consult the authority
having jurisdiction before wiring the system. Installation
must be done by a properly trained person.
CAUTION
This product has been tested and approved for use in
hazardous areas. However, it must be properly installed and
used only under the conditions specified within this manual
and the specific approval certificates. Any device modification,
improper installation, or use in a faulty or incomplete
configuration will render warranty and product certifications
invalid.
CAUTION
The device contains no user serviceable components. Service
or repair should never be attempted by the user. Device
repair should be performed only by the manufacturer.
CAUTION
The U5015 is to be installed in locations where the risk of
mechanical damage is low.
LIABILITIES
The manufacturer’s warranty for this product is void, and all
liability for proper function of the detector is irrevocably
transferred to the owner or operator in the event that the
device is serviced or repaired by personnel not employed or
authorized by Detector Electronics Corporation, or if the
device is used in a manner not conforming to its intended
use.
NOTE
Observe precautions for handling electrostatic sensitive
devices.
NOTE
The U5015 should not be installed in areas in which
Ammonia, Hydrogen Sulfide and Chlorine are normally
present.
INSTALLATION
WARNING
All entries must contain appropriately rated plugs or fittings.
It is required that each plug or fitting be wrench-tightened to
an appropriate installation torque and meet the minimum
thread engagement requirements per the applicable local
standards, codes, and practices in order to retain the defined
ratings. PTFE sealant or equivalent should be used on NPT
threads.
NOTE
Detector housings must be electrically connected to earth
ground. Internal and external earth ground terminals are
provided. For AEx (United States Zone) installations the
internal ground terminal shall be used for the equipment
grounding connection. The external terminal can be used for
supplementary bonding where local codes permit or require.
NOTE
The U5015 detector uses an internal Intrinsically Safe (I.S.)
Barrier. Proper NEC I.S. grounding must be ensured
GREASE/LUBRICATION
To ease installation and future removal, all threaded covers,
stopping plugs, and thread adapters must be installed using
thread lubricant. The recommended lubricant is a silicone-free
grease, available from Det-Tronics.
For devices with NPT threads, Teflon tape or thread seal
lubricant must be used for enhanced sealing capabilities.
IDENTIFICATION OF DETECTOR MOUNTING
LOCATIONS
The most effective number and placement of detectors varies
depending on the conditions on site. The individual designing
the installation must often rely on experience and sound
judgment to determine the detector quantity and best
locations to adequately protect the area. Note that it is
typically advantageous to locate detectors where they are
accessible for maintenance.
For additional information on detector location and spacing,
visit the National Fire Protection Association's website
(www.nfpa.org) and refer to the National Fire Alarm and
Signaling Code, NFPA 72.
