5
95-8723
3.4
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.
