HOCHIKI INTRINSICALLY SAFE SMOKE AND HEAT DETECTORS (AND
MOUNTING BASE) INSTALLATION INSTRUCTIONS
Products covered: SLR-E-IS, SLR-E-IS(WHT) Photoelectric Smoke Detector, DCD-1E-IS
Combined Rate of Rise Heat Detector, YBN-R/4(IS) Electronics-Free Mounting Base
Introduction
These Detectors are certified by BASEEFA as suitable for use in hazardous atmospheres as detailed below. It is
essential that the detectors and base are installed and operated in conformance with the certification in order to remain
safe. It is the responsibility of the installer to ensure that the detectors and base are installed according to the certification
requirements, and it is recommended that the installation only be carried out by qualified personnel.
The YBN-R/4(IS) Base may only be used with Hochiki Intrinsically Safe specified detector heads. The use of other
detector heads is expressly forbidden and may cause fire or explosion.
Classification – SLR-E-IS & SLR-E-IS(WHT)
This Detector has BASEEFA certification classification according to EN 60079-11:2012 and an ATEX Classification of II 1
G Ex ia IIC T5 -20°C<Ta<55°C. Areas suitable for installation: Category 1, 2 or 3 hazardous atmospheres, with a
maximum ambient temperature of up to 55°C.
Classification – DCD-1E-IS
This Detector has BASEEFA certification classification according to EN 60079-11:2012 and an ATEX Classification of II 1
G Ex ia IIC T5 -20°C<Ta<55°C. Areas suitable for installation: Category 1, 2 or 3 hazardous atmospheres, with a
maximum ambient temperature of up to 55°C.
Refer to the system drawing overleaf for important information concerning installation/wiring requirements which must be
strictly observed in order to comply with BASEEFA certification. These detectors and base MUST be used with either a
Zener Diode Barrier or a Galvanic Isolator, using suitable models as detailed in the system drawing overleaf. The Zener
Diode Barrier or Galvanic Isolator should be installed according to the manufacturer's instructions.
Note
These products have been designed to:
❑ Avoid physical injury or harm by direct or indirect contact
❑ Not produce surface temperatures of accessible parts or radiation which could cause danger
❑ Eliminate any non-electrical dangers
❑ Not give rise to dangerous conditions in the event of overload
Precautions
Hochiki smoke and heat detectors cannot be used to prevent a fire itself, they are intended only to detect certain
characteristics of fire. When installing the detectors, check that the location of each one has been planned according to
appropriate fire regulations and recommendations.
Hochiki detectors are suitable for indoor use only. A detector should not be installed in the following environmental
conditions:
❑ Excessive ambient temperature.
❑ Where excessive condensation or moisture is present.
❑ Where corrosive gas or any other harmful agent is present.
❑ Where flammable dust or steam is present.
❑ Where obstructions are present which could impede the flow of air to the detector.
❑ Where mechanical stresses could affect the detector when fitted in accordance to these instructions.
Hochiki Europe (UK) Limited
2-3-0-345/ISS11/SEPT19
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