Nittan EVC-P User manual

EVCP
CONVENTIONAL
PHOTOELECTRIC
SMOKE DETECTOR
instruction manual
• Ref No: NISM/EVC-P/04 • Date: 23.01.19 • Issue: 4
• evolution • EVC-P • Conventional Photoelectric Smoke Detector
Quality System Certificate No. 041
Assessed to BS EN ISO 9001
NITTAN EUROPE LTD. Hipley Street, Old Woking, Surrey, England, GU22 9LQ. UK
Tel: [phone] • Fax: [phone]
Web Site: www.nittan.co.uk • E-mail: [email protected]

Technical Manual: 0000015 EVC-P (Changes are subject to DCN)
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• Ref No: NISM/EVC-P/04 • Date: 23.01.19 • Issue: 4
• evolution • EVC-P • Conventional Photoelectric Smoke Detector
evolution.....
The EVC-P Photoelectric Smoke Detector forms part of a range of fire
detectors from Nittan Europe Ltd. called evolution.
The EVC-P is an elegantly designed, low profile detector which is
aesthetically pleasing, thus enabling it to blend unobtrusively into modern
working environments.
The EVC-P is compatible with other existing conventional fire detection
systems.

Technical Manual: 0000015 EVC-P (Changes are subject to DCN)
Section 1 - INTRODUCTION
The EVC-P is an attractively-styled, low profile photoelectric smoke
detector for use in conventional fire detection systems.
The EVC-P has a chemically etched, stainless steel insect screen therefore
reducing the ingress of insects and airborne contaminants.
EVC-P features:
• Optical detector, detecting visible particles of combustion
• Low profile, stylish appearance
• Supplied with protective dust cover, (remove
during commissioning)
• Non-polarised terminals
• Unauthorised head removal signal facility
• Low monitoring current
• OMNIVIEW™ 360º LED fire alarm indicator
• Remote indicator output
• Compatible with UB-4, UB-4SD and STB-4SE bases
Section 2 - OPERATION
The smoke chamber of the EVC-P is constructed so that light cannot enter
from outside, but smoke can pass through the chamber slots.
The EVC-P utilises the light scatter sensing principle. The LED pulses every
8 seconds to maintain a low monitoring current. A quick charge time (20
seconds) is also achieved. The detector incorporates an alarm verification
function which requires two successive pulses before an alarm is given.
The interval between the first and second pulse is automatically reduced to
four seconds after the first alarm level is monitored.
The detector design provides strong immunity to air velocities,
contamination and RF interference.
The geometry of the smoke chamber and optics support assembly is
designed to give the best possible signal to noise ratio, resulting in
excellent response characteristics.
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• Ref No: NISM/EVC-P/04 • Date: 23.01.19 • Issue: 4
• evolution • EVC-P • Conventional Photoelectric Smoke Detector
CONTENTS:
Section 1
Introduction Page 3
Section 2
Operation Page 3
Section 3
Detector Models Page 4
Section 4
Base Models Page 4
Section 5
Installation Page 5
Section 6
Maintenance &
Cleaning Page 5-7
Section 7
Specification Page 8
Section 8
Environmental
Parameters: Page 9
- Temperature Page 9
- Humidity Page 9
Section 9
EMC Page 9
Section 10
Connections Page 10
Section 11
Dimensions Page 10
Section 12
Disposal Page 11
Section 13
ROHS Compliance
Statement Page 11

Technical Manual: 0000015 EVC-P (Changes are subject to DCN)
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• Ref No: NISM/EVC-P/04 • Date: 23.01.19 • Issue: 4
• evolution • EVC-P • Conventional Photoelectric Smoke Detector
Section 3 - DETECTOR MODELS
The EVC-P photoelectric smoke detector is supplied, as standard,
with four terminals.
The EVC-P has the facility to activate a remote LED
indicator or auxiliary function, as standard.
The terminals on the EVC-P detector head are configured
as follows:
• Terminal 1 = zone negative in
• Terminal 3 = zone positive in/out
• Terminal 6 = zone negative out
• Terminal 5 = 2 mA @ 24V d.c. switched output
Section 4 - BASE MODELS
A variety of bases are available for use with the EVC-P detector.
It is important to use the correct base for each application.
The standard range available is as follows:
i) UB-4 base: having 4 terminals, for standard use with
EVC-P detector including the auxiliary output function.
ii) UB-4SD base: This is identical to the standard STB-4
base, but also includes a schottky diode for head
removal fault monitoring. The schottky diode is used in
some fire systems to ensure power is maintained, in
the event of an unauthorised detector head removal,
to other detectors further on the zone.
iii) STB-4SE base: Similar to UB-4 base, except deeper.

Technical Manual: 0000015 EVC-P (Changes are subject to DCN)
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• evolution • EVC-P • Conventional Photoelectric Smoke Detector
Section 5 - INSTALLATION
In normal use, the EVC-P detector will be installed at ceiling level.
Pass the field wiring through the cable hole in the centre and from the
rear of the base. Offer up and affix the base to the ceiling or conduit
fitting with screws via the base mounting holes. Connect the field
wiring to the base terminals, as detailed on page 6 making sure the
wiring does not obstruct fitting of the detector head. Fit the detector
head by inserting it into the base and turning clockwise until the notch
in the detector rim aligns with base locking screw.
The OMNIVIEW™ 360º indicator permits visibility from any angle.
Fit the plastic dust cover supplied over the detector to keep out dust
etc, until the system is commissioned. If the dust cover is not fitted and
the environment is slightly dusty, such as when building work is being
completed, for example, problems of false alarms are likely to occur
after commissioning unless cleaning of the detector is undertaken.
At commissioning, the dust cover should be removed and discarded.
NOTE: THE PLASTIC DUST COVER MUST BE RE- MOVED
FROM THE DETECTOR IN ORDER FOR THE DETECTOR TO
FUNCTION CORRECTLY.
Section 6 - MAINTENANCE
AND CLEANING
Maintenance:
The EVC-P detector is a high quality product engineered for
reliability. In order to obtain optimum performance, periodic
maintenance is required. If proper preventative maintenance is not
carried out, there is a likelihood of malfunction, as a dirty detector is
more likely to cause a false alarm.
Servicing:
Servicing of the system should be carried out in accordance with the
requirements of BS 5839 Part 1, Fire Detection and Alarm Systems
for Buildings: Code of Practice for System Design, Installation and
Servicing.

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• Ref No: NISM/EVC-P/04 • Date: 23.01.19 • Issue: 4
• evolution • EVC-P • Conventional Photoelectric Smoke Detector
The maintenance procedures described below should be conducted
with the following frequency:
• One month after installation: Routine Inspection and
every 3 months thereafter.
• Every 6 months: Operational Test
• Every 12 months: Functional Test and
Cleaning.
All above frequencies of maintenance are dependent on ambient
conditions.
Routine Inspection:
i) Ensure the detector head is secure and undamaged.
ii) Check the smoke entry apertures are in no way obstructed.
iii) Ensure the surface of the detector’s outer cover is clean. If
there are deposits due to the presence of oil vapour, dust
etc, then the detector should be cleaned in accordance
with the cleaning instructions detailed later in this
manual. It may be advisable to ensure that such cleaning
is conducted regularly in the future.
iv) Ensure no equipment which may generate combustion
products or fine airborne particles, has been installed in
the vicinity of the detector since the last routine
inspection. If such equipment has been installed,
then you should notify the Fire Safety Officer or other
competant authority that its presence may cause false
alarms.
Routine Inspection:
The purpose of the Operational Test is to confirm the detector’s
correct operation in response to a smoke condition.
i) Take any necessary precautions at the control panel to
limit the sounding of the alarm sounders/bells and any fire
service summoning device.

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• evolution • EVC-P • Conventional Photoelectric Smoke Detector
ii) Introduce a discrete amount of smoke into the detector
head, e.g. using a ‘No Climb -Solo’ smoke test head.
Check that the detector gives an alarm condition within
15 seconds. Check the LED indicator on the EVC-P
detector illuminates and any remote indicator LED fitted
also illuminates.
iii) After the detector has given the alarm condition, reset
the detector from the control panel. It may be necessary
to allow a short time to elapse before resetting the
detector, to allow any residual smoke from the test to
disperse.
iv) Before proceeding to the next detector, ensure that the
detector just tested does not re-operate due to the
presence of residual smoke.
Functional Test:
The detector may be returned to Nittan Europe Ltd. for
functional testing.
Cleaning:
Note: The detector head should NOT be disassembled.
i) Carefully remove the detector head from its base.
ii) Use a soft, lint-free cloth, moistened with alcohol for
sticky deposits, to clean the plastic casing.
iii) Using a soft bristle brush (e.g. an artist’s paint- brush)
carefully brush between the vanes in a linear motion away
from the smoke entry apertures.
iv) It is permissible to blow dust from the chamber,
without removing the cover, using a clean air line.
v) If the unit needs further cleaning, or is damaged or
corroded, please return the complete detector to Nittan
Europe Ltd. for service.

Technical Manual: 0000015 EVC-P (Changes are subject to DCN)
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• evolution • EVC-P • Conventional Photoelectric Smoke Detector
Section 7 - SPECIFICATIONS
Model Reference: - EVC-P
Computer Reference: - F02C82200
Detector Type: - Photoelectric smoke
detector
Sensitivity: - 3% Obscuration per metre
Supply Voltage: - 24V dc nominal
(range 12V to 32V)
Voltage Ripple: - 20% maximum
Alarm Characteristics: - 6V d.c. in series with
375R between
+(terminal 3) and
- (terminals 1,6)
at 25ºC
Monitoring Current: - 40µA max. at 24V d.c.
Alarm Current: - 50 mA. max.
Charging Time: - 20 seconds
Ambient
Temperature Range: - -10ºC to +55ºC
Standard: - EN54-7:2000
EMC Conformance: - BS EN50130-4:1996
(Immunity)
BS EN61000-6-3:2001
(Emissions)
Mass: - 118g (excluding base)
IP Rating: - 41

Technical Manual: 0000015 EVC-P (Changes are subject to DCN)
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• Ref No: NISM/EVC-P/04 • Date: 23.01.19 • Issue: 4
• evolution • EVC-P • Conventional Photoelectric Smoke Detector
Section 8 - ENVIRONMENTAL
PARAMETERS
Temperature Considerations:
Over the range from -10ºC to +55ºC.
Humidity:
Relative Humidity of up to 95%, measured at 50ºC,
non condensing.
Section 9 - EMC
Installation:
The installation shall be in accordance with the regulations either
of the approval body for an approved system, or otherwise, to the
national code of practice/ regulations for the installation of the fire
alarm system, e.g. BS 5839 part 1.
Electromagnetic Compatibility (EMC):
In a site where there is an unusually high level of potential electrical
interference, e.g. where heavy currents are being switched or where
high levels of R.F. are prevalent, care then must be taken in the
type and routing of cables. Particular care should be given to the
separation of zone wiring from the cable carrying the interference.

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• evolution • EVC-P • Conventional Photoelectric Smoke Detector
Section 10 - CONNECTIONS
Section 11 - DIMENSIONS
UB UB
Max.current through
5, 2mA @ 24V dc

Technical Manual: 0000015 EVC-P (Changes are subject to DCN)
Section 12 - DISPOSAL
This symbol on the EVC-P indicates that this product must not be disposed
of with household waste. Instead, it is your responsibility to dispose of your
waste equipment by handing it over to a designated collection point for
the recycling of waste electrical and electronic equipment. The separate
collection and recycling of your waste equipment at the time of disposal
will help to conserve natural resources and ensure that it is recycled in
a manner that protects human health and the environment. For more
information about where you can drop off your waste equipment for
recycling, please contact your local city office or your household waste
disposal service.
Section 13 - ROHS COMPLIANCE
STATEMENT
(RoHS compliant and lead-free)
This product complies with the RoHS (Restriction of Hazardous
Substances) directive.
This product complies with the RoHS (Restriction of Hazardous
Substances) directive which restricts the use of six hazardous materials
in the manufacture of electronic and electrical equipment.
This product complies with the European Union RoHS (Restriction of
Hazardous Substances) directive 2002/95/EC which restricts the use
of the following six hazardous materials in the manufacture of electronic
and electrical equipment.
• Lead (Pb)
• Hexavalant Chromium
• Mercury (Hg)
• Cadmium (Cd)
• Polybrominated biphenyls (PBB’s)
• Polybrominated diphenyl ethers (PBDE’s)
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• Ref No: NISM/EVC-P/04 • Date: 23.01.19 • Issue: 4
• evolution • EVC-P • Conventional Photoelectric Smoke Detector