Siemens INTELLIGAS LYA14 Series User manual

Siemens SpA
Building Technologies
CE1N7609e / 11-07-2008
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s
7609
INTELLIGAS®
Gas leak detectors
for residential and similar use
In conformity with Standard EN50194 LYA14..
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Electronic gas leak detectors with one threshold for residential use. 230VAC power
supply, SPDT relay output suitable for 230VAC solenoid valve or other signalling or
activating devices.
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The LYA14.. detectors have been engineered to provide both optical and acoustical alarm
and activate a solenoid valve for shutting off the gas flow (or other auxiliary devices) in
presence of dangerous concentration of:
•methane (CH4)
•LPG
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When the detector is supplied with 230VAC, it runs a preheating phase that lasts about 60s.
During this period the detector is inactive. After the preheating phase the detector enters in
normal operating condition. In case of a gas leak, when the gas concentration in the air
exceeds the preset threshold, the detector signals the alarm condition lighting on the red
LED, activates the buzzer and energises the internal relay for closing the manual reset
solenoid valve in order to cut the flow of gas. When the cause of alarm has been removed,
the detector returns to normal operation. To re-establish the normal gas supply condition it
is necessary to open manually the solenoid valve acting on its appropriate reset device.
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Description : Type :
Methane gas (CH4) detector LYA14.G
LPG detector LYA14.P
Use
Operation
Available
models

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Outputs
Detector
GREEN
LED
Y
ELLOW
LED
RED
LED
RELAY BUZZER
OFF (no power supply) OFF OFF OFF OFF OFF
Preheating (60s) ON ON OFF OFF OFF
Normal operation ON OFF OFF OFF OFF
Gas alarm ON OFF ON ON ON
Sensing element fault ON ON OFF OFF OFF
ON = lit / activated
OFF = off / deactivated
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The LYA14... detectors consist of two parts: an ABS self-extinguishing housing with a
removable cover and a part containing the electronic circuit, terminals and sensing element.
There are three LEDs on the cover: green, yellow and red for indicating normal operation,
preheating/sensor failure and gas alarm, respectively. The detectors are factory-calibrated
to assure intervention at gas concentrations below the dangerous limit.
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The installer must respect the existing standards concerning the electrical connections. The
detector must be directly connected to the mains (without any switches) and be permanently
powered on.
The detectors must be replaced after 5 years from the date of installation.
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Indicate the complete item code of the detector (see also “AVAILABLE MODELS”).
LYA14.G
LYA14.P
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Read carefully the instructions provided with the detector. Keep it in a safe place for future
use. Respect all the existing regulations concerning the installation of electrical equipment.
Functional
table
Features
Installation
recommendations
Ordering
Commissioning
electromechanical buzzer
sensing element
230VAC power supply
terminals
green LED (power supply)
screw for cover lock
yellow LED
(preheating / sensing elem. fail)
red LED (gas alarm)
openings for
cable input
hole for wall mounting
hole for wall mounting
relay output

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This product was developed and manufactured using materials and processes which take
full account of environmental issues and which comply with our environmental standards.
Please note the following for disposal at the end of the product life, or in the event of its
replacement:
•For disposal, this product is defined as waste from electrical and electronic equipment
(“electronic waste”); do not dispose of it as household waste. This applies particularly to
the PCB assembly.
•Always use the most environmentally compatible method of disposal, in line with the
state-of-the-art technology in environmental protection, recycling, and waste
management..
Observe all local and applicable laws.
•Always aim for maximum re-use of the basic materials at minimum environmental
stress. Observe any notes on materials and disposal that may be attached to individual
components.
•Use local depots and waste management companies, or refer to your supplier or
manufacturer to return used products or to obtain further information on environmental
compatibility and waste disposal.
The LYA14.. is delivered in re-usable packaging. Please retain the packaging for later use
or in case you need to return the product to the manufacturer.
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Power supply 230VAC +10/-15%
Frequency 50/60 Hz
Consumption 4 VA
Output signal SPDT relay 250V 5(3)A
Type of solenoid valve
(see data sheet n° 7684)
N.O. type E..E-AC (230VAC) or
N.C. type E..D-AC (230VAC)
Alarm threshold
LYA14.G 9 % LEL of methane (*)
LYA14.P 9 % LEL di LPG (*)
Lifetime (average) 5 years from installation date
Max surface covered about 40 m2(indicative)
Optical signals green LED (power supply on)
yellow LED (preheating / sensor failure)
red LED (gas alarm)
Acoustic signal electromechanical buzzer 85dB at 1m
Protection degree IP42 when correctly installed
Product standard
- conformity
Electromagnetic compatibility EMC
Low voltage directive LVD
EN50194
89 / 336 / EEC – EN50270
73 / 23 / EEC – EN60335-1
Admissible room temperature 0...+40 °C
Admissible room humidity 30... 90% U.R. without condensation
Dimensions 139mm x 98mm x 40mm
Housing ABS/PC UL94-V0 self-extinguishing
(*) LEL= Lower Explosivity Limit
Environmental
compatibility
and disposal
Packaging
Technical data

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Diagram 1:
LYA14.. detector with 230VAC N.O. solenoid valve type E..EAC
N1 = LYA14..
Y1 = 230VAC N.O. solenoid valve type E..EAC
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Diagram 2:
LYA14.. detector with 230VAC N.C. solenoid valve type E..DAC
Optional buzzer or signalling lamps.
N1 = LYA14
Y1 = 230VAC N.C. solenoid valve type E..DAC
L1 = 230VAC signalling lamp
H1 = 230VAC buzzer
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4098
139
LYA14.G
Dimensions in mm
Subject to modification
Connection
diagrams
Dimensions
Y1
N1
L
N
230V AC
N
M
L
LYA14..
NC NO
C
Y1
230V AC
N
M
L
N1
L
N
LYA14..
NC NO
C
H1 L1