E218.302

ESN.I.O..

Carbon Monoxide detectors

for homes, recreational vehicles and similar sites

Conformity standard UNI CEI 70032

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Electronic carbon monoxide detectors with time-varying alarm threshold and two calibration points for homes, recreational vehicles and similar sites.

230Vac, 12Vac/dc or 12…24Vac/dc power supply, depending on the model.

Relay command output with double insulation voltage free contact, so suitable for any kind of solenoid valve or other command and alarm device.

Possibility of parallel connection of more than one detector, also for monitoring different gases.

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Use

The ESN.I.O.. detectors can be used to provide a visual/audible alarm and to control other alarm transmitters or actuating devices, in the presence of carbon monoxide concentrations that pose a hazard to humans from gas poisoning.

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Operation

Gas detection

The detector will enter a warm-up phase after power-up; this will take about 60" and during this time the detector is inoperative. At the end of the warm-up phase, the detector enters normal operation mode, and will continue in this state until it detects gas.

The monitoring algorithm used for gas detection is “time-varying alarm threshold” that considers both the concentration of the gas and the time it is detected. A threshold level one, set at 100ppm

(1)

sets off the time meter; if the concentration remains at this value the alarm will activate after 12 minutes; at 300 ppm, the detector will enter alarm condition after the concentration remains at this level (or at a higher level) for only 12 seconds. Concentration values of between 100 and 300ppm require proportionately intermediate times of between 12 seconds and 12 minutes.

Once the alarm condition ceases to exist, or the level descends to below 11ppm, for a given time that depends on how quickly the concentration descends, the detector will be restored to normal operation.

(1) ppm = parts per million of concentration of gas in the air.

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Available models and ordering information

Power supply

Detector

Recessed

Wall-mounted

230Vac

ESN.I.O.x

ESN.I.O.x + ESN.KW

12Vac/dc

ESN.I.O.x.D

ESN.I.O.x.D + ESN.KW

12…24Vac/dc

ESN.I.O.x.E

ESN.I.O.x.E + ESN.KW

Table-top ESN.I.O.x + ESN.KT ESN.I.O.x.D + ESN.KT ESN.I.O.x.E + ESN.KT

Table-top (precabled) ESN.I.O.x + ESN.KC ESN.I.O.x.D + ESN.KC ESN.I.O.x.E + ESN.KC

The letter A or B inserted in field x of the product order number indicates the type of detector, i.e.:

A = with relay command output B = without relay command output (visual/audible alarm)

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EsiWelma s.r.l.

rev. 02 of 01-09-10 / pg. 1

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Operational table

Outputs LED

GREEN

LED

YELLOW

LED

RED

BUZZER RELAY

Detector status

Off

Initial test for LEDs and buzzer (1s.)

Visualisation Firmware Version (5s.)

Sensor warm-up (60 seconds)

Normal operation

Sensor fail (after 30 seconds)

OFF

ON

A

ON

ON

OFF

ON

See Table 1

OFF

OFF

B

OFF

ON

A

OFF

OFF

OFF

C

OFF

OFF

OFF

D

OFF

OFF

OFF

OFF

OFF

ON

Alarm ON OFF B B ON

Operational test (30 seconds) Divided into two parts:

•

First 25 seconds ON

•

Last 5 seconds:

Key: ON = steady on / activated / switched

A = the two LEDs flash alternatively at 1Hz

C = Short sound of Buzzer (Beep)

B

See Table 1

B B

OFF

ON

ON

OFF = off / deactivated / not switched

B = the LED/Buzzer flashes/sounds every 1Hz

D = the Buzzer sounds every 0.5Hz (slow)

Table 1

Firmware version 1 2 3 4 5 6 7

GREEN LED

YELLOW LED

ON

OFF

OFF

ON

OFF

ON

OFF

OFF

ON

OFF

OFF

ON

ON

ON

RED LED OFF OFF ON ON ON ON ON

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Installation and

Commissioning

Installation

Ensure compliance with standards in force for electrical wiring. The devices must be connected to the mains and remain permanently powered. Omnipolar disconnection must be included in the mains.

The installation of a detector must not be a substitute for the correct installation, use and maintenance of combustible gas appliances and equipment and for ventilation and exhaust systems for fumes.

Carefully read the instructions and electrical wiring diagrams in this document and follow them to the letter.

Keep this document in a safe place for future consultation.

The device must be installed by qualified technicians.

Since carbon monoxide weighs the same as air, it will be concentrated near the same height as the appliance that manifests combustion defects or that is located in premises with insufficient ventilation.

Install about 2 metres (minimum 1 metre, maximum 3 metres) from the gas-operated appliance and at standard face height of the occupants in those premises; example: 130…...170cm in a kitchen, 50...…100cm in a bedroom.

The detector must not be installed:

• outdoors

• too close to stoves, cooking appliances and, more in general, to gas appliances

• near sinks and taps

• near exhaust hoods, windows, fans etc.

• in areas where dirt and/or dust can clog the front grille of the detector

• where the temperature or humidity exceeds the detector's operating limits

• in closed spaces (behind curtains, inside cupboards etc.). depending on the model purchased, the detector can be mounted:

1. directly in type 503 recessed mounting box

2. screwed onto the wall with adapter ESN.KW

3. placing the device on a side table / shelf in the table-top version, using adapter ESN.KT/KC.

Before fixing the detector to box 503 or to adapter ESN.KW or ESN.KT/KC, the bracket needs to be adjusted to the backing plate selected from major manufacturers of recessing equipment (see Table 2) and, if necessary, two side adapters need to be inserted to cover the side gap created when using some plates.

After mounting is completed, fix the detector to box box 503 or to adapter ESN.KW or ESN.KT/KC and press firmly on the front plate.

Make sure you fill in the detector replacement date on the self-adhesive label provided and stick it in a visible position on the detector after installation.

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EsiWelma s.r.l.

rev. 02 of 01-09-10 / pg. 2

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Table 2

Manufacturer:

Side

adapters

Tabs to

remove

AVE

SISTEMA 45 and BANQUISE

BTICINO

Living international and Light

GEWISS

PLAYBUS and PLAYBUS Young

YES

NO

YES

None

A

A

SIEMENS

YES A

DELTA FUTURA GRAPHIT

Commissioning

VIMAR

YES B

IDEA and RONDO’

Power up the detector and check that all the warm-up and normal operation phases are executed.

Carry out an operational response test by pressing the button on the front to check the correct engagement of the solenoid valve or other command and/or alarm device connected to the relay; it is advisable to repeat the operational test at least once a year, or after a prolonged period of stoppage.

If other test methods are used instead of the one described the detector may generate different, unexpected responses. In particular, the use of inappropriate substances or vapours (alcohol or silicon-based solvents etc.) or in any case, high concentrations of test gases could cause permanent damage to the sensing element and may cause the detector to operate incorrectly.

The detector needs no periodic maintenance, with the exception of the periodic operational test and its replacement 5 years after the installation date.

Do not tamper with or open the device: danger of electric shock and/or malfunction.

Use a wet cloth and mild detergent to periodically clean the device.

Do not use aggressive detergents like alcohol, ammonia, solvents etc.

Before cleaning the detector, switch off the system power supply to avoid the risk of electric shock.

The detector and its sensing element have been designed for ongoing use in areas where there is permanent Warning occupation by people, so normally pollution-free.

The presence of gases or vapours from some substances such as alcohol, silicons or solvents found in some detergents or polishes, or from the fumes generated by cooking may cause inappropriate action of the detector and in the long term could affect the reliability of the device.

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Effects of carbon monoxide on the human body

Carbon Monoxide (CO) is a colourless, odourless and non-irritating gas that is classified as a chemical asphyxiant whose toxic action is the direct result of hypoxia (oxygen deprivation) caused by exposure to it.

Carbon Monoxide is also rapidly absorbed by the lungs and is spread through the pulmonary alveolus where it reversibly binds with the haemoglobin as carboxyhaemoglobin (COHb).

If the CO level in the air inhaled is constant, the level of COHb in the bloodstream will approach a state of equilibrium after a few hours. Still, the speed of that equilibrium depends on a number of factors such as the individual's state of health, but the two most important factors are the concentration of CO and the time of exposure to the gas.

Typical effects of exposure to CO (at concentrations and exposure times over the ones that set off the detector) are, in growing order of concentration and/or time:

•

Slight headache, weakness and, if pregnant, possible effect on foetus

•

Strong headache, nausea, loss of movement in hands

•

Strong headache, irritability, confusion, loss of vision, muscle weakness, dizziness

•

Convulsions and loss of consciousness

•

Coma, respiratory arrest, death.

The action of the detector cannot protect individuals in particular risk categories such as people who suffer from cardiovascular disease, hyperthyroidism, respiratory disease etc

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In the event of alarm

If an alarm goes off, stay calm, put out flames, switch off the gas or LPG cylinder at the meter, switch off all gas heating appliances such as gas stoves etc., open doors and windows to increase the flow of fresh air.

If the alarm stops, it is necessary to find out what set it off and take consequent action.

If the alarm continues and the reason for the presence of carbon monoxide cannot be determined or eliminated, leave the building and contact the gas supply maintenance service of emergency services.

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EsiWelma s.r.l.

rev. 02 of 01-09-10 / pg. 3

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Technical specifications

Power supply (see available models)

Frequency

Consumption

Command outputs

1 st

and 2 nd

alarm threshold

Threshold limit value

Operational lifetime of a detector

Max detectable area

Visual warnings

230Vac

±

10% or 12Vac/dc

±

10% or 12…24Vac/dc

50/60Hz

2 VA

SPDT relay - capacity of the contact 250Vac 5(3)A

100 and 300ppm

(1)

of Carbon Monoxide

Between 12m and 12s at 100ppm and 300ppm, respectively

5 years from installation approx. 40 m

2

Green LED (power is on)

Yellow LED (warm-up / sensor fail)

Red LED (gas alarm)

Piezoelectric buzzer 85dB at 1m

IP42 when correctly installed

Audible alarms:

Protection Rating

Product conformity standard UNI CEI 70032

EMC Electromagnetic Compatibility

Low voltage (LVD)

Operational room temperature

Ambient humidity allowed:

EMC 2004/108/EC – EN50270

LV 2006/95/EC – EN60669-1

-10...+40 °C (storage –20…...+70 °C)

30... 90% RH (storage 0...+95% RH) (non condensing)

Dimensions For installation in 503 type recessed mounting box

•

142 x 100 x 72mm with ESN.KW wall-mounting adapter

•

142 x 120 x 100mm with ESN.KT/KC table-top adapter

Enclosure ABS/PC UL94-V0 flame retardant

(1) ppm = parts per million of concentration of gas in the air.

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Connection diagrams

Wiring diagrams:

Example a): - Command of a solenoid valve (Normally Open); in this mode, when the alarm threshold is exceeded the solenoid valve will close and therefore the gas supply will be cut-off.

Example b): - Command of a solenoid valve (Normally Closed) and of visual and audible alarms; in this mode, the solenoid valve will close and therefore the gas supply will be cut-off: when the alarm threshold is exceeded, if there is a power failure and if the actual solenoid valve is disconnected.

230Vac or 12Vac/dc or 12…24Vac/dc 230Vac or 12Vac/dc or 12…24Vac/dc a)

4

5

ESN.I.O..

2

1 3

NA b) 4

5

ESN.I.O..

2

1 3

NC

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Installation data

Installation site

To be filled in by Installer Installer's stamp

……………………………………………………………….

Product order number

……………………………………………………………….

Part number

……………………………………………………………….

Installation date

……………………………………………………………….

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EsiWelma s.r.l.

rev. 02 of 01-09-10 / pg. 4