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Summary of Contents for Duomo CHCO
- Page 1 Rev. 3. -02/2019 Instruction Booklet Product: Duomo CHCO Natural Gas and Carbon Monoxide detector - TYPE A THIS IS AN IMPORTANT DOCUMENT. IT CONTAINS INFORMATION REGARDING: INSTALLATION, SAFE AND PROPER OPERATION AND REGULAR CHECKING OF THIS NATURAL GAS AND CARBON MONOXIDE DETECTOR.
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Page 2: Table Of Contents
It is a fixed, wall mounted system with a permanently connected 230 Volt electrical supply. The CHCO is fitted with an output function for trig- gering different ancillary devices, for example Gas Shut-off valve. If the apparatus is installed in homes... -
Page 3: Layout And Key To Components
On Light. This light flashes as soon as power is applied. After 100 seconds the light stops flashing and is permanently lit until power is disconnected. Note: During the diagnostic warm up phase the CHCO will not detect gas. Fault Light. Becomes lit when either the Natural Gas or the CO sensor element becomes inoperative. -
Page 4: Positioning The Chco
5. Positioning the CHCO Ideally, a CHCO should be installed in every room containing a gas appliance. If this is not practicable, the gas detector should be installed in the room where a gas escape is most likely to occur; this would typically be the kitchen, due to the presence of a gas cooker and other gas appliances. -
Page 5: Typical Wiring Schematic
Remove the test gas, the detected level of gas will drop and the CHCO will auto-reset. That is to say the alarm relays will return to the no gas position. Note: Although the power supply is reinstated to the Gas valve, due to the type of valve to be used with this detector (Manual Reset Only). -
Page 6: Ventilation Fan Important Note
CHCO detector increase ventilation by open doors paired by airflow from inside to outside. or windows. - Page 7 In the event of a Gas Alarm sounding and the If CHCO initiates a Carbon monoxide alarm ALARM GAS light being lit on the CHCO detec- signal, and the ALARM CO light is lit, it is tor Fascia or the smell of gas even without an...
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Page 8: Maintenance
Such possibilities should be fully investigated when installing the apparatus. e) The CHCO provides an output signal which may be used to activate an ancillary device, such as a ven- tilation fan or gas shut-off valve. Once triggered, these devices may need to be manually reset, but this should not be done until the source of carbon monoxide or fuel gas escape has been identified and the fault corrected. - Page 9 16. Declaration of Conformity Droitwich, Worcestershire, WR9 9AH. DECLARATION OF CONFORMITY Natural gas & Carbon Monoxide detector Art. CHCO It conforms to the following regulations: Electromagnetic compatibility (2014/30/EU – EMC) according to CEI-EN50270:2006 “Electromagnetic compatibility. Electrical apparatus for the detection and measurement of combustible gases, toxic gases or oxygen”...
- Page 10 “end of life” of the product Duomo (UK) Limited, 5 The Furlong, Berryhill Industrial Estate, Droitwich, Worcestershire, WR9 9AH, England, United Kingdom. Telephone: 01905 797989 Email: sales@duomo.co.uk website: duomo.co.uk...
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