{"schemaVersion":1,"slug":"smoke-detection-ventilation-interface","name":"Smoke-detection ventilation interface","kind":"symbol","abbreviation":"SVI","aliases":["Switchroom fire and emergency interfaces","switchrooms Switchroom fire and emergency interfaces","switchrooms","Switchrooms","Assigned smoke signal","Documented ventilation response"],"category":"installation-communications","drawingTypes":["Schematic"],"referenceFamilies":["Manufacturer"],"summary":"Relates the designated smoke-detection signal to its assigned ventilation cause-and-effect action.","description":["Relates the designated smoke-detection signal to its assigned ventilation cause-and-effect action. A fire-system interface passes defined indications and control requests between the fire installation and electrical equipment. The receiving circuit must identify the exact purpose of the signal and the equipment it affects.","In a switchroom, the fire panel may report detection, system faults and a separately documented shutdown request to the station controller. These signals have different meanings and must not be combined into one unexplained alarm. For this reference, the drawing identifies “Assigned smoke signal” at the input and “Documented ventilation response” at the output. The required response is site-specific.","Use the coordinated fire cause-and-effect schedule to define each response. Original interface blocks describe signal roles without specifying suppression operation, evacuation behavior or life-safety performance. The functional block is an independent explanation of this named application. Equipment-specific ratings, terminal connections and operating conditions must be established in the project documentation."],"readingNotes":["Start at the named input: Assigned smoke signal. Identify its source device or document and the state represented on the drawing.","Follow the named output: Documented ventilation response. Cross-reference its destination and separate the command from confirmation that the equipment responded.","The required response is site-specific.","Use the coordinated fire cause-and-effect schedule to define each response. Original interface blocks describe signal roles without specifying suppression operation, evacuation behavior or life-safety performance."],"drawingChecklist":["Label the source and connection reference for assigned smoke signal.","Identify the destination and defined state of documented ventilation response.","Record the equipment or control-document revision supporting this functional block.","Check this application limit in the project design: The required response is site-specific."],"distinction":"The required response is site-specific. This reference describes the named application; it does not establish a new IEC graphical symbol, an ANSI device-function number or an exact manufacturer connection diagram.","facts":[{"label":"Representation","value":"Functional block"},{"label":"Installation focus","value":"Switchrooms"},{"label":"Input / boundary","value":"Assigned smoke signal"},{"label":"Output / connection","value":"Documented ventilation response"},{"label":"Lookup label","value":"SVI is a library lookup label, not a standard device designation."}],"references":[{"sourceId":"pi26-room-services","relevance":"Public technical context for switchroom fire and emergency interfaces. Lighting, emergency lighting, fire provisions and substation auxiliary services. Original cause-and-effect examples require project design. The application text and educational graphic are independently authored; the publisher does not certify this representation."}],"related":["iec-fire-alarm-control-panel-plan-symbol","ga-battery-fire-system-interface-panel","fire-damper-closed-proof-interface"],"artwork":"pi26-smoke-detection-ventilation-interface","publishedOn":"2026-11-03","updatedOn":"2026-11-03","provenance":"independent-public-research","representation":{"type":"functional-block","focus":"switchrooms","family":"fire-interfaces","input":"Assigned smoke signal","output":"Documented ventilation response"},"plainEnglish":{"title":"What this block does","introduction":"Relates the designated smoke-detection signal to its assigned ventilation cause-and-effect action.","example":"In a switchroom, the fire panel may report detection, system faults and a separately documented shutdown request to the station controller. These signals have different meanings and must not be combined into one unexplained alarm. For this reference, the drawing identifies “Assigned smoke signal” at the input and “Documented ventilation response” at the output. The required response is site-specific.","drawings":"Start at the named input: Assigned smoke signal. Identify its source device or document and the state represented on the drawing. Follow the named output: Documented ventilation response. Cross-reference its destination and separate the command from confirmation that the equipment responded.","terms":[{"name":"Input","meaning":"Assigned smoke signal"},{"name":"Output","meaning":"Documented ventilation response"},{"name":"Application reference","meaning":"An explanation of a named drawing function or circuit relationship; the project documents define the equipment and its connections."}],"diagram":"flow","steps":["Assigned smoke signal","SVI","Documented ventilation response"],"caption":"A reading guide. The entry's original illustration and input/output facts describe this application.","sources":[{"label":"Indoor substation: lighting, fire and auxiliary services","url":"https://www.electrical-installation.org/enwiki/Indoor_substation"}],"profileId":"power-installation-fire-interfaces"},"url":"https://eloragrid.ai/symbols/smoke-detection-ventilation-interface","illustration":{"url":"https://eloragrid.ai/tools/electrical-library/illustrations/smoke-detection-ventilation-interface.svg","scope":"Original educational concept; not an official standard graphic or product footprint","license":"https://creativecommons.org/licenses/by/4.0/"},"sources":[{"id":"pi26-room-services","publisher":"Schneider Electric","title":"Indoor substation: lighting, fire and auxiliary services","url":"https://www.electrical-installation.org/enwiki/Indoor_substation","scope":"Lighting, emergency lighting, fire provisions and substation auxiliary services. Original cause-and-effect examples require project design.","type":"manufacturer","checkedOn":"2026-11-03","reuse":"link-only","relevance":"Public technical context for switchroom fire and emergency interfaces. Lighting, emergency lighting, fire provisions and substation auxiliary services. Original cause-and-effect examples require project design. The application text and educational graphic are independently authored; the publisher does not certify this representation."}]}