Fire Smoke Damper Electrical Requirements

Type c dampers and type c sleeved dampers are the only dampers that can be built as medium high or high pressure. Fire damper required smoke damper required typically ducts shall not penetrate fire walls but if allowed then damper is required no requirements stated in section yes unless penetration meets astm e119 or ul 263 or meets all of the following. Out of wall fire and fire smoke damper iom true round fire and fire smoke damper iom electrical guidelines.

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For belimo combination fire smoke damper actuators intended for installation in accordance with national protection association standard for installation of air conditioning and ventilating systems nfpa 90a damper actuators must meet the construction and performance requirements in ul555.

Fire smoke damper electrical requirements.

An important aspect of limiting the spread of fire smoke and toxic gases is protecting openings in fire and smoke rated assemblies that are provided to allow the building to be functional. A fire damper can be defined as a device installed in ducts and air transfer opening of an air distribution or smoke control system designed to close automatically upon detection of heat. Electric smoke damper actuators the modulating electric smoke damper actuators are oil immersed spring return linkage coupled actuator for modulating damper control designed to operate reliably in smoke control systems requiring underwriters laboratories inc ul 555s ratings up to 250 f. Fire smoke damper hvac fsd35 ruskin fsd35 1ul555 ul555s leakage class 3 classified.

The actuator accepts a 0 to 10 v or 4 to. Low pressure less than 3 w c. This includes fire. A combination fire and smoke damper looks very similar to a smoke damper but has a high temperature sensor to close the damper from heat along with the local smoke detector.

Standard for fire dampers and ul555s. The fsd35 is a combination fire and smoke damper designed with triple v groove blades and controlled closure technology that provides point of origin fire containment and operational flexibility in static and dynamic smoke management systems. Section 9 3 1 smoke control systems shall be installed inspected tested and maintained per nfpa 92a. All smoke dampers are actuated since there is no method to physically sense smoke and electrical control is required.

Electrical input may be needed for products discussed within this iom. Section 8 5 5 4 2 smoke dampers and combination fire smoke dampers shall be inspected tested and maintained per nfpa 105. Wall is 1 hr or less building is fire sprinklered entire duct system is 26 ga. The metal fab fire damper pressure rating as it relates to manufacturing the damper.

Section 9 2 1 hvac equipment and ductwork shall be in accordance with nfpa 90a. All wiring shall be done in accordance with the latest edition of the national electrical code ansi nfpa 70 any local. It also serves to interrupt migratory airflow resist the passage of flame and maintain the integrity of the fire rated separation. Standard for smoke dampers.

Dampers are often used to protect openings for heating ventilation and air conditioning hvac ducts through these rated assemblies. Standard fire damper no additional construction is required.