Staircase Pressurization System

Product catalog summary

Overview: This document outlines the specifications and guidelines for pressure differential systems used in smoke and heat control, with a focus on staircase pressurization systems. It adheres to the BS EN 12101-6:2005 standard, detailing design, installation, and testing procedures.

Specifications: The systems are designed to prevent smoke passage through leaky barriers such as doors. It includes methods for calculating system parameters and test procedures for installation and commissioning.

Model Specifications: Various KIT SOBREPRESION models are listed, detailing airflow capacities, power consumption, and noise levels. Models include V1, V2, A1, A2, B1, and B2, with some featuring an air pressure sensor display.

System Characteristics: The system comprises an axial fan box, frequency converter, and air pressure sensor. Features include a galvanized metal sheet box, thermoplastic impeller, motor class F, and a working temperature range of -30°C to 70°C. It supports RS 485/Modbus RTU communication.

System Classes: Systems are categorized into classes A to F, each with specific airflow and pressure requirements. For instance, Class A systems require a minimum airflow of 0.75 m/s through doorways and a pressure difference of 50 ± 10 Pa across closed doors.

Air Supply and Release: Guidelines include using mechanical fans and ensuring independent air supply for each escape route. In taller buildings, air supply points should be distributed throughout the stairwell, and a backup pressurization unit is necessary.

Requirements for Stand-by Fans: Duplicate fans are required for systems providing air to the only escape route. Air intakes should be positioned away from fire hazards, ideally at ground or roof level.

Calculation Examples: The document provides sample calculations for airflow and pressure difference criteria, emphasizing the importance of accounting for air leakage and ductwork losses.

Specifications and Requirements:
1. Airflow and Pressure: Systems must maintain specific airflow velocities and pressure differences across doors for safety during evacuations. For example, Class A systems require a minimum airflow of 0.75 m/s and a pressure difference of 50 ± 10 Pa.
2. Fan and Backup Requirements: Buildings with a single evacuation route must have a complete backup fan system. Air intakes should be positioned away from fire risks.

System Classifications:
1. Class A: For escape, defend in place.
2. Class B: For escape and firefighting.
3. Class C: For simultaneous evacuation, e.g., offices.
4. Class D: For escape with sleeping risk, e.g., hotels.
5. Class E: For phased evacuation, e.g., hospitals.
6. Class F: For firefighting and escape.

Air Supply and Leakage:
1. Air Supply: Buildings under 11m can have a single air discharge at the top of the stairwell. Taller buildings require discharges every three floors.
2. Leakage Considerations: Airflow calculations must account for potential leakage, with a 15% increase for ductwork losses and a safety factor of 1.5 for leakage paths.

Calculations for Smoke and Heat Control:
1. Class C System Example: Requires a minimum airflow velocity of 0.75 m/s and a pressure difference of 50 ± 10 Pa. Total maximum airflow calculated as 7,473 m3/h.
2. Airflow and Pressure Difference Calculations: Based on door types and pressure differentials, with adjustments for uncertainties in leakage paths.

Air Leakage Data:

Type of Door	Leakage Area (m²)	Pressure Differential (Pa)	Air Leakage (m³/s)
Single-leaf opening into a pressurized space	0.01	10	0.024
Single-leaf opening outwards	0.02	50	0.120
Double-leaf	0.03	50	0.180
Lift landing door	0.06	50	0.350

Air Supply and Release Requirements:

Air supply must be via fans and ductwork, with independent supply for each escape route.
In buildings over 11 m, air supply points should be distributed throughout the stairwell height.
Air release points are specified for lift shafts and lobbies.

Stand-by Fans and Drive Mechanisms:

Duplicate fans are required for critical escape routes.
Air intakes should be positioned to avoid smoke contamination.

Norms and Standards:

BS EN 12101-6:2005 specifies pressure differential systems for smoke control, including design, testing, and installation procedures.

Equipment Specifications:

Details on various KIT SOBREPRESION models, including airflow capacity, power, and noise levels.

Catalog excerpts

The STAIRCASE PRESSURIZATION SYSTEM is made of a axial fan box, frequency converter and air sensor pressure. SMOKE AND HEAT CONTROL SYSTEMS: Specification for pressure differential systems NORM: BS EN 12101-6:2005 This norm specifies the pressure differential systems designed to hold back smoke at a leaky physical barrier in a building, such as a door or other similarly restricted openings. It covers methods for calculating the parameters of pressure differential smoke control systems as part of the design procedure. It gives test procedures for the systems used, as well as describing relevant, and critical, features of the installation and commissioning procedures needed to implement the calculated design in a building. • Box made from galvanised metal sheet with insulation class M1. • Thermoplastic impeller with ajustable pitch angle with the exclusive M.N.S. system. • Motor class F, up to 750 W protection IP 65 more than 750 W IP 55. • Working temperature: -30°C to 70°C. • Airflow: motor - impeller. • Housing in ABS, IP 54. • Operating temperature: -10°C ... +50°C. • Ambient humidity: 0 - 95%. • Powerful and compact sensorless vector control inverter. • Enhanced process PID control. • Stall prevention, Up/Down, 3-wire operations. • Selective v/f, sensrless vector control. • 0,7-15 kHz carrier frequency. • Powerful torque at overall speed range. • 0,01-400 Hz frequency output. • -15% +10% input voltage margin. • Selectable manual/automatic torque boost. • Built-in RS 485/Modbus RTU communication. DATA TABLE MODEL STAIRCASE PRESSURIZATION SYSTEM SISTEMAS DE VENTILACIÓN Y CLIMATIZACIÓN Josep Finestres, 9 · 08030 BARCELONA · Spain Tel. +34 93 278 82 77 · Fax +34 93 278 82 67 www.novovent.com e-mail: [email protected] *) In the models S, the air pressure sensor includes display. PG = Gravity shutters. PS = Back protection.

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Staircase Pressurization System The STAIRCASE PRESSURIZATION SYSTEM is made of a axial fan box, frequency converter and air sensor pressure. SMOKE AND HEAT CONTROL SYSTEMS: Specification for pressure differential systems NORM: BS EN 12101-6:2005 This norm specifies the pressure differential systems designed to hold back smoke at a leaky physical barrier in a building, such as a door or other similarly restricted openings. It covers methods for calculating the parameters of pressure differential smoke control systems as part of the design procedure. It gives test procedures for the systems used,...

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All the system class must follow the next requirements in all pressurization system. – In calculating the air supply needed for a pressurization system, assumptions have to be made about the leakage characteristics of the building. – Air shall be supplied via fans and where necessary ductwork to the pressurized space. – Each pressurized escape route shall have its own independent air supply. • he airflow through the doorway between T the pressurized stair and the lobby/corridor shall not be less than 0,75 m/s. • he airflow velocity through the doorway T between the pressurized space and the accommodation...

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Independientemente de la clase de sistema, deben cumplirse unos requisitos en todo sistema de presurización: – Considerar las fugas de aire para calcular el caudal de aportación. – Para suministrar aire exterior a un espacio presurizado se deben utilizar ventiladores mecánicos, con los correspondientes conductos. – Cada vía de evacuación presurizada debe contar con su propio suministro de aire independiente. • he airflow through the doorway between T the pressurized stair and the lobby/corridor shall not be less than 0,75 m/s. • he airflow velocity through the doorway T between the pressurized...

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