RAFAVENT

Stairwell Pressurisation Fans

Published product and engineering information

RAFAVENT JET & SMOKE-CONTROL SUBFAMILY

Stairwell Pressurisation Fans

Air-movement equipment for project-specific staircase and protected-route pressurisation systems.

Documentation workspace

Subfamily scope

Stairwell Pressurisation Fans

This page is reserved for verified technical and commercial documents for this RAFAVENT subfamily.

No performance, temperature or compliance claim is made until it is supported by the selected model’s controlled documents.

Technical document centre

Technical document centre

Technical datasheet

Verified construction and selection fields

Files will be published after engineering review and document approval.

Performance curves

Airflow and pressure data by confirmed model

Files will be published after engineering review and document approval.

Dimensions & CAD

Installation dimensions and available CAD files

Files will be published after engineering review and document approval.

Catalogue PDF

Controlled catalogue release for this subfamily

Files will be published after engineering review and document approval.

Compliance documents

Only certificates applicable to the supplied configuration

Files will be published after engineering review and document approval.

Installation & O&M

Installation, operation and maintenance instructions

Files will be published after engineering review and document approval.

Preliminary engineering selection data

Calculated guidance for system screening only. Final pressure targets, open-door airflow, relief area, fan duty and control sequence must be verified against the project fire strategy and applicable local standard.

Design scenarios

Scenario	Engineering basis	Release condition
Closed-door pressure control	Differential-pressure sensor + VFD control	Project fire strategy and approved cause-and-effect
Open-door make-up airflow	Door-area and required escape-route air velocity	Project fire strategy and approved cause-and-effect
Pressure relief / bypass	Relief damper / bypass sized for maximum pressure	Project fire strategy and approved cause-and-effect
Commissioning and cause-effect test	Measured pressure, airflow, door force and alarm sequence	Project fire strategy and approved cause-and-effect

Preliminary RAFAVENT system range

Model	Max airflow (m³/h)	Reference static pressure (Pa)	Motor estimate (kW)	Control
RF-SP-315	4,500	650	1.5	VFD + pressure sensor
RF-SP-400	7,500	750	3	VFD + pressure sensor
RF-SP-450	10,000	800	4	VFD + pressure sensor
RF-SP-500	14,000	900	5.5	VFD + pressure sensor
RF-SP-560	19,000	1000	7.5	VFD + pressure sensor
RF-SP-630	26,000	1100	11	VFD + pressure sensor

Illustrative leakage calculation

Input	Symbol	Illustrative value	Status
Effective leakage area	A	0.35 m²	Project input
Target pressure difference	ΔP	50 Pa	Illustrative only
Discharge coefficient	Cd	0.65	Verify
Calculated leakage flow	Q	≈2,050 m³/h	Preliminary

Control sequence

State	Fan command	Damper / relief	Verification
Standby	Project-defined	Normal position	BMS healthy
Fire alarm	Start / duty command	Open required path	Alarm feedback
Door closed	Modulate to pressure setpoint	Relieve excess pressure	Pressure + door force
Door open	Increase to airflow demand	Coordinate relief	Air velocity
Sensor fault	Approved fallback speed	Safe position	Fault alarm

System components

Component	Minimum project definition
Supply fan	Duty, redundancy, motor, VFD
Pressure sensor	Range, location, redundancy
Relief path	Damper or bypass free area
Controls	Panel, cause-and-effect, fire alarm interface
Power	Normal/emergency supply and isolation

Commissioning checks

Test	Record
Closed-door differential pressure	Pa at representative floors
Open-door airflow / velocity	m³/h and m/s
Door opening force	Measured result
Alarm and feedback	Cause-and-effect result
Power failure / recovery	Sequence result

Calculated Q–Ps curves

RF-SP-315 — Calculated Q–Ps curves

Speed	Airflow (m³/h)	Static pressure (Pa)
0	0	650
25	1125	611
50	2250	488
75	3375	286
100	4500	0

RF-SP-400 — Calculated Q–Ps curves

Speed	Airflow (m³/h)	Static pressure (Pa)
0	0	750
25	1875	705
50	3750	563
75	5625	330
100	7500	0

RF-SP-450 — Calculated Q–Ps curves

Speed	Airflow (m³/h)	Static pressure (Pa)
0	0	800
25	2500	752
50	5000	600
75	7500	352
100	10000	0

RF-SP-500 — Calculated Q–Ps curves

Speed	Airflow (m³/h)	Static pressure (Pa)
0	0	900
25	3500	846
50	7000	675
75	10500	396
100	14000	0

RF-SP-560 — Calculated Q–Ps curves

Speed	Airflow (m³/h)	Static pressure (Pa)
0	0	1000
25	4750	940
50	9500	750
75	14250	440
100	19000	0

RF-SP-630 — Calculated Q–Ps curves

Speed	Airflow (m³/h)	Static pressure (Pa)
0	0	1100
25	6500	1034
50	13000	825
75	19500	484
100	26000	0

Information required before selection

Required airflow and static pressure
Operating temperature and conveyed-air composition
Installation orientation, space and connection details
Electrical supply, control method and duty pattern
Sound, material and environmental constraints

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Send project requirements