Operation and Maintenance Manual (DTR) iSWAY
®
Set of products
Version 1.8 of 2.2021
10
3.
Intended use and principle of operation
3.1.
Intended use
and scope of application of iSWAY-FC
®
, iSWAY-
WFC
®
and iSWAY-RFC
®
units
The iSWAY-FC
®
, iSWAY-WFC
®
and iSWAY-RFC
®
product range is designed to generate and
maintain overpressure in protected spaces to prevent them from becoming smoky.
The iSWAY-FC
®
, iSWAY-WFC
®
and iSWAY-RFC
®
product unit should be used in construction
works for which pressure differential systems are designed with the following parameters:
•
the volume flow rate of air supplied to the protected space to generate the required
overpressure or to provide an adequate airflow velocity through open doors, separating
the protected space from the unprotected space, is between 200 and 50500 m
3
/h for the
iSWAY-FC (with AFC/ARC ventilator), from 1500 to 75000 m
3
/h for the iSWAY-FC (with AJF
ventilator) and between 200 and 49500 m
3
/h for the iSWAY-RFC and between 200 and
42000 m
3
/h for the iSWAY-WFC;
•
the required overpressure in protected spaces with closed doors between 20 and 80 Pa;
•
the total air resistance on individual storeys, from the doorway between the protected and
unprotected zone to the place where the air is discharged outside the building (on a given
storey): between 0 and 42 Pa;
•
the minimum leakage, including air flow from the zone where the overpressure is
maintained, is between 200 m
3
/h and 36000 m
3
/h
–
in case of AFC, ARC, HCBT and iSFS
ventilators.
•
the minimum leakage, including air flow from the zone where the overpressure is
maintained, is between 1500 m
3
/h and 50000 m
3
/h
–
in case of AJF ventilators.
The iSWAY-FC
®
, iSWAY-WFC
®
and iSWAY-RFC
®
can be used in pressure differential
systems, where the air is extracted from the fire floor. The air exhaust system:
-
escape (openings in external walls, ceilings, e.g. tilt windows, dampers, etc.);
-
gravitational (e.g. fire ventilation shafts);
-
mechanical (e.g. smoke ventilation system).
3.2.
Operation principles of iSWAY-FC
®
, iSWAY-WFC
®
and iSWAY-
RFC
®
units
The iSWAY-FC
®
, iSWAY-WFC
®
and iSWAY-RFC
®
unit is designed to create an overpressure
of a preset value in any smoke protection space (fig. 3.1. - 3.6.), e.g. in the stairwell space, in the
rescue lift shaft, in the fire atrium, in the crane shaft for rescue teams, in the evacuation corridor
with all doors closed. In the event that a door is opened between the pressure protected and
unprotected space, the iSWAY-FC
®
, iSWAY-WFC
®
and iSWAY-RFC
®
shall ensure, in conjunction
with the designed air discharge system, that an amount of air is supplied to the protected zone at
which the air velocity through the open door reaches the declared value (depending on the class
of the designed differential pressure system).
