Operation and Maintenance Manual (DTR) iSWAY
®
Set of products
Version 1.8 of 2.2021
26
6.3.
iSWAY-RFC
®
The iSWAY-RFC
®
unit can be installed in two positions when placed on the building's roof.
In the vertical installation, with a roof base to the roof plinth or in the horizontal installation, when
the ventilation ducts are installed horizontally.
To the iSWAY-RFC
®
set accessories are provided:
•
SRC-D damper with smoke detector
for horizontal and vertical installation
•
PDA or PDA-1 roof base for vertical installation
•
CPDB air intake for vertical installation
•
ZS or CDH-K louver for horizontal installation
•
Ventilation duct with smoke detector KCD for horizontal installation
•
Vertical installation connectors
o
TR1
o
TR3
o
TR6
Installation of accessories should be carried out by qualified technical personnel with due care.
7.
Dampers of double air intake system
(primary and back-up,
components of the two air intake system).
7.1.
Basic information
The air inlet (intake) should always be located away from any potential fire hazards. To
avoid smokiness from rising smoke, air intakes should be located at or near ground level (but at
a considerable distance from smoke extraction flaps from the underground). If this is not possible,
air intakes should be placed at roof level.
If the air inlet is far from the fan, the air from the fan inlet should be ducted.
Where air inlets are at roof level, two air inlets shall be provided, spaced apart and directed in
different directions so that they cannot be located directly on the leeward side of the same smoke
source. Each inlet should independently be able to provide the full air supply required by the
system. Each inlet shall be protected by an independently operating system of shut-off dampers
to control the spread of smoke in such a way that, if one damper closes due to smoke
contamination of the air, the other inlet continuously provides the supply of air required by the
system. The outlet point of the smoke ventilation duct shall be a minimum of 1 m above the air
inlet and a minimum distance of 5 m in horizontal.
An independent shut-off damper system for smoke control is offered by SMAY under the name
Two Damper System
. This set consists of two separate dampers with weatherproof actuators with
service and maintenance inspections. Two damper systems are offered as standard with
dimensions of iSWAY-FC inlet stubs and are intended for installation in inlet (intake) ducts.
The following figure shows an example of how to connect a system of two dampers to iSWAY-FC.
The connection to iSWAY-RFC is analogous to the following. The distance between the primary
and auxiliary air intake dampers shall be at least 12 m.