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20181004 Swegon reserves the right to alter specifications.
HAWK
Ceiling
Technical description
Design
The square, perforated supply air diffuser consists of a diffuser
backing box and a diffuser face. The diffuser face has perfora-
tions designed for managing high airflows. The diffuser face is
hung on hinges on one side and secured by springs on the oppo-
site side. This Quick Access fastening system makes it simpler and
quicker to open and close the diffuser face for installation, com-
missioning and cleaning. The air diffuser is also available in a low
version for installation in ceiling void where low installation height
is required. The air diffuser is then supplied without any branch.
Materials and surface treatment
The backing box and diffuser face are made of sheet steel. The
connection branch is made of galvanized sheet steel. The interior
and exterior surfaces of the air diffusers are painted in our stan-
dard colour: RAL 9003/NCS S 0500-N. The air diffusers are also
available in optional colours: RAL 7037 Dusty grey, RAL 9006
white aluminium, RAL 9005 jet black, RAL 9007 grey aluminium
and RAL 9010 white.
Accessories
Commissioning box:
ALS. Made of galvanized sheet steel. Contains removable com-
missioning damper, fixed measurement tappings and sound
absorbing material with reinforced surface layer, to Fire Resis-
tance Class B-s1,d0 according to EN ISO 11925-2. Tightness class
C on the housing according to SS-EN 12237 and VVS/AMA 12.
The air diffuser is also available in a low version if the height
in the ceiling void is restricted. The commissioning box is then
supplied without outlet branch.
The commissioning box is available with 1 or 2 differences in
dimension between the inlet and outlet.
Frame:
SAR K. For aesthetic installation of a lowered diffuser.
Adapter:
ADAPTER, for adaptation to various variants and makes of sys-
temized false ceilings: Ecophon, Gyproc, Dampa etc. Also used
for adaptation to optional sizes of lay-in ceilings, for instance
625 x 625 or 675 x 675. Specification in separate product sheet
for ADAPTER.
Planning
The HAWK Ceiling is available with square dimensions of 595 x
595 mm in all connection sizes. This makes the HAWK Ceiling
very easy to install in suspended modular ceilings with insertion
dimensions for 600 x 600 mm modules. Position the whole air
diffuser on the surface of the T-bar framework and then secure
it to the duct system. The HAWK Ceiling is also available in a
low version for installation in ceiling void where its installation
height must be minimized. See Figure 2.
Installation
To dismantle the face (see Figure 1) prior to installing the air dif-
fuser, insert a thin object, such as a Quick Access card or similar
card, between the air diffuser face and backing box to release
the springs. Then slide the card from the centre outward toward
the corners, see figure 1. The inlet spigot of the diffuser backing
box can be secured to the connecting ducting by means of self-
tapping screws or blind rivets.
For flush-mounting in fixed ceiling constructions, secure the
air diffuser by means of screws into place in the framework
through either the sides or top of the diffuser backing box. The
face and backing box in the version for low installation height
must be centred and jointed together using the locking strip
supplied. Secure the air diffuser in the correct position by means
of self-tappingscrews to the underside of commissioning box. See
figure 3.
Position these directly down in the T-bar framework, and then
secure them to the duct system or to the commissioning box.
If an ALS commissioning box is used, it must be secured to the
building structure by means of hangers or mounting brackets. The
distance between the air diffuser and the commissioning box can
be increased by as much as 500 mm with an ordinary circular duct
without having to lengthen the measuring tubes and damper adjust-
ment cords. See Figure 2.
Commissioning
Commissioning should be carried out with the face plate mounted.
Pull the measuring tube and damper adjusting cord out through
the face plate. Connect a manometer to the right measuring tube.
The red or blue tube is used for supply air depending on whether
a one or two-step ALS commissioning box is used. For extract air,
use the transparent tube only. The required commissioning pressure
can be calculated by means of the K-factor of the air diffuser/reg-
ister. Adjust the damper to the correct position and tie a commis-
sioning knot on the damper cords to indicate the damper setting.
Measurement accuracy and requirement on straight duct before
the commisioning box, see Figure 2. The requirements of straigh
duct depends on the type of disturbance before the commis-
sioning box. Figure 2 shows a bend, a dimensional change and
a T-piece. Other types of disturbances requires at least 2xD
straight (D = connection dimension) for measurement accuracy
of ± 10% of the flow.
The K-factor is specified on the product identification plate and also in
the relevant commissioning instructions available at www.swegon.com.
Maintenance
The air diffuser can be cleaned, if necessary, using lukewarm
water with dishwashing detergent added. The duct system can
be accessed after opening the diffuser face. If an ALS commis-
sioning box is used, pull the distributor plate aside and then twist
the damper unit from of its mounting, see figure 4.
Environment
The Declaration of construction materials is available at www.
swegon.com.
