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20181005 Swegon reserves the right to alter specifications.
PELICAN
Ceiling
Technical Description
Design
The square, perforated supply air diffuser consists of a diffuser
backing box and a diffuser face. The air diffuser's perforated face
plate is equipped with an adjustable air flow director for simple
variation of the distribution pattern. The diffuser face is easy to
install and remove. This enables quick and uncomplicated installa-
tion, commissioning and cleaning.
The air diffuser is also available in a low version if the space
inside the ceiling void is restricted. The air diffuser is then supp-
lied without sleeve coupling (not size 400-600).
Materials and finish
The diffuser backing box and the diffuser face are made of
sheet steel. The commissioning box is made of galvanized sheet
steel. The interior and exterior surfaces of the air diffuser are
painted in our standard white colour: RAL 9003/NCS S 0500-
N. Air diffuser is also available painted in alternative standard
colours: dusty grey RAL 7037, white aluminium RAL 9006, jet
black RAL 9005, grey aluminium RAL 9007 and white RAL
9010.
Accessories:
Commissioning box:
ALS commissioning box made of galvanized sheet steel. The
commissioning box contains a removable commissioning
damper, fixed measurement tappings and sound absorbing
material with a reinforced surface layer. Tightness class C on the
housing according to SS-EN 12237 and VVS/AMA 12.
A combination for low design is also available, if installation in
an extra low ceiling void is required. The air diffuser as well as
the commissioning box are then supplied without any insertion
joint and branch.
The commissioning box is available with 1 or 2 changes in
dimension between the inlet and the outlet.
Frame:
SAR K, for aesthetic installation of a lowered diffuser section.
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.
Project Design
PELICAN Ceiling is available in two connection sizes with
square dimensions of 395 x 395 and 595 x 595 mm respectively.
This makes the air diffusers very easy to install in suspended
modular ceilings with size 600 x 600 mm insertion dimensions
for modules. Position the air diffuser on the surface of the T-bar
framework and then secure it to the duct system. PELICAN
Ceiling is also available in a low version for installation in a ceiling
void where the installation height of components must be mini-
mized.
The air flow director can be accessed after you remove the air
diffuser face from its spring retainers. It consists of a number of
adjustable air deflectors and by turning these you can easily set the
distribution pattern desired. See Figure 1.
Installation
To unfasten the diffuser face, press in the spring retainers on
one side of the diffuser and let the diffuser face hang on its
safety cords. The inlet spigot of the diffuser backing box can
be secured to the connecting ducting by means of self-tapping
screws or a blind rivets. For flush-mounting in fixed ceiling con-
structions, secure the air diffuser by means of self-tapping sheet
metal screws in the underside of the commissioning box.
For installation in modular suspended ceilings, position the air
diffuser directly down in the T-bar framework, and then secure
it to the building structure with hangers or
mounting brackets. The distance between the commissioning
box and the air diffuser can be increased by as
much as 500 mm using an ordinary circular duct without having
to lengthen the measuring hoses and damper adjustment 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 + red or red + blue tube is used for
supply air depending on whether a one or two-step ALS com-
missioning 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/register. Adjust the
damper to the correct position and tie a commissioning 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 you have opened the air diffuser face and
removed the perforated plate. If an ALS commissioning box is
used, pull the distributor plate aside to enable you to grip and
twist the damper unit from of its mounting. See figure 4.
