Swegon LOCKZONE Ceiling a Installation, Commissioning Maintenance

LOCKZONE Ceiling a
Installation – Commissioning – Maintenance
Accessories
Commissioning box: ALS The ALS box is made of galvanized
sheet steel and contains a removable adjustment damper, fixed
measurement tappings and sound absorbing material*
reinforced surface layer.
The ALS commissioning box is available with one or two differ-
ences in dimension between the inlet and the outlet and also a
version for low installation where a low overall height is required.
The ALS commissioning box is then supplied without outlet
branch.
* Fire resistance rated to B-s1,d0 in accordance with EN ISO 11925-2.
)
Frame: SAR K. For aesthetic installation of a lowered diffuser.
Adapter: ADAPTER, for adaptation to various variants and
makes of systemized 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.
Installation
To dismantle the diffuser face, insert a thin object, for example
a Quick Access card or the equivalent, in between the diffuser
face and the diffuser backing box in order to release the springs.
Move the card from the centre out towards the corner, see
Figure 2.
The inlet spigot of the diffuser backing box can be secured to the
connecting duct by means of self-tapping screws or a blind rivets.
For flush-mounting in fixed ceiling constructions, secure the termi-
nal by means of screws into place in the framework through either
the sides or top of the diffuser backing box. The air diffuser and
commissioning 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 with self-tapping
screws or pop rivets in the under side of the commissioning box.
For mounting in modular suspended ceilings, it is advisable to
select air diffusers with outer dimensions of 595 x 595 mm. Posi-
tion 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 commissioning box and the air diffuser
can be increased by as much as 500 mm with an ordinary circular
duct without having to lengthen the measuring tubes and damper
commissioning cords. See Figures 3 and 4.
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/register. Adjust the damper to the
correct position and tie a commissioning knot on the damper
cords to indicate the damper setting. See Figure 1.
with
)
k
Tomelilla
Sweden
q
p
Figure 1. Commissioning.
Measurement accuracy and requirement on straight duct before
the commisioning box, see Figure 3. The requirements of straigh
duct depends on the type of disturbance before the commis-
sioning box. Figure 3 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 or by vacuum cleaning
using a brush nozzle. The duct system can be reached for clean-
ing after opening the diffuser face. If a type ALS commissioning
box is used, swing the diffuser face to the side on its hinges so
that you then can grip the handle of the tubular damper casing
and rotate it out of its holder. See Figure 6.
k-factor
LOCKZONE Ceiling
q
200-600
+ALS 160 -200/125 -200
k = XX / XX
p
= ⋅
k p
q
( )
2
q = flow reading l/s
=
k
p
= current pressure reading (Pa)
k
= commissioning factor
20160321
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