Semi circle displacement ventilation unit which is aesthetic in design.
|Front panel||Perforated galvanised steel||Stainless steel AISI 316L
|Casing||Galvanised steel||Stainless steel AISI 316L
|Perforated galvanised steel||–|
|Pressure measurement pipe||Plastic PVC||–|
|Installation base||Galvanised steel||–|
|Duct cover||Galvanised steel||–|
White (RAL 9003/30% gloss)
|Special colours available|
|Duct cover (1)||DC||Standard lengths
500 / 1000 / 1500 / 2000 mm
|Installation base (2)||AB||Standard height 100 mm||–|
|Installation base||SB||Standard height 200 mm
Dimensions = (unit size+ 60 mm)
|High (store) model|
Air is supplied into the space through the front panel of Halton Zen Semi Circle, normally at a slightly lower temperature than the room. The supply air flows down to floor level and gradually pervades the occupied space at low velocity level before finally rising up due to the convection of warm surfaces. The low velocity flow pattern is semi-circular (180°).
The non-clogging unit can be easily opened and cleaned.
Halton PRA or Halton PTS/C can be used as an airflow adjustment damper in round duct sections. The safety distance for reliable air flow measurement from the displacement unit is 5 duct dimensions between displacement unit and air flow adjustment damper.
If air flow adjustment damper is installed closer to the displacement unit (minimum distance about 3 duct dimensions), supply air throw pattern is correct, but air flow measurement result will not be accurate. When installing air flow adjustment damper close to the displacement unit (minimum 3xD), attenuator could be needed between the damper and the displacement unit.
Note: The flow pattern data has been defined for floor installation.
Perform the installation in the following order:
A) Installation without base:
Fix mounting brackets (4 places) to the Halton Zen Semi Circle
displacement ventilation supply unit (1).
Position the unit(2) against the wall and secure with mounting brackets
(delivered with the unit).
Installation with base:
Fix the base (7) onto the floor and fix the Halton Zen Semi Circle
displacement ventilation supply unit (2) onto that.
Secure with mounting brackets on top (1) (2 places)
B) Fix duct cover top and bottom parts (3) and sides (4) onto the wall between
the unit and ceiling with screws.
C) After installation of the ductwork, install the front plate of the duct cover (5)
and diffuser front plate (6)
D) When multiple sections of duct covers are used, secure them with screws
(not included in delivery).
The supply flow rate for displacement ventilation unit is determined by measuring the differential pressure from the measurement nipple with a manometer.Use a measurement probe thin enough fit into the nipple. Then use tape or another gasket to create a seal in the nipple in order to get an accurate reading .
The flow rate is calculated by using the formula below:
Value of k factor for formula
(D = duct diameter)
1. Front panel
2. Inner panel
Open the front panel (1) by carefully pulling the spring connections out.
Open the inner panel (2) by unscrewing the screws.
If required, the flow equalization plate can be detached.
Wipe the parts with a brush or damp cloth. Do not immerse in water.
After cleaning, reassemble in reverse order.
The Halton Zen Semi Circle displacement ventilation supply unit is made of galvanized steel, polyester-epoxy-painted with a white (RAL 9003) colour.
The unit has a robust maintenance-free, non-clogging structure.
The unit is comprised of a detachable, perforated front and inner panel, an internal flow equalization plate, and casing.
The unit has a circular duct connection at the top or bottom, depending the location of the unit.
Mounting brackets are included in the delivery, screws not.
The unit can be equipped with a duct cover and/or installation base where required.
The front panel of the unit is available of 1.5mm thick galvanised steel for demanding spaces.
D = Diameter of duct connection (mm)
125, 160, 200, 250, 315, 400, 500, 630
MA = Material
AS Stainless steel (AISI 316L)
TP = Front panel thickness 1.5 mm
CO = Colour
SW Signal white (RAL 9003)
X Special colour
ZT = Tailored product
Y Yes (ETO)
DC Duct cover
AB Standard base
SB High store base
ZSC-200, MA=CS, TP=N, CO=SW, ZT=N