Halton Vita VHT – HEPA diffuser

Overview

Halton Vita VHT is a diffuser that is dedicated for hospitals and cleanrooms. It is suitable to install flush with the ceiling or the wall. Air is supplied through adjustable nozzles.

The diffuser is also available with a fully-perforated front plate for vertical air supply or exhaust. The diffuser is designed to be equipped with HEPA filter with foamed polyurethane (PUR) gasket.

Halton Vita VHT is available in three sizes with two different types of duct connection.

Applications

• Cleanrooms in hospitals and laboratories
• Suitable for supply and exhaust ventilation
• Can be installed flush with the ceiling or wall

Key features

• Radial, swirl or low turbulent flow pattern
• Air supply through adjustable nozzles or perforated front panel
• Lockable nozzles that allow easy cleaning without changing the nozzles setting
• E10, H13 and H14 class standard and high airflow HEPA filters available
• Antibacterial epoxy-polyester powder paint finishing to prevent microbial growth
• Easy filter change through the front panel
• Test probe for measuring the filter pressure loss
• Test probe for measuring particle concentration above the filter
• Pressure difference transmitter to inform the user when to change the filter (optional).

Quick selection

Fig.1. Halton Vita VHT radial jet 4 directions, supply diffuser with H14 (height 90mm) foam gasket

Fig.2. Halton Vita VHT, exhaust

Product models

The Halton Vita VHT HEPA diffuser is available in two models.

The models differ in the front panel type. The available options are:

• Front panel with nozzles (for air supply)
• Perforated front panel (for air supply and exhaust)

NOTE: The diffuser can be delivered with or without the front panel. Delivering the front panel later is recommended in case of a lengthy break between diffuser’s installation and commissioning.

Other options include:

• HEPA filter class: H14, H13, E10
• HEPA filter depth: 68, 90, 110 (H14) mm
• Three size options
• Duct connection location: top or side
• Duct connection size

Structure and Materials

Dimensions

Halton Vita VHT is available in three sizes (600 x 300, 600 x 600, 1200 x 600). The possibilities of duct connection type and size are listed in the tables.

Halton Vita VHT 600 x 300

Fig.3. Halton Vita VHT with top circular duct connection

Fig.4. Halton Vita VHT with side circular duct connection

Fig.5. Halton Vita VHT with side rectangular duct connection

 Halton Vita VHT 600 x 600

Fig.6. Halton Vita VHT with top circular duct connection

Fig.7.  Halton Vita VHT with side circular duct connection

Fig.8.  Halton Vita VHT with side rectangular duct connection

Halton Vita VHT 1200 x 600

Fig.9.  Halton Vita VHT with top circular duct connection

Fig.10. Halton Vita VHT with side circular duct connection

Fig.11. Halton Vita VHT with side rectangular duct connection

Function

Halton HEPA diffuser can be used both to supply and exhaust air.

The diffuser supplies the filtered air into the space. Adjustable nozzles allow creating the desired airflow pattern. Nozzles can be adjusted in 15 degrees intervals.

In case of exhaust application, the air is exhausted through the diffusers perforated front panel.

Installation

The installation of Halton Vita HEPA diffuser is performed by the ventilation contractor.

The diffuser is connected to the duct by screwing or by riveting. The duct connection spigot is equipped with a seal gasket. The diffuser can be installed:

• Flush with the ceiling (hung from the ceiling with M6 drop rods using fixing brackets)
• Flush with the wall

CAUTION!

Do not drill any holes into the casing. If the casing has been damaged, unfiltered air may leak.

Note: Step-by-step instructions on how to install the diffuser can be found in the Halton Vita HEPA diffuser Installation, commissioning and maintenance guide. To download the guide go to the “Downloads” section.

Adjustment

The nozzles are pre-set in the factory to four directions.

To create the desired airflow pattern adjust the nozzles manually on site. Nozzles can be adjusted in 15 degrees intervals.

Note: Step-by-step instructions on how to adjust the nozzles can be found in the Halton Vita HEPA diffuser Installation, commissioning and maintenance guide. To download the guide go to the “Downloads” section.

Servicing

The required servicing tasks include filter change and cleaning the diffuser.

To ensure that air quality meets the requirements check the HEPA filter in short time intervals and replace the filter when necessary. The servicing frequency of a filter depends on the air cleanliness of the supply air and room air. Replace the filter immediately if:

• the final differential pressure has been reached
• the filter is damaged
• micro-organisms, fungal spores, or odours are present in the filter

Clean the diffuser with disinfectants. The front panel can be detached and cleaned in the pre autoclave washing machine (<95°C). Lockable nozzles, that ensure that nozzles setting is not changed during cleaning.

Note: Step-by-step instructions on how to perform servicing can be found in the Halton Vita HEPA diffuser Installation, commissioning and maintenance guide. To download the guide go to the “Downloads” section.

Filters

Description

High efficiency particulate air (HEPA) filters are widely applied in cleanrooms where high air quality standards are essential.

Technical data of HEPA filters

Filters compatible with Halton Vita VHT diffuser are available in classes E10, H13 and H14 (European Standard EN 1822-1:2009) for standard and high airflow. The available filter depths are: with different depths: 68, 90, 110 (H14) mm. All filters have a polyurethane (PUR) foam gasket.

Operating range:

• Temperature max. 70 °C
• Humidity max. 90 %
• Final pressure drop max. 500 Pa

To get the right performance data (dpt and Lp(A)) to diagrams and CAD export files, select:

• desired duct connection location and size,
• filter class and depth

under the Accessories tab.

Specification

Diffuser with HEPA filter for cleanroom application. Creates radial, swirl or low turbulent airflow pattern. Suitable for supply and exhaust ventilation. Possible to install flush to the ceiling or the wall.

Construction

• Air supply through adjustable nozzles or perforated front panel
• Lockable nozzles that ensure that nozzles setting is not changed during cleaning
• A smooth internal surface that enables easy cleaning
• Easy filter change through the front panel
• Test probe for measuring the filter pressure loss

Material

• Galvannealed steel casing
• Antibacterial epoxy-polyester powder paint finishing to prevent microbial growth

Accessories

• A HEPA filter with aluminium frame and PUR gasket according to EN 1822  with individual test certificate
• Test probe for measuring particle concentration above the filter
• Pressure difference transmitter to inform the user when to change the filter (optional).

Order code

VHT/M-A-FP; C-D-MA-CO-IO-DF-FA-PT-ZT

M = Model of diffuser
S          Supply
E          Exhaust

A =  Size of diffuser
300       600×300
600       600×600
1200    1200×600

FP = Front panel
NO      Nozzle
PE       Perforated

Other options and accessories

C  = Location of duct connection
S           Side
T           Top

D  =  Size of duct connection
Circular
A          160
B          200
C          250
D          315
E          400

Rectangular
F          300×100
G         400×100
H         400×150
I           600×200

MA = Material
GE        Galvanaeled steel

CO = Colour
SA        Signal White (antibacterial, RAL 9003)
SW       Signal White (RAL 9003)
X          Special colour (RAL xxxx)

IO = Installation options for ceiling types
NA         Not assigned

DF = Diffuser delivered with front panel
Y            Yes
N            No

FA = Front panel attached to unit
Y            Yes
N            No

FT = Filtering type/bracket height (filter to be ordered separately)
A2          H14/90 mm
A1          H14/68 mm
A3          H14/110 mm
B1          H13/68 mm
B2          H13/90 mm
C1          E10/68 mm
C2          E10/90 mm

PT = Differential pressure transmitter
NA         Not assigned
P1          HDP-PE

ZT  = Tailored product
N            No   (standard)
Y            Yes  (ETO)

Code example

VHT/S-600-NO;C=S,D=G, MA=GE,CO=SW, IO=NA,
DF=Y,FA=Y,PT=NA, ZT=N

Sub products

FP, Front panel for Halton Vita diffuser

P = Product
VHH      VHH
VHT      VHT
VSN      VSN

M = Model
S           Supply
E           Exhaust
W          With pins
O           Without pins
NA         Not assigned

A = Size of diffuser
300         600×300
600         600×600
1200        1200×600

Other options and accessories

FP = Front panel
NO         Nozzle
PE         Perforated

MA = Material
GE        Galvanaed steel

CO = Colour
SA        Signal White (antibacterial, RAL 9003/30%)
SW       Signal White (RAL 9003/30%)
X          Special colour (RAL xxxx)

Code example

FP/VHT-S-600;FP=NO,MA=GE,CO=SW