Halton Vita VHT – HEPA diffuser

Overview

Halton Vita VHT is a dedicated diffuser for hospitals and cleanrooms. It is suitable to install flush with the ceiling. 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 a HEPA filter with a frothed polyurethane gasket (PUR) gasket or a polyurethane gel gasket (GEL) as an alternative.

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

Applications

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

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
• Normal or antimicrobial 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 before the filter
• Pressure difference transmitter to inform the user when to change the filter (optional).

Operating principle

The Halton Vita VHT can be used both to supply and exhaust air.

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

In the case of exhaust application, the air is exhausted through the diffuser’s perforated front panel.

Product models

The Halton Vita VHT is available in two models.

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

Diffuser with perforated fron panel (for air supply and exhaust)

Diffuser with nozzle front panel (for air supply)

Other options

Diffuser with optional pressure difference transmitter

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 product options include:

• Three physical sizes: 300 x 600 mm, 600 x 600 mm and 1200 x 600 mm
• Two filter options: Frothed polyurethane gasket (PUR) or polyurethane gel gasket (GEL)
• Two optional duct connection location: top or side
• Several duct connection size

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

Structure and Materials

Dimensions and weight

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

Filters

Description

The HEPA (High Efficiency Particulate Air) and efficient particulate air (EPA) filters are designed for high‑performance air purification applications that require the removal of fine particulate contaminants. The filter features a rigid aluminium housing and high‑quality glass-fibre filter media, suitable for cleanrooms, laboratories, and healthcare environments.

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: 2019) for standard and high airflow.

All filters have a frothed polyurethane gasket (PUR), with a polyurethane gel gasket (GEL) as an alternative.

Operating range:

• Maximum temperature: 70 °C
• Maximum humidity:  90 %
• Final pressure drop: 500 Pa

Note: To obtain the correct performance data (dpt and Lp(A)), along with diagrams and CAD export files, for the diffuser with a specific filter, select the desired duct connection location and size, filter class and filter depth under the “Accessories” tab in HIT.

Specification

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

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 probes for measuring the filter pressure loss and particle concentration before the filter

Material

• Steel casing and front panel
• Normal or antimicrobial epoxy-polyester powder paint finishing to prevent microbial growth

Accessories

• A HEPA filter with aluminium frame and frothed polyurethane gasket (PUR) or polyurethane gel gasket (GEL) according to EN 1822  with individual test certificate
• Pressure difference transmitter to inform the user when to change the filter (optional).

Note: Filter brackets to be ordered separately according to selected filter height.

Installation

The Halton Vita VHT 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).

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

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

Commissioning

For nozzle front panel,  the nozzles are factory pre-set to create a radial air jet in 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 for adjusting 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.

Maintenance

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

To ensure air quality meets requirements, check the HEPA filter at short time intervals and replace it 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 pre-defined 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 disinfectant. The front panel can be detached and cleaned in  a washing machine (<95°C). The Patented Lockable nozzle design ensures that the nozzles maintain the set orientation even during machine washing.

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

Order code

VHT-M-A-FP-J; C-D-MA-IO-DF-FA-FG-FT-PT-CO-ZT

Order code example

VHT-S-600-NO-R2; C=T, D=C, MA=GE, IO=NA, DF=Y, FA=Y, FG=F, FT=A3, PT=P1, CO=SW, ZT=N