Halton Vita VHT Guide

Enabling Wellbeing All rights reserved © Halton
Halton Vita VHT HEPA diffuser
Installation, Commissioning and Maintenance guide

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Contents
1 Introduction ......................................................................................................................................... 4
1.1 About this document ....................................................................................................................4
1.2 Copyright and disclaimers.............................................................................................................4
1.3 Safety notes ..................................................................................................................................4
1.4 Contact information...................................................................................................................... 6
2 Product description.............................................................................................................................. 7
2.1 Overview ....................................................................................................................................... 7
2.2 Operating principle .......................................................................................................................8
2.3 Main parts and materials.............................................................................................................. 9
2.4 Further technical details ...............................................................................................................9
3 Installation ......................................................................................................................................... 10
3.1 Before you start ..........................................................................................................................10
3.1.1 Installation process ..............................................................................................................10
3.1.2 Installation requirements.....................................................................................................11
3.2 Step by step instructions............................................................................................................. 11
3.2.1 Preparing the diffuser for installation..................................................................................11
3.2.2 Mounting the diffuser on the ceiling ...................................................................................12
3.2.3 Installing the ceiling system.................................................................................................14
3.2.4 Installing the HEPA filter ......................................................................................................14
4 Commissioning...................................................................................................................................17
4.1 Before you start ..........................................................................................................................17
4.1.1 Commissioning process........................................................................................................ 17
4.1.2 Checks before commissioning .............................................................................................17
4.2 Step by step instructions............................................................................................................. 18
4.2.1 Adjusting the nozzles for 600 x 300 front panel ..................................................................18
4.2.2 Adjusting the nozzles for 600 x 600 front panel ..................................................................19
4.2.3 Adjusting the nozzles for 1200 x 600 front panel ................................................................20
4.3 Checks after commissioning .......................................................................................................21
5 Maintenance ......................................................................................................................................22
5.1 Maintenance schedule................................................................................................................22
5.2 Removing the diffuser's front panel ...........................................................................................22

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5.3 Changing the HEPA filter.............................................................................................................23
5.4 Cleaning the diffuser...................................................................................................................24
6 Technical reference data....................................................................................................................25
6.1 Dimensions.................................................................................................................................. 25
6.2 Filters...........................................................................................................................................33

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1 Introduction
1.1 About this document
This guide provides guidelines for installing, commissioning and maintenance of the Halton HEPA
diffuser.
1.2 Copyright and disclaimers
The contents of this document are strictly confidential and for information purposes only. Disclosing
the information in this document without an appropriate contract or permission by Halton to any
third party is prohibited. This document remains the sole property of Halton and may not be
duplicated, borrowed, copied, amended, modified, reproduced, transmitted or distributed to any
third party without the prior written consent of Halton. Any information held in this document or
associated materials may only be used for the purpose specified in this document.
Halton disclaims any and all liability related to this document. Halton gives no explicit or implied
warranties in terms of this document. Any permitted use of the information included herein is at
your own risk. Halton may amend or replace the information included in this document at its sole
discretion without further notice and liability.
All intellectual property rights or applications thereof, including without limitation copyright, model
rights, patents, trade secrets, trade names, trademarks, know-how (whether registered or
unregistered) attributable to this document remain the sole and exclusive property of Halton. No
rights or licenses are granted.
1.3 Safety notes
All information in this section is important and relevant for your safety. Please pay special attention
to these icons and the accompanying messages when used later in context in this manual.
Warnings
Warning signs indicate a risk of personal injury including death. There is also a potential risk of
material damage. Pay attention to the following signs when performing any tasks or moving in the
area:
WARNING!
This symbol indicates a potential hazard, obstacle or condition requiring special attention.

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DANGER OF ROTATING UNIT PARTS!
This symbol indicates a hazardous location with a risk of personal injury including death and material
damage.
DANGER OF OVERHEAD LOADS!
This symbol indicates a hazardous location with a risk of personal injury including death and material
damage.
DANGER OF PERSONAL INJURY!
This symbol indicates a hazardous location (excluding the above-mentioned danger areas) with a risk
of personal injury including death and material damage.
Cautions
Caution signs indicate a risk of personal injury or material damage. To ensure your own safety,
consider the following cautions:
CAUTION!
This symbol indicates a hazardous location with a risk of material damage that can also lead to
personal injury.
CAUTION! HEAVY OBJECT
Do not lift objects over 20kg (44lbs) alone. Use a lift or seek assistance.

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CAUTION!
Risk of personal injury or material damage.
Notes
NOTE: Notes are statements to which you should pay special attention.
1.4 Contact information
You can find the contact details from www.halton.com/contact.

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2 Product description
2.1 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.

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2.2 Operating principle
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.

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2.3 Main parts and materials
No.
Part
Material
Colour alternatives
1
Duct seal gasket
Rubber
2
Test probes
PVC hose
3
Filter
Fibreglass paper, aluminium frame and PUR
gasket
4
Nozzles
Polyacetal (POM)
White, grey, black
5
Casing
Galvannealed steel with antibacterial epoxy
polyester powder paint, white (RAL 9010)
finishing
Special colours
available on request
6
Filter brackets
Acid proof steel
7
Front panel
Galvannealed steel with antibacterial epoxy
polyester powder paint, white (RAL 9010)
finishing
Special colours
available on request
8
Filter springs
Stainless steel
9
Pressure
measurement ports
Polyurethane
2.4 Further technical details
For Halton Vita VHT dimensions see the Dimensions chapter in the technical reference data section.
For filter technical data see the Filters chapter in the technical reference data section.

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3 Installation
3.1 Before you start
3.1.1 Installation process
The installation is carried out by Halton Field Service or an approved partner.
Follow the installation process chart to install the Halton HEPA diffuser.
Typically there is a several weeks break between diffuser installation and HEPA filter installation due
to the construction stages.
NOTE: The filters and front panels can be delivered on site in a separate shipment to avoid possible
damages to the filters during storage.
Installation process chart
The possible installation methods are:
•stand-alone

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•in-line
3.1.2 Installation requirements
While installing the diffuser, keep the following items in mind:
•Installation should be carried out only by qualified HVAC technicians.
•Fix the unit only to load-bearing ceilings.
•Do not unpack the filter until you are ready to install it.
•It is recommended that you work in pairs and use a lift.
CAUTION!
Do not drill any holes into the casing. If the casing has been damaged, unfiltered air may leak.
3.2 Step by step instructions
3.2.1 Preparing the diffuser for installation
Preparing the diffuser is essential for safe and correct installation.
Procedure
1. Unpack the diffuser and check its condition.
2. Check that all the parts are present;
oDiffuser casing
oFront panel
NOTE: The diffuser can be delivered with or without the front panel.

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NOTE: The front panel can be attached to the unit. In this case, detach the front
panel before installing the filter. It is also recommended to detach the front panel
before diffuser installation for easier access to the inside of the unit and nozzles
protection.
oFilter brackets
oFilter springs
oHEPA filter
NOTE: See Main parts and materials for the product structure.
3. Determine the correct location and mark the correct location.
4. Before lifting the units protect the paint by using foam or cardboard.
3.2.2 Mounting the diffuser on the ceiling
The two installation methods are possible: stand-alone and in-line. Different suspension elements
are required.
Procedure
1. Fix suspension elements;
oRods for stand-alone diffuser installation
NOTE: Brackets can be bent 90° to support this method.

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oU-beams for in-line diffuser installation
NOTE: Fixing material is not included in the delivery.
WARNING!
Only use fixing materials designed for the required load.
2. Attach the units to the suspension elements.
WARNING!
Stand clear of suspended loads, unless properly secured.
3. Ensure that the casing is levelled and at required height.
4. Connect the ductwork.
5. Seal the duct connection.
NOTE: If filters are to be installed later, attach front panels (if delivered with the diffuser) and
protect the unit from dust by using, for example, a plastic sheet.

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3.2.3 Installing the ceiling system
This installation step is optional. The supply and installation of a ceiling system is the responsibility of
the customer.
The T-bar runners are installed below the device. The unit is designed to fit in the standard size of
the false ceiling grid.
NOTE: For the design of the diffuser compatible with the false ceiling system, contact Halton Sales.
3.2.4 Installing the HEPA filter
Correct HEPA filter installation is essential for contamination control in the room.
Before you start
Make sure that:
•All the site works that produces dust and dirt are completed.
•All non- essential items are removed from the room.
•The room is clean.
•The ventilation system is tested.
•The air channels are cleaned or properly flushed.
•Check that challenge ports can be located for the filter leakage test.
•The filter is not damaged.
•Clean all the interior surfaces of the casing with a disinfectant.
CAUTION!
Use extreme caution while fitting the filters. The slightest damage to the filter medium can result in
a leaking filter.
1. Remove possible dust protection and front panels, if present (optional).

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2. Insert the filter with the gasket upwards into the filter casing until it clicks into place at the
springs.
Filter springs will support filter in place.
3. Insert filter brackets.
Filter brackets will centralize the filter.
NOTE: Height of filter brackets depends on the filter depth. Number of filter brackets
depends on the diffuser size.
4. Tighten the filter brackets in a crosswise sequence until brackets bottom out on the unit.
WARNING!
Do not exceed 4 Nm torque.

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5. Perform an installed filter system leakage test, for example, according to the ISO 14644-3
Cleanrooms and associated controlled environments standard.
6. Mount the diffuser front panel. Push the front panel until the springs will lock.
Inside the casing, there are two pins which align with the holes in the front panel. Insert this
side first.

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4 Commissioning
4.1 Before you start
4.1.1 Commissioning process
The commissioning is carried out by Halton Field Service or an approved partner.
The main steps in the commissioning process are:
•Verifying that the installation has been performed according to design drawings.
•Adjusting the nozzle settings to create the desired airflow pattern.
4.1.2 Checks before commissioning
Before you start adjusting the nozzle settings:
•Verify that the diffuser installation has been performed according to design drawings.
•Wear sterile clothes (optional).
•Wear protective gloves.
•Check what is the desired airflow pattern. Halton standard nozzle settings are for directing
the airflow in up to four directions or as swirl jet.
NOTE: Creating a project-specific airflow pattern is possible. Contact Halton to get the nozzle
settings drawings.
•It is recommended to use a tool designed by Halton for turning the nozzles. It can be
provided by Halton on request.

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4.2 Step by step instructions
4.2.1 Adjusting the nozzles for 600 x 300 front panel
Procedure
1. Detach the front panel from the diffuser if you’re adjusting the nozzles without the Halton
tool (optional).
NOTE: See Removing the diffuser's front panel.
2. Turn the nozzles from the backside of the panel in one of the recommended airflow
patterns.
One directional airflow pattern
Two directional airflow pattern
Three directional airflow pattern

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Four directional airflow pattern
4.2.2 Adjusting the nozzles for 600 x 600 front panel
Procedure
1. Detach the front panel from the diffuser if you’re adjusting the nozzles without the Halton
tool (optional).
NOTE: See Removing the diffuser's front panel.
2. Turn the nozzles from the backside of the panel in one of the recommended airflow
patterns.
One directional airflow pattern
Two directional airflow pattern

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Three directional airflow pattern
Four directional airflow pattern
Swirl airflow pattern
4.2.3 Adjusting the nozzles for 1200 x 600 front panel
Procedure
1. Detach the front panel from the diffuser if you’re adjusting the nozzles without the Halton
tool (optional).
NOTE: See Removing the diffuser's front panel.