Air Conditioning & Heat Pump Enclosures

SPECIFICATION OF COMPONENTS FOR ACOUSTIC ENCLOSURES FOR AIR CONDITIONING EQUIPMENT & HEAT PUMPS 

**NEW** product offering from Sponmech Safety Systems Ltd.

Sponmech are now producing heat pump acoustic enclosures and enclosures for air conditioning equipment. The spec for a typical version of these enclosures is below.

NOTE ON PRICES - Please note that all of our acoustic enclosures for air conditioning and heat pump units are bespoke, one-off designed and manufactured items. Prices start from £3,000.00 each approx. (minimum order £3,000.00)

Also available in aluminium – at additional cost.

Kindly note that we do not quote from data sheets. Please read on for further information regards obtaining our quotation. 

Acoustic enclosures for air conditioning units and heat pumps consist of three basic components which are:

1. Air inlet acoustic louvres

2. Air discharge attenuators

3. Acoustic Panels

The material specification of these components is as follows: -

Air inlet acoustic louvres

Each louvre module consists of two fabricated galvanised steel channel frames fabricated from 1.0mm galvanised steel sheet into which are fitted an array of horizontal parallel blades. The upper surface of each blade is fabricated from 1.0mm galvanised steel sheet and the lower surface is fabricated from 0.8mm galvanised perforated or expanded steel sheet. The blades are then filled with mineral fibre acoustic infill of 48kg/m³ density. Each blade has a rain lip of the rear edge to limit ingress of precipitation. There is also a 12mm galvanised wire mesh attached to the rear face to prevent intrusion into the enclosure by birds, rodents or debris. The standard depth of the louvres is 270mm but where increased noise reduction is required a unit 540mm deep can be used which has back-to-back blades fitted into wider channel frames.

The preferred location for the air inlet acoustic louvres is across of the back of unit/units as this provides the optimum airflow to the units but in situations where this is not possible such as where units are located against or close to a wall, louvres can be located on both sides of the enclosure.

Air discharge attenuators

The attenuators consist of a rectangular box with one or two (depending on unit model) attenuated cylindrical air paths to match the unit fan diameter. Each air path includes a cylindrical centre pod to provide increased noise reduction and a 12mm galvanised wire mesh over the top or front apertures as appropriate. The external box is fabricated from 1.0mm galvanised steel sheet and the cylindrical air paths and centre pods are fabricated from 0.8mm perforated or expanded galvanised steel sheet. The box and pods are filled with mineral fibre acoustic infill of 48kg/m³ density. The attenuator body dimensions are to suit the unit models and the standard length is 600mm. Longer attenuators can be used where greater noise reduction is required.

The discharge attenuators are attached or close to the units so that all air is discharged externally to eliminate the possibility of discharged air recirculating to the air inlet side of the units.

Acoustic panels

The remainder of the acoustic enclosure consists of acoustic panels. These are 50mm thick as standard but 100mm thick panels can be used where greater noise reduction is required. The edge frame, outer face and any internal strengthening of the panels is fabricated from 1.2mm galvanised steel sheet and the inner face is fabricated from 0.8mm galvanised perforated or expanded steel sheet. The whole panel is filled with mineral fibre acoustic infill of 48kg/m³ density.

Some acoustic panels are required to be removable for maintenance access and these are

equipped with handles for ease of removal and replacement and would be attached to the body of the enclosure using the minimum number of quick removal fixings as appropriate.

External Finish

The major components described above are fitted together by our installation team using prefabricated galvanised steel channels, angles and trims specific to each enclosure.

Unless otherwise requested, all components will have a galvanised external finish but a polyester powder coat finish to any stock RAL colour can be supplied upon request.

It is inevitable that there will be some small gaps in the finished assembly and these are usually due to unevenness in the base or wall to which the enclosure is fixed and where necessary, these gaps will be filled with a non-hardening mastic sealant.

To get a quote

Sponmech can only quote with enough/suitable information provided by you. For example you could make reference to an enclosure type on our website or provide us with your or your customer's Sketch or drawings of the enclosure and/or photos of the equipment on site.

• We do not allocate our designers or engineers onto a job until the point of order.
• We do not quote from specification data sheets. 

Please do use the enquiry form below on this page to give us enough information as possible to quote. Alternatively please email us and we can send you a questionnaire with all the information we need to know to quote you.