Construction

Coolroom panel slip joint section

To isolate unwanted machine vibration it was once sufficient to mount the offending equipment on a piece of cork or felt. However today, with greater knowledge and higher expected standards this traditional solution is now inadequate.

Coolroom corner joint

Avoidance of thermal bridging is important for two reasons: firstly, as legislation and energy awareness leads to increased scrutiny of operation systems, manufacturers are becoming more mindful of reducing further energy usage; secondly, expensive damage can occur when water vapour condenses to liquid form on the exterior of an AHU. The insulation in an air handling system should form an uninterrupted boundary that defines the moving airstream. GJ Walker AHUs are tested and manufactured to BS 1886:1998 for thermal bridges ensuring such continuity exists.

Spring mount

To isolate unwanted machine vibration it was once sufficient to mount the offending equipment on a piece of cork or felt. However today, with greater knowledge and higher expected standards, this traditional solution is now inadequate. Improved building designs are allowing lighter more flexible structures to be used. At the same time more powerful air handling systems may often be installed in upper plant rooms. The most effective way to isolate vibration and subsequent noise is to incorporate spring mounts and flexible connections internally. Factory built units with such features are cost effective, reducing not only site labour but also further anti-vibration and acoustic treatment.

Coolroom base joint

Australian Standards state positive removal of condensate must occur at all times. By grading the insulation beneath the air handling unit stainless steel tray and cross breaking the tray ensures such removal.