Installation - NuAire AIRMOVER DSA Series Installation And Maintenance Manual

Installation and Maintenance AIRMOVER DSA AXIAL UNITS
Installation (continued)
Prior to installation, thoroughly clean the fan unit, paying
particular attention to its interior. Be particularly
thorough if the unit has been lying idle for several weeks
on an active building site or in a dust-laden environment.
A build up of cement dust, for example, could prove to
be very damaging, especially if throughput air were to be
damp.
During installation insert a gasket strip between joint
faces.
In a rigid mounting
If the unit is to be connected into, or at the end of
ductwork, lift into position and bolt flanges together.
If necessary, the unit can be lifted with suitable ties
attached to the four lifting eyes provided both sizes.
If a guards has been supplied, fit it to the open end.
On resilient mountings
Resilient mountings are optional extras and are supplied
complete with mounting feet and the necessary fixings,
in kits numbered as specified in the table on page 4
Stiff structures must be available to mount the fan. These
structures must be so designed that the Airmover will be
seated on the resilient mountings, not over hanging from
them. For dimensions see pages 6 and 7.
Prior to installation prepare as follows:
(a) If supplied, attach silencers directly to the airmovers
using bolts at the corners.
(b) For units being prepared for horizontal mounting,
attach the resilient mountings and mounting feet at
the corner holes of the flanges as shown on this page
and page 4.
(c) For units being prepared for vertical mounting,
attach the resilient mountings and mounting feet to
the particular unit or unit/silencer combination
flanges as shown on page4.
(d) Resilient mounting kits 4 to 7 can be adjusted for
height by turning the set screw.
Lift the unit or unit/silencer combination into position
and fix to the mounting structures. Resilient mountings
must stand vertical and not be unduly deflected in any
other plane.
2
Fig. 2a Spring type resilient mounting used on
larger units
Fig. 2b Rubber type resilient mounting
Speed Controls
Controls can be mounted on any firm surfaces in any
attitude, through fixing holes in the bases. Drill and plug
the mounting surface as necessary, positioning controls
so that cover retaining screws will remain accessible.
This is particular important if a battery of controls is
being fitted. Fix with No. 8 woodscrews (not supplied)
or equivalent.
For wiring purposes, bases are provided with knock-outs
for cable entry, up to 20mm conduit on all models. For
dimensions and selection of speed controls see page11.
Installation (continued)