NuAire DuctMaster DSA Instruction Manual

Introduction
NuAire DuctMaster DSA & DSM square cased fans
are produced wth duty sizes up to 21m3/sec. and
incorporate either Axial flow or Mixed flow impellers
depending on the size of the unit concerned.
Casings are manufactured in galvanised steel with
propriety flanges fitted to allow connection to
ductwork. A full width access panel allows inspection
of the motor and impeller whilst still in duct.
A full range of matching ancillaries is available
including Silencers, Fan Guards, Resilient Mounting
Kits, Speed Controls and Flexible Connectors.
All NuAire Airmovers are tested to BS848 in our BSI
approved laboratories. This ensures all technical data is
accurate, which means that units can be specified with
confidence
Description
The units are produced in seven sizes, coded DSA315
to DSA1250. Units with mixed flow impellers are
coded DSM followed by impeller diameter in mm.
Silencers, flexible connectors, resilient mountings and
gaurds are supplied as optional extras. Short and long
versions of the silencer (SIL-S) & (SIL-L) are
available for each size. Speed controls are available for
most units.
Handling
Equipment must be handled carefully to avoid damage
or distortion. Except for the smallest 315 size , units are
provided with four lifting eyes. If spreaders are used,
they should be positioned as near the end flanges as
possible and in such a way that slings or webbing do
not bear on the casing. Webbing, rope of any other
material must not be passed through units for lifting
purposes.
Installation
and Maintenance
DuctMaster
Square cased Fans
DSA (axial)&
DSM (mixed flow)
NuAire Limited
Western Industrial Estate
Caerphilly, Mid - Glamorgan CF83 1XH
United Kingdom
Telephone [phone]
Facsimile No. 01222 887033
Email: [email protected] Leaflet No. 670478
April 1997
Contents
Introduction ............................................................. 1
Description ............................................................... 1
Handling ................................................................... 1
Installation ............................................................... 2
Testing after Installation ....................................... 5
Dimensions ............................................................... 6
Removing & refitting the unit ............................... 6
Operating the unit .................................................. 6
Routine Maintenance ............................................. 7
Replacement of parts .............................................. 7
Schedule of Spares .................................................. 8
Speed Controls (single phase)............................... 9
Speed Controls (three phase)................................ 10
Wiring Diagrams ..................................................... 8
Electrical Information ............................................ 8
1
Fig. 1
DSA & DSM units shown
in horizontal and vertical
applications.

Installation
General
The design and provision of complementry ductwork
supports, etc., is the resposibility of others. Adequate
space, however, must be provided around the
unit/silencer combination to enable it to be easily
removed from the ductwork when required. It is also
important that the fan unit is mounted so that it is
readily accessible. Provide adequate space around the unit
to allow for the removal and the replacement of the
impeller and motor via the access panel.
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 on all sizes
other than smallest 315,
If guards have been supplied, fit them to the open ends.
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 DuctMaster will
be seated on the resilient mountings, not over hanging
from them. For dimensions see pages 3 and 4.
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 mountigs and mounting feet to the
particular unit or unit/silencer combination flanges
as shown on pages 3 and 5.
(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.
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 page
9 & 10.
Installation and Maintenance DUCTMASTERDSA&DSMUNITS
2
Fig. 2b Rubber type resilient mounting
Fig. 2a Spring type resilient mounting

Installation (continued)
Electrical connections
Basically, the Ductmaster unit and the speed control, if
included, should be connected to the electrical supply
and to each other in accordance with the wiring diagrams
(page 9 on). Compatible site wiring and provisions of
any start contactors, overloads, etc., are the responsibility
of others. If a single phase Ductmaster is to be used with
a speed control and the unit is fitted with a permanent
capacitor motor, any link fitted between Ductmaster
terminals 1 and 2 must be removed.
All connections into the fan are to be made as shown in
the wiring diagrams (page 9 on).
Isolation to be provided by others and in accordance with
electrical regulations.
Installation and Maintenance DUCTMASTERDSA&DSMUNITS
3
A
Vertical Mounting
Fan unit
B
Vertical mounting of an airmover or
airmover/silencer combination where a silencer
is positioned above the airmover. Applies
whether flow is upwards or downwards.
Free air space
Free air space
Free air space
B
A
B
A
Flow
Flow
Free air space
Detail of resilient
mounting onto steelwork
Dimensions
Airmover
code DSB only
A B
DSB500 1-2
DSB630 3-4
36
52
724
794
56
42
724
794
58
47
724
794
57
45
724
794
54
37
724
794
55
40
724
794
SIL-S
+DSB
A B
SIL-L
+DSB
A B
SIL-S+DSB
+SIL-S
A B
SIL-L+DSB
+SIL-L
A B
SIL-L+DSB
+SIL-S
A B
Like horizontally mounted combinations, silencers
must always be fitted with free air space at the
airmover.
Dimensions in mm
(mountings normally compressed).
Vertical mounting of a fan or fan /silencer
combination where a silencer is NOT positioned
above the fan. Left-hand view shows arrangement
when flow is upwards as shown, right-hand view
arrangement when flow is downwards.

4
Mounting Centres Dimensions
B
1
A
B
Unit
2
A
B
Airmover
Silencer SIL-S or SIL-L Silencer SIL-S or SIL-L Silencer SIL-S or SIL-L
3
Unit
Free air space
A
Free air space Free air space
Unit
code Unit only
A B
DSA315 & 450
DSA500
DSA560 & 630
DSA800
DSA1000
DSM315
DSM400
DSM500
DSM630
DSM800
DSM1000
DSM1250
SIL-S
+Unit
A B
SIL-L
+Unit
A B
SIL-S+Unit
+SIL-S
A B
SIL-L+Unit
+SIL-L
A B
SIL-L+Unit
+SIL-S
A B
It is essential that silencers are always fitted with the free air space
near the unit, as performance may otherwise be impaired.
1. Unit only.
2. Unit with silencer fitted
one side only. Could be either side.
3. Unit with silencer fitted
on both sides. Could be two off SIL-S
silencers, two off SIL-L or one of each.
Horizontal Mounting
Installation and Maintenance DUCTMASTERDSA&DSMUNITS
DSM315,1,2,3
DSM315,4,5
DSM400,1,2
DS,500,3,4,5
DSM500,6,7,8
DSM630,1,2,3
DSM800,4,5
DSM1000,1
DSM1000,2,3,4
DSM1250,5,6
DAV1
DAV1
DAV1
DAV1
DAV1
DAV2
DAV5
DAV3
DAV4
DAV34
A
A
A
C
A
C
C
C
C
C
A
A
B
C
B
C
C
C
C
C
A
A
B
C
B
C
C
C
C
C
A
A
B
C
B
C
C
C
C
C
A
A
B
C
B
C
C
C
C
C
A
A
B
C
B
C
C
C
C
C
DAV1
DAV1
DAV2
DAV2
DAV2
DAV5
DAV3
DAV6
DAV6
DAV34
DAV2
DAV2
DAV2
DAV5
DAV5
DAV3
DAV6
DAV34
DAV34
DAV34
DAV1
DAV2
DAV2
DAV5
DAV5
DAV5
DAV4
DAV34
DAV34
DAV34
DAV2
DAV2
DAV2
DAV3
DAV3
DAV4
DAV6
DAV34
DAV34
DAV35
DAV2
DAV2
DAV5
DAV5
DAV5
DAV3
DAV6
DAV34
DAV34
DAV34
KitKit
KitKit
Kit
Kit TypeTypeTypeTypeTypeType
DSM only DSS*S+ DSM DSS*S + DSM
+ DSS*S DSS*L + DSM DSS*L + DSM +DSS*L DSS*L+ DSM +DSS*S
Ductmaster
Square Mixed
Flow Code
DSA315
DSA350
DSA400
DSA450
DSA500
DSA560
DSA630
DSA800
DSA1000
DAV1
DAV1
DAV1
DAV1
DAV1
DAV1
DAV2
DAV34
DAV34
DAV2
DAV2
DAV2
DAV2
DAV2
DAV5
DAV5
DAV34
DAV34
DAV5
DAV5
DAV5
DAV5
DAV5
DAV4
DAV4
DAV34
DAV34
DAV5
DAV5
DAV5
DAV5
DAV5
DAV5
DAV3
DAV34
DAV34
DAV3
DAV3
DAV3
DAV3
DAV4
DAV4
DAV4
DAV34
DAV34
KitKitKit Kit
Kit
DSA only DSS*S+ DSA DSS*S + DSA
+ DSS*S DSS*L + DSA DSS*L + DSA +DSS*L
Ductmaster
Square Axial
Code

Testing after installation
Precautions
Prior to testing, make sure that no loose items have been
left in the DuctMaster. Whenever the unit has to be
switched on with its access panel removed, first check that
all personnel are clear of the open access panel aperture.
Make sure that the external control switch or contactor as
relavent, is switched off,
Testing
Remove the access panel from the DuctMaster. Switch on
the local isolator (by others).
Run the fan just sufficiently long to ensure that it rotates.
Switch off. During run-down by observation through the
open access panel aperture, check for correct rotation and
for evidence of any malfunctioning as follows:
(a) Check that the impeller is rotating freely and is secure
on the shaft
(b) Check rotation. A single phase unit is unlikely to be
incorrect, as rotation is carefully checked at the
factory. Should a three phase unit be incorrect, reverse
any two of the supply connections in the airmover
isolation box
If a NuAire speed control is fitted, check that it regulates
speed as required (see the remarks in “Operating the
DuctMaster”).
Removing & Refitting the unit
Isolation
Before commencing, make sure that the unit is externally
isolated from the electrical supply.
Removal
Remove the terminal box cover on the side of the unit and
disconnect the electrical supply leads noting the
connections.
Support the unit and remove all fixing devices.
If silencers are fitted, the unit should be removed
complete with them. Move the unit and the silencers, if
fitted, to the working area.
Re-fitting
Re-fitting is the reverse of removal. Sandwich a gasket
between joint faces. Make sure that the unit is mech-
anically and electrically connected exactly as it was prior to
removal.
Operating the Airmover
The access panel must be firmly fixed to the side of the
unit.
Switch isolation device (by others) to the ON position
If a NuAire speed control is fitted, this can also be used to
switch the airmover OFF and ON. Note that the unit
may not always start from cold at the lowest control
setting, though there is no danger of overheating. It is
therefore recommended that the unit is started at one of
the higher settings. Speed can be changed whilst the unit
is running.
5
Installation and Maintenance DUCTMASTERDSA&DSMUNITS

D
D
‘G’ Hole Access panel
C (overall)
A
E
AB
AIRFLOW
Fan Unit
(mixed flow
unit shown)
315
350
400
450
500
560
630
800
1000
1250
315
350
400
450
500
560
630
800
1000
1250
315
350
400
450
500
560
630
800
1000
1250
Note
Two speed (TS) models
have same dimensions
etc.
Fan
Size Dimensions (mm)
A B C D E G dia.
Weight
(kg)
Codes
Note that the two speed
models have the suffix
TS e.g. DSA 500 TS
Dimensions
D
A (inside)
Silencer D
E
AB
F (overall)
AM 315 SIL-S
AM 350 SIL-S
AM315 SIL-L
AM 350 SIL-L
Silencer Code
Short Long
Dimensions (mm) Silencer Weight kg
A B C D E F F
(SIL-S) (SIL-L) G dia. (SIL-S) (SIL-L)
Silencer
Size
Installation and Maintenance DUCTMASTERDSA&DSMUNITS
Guard Flexible
Connector
D
D168
AM 315 FLEX
AM 350 FLEX
AM 400 FLEX
AM 450 FLEX
AM 500 FLEX
AM 560 FLEX
AM 630 FLEX
AM 800 FLEX
AM 1000 FLEX
AM 1250 FLEX
AM FG 315
AM FG 350
AM FG 400
AM FG 450
AM FG 500
AM FG 560
AM FG 630
AM FG 800
AM FG 1000
AM FG 1250
Unit Size Guard Flexible
Connector

Rountine Maintenance
Isolation
Before commencing, make sure that the DuctMaster and
speed control, if fitted, are externally isolated from the
electrical supply.
Maintenance periods
The first maintenace should be carried out three months
after the commissioning and thereafter at twelve monthly
intervals. These intervals may have to be shortened, how-
ever, if the unit is operating in adverse environmental
conditions or handling heavily polluted air.
General cleaning and inspection
Clean the exterior of the unit, silencers, flexible connec-
tors, resilient mountings, etc., as fitted. Inspect for
security and condition. Check tightness of fixing devices.
Remove the unit access panel. Inspect internal
components for security and condition. Check that the
impeller rotates freely. Clean components as necessary
(for cleaning the impeller see below).
Cleaning the Impeller
A build-up of dust may be removed by carefully brushing
with a stiff brush. Take care not to damage or distort
impeller blades nor to disturb balance weights. If the
impeller is too badly fouled to allow adequate cleaning in
situ, it should be removed via the access panel. (See p.7).
Alternatively, remove the complete unit/silencer combina-
tion from the installation. When removed, clean the
impeller as follows:
(a) If a silencer is fitted to the impeller side of the unit,
remove it. Alternativley remove the impeller from the
unit as described on page 7
b) Sponge the impeller with warm soapy water and leave
to soak. Do not use caustic fluids under any circum-
stances. Whan applying water, take care to prevent it
getting onto or into the electrical parts.
c) After soaking, rinse with fresh water and thoroughly
dry.
(d) If applicable, refit the silencer to the unit, with a gasket
sandwiched between the joint faces. Refit the unit or
unit/silencer combination back into the installation, again
sandwiching a gasket between joint faces.
(e) If the impeller has been removed it should be refitted
as described on page 8.
Lubrication
Most motors have sealed-for-life bearings and therefore
need no lubrication.
Testing
Refit the unit access panel. Test run the unit. Check that
the speed control, if fitted, regulates speed as required.
Repalcement of Parts
Isolation
Before commencing, make sure that the DuctMaster is
externally isolated from the electrical supply
Parts
For the ordering of spare and replcement parts see the
SCHEDULE OF PARTS on page 8. Before fitting,
remove any protective coating from repalcement parts.
Isolator or Capacitor
Replacement is self evident after the removal of the unit
access panel. When disconnecting leads make a note of
connections. Make sure the new component is wired in
the same way.
Motor or Impeller
The access panel allows inspection of the motor and
impeller in the duct. If any components are to be replaced
or serviced the unit unit must be removed from the
installation using suitable hoists for the larger sizes.
To remove the motor proceed as follows:
Disconnect the unit electrically and remove it from the
duct before commencing work.
(a) Remove the access panel and locate the terminal box
fitted to the motor, remove its cover and disconnect the
leads. Disconnect the flexible conduit at the motor end
and move leads and conduit clear. Note: To facilitate
replacement note the position of all leads tag if necessary
(b) Size 315. Remove the access panel. Release the trans-
verse motor mounting plate by unscrewing from the case
side. Move back until the impeller clears the venturi.
Release the impeller from the motor shaft (see below) and
remove
(c) All other units. Remove the access panel, release the
motor/impeller assembly from the motor support. Move
the whole assembly back (away from the venturi) to allow
access to the front of the impeller.
To assist replacement, measure and note the amount by
which the end of the motor shaft either protrudes from or
is recessed into the bore of the impeller. Remove the
impeller as detailed below.
Mixed Flow Impellers
Size 315M. Slaken two grub screws in the boss and
withdraw the impeller from the motor shaft.
Size 400M-1250M. Impellers are retained by a taper lock
fitting, for removal details see page 8
Axial Flow Impellers
Impellers on these units are retained by a spigot type
fitting. To remove, unscrew the fixing bolt and withdraw
impeller from shaft. In stubborn cases place suitable levers
between the back of the spigot and the motor case. Lever
off the impeller using the minimum force necessary.
If, however, the motor is to be changed, first remove the
impeller as already described then remove the motor and
motor plate assembly through the access aperture. Note.
On unit size 315 it will be necessary to first remove the
motor from the plate.
Installation and Maintenance DUCTMASTERDSA&DSMUNITS

Impeller / Venturi overlap
Unit Size Dim.’A’ Applies to
315
350
400
450
500
560
630
800
1000
1250
Transfer the flexible conduit adaptor to the new motor, if
this has a terminal box. Fit the new motor to the original
mounting plate and replace the motor/motor plate
assembly in the reward position in the unit. Assemble the
impeller to the shaft. On unit size 315 position the
impeller as close as possible to the the position noted
during removal. This applies whether the original or a
new impeller is being fitted. Secure the impeller by
tightening the two grubscrews in the boss. On all other
sizes fit impeller as described on page 8. Replacement is
the reversal of the removal procedure. Ensure the impeller
can rotate freely with the overlap as specified on page 8.
and that it is concentric with the venturi. If neccessary
adjust the overlap and concentricity by moving the
impeller along the shaft or by using the slots in the motor
plate.
Removing a taperlocked impeller from
a motor.
From the locking holes of the taperlock (see illustration)
remove one grub screw. Lightly oil the thread and point
and insert it into the jacking hole. Slaken the other grub
screws.
Tighten the screw until the bush is loosened in the hub
and the assembly of impeller and bush can be drawn from
the shaft. Remove the screw and separate the impeller and
bush.
Fitting a taperlock impeller to a motor
Making sure that tapered mating surfaces are thoroughly
clean, insert the taperlock bush into the impeller hub.
Line up holes. Lightly oil threads and points of grub
screws and assemble loosely into the locking holes
(see illustration above).
Clean the motor shaft and fit the impeller and bush as one
unit to the shaft in the position noted during removal.
If relevant, makes sure that a key is fitted into the slot in
the shaft. Tighten screws gradually and alternatley until
pulled up tight, noting that the bush will nip the shaft first
and then the hub will be slightly drawn onto the shaft.
Fill empty holes with grease to exclude dirt.
Schedule of Spare Parts
When ordering spare parts please quote the serial number
of the unit, together with the part number, if quoted
below. If not quoted, please fully describe the part.
The serial number will be found on the identification
plate fixed to the unit.
Remove grub screw
Tighten
grub
screw
Releasing
Taperlock Split
Remove grub screw
Tighten grub screw
Locking
Taperlock Split
Tighten grub screw
Overlap
Dimension ‘A’
(mm)
Venturi
Impeller
Installation and Maintenance DUCTMASTERDSA&DSMUNITS
AM315-1
AM315-2
AM315-3
AM315-4
AM315-5
AM315-6
AM315-7
AM315-8
AM400-1
AM400-2
AM400-3
AM400-4
AM500-1
AM500-2
AM500-3
AM500-4
AM500-5
AM500-6
AM500-7
AM630-1
AM630-2
AM630-3
AM800-1
AM800-2
770255
770257
770253
770254
770255
770255
770257
770253
770288
770288
770289
770289
770290
770290
770292
770292
770290
770290
770292
770293
770293
770293
770295
770295
530426
530427
530427
030067
030067
030015
030015
530288
530271
530289
530289
530271
530374
530369
530373
530368
530377
530363
530363
530320
530378
530380
530327
530329
Airmover
Code Impeller Motor
THIS TABLE
NEEDS
COMPLETELY
REVISING OR
DELETING

Mains on
light
Speed Controls (single phase)
SP CON 1, 4, 5, & 6
Single phase speed controls are fixed through holes
in the base which are accessible on removal of the
cover. Bases are provided with 20mm & 25mm
knockouts for cable entry.
When delivered, units fitted with a permanent
capacitor motor will have links fitted. When used
with a speed control, one link must be removed
and the motor wired as shown in the appropriate
wiring diagram.
See diagrams at the end of this section
Dimensions
Three Phase Speed Controls
Speed Control Selection
1
2
3
N
L
1
2
3
1
2
3
Motor
Motor
Speed
Selection
Switch
on off
switch
fuse
240V
1ph 50Hz
Split Phase Permanent Capacitor Motor
Shaded pole motor
.
.
.
.
.
..
.
.
Wiring Diagram SPCON 1, 4, 5 & 6
Code
Control Steps
Enclosure
AXIALS
DSA315-41
DSA350-42
DSA400-43
DSA 450-44
DSA500-45
DSA560-46
DSA450-61
DSA500-62
DSA560-63
DSA630-64
MIXED
FLOW
DSM315-11
DSM315-31
DSM315-41
DSM315-51
DSM400-2
DSM500-41
DSM500-6
DSM500-71
SPCON 15
3
Metal
X
X
SPCON 4
5
Metal
X
X
X
SPCON 5
5
Metal
X
X
X
X
SPCON 6
5
Metal
X
X
X
X
X
X
X
X
X
General Note:
The associated airmover may not always start from
cold at the lowest control setting, though there is no
danger of overheating, it is recommended that the
unit is started at one of the higher settings.
Unit Code A B C D E
SPCON 1 & 4 315 140 75 125 124
SPCON 5 & 6 315 185 105 128 170
AC
DD
6 fixing hole 5mm dia
B
E
Installation and Maintenance DUCTMASTERDSA&DSMUNITS

Speed Controls (three phase)
Dimensions and selection table
3SP CON 1, 1A, 2, 4, 4A, 7 & 14
Three phase speed controls are fixed through
holes in the base which are accessible on
removal of the cover.
Bases are provided with 20mm & 25mm
knockouts for cable entry.
Wiring Diagram 3SPCON 1, 1A, 2, 4, 4A, 4B, 7 &14
3 phase Speed Control Selection Table
General Note:
The associated airmover may
not always start from cold at the
lowest control setting, though there
is no danger of overheating.
It is therefore recommended that
the unit is started at one of the
higher settings
N
L1
L2
L3 U1
V2
W1
N
L1
L2
L3
340V/
415V
50Hz
3ph L1
L2
L3 MOTOR
Installation and Maintenance DUCTMASTERDSA&DSMUNITS
DSA 315-41
DSA350-42
DSA400-43
DSA450-44
DSA500-45
DSA560-46
DSA450-61
DSA500-62
DSA560-63
DSA630-64
DSA630-413
DSA800-423
DSA1000-433
DSA1000-443
DSA1000-453
DSA1000-4463
X
X
XX
X
X
X
XX
X
X
Code
Control Steps
Enclosure
3SPCON 1
5
Plastic
3SPCON 1A
5
Plastic
3SPCON 2
5
Plastic
3SPCON 4
5
Metal
3SPCON 4A
5
Metal
3SPCON 4B
5
Metal
3SPCON 7
5
Metal
3SPCON 14
5
Metal
Star Delta starting only
Star Delta starting only
Star Delta starting only
Star Delta starting only
Star Delta starting only
{

1
2
3
4
5
6
Star
L1(R) - 1
L2(S) - 3
L3(T) - 5
7-9-11
Delta
L1(R) 1-7
L2(S) 3-9
L3(T) 5-11
Reversal of rotation is obtained by
interchanging any 2 supply lines
Motor
Motor
1
2
3
L
N
230V
1ph 50Hz
Supply
400V
3ph 50Hz
Supply
1
2
3
L
N
230V
1ph 50Hz
Supply
Link must be removed when
using speed control
Wiring Diagrams Single Phase
Shaded pole motor fitted
to unit 315-8 only
Permanent capacitor
motor fitted to all single
phase units except 315-8
Three phase for Star-Delta starting
Wiring Diagrams for 400-2 & 400-3 units
1
2
3
N
L
Link
1
2
3
Single Speed
230V 50Hz
Single Phase
*Link between terminals 1
and 2 should be removed
when speed control is used
NOTE: Thermal protection
on this unit is prewired by
NuAire during manufacture.
Electronic Speed
controlled
230V 50Hz
Single Phase
Unit as supplied for single
speed operation
NOTE: Thermal protection
on this unit is prewired by
NuAire during manufacture
Transformer Speed
Controlled
230V 50Hz
Single Phase
Unit as supplied for single
speed operation
NOTE: Thermal protection
on this unit is prewired by
NuAire during manufacture.
230V
Supply
230V
Supply
L
L
N
1
2
3
4
5
61
2
3
NB: Remove the link
between 1&2 as shown
when using speed
control
NB: Remove the link
between 1&2 as shown
when using speed
control
230V
supply
N
1
3
5
7
9
11
Installation and Maintenance DUCTMASTERDSA&DSMUNITS
Motor
L1
L2
L3
L1
L2
L3
Motor
Wiring Diagram Three Phase
Three phase for
D.O.L starting
Electrical Details
WARNING - DANGER
This equipment incorporates rotating and moving
parts as well as electrical components and
conductors.
It is the responsibility of the installer to ensure that
any such items remaining externally accessible once
the equipment is installed are adequately guarded.
This precaution is neccessary to avoid the
possibility of accidental injury or death.
Particular attention must be paid to the inlet side of
rotating impellers.
Because start and run currents depend upon the
duty of an individual unit and associated system the
values quoted in the table are nominal.
Start currents are peak instantaneous values and are
for DOL starting unless otherwise indicated.
Overloads must be set to the maximum full load
current of the equipment they are protecting. the
recommended overload setting will be found on the
rating plate issued with each unit.

Table of unit weights, speed, run and start currents.
Technical or commercail considerations may from
time to time, make it neccessary to alter the design,
performance and dimensions of equipment and
the right is reserved to make such
changes without prior notice.
Western Industrial Estate
Caerphilly, Mid Glamorgan CF83 1XH
United Kingdom
Telephone: [phone]
Facsimile : 01222 887033
AM 315-1
AM 315-2
AM 315-3
AM 315-4
AM 315-5
AM 315-6
AM 315-7
AM 315-8
AM 400-1
AM 400-2
AM 400-3
AM 400-4
AM 500-1
AM 500-2
AM 500-3
AM 500-4
AM 500-5
AM 500-6
AM 500-7
AM 630-1
AM 630-2
AM 630-3
AM 800-1
AM 800-2
AMX 800-3
AMX 800-4
AM 1000-1
AM 1000-2
AM 1000-3
AM 1000-4
AMX 1000-5
AM 1250-1
AM 1250-2
AMX 1250-3
AMX 1250-4
AMX 1250-5
AMX 1250-6
43.00 2580
43.00 2580
43.00 2580
24.00 1440
24.00 1440
23.30 1398
23.30 1398
21.70 1300
22.80 1368
23.00 1380
23.00 1380
22.80 1360
22.50 1410
22.70 1362
23.30 1398
23.00 1380
15.50 930
15.00 900
15.50 930
23.80 1428
15.00 900
11.30 678
16.00 960
11.80 708
23.70 1420
23.70 1420
15.50 930
11.70 702
9.67 580
7.70 462
23.80 1425
12.00 720
8.00 480
24.50 1470
24.50 1470
24.30 1455
23.80 1455
0.200
0.065
0.065
0.049
0.049
0.015
0.015
0.010
0.180
0.180
0.180
0.180
0.550
0.550
0.370
0.370
0.180
0.180
0.180
1.550
0.550
0.230
1.500
0.750
1.500
0.550
4.000
2.200
1.100
0.800
4.000
7.500
1.900
22.000
22.000
15.000
7.500
1.40
0.86
0.67
0.47
0.47
0.33
0.33
0.37
-
1.30
1.30
-
-
3.40
-
2.90
-
1.70
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
14.20
1.90
1.90
0.78
0.78
0.39
0.39
0.48
-
2.70
2.70
-
-
9.25
-
7.25
-
3.00
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
0.80
-
-
0.80
1.70
-
1.30
-
0.95
-
0.95
3.50
1.80
1.00
4.40
2.80
3.70
1.70
9.70
7.50
3.10
4.00
9.00
16.50
7.70
44.00
44.00
29.00
15.30
-
-
-
-
-
-
-
-
2.40
-
-
2.40
6.80
-
4.60
-
2.40
-
2.40
18.00
6.30
2.50
16.50
10.00
20.40
7.40
26.40
34.00
10.50
8.40
18.30
48.00
23.00
114.40
114.40
82.20
35.70
12.30
11.30
11.10
10.60
10.60
10.10
10.10
10.10
20.50
16.00
16.00
20.50
28.00
28.00
25.50
25.50
24.50
24.50
24.50
42.00
35.30
35.30
70.80
58.30
66.00
59.00
142.00
125.00
131.00
127.00
118.00
300.00
288.00
348.00
348.00
290.00
253.00
11
15
24
29
42
61
81
15
22
38
43
60
91
116
Airmover
Code Nominal Fan Speed
r/s rpm
Motor
Rating
(kw)
Start and run currents (amp)
240V 10 50 Hz
FLC SC 415V 30 50Hz
FLC SC
Weights (kg)
Fan Silencer
SIL-S SIL-L
Installation and Maintenance DUCTMASTERDSA&DSMUNITS