2
08. 10. 20. Document Number 670506
Nuaire |
Western Industrial Estate
|
Caerphilly
|
CF83 1NA
|
nuaire.co.uk
TRA / TRC / TRM
Installation Manual
2.0 INTRODUCTION
Terminator units are manufactured using a range of six basic cowl sizes
A - F. Impellers are available in axial, centrifugal or mixed flow versions.
A given cowl size may serve more than one size impeller e.g. TRA500
& TRA560 use a size C cowl (Section 2.1). Each unit consists of a base
incorporating a spun venturi plate, a bridge from which the motor and
impeller are suspended and a GRP cowl (Figure 1).
Motors are manufactured to BS5000, have sealed for life bearings and
integrated thermal protection which must be incorporated into the
control wiring. Failure to use this device will invalidate the equipment
warranty.
1
View of Unit
2.1 Code Description
1
2 3
4
-
5 6
TR
A
S
450
- 4
3
1. Range:
TR
= Terminator Extract Fan
2. Impeller Type:
A
= Axial
C
= Centrifugal
M
= Mixed Flow
3. Backdraught Shutter:
No Affix
= No Shutter
S
= Shutter
4. Unit & Cowl Size:
315
= Cowl A
350
= Cowl A
400
= Cowl B
450
= Cowl B
500
= Cowl C
560
= Cowl C
630
= Cowl D
710
= Cowl D
80 (represents 800)
= Cowl E
100 represents (1000)
= Cowl F
5. Motor Poles:
4
= 4 Pole Motor
6
= 6 Pole Motor
6. Electrical Power:
1 =
Single Phase
3 =
3 Phase
2.2 Purlin Box / Curb
Purlin box / curbs are manufactured in galvanised mild steel. The upper
face of the purlin box is fitted with a sealing strip. When installed, the
curb must be securely attached to the trimmer angles.
2.3 Soaker Sheet
Soaker sheets can be supplied by Nuaire. Manufactured in high quality
GRP, each sheet is 19500 mm long and can be supplied to match
most roof profiles. The soaker sheets are designed to be used over a
prefabricated curb.
3.0 MECHANICAL INSTALLATION
Installation must be completed by competent persons, in accordance
with good industry practice and should conform to all governing and
statutory bodies i.e. IEE, CIBSE, etc.
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 necessary to avoid the possibility of accidental
injury or death. Particular attention must be paid to the outlet side
of the rotating impellers if the cowl is removed.
3.1 Handling
Units must at all times be handled carefully to avoid damage or
distortion. The unit is delivered fully assembled and mounted on a
pallet for ease of handling. When lifting or hoisting units, care must
be taken to ensure that no pressure is applied to the cowl. Lifting eyes,
suitable for all units, are available.
The unit is delivered completely assembled and a protective skin
prevents damage to the unit. It is strongly recommended that this
protective skin is allowed to remain in position for as long as possible.
When necessary, the skin should be removed using a sharp knife, taking
care not to score the unit surface.
The unit can now be inspected for damage. Any accumulation of dirt
should be removed from the impeller (Section 5.3). The unit is designed
for roof mounting but can be wall mounted using the optional wall kit
available from Nuaire (Section 3.4.4).
3.2 Roof Installation
On inclined roofs, the longer dimension of the cowl must be
running ACROSS roof slope. Unit can be installed at an angle of up
to 80° from the horizontal with the cowl so aligned.
Check that the curb mounting surface is flat and that the sealing strip is
in position (suitable mastic may be used as an alternative).
If backdraught shutters or inlet side guards are to be fitted they should
be installed centrally in the curb. Curbs other than Nuaire purlin box/
curbs should be fitted with timber capping. On timber capped curbs
the units may be attached using coach bolts or similar. When attaching
to Nuaire purlin box/curbs the use of TEK self drilling screws (type SF
46516) or self tapping screws is recommended. Holes are provided in
the skirt of the units base/venturi plate (Figure 6).
3.3 Wall Installation
Unit MUST be installed using the appropriate wall mounting plate
(Figure 5) and with the longer cowl dimension running horizontally.
If still assembled, separate the unit and wall plate by removing the
screws and washers from around the unit skirt. Retain the fixings.
Depending on the type of wall, prepare a hole to the dimensions
provided (Section 3.4.3). For a solid wall, fit the hole with a timber
frame as shown. Drill and fit appropriate wall plugs and secure the
timber frame. On completion, the frame must be flush with the outside
surface of the wall.
For installation to a profile sheet wall, fit a suitable timber frame
supported by means of angle-iron sections. The timber frame should, on
completion, be flush with the outside sheet profile (Figure 4).
Apply a flexible silicone sealer (e.g. Flowseal 32) to the timber frame
and secure the wall plate using suitable coach bolts, nuts and washers.
On a solid wall installation, apply a fillet of sealant between the wall
plate and wall.
On profile walls it will be necessary to ‘flash’ the wall plate. Flashing
strips should extend sufficiently to allow fixing to a high portion of
the profile section. Ensure that the flashing strips over lap at the four
corners. Fill between the top and bottom flashing strips with Neoprene
profile filler and seal all external joints and seams with a suitable
flexible silicone sealer such as Flowsil 32 (Dimensions Figure 5).
3.4 Dimensions (mm)
