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NuAire QUIETWINS QTI Installation And Maintenance Manual
NuAire QUIETWINS QTI Installation And Maintenance Manual

NuAire QUIETWINS QTI Installation And Maintenance Manual

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QTI QUIETWINS
Direct Drive Twinfans
single phase
Fig. 1. General view of a typical QTI unit.
Introduction
The NuAire QUIETWIN Twinfan Direct Drive range consists
of 4 basic designs with duties up to a maximum of 1.53m
The 4 models are coded as follows:
QTI
(Internal Duct Mounted) in line unit.
QTE
(External Duct Mounted) in line unit
QTR
(Roof Mounted, end inlet) side discharge unit.
QTRB (Roof Mounted bottom inlet) side discharge unit.
QTI Quietwin
Units are rectangular in section and have circular rigid spigots at
each end (QTIC). Matching acoustic flexible connectors are
included and four matching mounting feet are alsosupplied.
The casing is manufactured from coated galvanised steel. Full
size access panels are fitted to the top and bottom faces. These
panels are fully detachable for inspection purposes. The internal
surfaces of the case (including the top and bottom panels) are
lined with a fire retardant acoustic lining material. The units
incorporate two independent motors with high efficiency, for-
ward curved centrifugal impellers running in metal scrolls. The
fans discharge into a common outlet chamber through a shutter
system that prevents 'blowback through the standby fan.
The motors are manufactured to BS 5000 and are suitable for
single phase supply. Airflow and failure monitors are standard as
is Class B insulation. Suitable for operation in ambient tempera-
tures up to 40
o
C.
Controls
The fans are designed to be used with SMART (S) controls .
Installation
IMPORTANT
The installation must be carried out by qualified personnel
in accordance with the appropriate authority and con-
forming to all statutory and governing regulations eg. IEE,
COHSE etc.
QTI units are supplied for installation into In-Line ductwork
(internal) applications. The mounting feet on the QTI unit
can be employed in surface or suspended applications.
ISOLATION
Before commencing work ensure the electrical supply is
disconnected.
Installation Ancillaries
Anti vibration mountings and matching silencers are available
Installation
and Maintenance
NuAire Limited
Western Industrial Estate
Caerphilly, United Kingdom CF83 1XH
Telephone: 029 2088 5911
Facsimile: 029 2088 7033
Email: info@nuaire.co.uk
www.nuaire.co.uk
Contents
Introduction
Installation
Dimensions
Electrical information
AV mountings
Silencers
Controls wiring connections
Commissioning the fans
Maintenance
Certification
Warranty
3
/s.
Units should always be positioned with sufficient space to
allow removal of the access covers and subsequent
removal of fan and motor assemblies etc.
Unit must NOT be
installed inverted
(upside down)
Quietwin QTI units can be mounted in any attitude
except vertical with the outlet facing down, or inverted
i.e. upside down as these attitudes the shutters will not
operate satisfactorily.
Ductwork connections must be airtight to prevent loss of per-
formance. The method of mounting used is the total responsi-
bility of the installer. The QTI unit has an external case side
mounted control module / terminal box and is supplied ready
for connection into the electrical supply.
Rigid Mounting
Note, the QTI unit and silencer cases have captive M8 nuts
which can be used after removing the M8 screws plugging
them.
On Resilient Mountings
Suspension rods / fixing screws are not supplied. Drill suitable
holes in the support structure to receive the particular sizes.
Note that the large round washers included in the resilient
mounting kits are for fitting above or below the resilient
mounting as required to safeguard the installation against
break-up of, or damage to, a mounting. In the event of a
resilient mounting failure the washer will support the weight
of the unit.
Suspended from ceiling
Large washers should be fitted BELOW the resilient mounts.
Leaflet 670916
DECEMBER 2001
Page
1
1
2
2
3
3
4
5
8
9
12
Unit must NOT be
installed with the outlet
facing downward
1

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Summary of Contents for NuAire QUIETWINS QTI

  • Page 1 Commissioning the fans Maintenance Introduction Certification The NuAire QUIETWIN Twinfan Direct Drive range consists Warranty of 4 basic designs with duties up to a maximum of 1.53m The 4 models are coded as follows: (Internal Duct Mounted) in line unit.
  • Page 2 4 Mounting feet included connectors included Electrical Note Table 1 (See electrical wiring diagrams) DIMENSIONS (mm) If a NuAire control has been supplied, wire the control to the QTIC Weight Fan unit and also to the mains supply. Unit D dia. (kg) Refer to the wiring section at the rear of this leaflet.
  • Page 3 Silencer Attenuation Table 4. The QTI unit has a matching silencer available as an ancillary item from NuAire. Code: QTI*SIL. (*would be the unit Dynamic attenuation of silencer in dB size). The QTI silencers are connected using flexible con- Octave Band Mid frequency Hz...
  • Page 4 Smart Control Code: ST-JB Junction Box, code: ST-JB (Leaflet No: refer to Nuaire) MK Adaptor plate Code: MK-ADAPTOR Sensor guard, code: refer to Nuaire (Leaflet No: refer to Nuaire) MK Adaptor plate, code:: MK ADAPTOR Humidity Manual Audio / Visual Timeclock P .I.R.
  • Page 5 Installation and Maintenance QUIETWIN DIRECT DRIVE TWINFANS Control Module Connections /Inputs and Commissioning Procedure (see fig. 6). their uses (see fig 6) Switch on the supply to the QTI Quietwin fan. Locate the control module panel Care must be taken if SENSOR INPUT 1: the module has any covering panels removed as live This is the Master on/off control input and is usually ‘linked out’...
  • Page 6 Installation and Maintenance QUIETWIN DIRECT DRIVE TWINFANS Smart Twinfan DIL switch settings (see fig 6). 30% TRICKLE SPEED The Smart Twins operation can be individually tailored to suit your own particular application. 40% TRICKLE SPEED A label is attached to the inside of the control module cover detailing the various switch functions.
  • Page 7 Installation and Maintenance QUIETWIN DIRECT DRIVE TWINFANS Pressure Reading Speed Speed Pressure 100% 100% Reading Volume Flow Rate Volume Flow Rate Volume flow (l/s) Volume flow (m QTI Quietwins Size 3 QTI Quietwins Size 4 Pressure Reading Pressure Speed Speed Reading 100% 100%...
  • Page 8 We are on hand to provide help and advice from the most spare parts 'off the shelf'. basic use of any NuAire equipment to the more complex applications, maximising on the versatility of our control If you are an industrial or commercial user, you may be products.
  • Page 9 CF83 1XH. Telephone: 029 2088 5911 Fax: 029 2088 7033 DECLARATION OF INCORPORATION & INFORMATION FOR Email: info @ nuaire. co. uk www.nuaire.co.uk SAFE INSTALLATION, OPERATION & MAINTENANCE AUGUST 2001 We declare that the machinery named below is intended to be assembled with other components to constitute a system of machinery.
  • Page 10 GENERAL The equipment referred to in this Declaration of Incorporation is supplied by NuAire to be assembled into a ventilation system which may or may not include additional components. The entire system must be considered for safety purposes and it is the responsibility of the installer to ensure that all of the equipment is installed in compliance with the manufacturers recommendations and with due regard to current legislation and codes of practice.
  • Page 12 Warranty regulations. The remaining 2 years covers replacement parts only. Installation & Maintenance of the equipment must be as directed in the NuAire Installation & Maintenance leaflet. Western Industrial Estate, Caerphilly, CF83 1XH Technical or commercial considerations may, United Kingdom.