NuAire ecosmart CONNECT XBOXER XBC, Installation, Control Details, Operating And Maintenance

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029 2085 8200 6
Safety first! – before commencing any work ensure:
• That all appropriate risk assesments have been carried
out, and the required safety measures have been taken
• That you understand the work required
• That you are trained and competent to carry it out
XBOXER XBC ECOSMART (CO) MODELS
2.0 DELIVERY OF EQUIPMENT
1.1 Receipt of equipment
All equipment is inspected prior to despatch and leaves the factory in
good condition. Upon receipt of the equipment an inspection should be
made and any damage indicated on the delivery note.
Particulars of damage and/or incomplete delivery should be endorsed by
the driver delivering the goods before offloading by the purchaser.
No responsibility will be accepted for damage sustained during the
offloading from the vehicle or on the site thereafter.
All claims for damage and/or incomplete delivery must be reported to
Nuaire within two days of receipt of the equipment.
2.2 OFF LOADING AND HANDLING FROM THE
DELIVERY VEHICLE
The weight of the unit modules and palletised items is displayed on the
unit rating plate or on the packaging. Some of the modules have an
uneven weight distribution, and this will be indicated by labelling where
appropriate. Ensure that lifting and handling equipment is adequately
rated.
Offloading and positioning of the equipment is the responsibility of the
purchaser.
Spreaders should be used when lifting with slings to avoid damage to
the casings. Care must be taken to ensure that slings are correctly
positioned to avoid crushing and twisting of the unit castings.
Where channels and/or support frames are bolted to the underside of
the unit casing, slings or fork-lift arms should be positioned to locate in
the apertures in the channels. If Lifting Eyes have been supplied / fitted
it is recommended that they are used.
Figure 5: Lifting.
XBOXER XBC unit sections will be delivered to site in the number of
sections shown below.
Unit No. of sections
XBOXER XBC Central Ventilation Unit 1
The unit will be labelled with the direction of air flow.
The direction convention must be observed during assembly.
The unit may only be operated in its intended horizontal
installation plane.
The unit must be fully levelled during installation (this is essential to
ensure that condensate drains correctly).
See page 7. for dimensions and weights.
2.3 STORAGE
The equipment must be stored in a dry, internal location. Ductwork
connection apertures shall be sealed against the ingress of dust, water
and vermin.
If the storage period is to exceed two months, contact Nuaire for
guidance on the appropriate “mothballing” procedures.
Do not stack units, modules or components.
3.0 ERECTION AND ASSEMBLY
Units must be installed in accordance with good industry practice.
These units may only be mounted horizontally and must be fully
levelled in the horizontal plane.
The units are heavy, and should be mounted using the fixing brackets
supplied or other suitable methods of support.
The supporting structure must be assessed for structural suitability.
Heat recovery components and modules that incorporate cooling coils
may produce condensation during use.
An insulated drip tray and condensate pump is provided.
The drain connection must be connected to a suitable drainage point.
(See fig 13, page 13 for details).
CONDENSATE PUMP ALARM
The condensate pump incorporates an alarm function. If the water level
in the condensate tray exceeds a maximum level (for example, as a
result of the discharge tube becoming blocked or frozen), the alarm
contact will open. This contact is internally connected to the heat
exchanger bypass actuator, and the unit will automatically be placed
into bypass mode, preventing further condensate production. Unit
operation will otherwise be unaffected.
CONDENSATE PUMP SPECIFICATION
Maximum flow rate = 12 l/h
Maximum head = 20m Vertical, 100m Horizontal
Pipe Connection size (Low Pressure Condensate
connection) XBOXER XBC = 8 mm
LPHW Coils, if fitted, are tested during manufacture to 16 Bar (using
dry compressed air). Coil and valve assemblies are similarly tested to
10 Bar. Operation of standard equipment is rated at PN6, if the
intended system requires higher operating pressures; please contact
the Nuaire Technical department for advice.
Electrical connections to the unit shall be made in accordance with the
appropriate product (see below); and installation wiring diagrams, and
shall use appropriately sized and rated cables.
Only the prepared apertures in the unit casing may be used for cable
entry. Do not drill or cut the unit casing for this purpose. Cable access
points are provided at the ends of the control enclosure.
If the control is rotated to aid connection of cables, please ensure that
sufficient flexibility is provided in the final connection run.
NB to avoid conflict with the unit access panels, it is recommended
that electrical and plumbing service connections to the unit are run at
90 degrees to the main air flow axis.
Control circuit connections must be segregated (i.e. routed
separately) from power connections.
The unit rating label shows the maximum electrical load of the
equipment. Connections to the unit may include single phase supply
connections, and a variety of control circuits.
Only the prepared apertures in the unit casing may be used for cable
entry. Do not drill or cut the unit casing for this purpose.
The equipment must be earthed and earth-bonded.
Means of local isolation for maintenance purposes are generally
required (by others). Ensure that all mains connections are isolated.
Palletised.
Slings via spreaders fitted to unit with base frame.