Airwell Wespak 5.05 [4/28] Specifications continued
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Airwell Wespak 5.05 [4/28] Specifications continued

Airwell Wespak 4.05 [4/28] Specifications continued
Page 4
Specifications (continued)
Components type
Fans
Each unit is equipped with double fans and belt driven motor.
Each fan is of double inlet high efficiency centrifugal type with
forward curved blades.
All fans are statically and dynamically balanced to assure smooth
and quiet operation.
Fan bearings are permanently lubricated ball bearings mounted on
rubber inserts to eliminate vibration.
Fans are driven by a TEFC, 1500 nominal RPM, class F, IP55,
400 V/3 Ph/50 Hz motor mounted on an adjustable platform to
facilitate belt adjustment.
An adjustable pulley is supplied as standard for ease and accuracy
in balancing the system.
Coils
All coils are constructed of seamless copper tubes and aluminium
fins.
Tubes are mechanically expanded into the fins for a permanent
primary-to-secondary surface bond, assuring maximum heat
transfer efficiency.
The headers of water coils are equipped, as standard, with a bleed
orifice at the highest point and a drain orifice at the lowest point.
Direct expansion coils are supplied complete with a distributor.
A droplet eliminator can be supplied as an option for use with
cooling coils. However, it is mandatory to use it when face air
velocity is higher than 2.7 m/s.
A drain pan, made of galvanized steel, is fitted underneath cooling
coils to collect condensates from coils, U-tubes and headers. Drain
pan has copper tube connection for condensate outlet.
Electric heaters
The electric heaters are comprised of a series of stainless steel,
sheathed heating resistances.
They are available in 3 capacity levels : BE1 (lower capacity), BE2
(medium capacity) and BE3 (higher capacity).
All electric heaters are pre-wired and connected to a terminal block
provided. Each electric heater is protected by a manual reset safety
thermostat.
The fan control must be interlocked with the electric heater control,
to ensure that the fan is running before the heater is switched on or
after the heater is switched off.
Filters
Filters are of panel type composed of cleanable synthetic media
and galvanized frame.
They are available in two efficiencies : 10 mm thick G2 and 50 mm
thick G4 filters.
Filters are mounted in external box and are supplied in several
elements for ease of removal.
They can be removed for cleaning or replacement from the unit
casing through the side or the bottom without removing the
connected duct.
Dampers / Mixing boxes
Dampers are provided for use as shut-off face damper or for use
in 2-way or 3-way mixing boxes where dampers are internally
mounted.
Sound attenuator
Sound attenuator is supplied for mounting at the fan discharge
side. The acoustic baffles are of single piece design with an even
density. They are covered by a protective non-defibrating fibre glass
veil, compacted at high temperature and guaranteed for air velocity
up to 15 m/s.
Optional features
- Inlet duct collar/Flexible connector
- Discharge duct collar/Flexible connector
- Suspension kit by threaded rods
- Suspension kit by threaded rods and hanger rails.
Filter removal from the side
Filter removal from the bottom
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