FWB-C
TeCHniCAL MAnuAL
4
1 MAIN FEATURES
PERFORMANCE AND COMPACTNESS IN RECESSED CEILING INSTALLATIONS
The FWB-C ducted unit has been conceived for air condition-
ing interiors where the installation of high-performance medi-
um-head units with reduced overall dimensions is required. The
range features 8 models with air flows of from 300 to 1200 m3/h
with over 70Pa available static pressure and cooling powers
from 2 to 8 kW.
The heat exchanger enables FWB-C to be used under a whole
variety of operating conditions. The weight-bearing structure in
fact houses a 3- or 4-rows exchanger which can be combined
with an additional 1- or 2-rows exchanger for exceptional perfor-
mance even with low temperature differentials.
Heat exchanger can be optimized for centralized applications
such as district cooling. FWB-C was designed to ceiling horizon-
tal installation.
The main condensate drip tray is situated inside the structure of
the unit and is at a positive pressure relative to the drain outlet
to facilitate condensate drainage.
A wide range of wall-mounted controllers is available, includ-
ing microprocessor controllers with display. Heating elements
complete with safety devices are available to supplement the
hydronic system.
2 MAIN COMPONENTS
STRUCTURE
Built from galvanised steel sheet, heat and sound insulated by
means of Class 1 self-extinguishing panels. Reduced height to
facilitate installation in a horizontal position in a false ceiling. The
structure incorporates a drip tray and condensate drain outlet.
The bearing structure allows to combine a large range of acces-
sories in suction and air delivery in order to obtain the optimized
unit configuration.
ELECTRIC MOTOR
Single-phase asynchronous multi-speed electric motor with permanently connected capacitor and thermal protector, mounted on
vibration-damping supports.
AIR FILTER
Washable air filter, made of acrylic fibre, filtration class G3, applied on the air intake; may be pulled out from below.
AIR INTAKE
Air intake from the front or bottom of the unit, according to system requirements.
HEAT EXCHANGER
High efficiency standard with 3 rows, but also available with 4
rows upon request, heat exchanger made with copper piping
and aluminium fins blocked to pipings by mechanical expan-
sion, provided with brass manifolds and air vent valve.The heat
exchanger usually comes with water connections mounted on
the left, but it can be turned by 180°. High-efficiency heat ex-
changers optimized for district cooling applications are availa-
ble on request.
FANS
Double suction centrifugal fans made with ABS or aluminium, with statically and dynamically balanced forward-curving blades,
directly coupled to the electric motor.
