18
1
2
3
4
5
6
7
8
9
10
4.3 FAN DECK
The centrifugal motor, single- or double-shaft, is single phase with permanently connected capacitor and thermal protection of
the windings; protection grade IP 41 (optional protection grade IP44). Units 222÷328 have six speeds motors. Units 112÷220
have single-speed motor and are provided with 6 speeds (by using a transformer), 3 of them factory wired as standard. If
an electric shock occurs to the unit, the autotransformer is also a protection for the motor: in this case it will burn before the
shock damages the motor.
The motor and the scrolls are fixed on a galvanized steel basement (12/10 mm thick for models 110÷218 and 15/10 mm
thick from size 220÷328): the motor is located in a proper cradle and fixed with elastic ribbon supports. On request, motor
for sizes 222÷328 are also available with ball bearings.
Each fan assembly is dynamically balanced, to reduce noise and wear of the components to minimum levels; it can easily be
COMPATIBILITY
Model
SV
SV/AF
SH
SH/AF
CV
CV/AF
CH
CH/AF
PV
PV/AF
PH
PH/AF
SVR
CVR
B2 (2 rows)
• • • • • • •
B3 (3 rows)
• • • • • • •
B4 (4 rows)
• • • •
B2 + BA1 (*)
• • • • • •
B3 + BA1 (*)
• • • • • •
B4 + BA41 (**)
• •
BE3 (direct expansion)
• • • • •
BE3 + BA1 (*)
• • • • •
(*) BA1: additional 1 row coil for 4 pipe systems; the coil (for heating only) is placed inside the inner frame, in addition to 2 or 3 row coils.
(**) BA41: additional 1 row coil for 4 pipe systems; the coil (for heating only) is placed outside the frame, fixed on the air outlet.
4. COMPONENTS
4.1 INNER FRAME
The inner frame consists of 2 sides and a back panel assembled together, and of a movable element (condensate tray). It is
made of galvanised steel: 8/10 mm thick for models up to size 218, 10/10 mm thick starting from size 220.
The sides have a special structure near the coil connections in order to avoid the headers’ deformation while connecting the
unit to the system (anti-torsion structure).
All the inner elements are completely lined with closed cell thermal insulation material.
The insulated condensate tray can be taken apart independently of the other components and it is perfectly effective both in
vertical and in horizontal position.
The condensed water is discharged from the side (left or right, by choice), through a 20 mm external diameter header.
4.2 COILS
The coils consist of aluminium fin packs and mechanically expanded copper tubes.
Max operating pressure: 16 bar. Testing pressure: 30 bar. Standard water connections are on the right side of the unit, facing
the air outlet; however the coils can be easily removed and reversed on site. Each header is provided with a very handy air
valve, to allow air venting or water drainage from the coil. All water connections are ½“ G (female threaded).
Sigma and Concealed models (sizes 220÷328) are also available with District Cooling coils, designed with a reduced
number of circuits, suitable for functioning with high water temperature difference.
Maximum operating pressure: 16 bar (without valves).
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