ISC II0 pages
ISC II
Centrifugal air cooler
General information & application
Air coolers with centrifugal fans are specifically designed for
air sock applications in mainly working and packaging rooms,
where low air velocities and uniform hydrometric conditions
are essential. The ISC II series has a wide capacity range.
Units are designed for an easy maintenance with immediate
access to the inspection areas. This series is available as
direct expansion evaporator and brine unit cooler.
Refrigerants
Capacities (SC2)
all H(C)FC, brine
13 up to 127 kW
Heat exchanger coil
The heat exchanger coil is designed to achieve optimal cooling capacity thanks to the staggered tube pitch that gives
a high secondary fin surface. This large fin surface ensures
longer intervals between defrost cycles, therefore reducing
the amount of daily energy used.
DX coils are manufactured with high efficiency internally
grooved copper tubing to minimize the internal refrigerant volume. For water/glycol applications, the coil is designed with
same tube pitch and smooth 5/8” copper tubing.
Refrigerant connections for water glycol are threaded, vent
and drain plug are standard. The ISC II range is available with
fin spacings 4, 6 and 8 mm.
Frame and Casing
All units are manufactured with corrosion resistant materials. Coil frame AluZinc, casing pre-galvanized epoxy coated
sheetsteel, drip tray in aluminum coated.
The cooler construction has been designed to ensure easy
installation and maintenance. A large, deep drip tray allows
fast discharge of defrost water and the hinged construction
allows for easy access. Structural parts are fastened with
stainless steel bolts and screws. All panels are hinged for
easy accessibility, installation, and maintenance.
Fan motors
Centrifugal fans available in three different sizes. Fan motors
are Efficiency Class IE2, 4-poles, single speed, 400V/ 50 or
60Hz/3 phase. Protection class IP 55. Each unit is selectable
in 4 levels of AESP (Available External Static Pressure), with
single or double fans and 2 speed levels.
ISC II
Different transmission ratios are provided by different combination of pulleys and two belt drives. Motors may be regulated by an external cutting phase control or an external inverter.
Design Pressure
Design pressure H(C)FC DX 33 bar, brine 6 bar. Each heat
exchanger is leak tested with dry air and finally supplied with
a nitrogen pre-charge.
Floor mounting supports
as an optional extra.