Table of Contents
Advertisement
1.
overview
1.1.
General
Cooling Unit Cooler
The Cooler is a complete one-piece cooling unit for comfort
cooling in air handling systems. All the refrigeration and
electrical components are interconnected and housed in one
common casing. The units are test run prior to delivery.
The coils are designed for installation in the ducting. The
arrangement of piping between the cooling unit and the
coils and the electrical wiring of the cooling unit is carried
out at the building site.
The Cooler can be used together with an air handling unit.
The capacities of the six sizes are however matched to the
size 08-60 GOLD air handling system and the size 004-014
Basic air handling units.
Compressors
Sizes 14, 18, 4 and 34 each have two-piston compres-
sors. Sizes 48 and 60 each have two compressors as well,
but they are of Scroll-type.
Partially indirect system (sizes 14 and 18)
The size 14 and 18 Coolers have a partially indirect system.
On the warm side, a coil (condenser) is used for direct-
evaporating refrigerant, while on the cold side, there is a
heat exchanger, where energy is transferred to the water
mixed with glycol (brine) circulated to the cooling coil in
the supply air duct. The circuits must be filled with a mix-
ture of water and 30% ethylene glycol after the unit has
been installed.
The condenser coil is integrated into the cooling unit fitted
in the exhaust air duct.
Fig. 1
Specifications are subject to alteration without notice.
Complete indirect system (sizes 24, 34, 48 and 60)
The size 4-60 Coolers have a complete indirect system.
Heat/cooling energy is transferred across a heat exchang-
er from the refrigerant to the circulating water mixed with
glycol. Both the brine circuit and the cooling agent circuit
must be filled with a mixture of water and 30% ethylene
glycol after the unit has been installed.
Fig. 2
refrigerant
Cooler has double refrigerant circuits which are sepa-
rate from one another. The refrigerants used are of type
R407C and R134A in each circuit respectively, each with
its own compressor. On delivery, the refrigerant circuits
are charged. These refrigerants do not have any known
impact on the ozone layer and there are no known restric-
tions for their use at this present time.
refrigerant volume
See section 14. General Technical Data.
reporting obligation
The user is required to submit periodic reports to the local
inspectorate only if the total charge volume exceeds 10
kg.
Annual inspections
Annual inspections by an accredited inspectorate are
required if the volume of refrigerant in the one-piece unit
exceeds 3 kg. This is applicable to the size 4, 34, 48 and
60 Coolers only.
Quality Management System to iSo 9001 and
environmental Management System to iSo 14001
Swegon maintains documented and certificated Quality
Management and Environmental Management Systems
that meet the provisions of ISO 9001 and ISO 14001
respectively.
gB.Cooler.inSt.060501
www.swegon.se
3
Advertisement
Table of Contents
