Airwell SLS 2702 [28/77] English
Макгруп McGrp.ru
Задайте вопрос
Зарегистрироваться

Airwell SLS 2702 [28/77] English

Airwell SLS 3202 [28/77] English
Page 27
English
General Description
7.2 General specifications
The SLS units are supplied complete and provided
with all connecting pipes for the refrigerant and in-
ternal wiring.
The refrigeration circuit of each unit undergoes a
pressure test, is drained, vacuumised, dehydrated
and filled with refrigerant, and includes the neces-
sary oil. Once assembled, each unit is subjected to a
complete final testing and the correct operation of all
refrigeration circuits is checked.
The base and the frame of each unit are made of
very thick galvanised sheet, and are secured by
stainless steel screws and bolts. All panels are se-
cured by screw and tropicalised steel bolts, they can
be disassembled for easy access to internal compo-
nents. All panels can be disassembled for easy ac-
cess to internal components. All galvanised steel
parts are painted with white polyester resin (RAL
9001).
7.3 Compressors
The SLS units are provided with high power, high ef-
ficiency and low vibration level semi-hermetic screw
compressors. The capacity control, of the step type,
is handled by capacity control solenoid valves, han-
dled by the microprocessor of the appliance.
7 GENERAL DESCRIPTION
7.1 Introduction
The SLS units are water chillers/air-water heat
pumps with screw compressors provided with two or
four refrigeration circuits.
These units are fit for cooling and heating water or
intermediate fluids (glycoled water) for air-condition-
ing applications or industrial processes.
Standard / High Efficiency Versions Description
Options Description
SLS Base Low Noise Version (BLN)
SLS Low Noise Version (LN)
SLS Extra Low Noise Version (ELN)
Chillers/ heat pumps with air condensation, work-
ing with R134a
SLS/D
SLS/R
The motor’s terminals are weatherproof, according
to standard IP-54.
7.4 Refrigeration circuits
Units SLS STD, from 1402 up to 4802 (15 sizes),
have two independent refrigeration circuits with a
scroll compressor each and “Shell & Tube” heat ex-
changers. Twin units from SLS 5004 up to 8404 (8
sizes) have four independent circuits with screw com-
pressor each and “Shell & Tube” heat exchangers.
SLS HE (High Efficiency) units from 1402 up to 4802
(15 sizes) have two independent circuits with screw
compressors each and “Shell & Tube” heat exchang-
ers. Twin units from 4804 up to 8404 have four inde-
pendent circuits with screw compressor and “Shell &
Tube” heat exchangers.
Each refrigerant circuit includes: a service valve for
refrigerant filling, shutoff valves for suction lines (on
request), as well as for the delivery and liquid lines,
a thermostatic expansion valve with external equaliz-
er, a solenoid valve that makes it possible to
start/stop the compressor, a dehydrating cartridge
filter, a sight glass with humidity indicator, a differen-
tial oil pressure switch. Furthermore, each circuit is
equipped with safety devices in accordance with
PED 97/23/EC: high and low pressure switches,
safety valves providing protection in case of fire or
malfunction of compressors.
The units are fit for outdoor installation of the roof of
a building or at ground level.
The series includes the following versions:
Available options:
The heat recovery is carried out through a desuperheater mounted on the compres-
sor’s delivery line.
The unit features an additional water heat exchanger on the gas discharge line fitted in parallel
with the standard cooling circuit. The heat recovery function is by means of a four-way valve.
SLS1-en.qxp 29-06-2007 15:37 Pagina 27

Содержание

Похожие устройства

Скачать