elco AEROTOP L, Руководство планировщика

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General information
Standard unit technical specifications
Compressor Range 54–61kW
Inverter controlled rotary-type hermet-
ic compressor equipped with a motor
protection device for overheating,
overcurrents and excessive tempera-
tures of the supply gas. It is installed
on anti-vibration mounts and it is
equipped with oil charge. The com-
pressor is wrapped in a sound-
absorbing hood, that reduces its
sound emissions and it thermally insu-
lates it. A crankcase heater, which
starts automatically, keeps the oil
from being diluted by the refrigerant
when the compressor stops.
Compressors are connected in tan-
dem on a single refrigerating circuit
with a dedicated system for the oil
recovery
Range 65–88 kW
Direct expansion heat exchanger
Scroll hermetic compressor with
steam injection controlled by inverter,
complete with motor over-temperature
and over-current devices and protec-
tion against excessive gas discharge
temperature. It is installed on anti-
vibration mounts and it is equipped
with oil charge. The compressor is
wrapped in a sound-absorbing hood,
that reduces its sound emissions and
it thermally insulates it.
A crankcase heater, which starts au-
tomatically, keeps the oil from being
diluted by the refrigerant when the
compressor stops.
Compressors are connected in tan-
dem on a single refrigerating circuit
with a dedicated system for the oil
recovery .
Structure
Supporting structure realized with
steel with zinc-magnesium superficial
traitment painted with polyester pow-
der RAL 9001, that ensures excellent
mechanical features and high long-
term resilience against corrosion.
Paneling
External RAL 9001 painted zinc-
magnesium sheet metal panelling that
ensures superior resistance to corro-
sion for outdoor installation and elimi-
nates the need for periodic painting.
Each panel can be easily removed to
allow full access to internal compo-
nents.
Internal exchanger

Direct expansion heat exchanger,
brazed AISI 316 stainless steel
plates, in pack without seals using
copper as the brazing material, with
low refrigerant charge and large
exchange surface.

The exchanger comes complete
with:

external thermal insulation no-
condensation, thickness 17 mm, in
expanded polypropylene (EPP)

antifreeze heater to protect the wa-
ter side exchanger, preventing the
formation of frost if the water tem-
perature falls below a set value.

flow switch

anti-ice probe
External exchanger
c coil exchanger made with copper
pipes placed on staggered rows me-
chanically expanded to better adhere
to the fin collar.
Fins are made from aluminum with
hydrophic treatment that allows the
correct evacuation of condensing wa-
ter and optimizes defrosting.
Fins have a special corrugated sur-
face and they are appropriately dis-
tanced to ensure the maximum heat
exchange efficiency. n.
Fan
Helical fans with 4 profiled blades
made of reinfoced plastic, directly
coupled to the DC brushless motor
with electronic control, IP 54 execu-
tion.
Fans are located in aerodynamically
shaped structures to increase efficien-
cy and minimize noise level, equipped
with accident prevention steel guards.
Refrigeration circuit

Refrigeration circuit with: Direct ex-
pansion heat exchanger

filter dryer

liquid receiver

pressure transducer (high/low)

refrigerant temperature probe

electronic expansion valves

non return valve4-way reverse-cycle
valve

high pressure safety pressure
switch

low pressure safety pressure switch

low pressure safety valve

return liquid separator

oil separator
Refrigeration circuit

cooling system of the of the electri-
cal control panel using undercooled
liquid
Only for range 65–88 kW:

economizer exchanger
Electrical panel

main door lock isolator switch

phase monitor

auxiliary components protection fuse

compressor protection fuse

fan motor thermal protections

interface terminal with graphic dis-
play

intuitive graphical interface retro
lighted

display of operating status

Unit On/Off and overload reset

manual changing of the operating
mode (hot or cold)

management of the operating pa-
rameters

daily, weekly programmer of temper-
ature set-point and unit on/off

self-diagnosis system with immedi-
ate display of the fault code

compressor overload protection and
timer

relay for remote cumulative fault
signal

potential-free contact for remote on-
off control

potential-free contact for summer /
winter change

potential-free contacts for compres-
sor status

serial port with modbus port (RS485)
for remote communication
Test
Unit subjected to factory-tested in
specific steps and test pressure of the
piping of the refrigerant circuit (with
nitrogen and hydrogen), before ship-
ping them