Danfoss GLT80TDC Instruction Manual

Danfoss Light Commercial
Refrigeration Compressors
GLT80TDC
Direct Current, 24-42V, Mobile Applications
Application guidelines
http://cc.danfoss.com

Content
About the product................................................................................................................4
Installation and application................................................................................................5
Wiring and Connections ......................................................................................................6
The serial port interface ......................................................................................................8
Operating voltage................................................................................................................9
Battery protection system ................................................................................................10
Setting up the speed.......................................................................................................... 12
Programming the electronic driver..................................................................................13
Protections and alarms......................................................................................................14
Compressor cooling ...........................................................................................................14
Technical Data ....................................................................................................................15
Supply .................................................................................................................................17
3FRCC.PC.041.A1.02

About the product
Many vehicles for transportation of goods or
recreation, such as trucks, caravans, boats, cars,
etc. are often equipped with cooling appliances
and air conditioners. The compressors for
such mobile applications must be designed to
operate from a low voltage DC power supply.
These compressors must also be compact in
their dimensions, highly reliable and yield high
performances.
GLT80TDC is an answer to the needs of users
requiring comfort and reliability in their
travelling, either on holidays, at work or in any
other circumstance where a DC powered air
conditioner is utilised. The GLT80TDC is designed
to operate silently, eciently and reliably even
up to angles of tilt of 20º, and works with the
environmentally friendly refrigerant R134a. Its
design is based on the“L”series, which has been
successfully present in the market since 1964,
and has had sales of more than 200 million units.
GLT80TDC is designed for capillary tube
expansion and can be powered at 24 and 42V
DC, and also at 12V with some restriction. Each
unit is supplied with a dedicated electronic driver
(FDC3), which features all the protections for
both the battery and the driver itself, including
the compressor motor. The driver automatically
adjusts itself to the voltage of the power supply.
Evaporating temperature range: -25ºC to +10ºC.
Condensing temperature range: up to 65ºC. Pull-
down peak: 70ºC.
Ambient temperature range: -10 to 55ºC (65ºC at
starting).
In case of ambient temperature lower than 0ºC,
an oil heater will be needed.
The electronic control unit FDC3 is supplied with
the exclusive Serial Port Interface (SPI), featuring
a RJ45 telephone type connector. SPI allows the
electronic driver to be connected to a computer
for programming purposes using the FxC
programming package (hardware and software,
provided by the manufacturer upon request),
and allows the communication with an Electronic
Integral Manager of the appliance (EIM), and
making the compressor work in slave mode.
FDC3 electronic driver includes Smart Speed® as
programming option, which is a plug-in system
for automatically self adapting compressor
speed to current thermal load in refrigerating
appliances.
Smart Speed® reduces number of thermostat
cycles by minimizing compressor speed,
enlarging on-time at every thermostat cycle,
so that start/stop energy loses are substantially
reduced. Lowest speed yields also highest
evaporating temperature, and so highest C.O.P.
and lowest energy consumption. Pull-down is
done at maximum programmed speed, so pull-
down time is very short with respect to xed
speed systems. No design parameters neither of
the compressor nor the appliance are required to
be programmed, so Smart Speed® can be easily
used in all appliances with no design eorts.
FDC3 electronic driver includes Sleep and Sleep
Energy Saving as programming option, which are
plug-in systems specially conceived for mobile
air conditioners avoiding any other electronic
device. Sleep and Sleep Energy Saving make the
air conditioner work for four hours since start-
up. Sleep Energy Saving makes the compressor
run at maximum programmed speed during
the rst hour, when highest cooling capacity is
needed, and lowers progressively the compressor
speed up to minimum velocity three hours
later. Maximum comfort and minimum energy
consumption are thus achieved.
GLT80TDC starting capability is as low as 10 V
under any balanced pressure; it also admits a
certain remaining dierential pressure when
thermostat o-time is abnormally short. For
improving even more the starting capability,
FDC3 electronic driver can be programmed with
a 3 minutes minimum thermostat o-time. The
delay is a programming option which can be
easily enabled by means of the FxC programming
kit.
FDC3 also includes a 1 second lter at the
thermostat input to prevent the appliance from
wrong operation due to typical micro switching
produced by vibrations in those appliances that
t tilt switches at the thermostat circuit. So,
analogical ltering is not needed.
4FRCC.PC.041.A1.02

Installation and application
The maximum tilt angle allowed in GLT80TDC
compressor (stopped or running) in any of the
2 below mentioned recommended positions
is 20º, and maximum tilt angle in the 2 below
not recommended position is 15º. Apart
from this specication, below diagrams show
the recommended and not recommended
positions while the compressor is running in the
application.
If compressor has been stopped during a certain
period of time with an inclination higher than
15º, it is strongly recommended to not start
up the compressor immediately after coming
back to the correct position. We recommend
waiting at least 30 minutes before starting up the
compressor.
GLT80TDC compressor is not designed for o-
road mobile applications. If you are interested
in this type of mobile applications, it has to be
specically approved by the manufacturer.
Maximum tilt angle
O-road applications
RECOMMENDED POSITIONS
β max=20º
NOT RECOMMENDED POSITIONS
α max=15º
Fig 1. Maximum tilt angle
5FRCC.PC.041.A1.02

Wiring and Connections
GLT80TDC must always be powered through
the dedicated electronic driver FDC3, which
is supplied with the compressor as a separate
device.
NEVER CONNECT THE COMPRESSOR HERMETIC
PINS (FUSITE) TO THE TERMINALS OF A BATTERY
OR ANY OTHER DC OR AC SOURCE DIRECTLY.
DO NOT TRY TO FIT AN ELECTRONIC DRIVER
OTHER THAN THE FDC3. THE COMPRESSOR WILL
NOT OPERATE AND IRREVERSIBLE DAMAGE MAY
OCCUR.
The FDC3 driver is directly connected to the
battery poles as well as to the compressor pins.
It checks battery voltage and adjusts itself to the
voltage value for proper compressor operation,
or switches itself o if the battery voltage is not
adequate. The driver also controls the compressor
speed.
ALWAYS RESPECT THE POLARITY OF THE BATTERY
WITH THE POWER INPUT TERMINALS OF THE
ELECTRONIC DRIVER
The unit is protected against damage caused by
wrong polarity of the supply. The compressor will
not run correctly if it’s wrongly connected.
“-“ NEGATIVE POWER INPUT TERMINAL OF THE
ELECTRONIC DRIVER SHOULD BE EARTHED, TO
THE CHASSIS OF THE VEHICLE AS WELL AS THE
APPLIANCE FRAME*
A FUSE MUST BE PLACED BETWEEN THE “+”POLE
OF THE BATTERY OR DC POWER SUPPLY AND THE
“+” POWER INPUT TERMINAL OF THE ELECTRONIC
DRIVER*
12V SYSTEMS: 30A FUSE
24V SYSTEMS: 30A FUSE
42V SYSTEMS: 20A FUSE
* In some special vehicles chassis is connected to
“+” terminal of the battery instead of “-“ terminal
(positive reference systems). In such cases“+”
should be understood as“-“ and vice-versa. In
systems powered by a variable DC source, the
fuse should be selected following the rules above
mentioned, considering the maximum voltage at
the variable DC Source.
General rules
Voltage drop in the
power leads
To avoid excessive voltage drop in the leads, their
length and cross section must be related to the
voltage supply as indicated in Table 1.
Table 1: Maximum length
of leads (m)
Cross section
mm2
Rated Operating Range
12 - 14 V 24 - 28 V 36 - 42 V
4 2.5 2.5 3
6 4 4 6
10 6 6 9
If any kind of connector or switch is placed
between the battery poles and the power
terminals of the electronic driver, its resistance
should be less than 10mΩ. If the resistance is
higher than 5mΩ, the maximum length of the
wires indicated in Table 1 should be halved or the
cross section doubled.
In case of using a long cable to connect battery
and electronic driver, it is recommended using a
cable with low inductance.
6FRCC.PC.041.A1.02

Wiring and Connections
Wiring Diagram
Fig 2: FDC3 wiring
scheme
Fig 3: Connection of FDC3
driver to the compressor
The FDC3 electronic driver features a terminal
board where all connections are made. The
terminal lay out is described in Figure 2:
7FRCC.PC.041.A1.02

The serial port interface
The electronic control unit FDC3 is supplied with
the exclusive Serial Port Interface (SPI), featuring
a RJ45 telephone type connector. This port
allows the electronic driver to be connected to
a computer for programming purposes using
the FxC programming package (hardware and
software) provided by the manufacturer upon
request. Optionally, the SPI can be congured to:
• Install a LED to display the intervention of any
alarm.
• Set up either the compressor speed or the
battery protection level, through physical
connections between IN1, IN2 and COM.
• Connect the electronic driver as slave to an
Electronic Integral Manager of the appliance with
serial communication capabilities (Rx, Tx and
COM), to allow working with variable speed. SPI
provides a 5 V output, limited to 25mA, to power
up the EIM.
TO PROGRAM THE ELECTRONIC FDC3 DRIVER
BY MEANS OF THE FXC PROGRAMMING KIT THE
FDC3 DRIVER MUST BE POWERED BY THE BATERY.
Figure 4 Shows the RJ45 male connector which
can be plugged to the SPI and the usage of each
terminal in it.
Fig 4: SPI terminals
8FRCC.PC.041.A1.02

Operating voltage
GLT80TDC is designed to operate in a wide range
of DC voltages, supplied either by a battery or by
any other kind of ltered DC power supply.
DC VOLTAGE SUPPLY ALLOWED: 10V to 42.4V
• Standard (Default):
From the value of the applied voltage, the
electronic driver automatically decides the rated
voltage range of the supply. Three possible
ranges are considered:
12 to 14V: actual voltage is below 17V
24 to 28V: actual voltage is within 17 and
33V 36 to 42V: actual voltage is within 33 and
42.4V
• Special (programming option):
The compressor can be powered by a variable DC
source as, for instance, a photovoltaic panel, in
which the output voltage strongly depends on
the intensity of sunlight radiation. In these special
cases the driver should be programmed with
rated, minimum and maximum voltages. These
values should be within the allowable DC voltage
power supply (10 V to 42.4V).
Rated voltage and voltage limits are programmed
by the appliance manufacturer by means of a PC
connected through the serial port to the driver
Serial Port Interface, using the FxC programming
package provided by the manufacturer upon
request.
Functional modes
9FRCC.PC.041.A1.02

Battery protection system
There is a protection system for the battery that
prevents the compressor from operating if the
available voltage becomes too low. The battery
protection level should be set up as following:
• By programming:
Voltage limits for battery protection can be freely
set, by the customer for every system (12-14V,
24-28V, 36-42V or special) by means of the serial
port of a PC connected to the SPI port of the
electronic driver using the FxC programming
package provided by the manufacturer upon
request. In that option cut-out and cut-in values
must respect the rule dened by Table 2.
In Table 2, ΔV is the dierence between cut-out
and cut-in, that is, the cut-in value is the result of
adding ΔV to the cut-out value.
Table 2. Limits of battery
protection parameters
Table 3. IN1, IN2 and COM
connection for battery
protection set up 0=open
connection; 1=shortened
Rated voltage
range (V)
Cut-out (V) ΔV
min max min max
12-14 9,0 12,0 1,0 1.5
24-28 20,0 26,0 2,0 3,0
36-42 34,0 40,0 2,0 3,0
Special 9,0 40,0 1,0 3,0
• Externally, using COM, IN1 and IN2 of SPI:
· This option prevents from the possibility of
setting up the speed externally using COM, IN1
and IN2 of SPI as dened in point 6.
· The external battery protection set up option
must be previously programmed for external
adjustment of the protection limits.
· Voltage limits are set up by means of a PC
through its serial port connected to the
electronic driver SPI. It can be done by the
customer itself using the FxC programming
package.
· The cut-out (battery voltage at which the
driver stops operating) and the cut-in (battery
voltage at which driver re-starts operation
after a cut-o) values are set up by connecting
the SPI connector terminals IN1 and IN2 to
COM. according to the connection made, four
protection levels can be selected as shown in
Table 3.
Protection limits (V) Rated operating voltage range
Protection
level
Connection to COM 12-14 V 24-28 V 36-42 V
IN1 IN2 cut-out cut-in cut-out cut-in cut-out cut-in
Standard 0 0 10,0 11,5 22,0 24,5 36,0 38,5
Low 1 0 9,0 10,5 20,0 22,5 34,0 36,5
High 0 1 11,0 12,5 24,0 26,5 38,0 40,5
Very high 1 1 12,0 13,5 26,0 28,5 40,0 42,5
10 FRCC.PC.041.A1.02

Setting up the speed
It is possible to operate the compressor at xed
or variable speed under dierent running modes,
options and parameters. The electronic driver
is supplied by the manufacturer with standard
running mode and external control of the
speed, with minimum speed of 2,000 rpm. and
maximum speed 3,500 rpm. Default running
mode, options and parameters can be changed
to optimize compressor performance for a given
appliance, by programming, connecting a PC
to the SPI by means of the FxC programming
package provided by the manufacturer upon
request. Running modes and options are:
• Standard mode:
Compressor speed is a xed programmed
value or switched externally from programmed
minimum and maximum value in four steps.
The switch should be connected to the SPI and
should remain plugged during compressor
operation.
When setting up a xed speed, maximum speed
can be limited by the available battery voltage in
the following way, maximum speed would be:
· 2,000 rpm when the battery voltage is equal to
the cut-in voltage.
· Programmed xed speed when the battery
voltage is equal to or greater than the maximum
nominal voltage (14V, 28V and 42V for 12V, 24V
and 42V systems respectively).
· A linear function of the battery voltage in the
range between the cut-in and the maximum
nominal voltages.
This option is particularly useful for eutectic
plates systems.
If external switching is programmed, the speed
is set up by the connection of the SPI connector
terminals IN1 and IN2 to COM for minimum,
maximum speeds, and two intermediate
velocities according to Table 4:
External speed set up option must be previously
programmed for external adjustment of its
minimum (Smin) and maximum (Smax) limits.
External switching prevents from the possibility
of setting up the battery protection externally
using COM, IN1 and IN2 of SPI as dened in point
5.
• Smart Speed® mode:
Compressor will run at variable speed at its
highest performance depending of the current
thermal load. The speed can be limited by a
xed programmed value and even more by the
available battery voltage as described in standard
mode. The speed can also be limited by external
switching in the same way as described in
standard mode.
Table 4. External
selection of the velocity
0=Open connection
1=Shortened
Connection to COM Speed of the motors (rpm)
IN1w IN2
0 0 Smin
1 0 Smin+1/3 (Smax-Smin)
0 1 Smin+2/3 (Smax-Smin)
1 1 Smax
11FRCC.PC.041.A1.02

Setting up the speed
NO SWITCH (MANUAL I/O, TILT, ETC.) IS ALLOWED
TO BE CONNECTED IN SERIES WITH THE
THERMOSTAT. IF ELECTRONIC THERMOSTATS
ARE TO BE FIT, AVOID THOSE THAT INCORPORATE
MANUAL I/O SWITCH AND/OR STARTING DELAY.
• Sleep mode:
Compressor will run during four hours after
start-up. The speed can be limited by a xed
programmed value and even more by the
available battery voltage as described in standard
mode. The speed can also be limited by external
switching in a similar way as described in
standard mode according to table 5:
If o sleep mode is selected, the appliance will
run continuously at selected xed speed Smin or
Smax.
• Sleep Energy Saving mode:
Compressor will run during four hours. During
rst hour compressor will run at selected speed.
During next three hours speed will decrease up
to 2,000 r.p.m. Programming Sleep Energy Saving
is done in the same way as Sleep.
• Slave mode:
Under this mode, variable speed is controlled by
an Electronic Integral Manager of the appliance
(EIM) permanently connected to the electronic
driver FDC3 through the SPI, using its serial
communication capability. The EIM reads the
current temperature inside the appliance,
compares it with the set point temperature, and
decides if the compressor should operate or not,
and if so, at which speed. The EIM communicates
how the compressor should operate and,
eventually, records and displays any abnormal
circumstance that might occur. For details about
the communication protocol, please contact
Danfoss.
IF ANY VARIABLE SPEED MODE IS TO BE
PROGRAMMED, CHECK CAREFULLY FOR TUBES,
CONDENSER AND EVAPORATOR RESONANCES.
NATURAL FREQUENCIES SHOULD BE 75 Hz UP TO
AVOID VIBRATIONS.
Table 5. External
selection of the velocity
0=Open connection;
1=Shortened
Connection to COM Speed of the
motors (rpm) Sleep mode
IN1 IN2
0 0 Smin o
1 0 Smin on
0 1 Smax o
1 1 Smax on
12 FRCC.PC.041.A1.02

Programming the electronic driver
In order to program the electronic driver FDC3,
a personal computer together with the FxC
programming package are required (provided by
the manufacturer upon request). To this purpose,
perform the following steps:
1. Install the programming software, following
the instructions of the wizard.
2. Connect the programming interface to a PC
using the serial cable supplied with the hardware.
3. Power on the programming interface using the
AC/DC adapter supplied with the hardware.
4. Connect the FDC3 electronic driver to the
programming interface using the double RJ45
cable supplied with the hardware.
5. Run the programming le FDC.exe.
6. From the top menu, load an existing
conguration and go to step 9, or go through
step
7. Select the running mode, options and
parameters, between:
7.1 Standard mode.
7.1.1 Select maximum xed speed and enter a
value within 2,000 and 3,500 r.p.m. as described
in point 6, if desired select speed limited by
available battery voltage, or
7.1.2 Select external switcher connected to SPI
and enter low and high speed values within 2,000
and 3,500 r.p.m. as described in point 6. External
speed selection is incompatible with external
battery protection (step 8.2).
7.2 Smart Speed® mode. Select maximum xed
speed or external switcher connected to SPI and
proceed as described in 7.1.1 or 7.1.2 respectively.
7.3 Sleep and Sleep Energy saving modes. Select
maximum xed speed or external switcher
connected to SPI and proceed as described in
7.1.1 or 7.1.2 respectively.
7.4 Slave mode
8. Select the battery protection mode and the
protection parameters from:
8.1 Internal protection: choose between normal
and special voltage systems.
8.1.1 For normal voltage systems, enter cut-out,
cut-in and maximum voltage values for every
voltage system, accounting for the limits shown
in Table 2 of point 5.
8.1.2 For special voltage systems, enter cut-out,
cut-in and nominal and maximum voltage values
accounting for the limits shown in Table 2 of
point 5.
8.2 External protection. Protection values are
shown in Table 3 of point 5. External protection is
incompatible with external speed selection (step
7.2).
9. Select thermostat delay 3 minutes for
improved starting.
10. Click “Apply”. The FDC3 electronic driver
is now programmed and ready to drive the
compressor.
11. From the top menu, save the current
conguration if desired.
12. To program another FDC3 unit, plug it in,
apply current conguration or return to step 6 to
change conguration.
13. Click exit to nish.
13FRCC.PC.041.A1.02

Protections and alarms
GLT80TDC is electronically protected against a
number of possible malfunctions and failures:
• Battery discharge: refer to point 5 for details.
• Fan over current: protects the compressor and
the electronic driver against fan over current due
to start or running overload, or short-circuit.
• Starting failure: if the running speed is not
achieved during the starting sequence, the unit
stops and retries the start up after one minute.
• Compressor overload: This protection operates
when the compressor speed drops below the
set up speed, or when the current drawn in is
excessive, thus preventing the appliance from
operating under overload conditions, causing
refrigerating overload or compressor failure.
• Electronic driver overheat: In case the
temperature of the electronic components of the
control becomes too high, an internal sensor will
stop the unit.
When the alarm is on, ten automatic attempts
to restart the compressor will be available.
In case of battery protection, the number of
automatic attempts to restart is unlimited.
Once the sequence of automatic attempts to
restart the compressor is nished, the unit will
remain permanently unable to operate until it
is switched o and on again from the power
supply. The intervention of the thermostat during
the sequence of automatic restart attempts
interrupts and resets the sequence.
The SPI can be congured in a way that a LED can
be connected between terminals 3 and 4 (see Fig.
2 in point 3) in order to display the intervention
of any alarm, and to identify its cause. The
visualisation consists of a sequence of ashes
of the LED repeating every 5 seconds, until the
cause of the alarm disappears. The code of the
ashing sequence corresponding to each alarm is
indicated in Table 6:
No. of ashes Type of failure
1 Battery protection
2 Fan over current
3 Starting failure
4 Compressor overload
5 Electronic driver overhead
7 Internal error
In case of an alarm display, if the FDC3 electronic
driver is connected as a slave to the appliance’s
Electronic Integral Manager (EIM) through the
SPI, a digital alarm code will be transmitted to the
EIM, which in turn will manage the information
for displaying and acting purposes.
GLT80TDC should always be fan cooled. FDC3
electronic driver has its own fan to cool its power
components -. Best results are obtained when
both, but enough compressor and driver are
cooled with fresh air coming directly fresh air
is needed in the surroundings of the electronic
driver to be cooled properly from outside, before
being heated up in appliance condenser.
Table 6. Alarm
codication
Compressor Cooling
14 FRCC.PC.041.A1.02

Technical Data
Compressor
Displacement cm38.10
Diameter mm 24.29
Stroke mm 17.48
Net weight kg 10.2
Oil type ISO VG 22 ESTER
Oil charge cm3330
Reliability GLT80TDC pass following reliability tests:
• High Temperature: according with CECOMAF GT-4002 standard
• Wear: according with CECOMAF GT-4003 standard
• ON/OFF: according with CECOMAF GT-4004 standard
• Vibrations: according with ASTM 5728 Level I standard
Application
Application MBP - HBP – A/C
Refrigerant R134a
Evaporation temp. range ºC -25 to +10
Expansion system CAPILLARY
Compressor cooling Fan
Max. ambient temperature ºC 43
Motor
Type Brush-less, Sensor-less, PMM
Phase number 3
Pole number 6
Locked rotor current (12, 24, 42 V) A 12, 12, 8
Resistance at 25ºC (R-S/R-T/S-T) Ω 0.36
Electrical
Voltage V DC 12 to 42
Voltage range V DC 10 to 42.4
15FRCC.PC.041.A1.02

Technical Data
Electronic driver
Model FDC3
Type Fully digital & programmable μP based
Supported devices
12V/0.5A Fan
Compressor speed or battery protection level switcher
Alarm LED
15V/25mA electronic thermostat
5V/25mA Electronic Integral Manager
Communication port Serial Port Interface (SPI)
Communication capabilities RS-232 serial port 2-digit, 4-level switcher
Alarm LED
Compressor speed selection By programming or switching*
Battery protection level selection By Programming or switching*
*only one at a time
Protections
Battery protection
Fan over current
Starting failure
Compressor overload
Electronic driver overheat
Fan over current
Starting failure
Compressor overload
Electronic driver overheat
Programmable running modes
Standard
Smart Speed
Sleep
Sleep Energy Saving
Slave
Setup by default
Running mode: Standard
Speed selection: external switcher
Lower/higher speed: 2000/3500 r.p.m.
Battery protection: xed voltage level; standard system
Cut-out (12/24/42 V systems): 12/22/38,5 V
Cut- in (12/24/42 V systems): 10.8/20.0/36.2 V
3 minutes thermostat delay: on
Test Conditions
Evaporating temperature ºC +7,2
Condensing temperature ºC 55
Liquid temp. entering expansion ºC 32
Ambient and return temp. ºC 35
Voltage V DC 24
*Only for voltage supply V DC 24-42
Nominal performance at rpm 2000 2500* 3000* 3500*
Cooling capacity W 577 712 842 968
Cooling capacity kCal/h 497 613 725 834
Input power W 247 315 388 468
EER kCal/(Wh) 2.01 1,95 1.87 1.78
COP W/W 2.34 2,26 2,17 2,07
Current A 10.3 13.1 16.2 19.5
16 FRCC.PC.041.A1.02

Technical Data
Fig.5: GLT80TDC outline
drawing
Condensing temperature = 55ºC
Ambient and suction temperature = 35ºC
Liquid subcooling = 9K
Test voltage = 24V DC
*Only for 24-42 V DC voltage supply
r.p.m. T evap = -25ºC T evap = -10ºC T evap = +7,2ºC
Q (W) COP Q (W) COP Q (W) COP
2,000 116 1.15 264 1.64 577 2.34
2,500 142 1.13 330 1.62 712 2.26*
3,000 168 1.11 395* 1.58* 842 2.17*
3,500 192 1.09 454* 1.54* 968 2.07*
r.p.m. T evap = -25ºC T evap = -10ºC T evap = +7,2ºC
Pe (W) I (A) Pe (W) I (A) Pe (W) I (A)
2,000 101 4.21 162 6.75 247 10.3
2,500 127 5.29 204 8.5 315* 13.1*
3,000 152 6.33 251* 10.5* 388* 16.2*
3,500 177 7.38 296* 12.3* 468* 19.5*
Performance data
Supply GLT80TDC compressor including FDC3 electronic driver (120 pieces pallets).
17FRCC.PC.041.A1.02

Danfoss Commercial Compressors
is a worldwide manufacturer of compressors and condensing units for refrigeration and HVAC applications. With a wide range
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leaders in our business, and positioned us as distinct variable speed technology specialists. Today we operate from engineering
and manufacturing facilities spanning across three continents.
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Our products can be found in a variety of applications such as rooftops, chillers, residential air conditioners,
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