Lennox EMEA FRIGA-BOHN eCO2Boost XS 1 User manual

eCO2Boost XS 2
1
Split System
eCO2Boost XS 2
INSTALLATION
INSTRUCTIONS
www.lennoxemea.com
N° IN0043100-A
06.2019

eCO2Boost XS 2
2

eCO2Boost XS 2
3
1. Product specifications
(1) Conditions: T° Ambient + 32°C, Compressor speed: 80hz * without pipe cover
Evaporating temperature -35 °C -30 °C -10 °C -5 °C +5 °C
Cooling capacity 2.0 kW 2.16 kW 4.33 kW 4.87 kW 5.6 kW
Electric power input 2.11 kW 2.13 kW 2.62 kW 2.76 kW 2.78 kW
Operation
temperature
Evaporation (Min/Max) -35 ~ +5 °C
Ambient (Min/Max) -25 ~ +43 °C
Dimensions* Height x Width x Depth 1.300 x 1.100 x 281 mm
Weight 107 kg
Noise level (1) 1 meter away 49 dB(A)
Compressor
Type Inverter hermetic Scroll
Speed (Min/Max) 35 ~ 80 Hz
Heat exchanger Type Aluminium microchannel
Refrigerant Type / GWP R744 CO2 / 1
Power supply Phases / Voltage / Frequency 1 phase / 230 / 50 or 60 (-/V/Hz)
Communication Standard Modbus
PED Category 1
Maximum working pressure (MWP)
High pressure side 14 MPa
9 MpaLow pressure side
TABLE OF CONTENT
1. Product specifications
2. Product diagram
3. Operation diagram
4. Installation instruction
5. Handling
6. Piping connection
7. Power supply connection
8. External ON/OFF control signal
9. Piping and vacuuming
10. CO₂charging
11. Parameters changing
12. First level of maintenance
13. Fault Tree Analysis
14. Installation check-up
15. Code error list
16. Troubleshooting

eCO2Boost XS 2
4
2. Product diagram

eCO2Boost XS 2
5
3.2. Operation diagram: LT application
3.1. Operation diagram: MT application
5 1
2
3
4
Loop-A
Loop-C OFF
MT (Te -5℃- T ambiant 10 ℃)
5
1
2
3
4
6
7
8
9
Loop-A Loop-C
MT (Te -5℃- T ambiant 25 ℃)
1
2
3
4
5
6
7
8
9
Loop-A
(CLA)
Loop-C
(CHC)
CDU
1
2
3
4
5
6
7
8
9
Loop-A
Loop-C
MT (Te -30℃ T ambiant 25 ℃)
1
2
3
4
5
6
7
8
9
Loop-A
(CLA)
Loop-C
(CHC)
CDU
Compressor
Accumulator
Cascade
Heat Exchanger Gas Cooler
EEV
EEV Compressor
Gas Cooler
LOOP C
Unit Cooler MTor LT
LOOP A
2
3
4
15
1
23
4
LT loop A (Te -30℃/ T ambient 25℃)
Pressure
Enthalpy
23
1
4
5
23
4 1
LOOP C
LOOP A
MT loop A (Te -5℃/ T ambient 25 ℃)
Pressure
Enthalpy
2
15 LOOP A
23
4 1
LOOP C
4 3
MT loop A (Te -5℃/ T ambient 10℃)
Pressure
Enthalpy
2
15
LOOP C: OFF
LOOP A
3/4
3. Operation diagrams

eCO2Boost XS 2
6
1. Piping length
MT: < 30m (risk of capacity drop & poor lubrication if > 30m)
LT: < 20m (risk of capacity drop & poor lubrication if > 20m)
2. Evaporator volume
MT : < 15,000cc (risk of poor lubrication if > 15,000cc)
LT: < 5,000cc (risk of poor lubrication if > 5,000cc)
3. Cooling capacity
4. Performance drop
* Please follow requirement to avoid performance drop and ensure good lubrication of the compressor.
Requirement for CDU* installation design conditions
4.1. Installation design of CDU
Capacity [kW]
Ambient
Temperature (℃)
Evaporating temperature (℃)
-35 -30 -20 -15 -10 -5 0 +5
32 2.00 2.16 2.46 3.47 4.33 4.87 5.44 5.60
38 1.91 2.02 2.40 2.81 4.02 4.70 5.06 5.19
Pipe length [m] 10 m 20 m 30 m
MT @ Te -5°C 1.2% 2.4% 3.6%
LT @ Te -30°C 2.3% 4.5% -

eCO2Boost XS 2
7
4.2. Installation place
Installation conditions:
Provide space above the equipment to allow it to be opened (access for maintenance /
reparation operations).
Provide at least 500 mm of free space on the right-hand side.
Provide at least 500 mm of free space on the left-hand side and the front and back.
Installation conditions
• Provide space on the top of product for the opening of product casing.
• Provide at least 500 mm of free space on the left and right-hand side and the front and back.
4.3. Installation condition
1. Install the equipment in a dry and well-ventilated location, where air isn't recycled.
2. Place the equipment in a location sheltered from direct sunlight, heat sources and cold wind.
If exposing the equipment to direct sunlight is unavoidable, protect the device with a canopy.
3. Choose a location where the noise produced by the refrigerating unit will not disturb any close
neighbors. The noisiest parts are located on sides and at the back of the unit.
4. The air outlet must not be directed towards house windows or plantations.
5. Place the equipment on a solid, smooth surface.
6. Place the equipment in a location where dust and debris do not risk being sucked
into the evaporator fins.
7. In regions where significant snowfalls occur, always place the equipment under a roof,
a shelter or a snow-proof tarpaulin.
8. Choose a location that is protected from strong winds.
9. Avoid locations exposed to oil splashes, salt (within 2km from coast),
sulfur gas (nearby hot water springs), volcanic area.
10. To avoid any interference, the refrigerating unit must be installed at a minimum distance
of 3 m from any device producing or receiving electromagnetic waves (e.g. radio).
Protect direct sunlight and
then do not disturb fan air flow
CDU :
Distance 500 mm
from wall or barrier
5. Handling
When raising the refrigerating unit, always observe the following
safety precautions:
1. Protect any parts that are in contact with hoisting ropes,
e.g. using cardboard.
2. When the refrigerating unit is raised, do not go beneath it.
3. Weight CDU: Product weight: 95kg
Total weight including packaging: 105kg
4. This product's weight is not evenly distributed.
In particular, take care to avoid any shocks and sudden
movements when transporting and raising the equipment.

eCO2Boost XS 2
8
Low-pressure*equipment*(Evaporator)*
Low-pressure*equipment*
(Evaporator)*
1. Optimal distance between CDU and evaporator :
MT: < 30m (risk of capacity & lubrication)
LT: < 20m (risk of capacity & lubrication)
2. Pipes Material
3. Pipes insulation: 32 mm.
4. Avoid CO2pipes contact with other conducts or pipes.
5. Avoid installation in corrosive environment.
CDU connection Diameter Material Thickness [mm] MWP [bar]
Discharge pipe only 1/4” (6,35 mm) Hard copper 1 245
Both (discharge and suction pipe) 3/8” (9,52 mm) K65 0.65 120
Hard copper 1 155
Pipe slope
> 0°
OIL RETURN
Evaporator
CDU
Suction pipe Suction pipe
Refrigerant
discharge pipe Refrigerant
discharge pipe
Thermal insulation
material
Thermal insulation
material
INCORRECT CORRECT
6.1. Piping connection
Unit cooler
Condensing unit
Electronic
expansion valve
Thermal insulation
covering the entire
length of tubing
Less than 5m
Siphon
every 5m
Refrigerant fluid
Suction tube
Condensing unit
Thermal insulation
covering the entire
length of tubing
Less than 10m
Unit cooler Solenoid
Valve
Suction tube
Refrigerant fluid
Solenoid
valve
Electronic
expansion valve

eCO2Boost XS 2
9
6.3. CDU connected to several evaporators
6.2. Fluid connection
REMARKS
It’s not necessary to add expansion valve on evaporator because the CDU has its own expansion valve.
Add just thermostat device with defrost control
9
REMARKS
Expansion valve for each evaporator. One Pressure sensor by loop.
Evaporator volume
MT : < 15000cc ( if more, risk of poor lubrication).
LT: < 5000cc ( if more, risk of poor lubrication).
Evaporator volume
MT : < 15000cc ( if more, risk of poor lubrication).
LT: < 5000cc ( if more, risk of poor lubrication).
CDU
CDU
Compressor
Accumulator
Cascade
Heat Exchanger Gas Cooler
EEV
EEV Compressor
Gas Cooler
LOOP C
Unit Cooler
LOOP A
Thermostat
Service valve
Check valve
LP/HP sensor
Ambient temp. sensor
HP
LP
HP
LP
UNIT COOLER VOLUME
MT : < 15000cc ( if more risk of poor lubrication).
LT : < 5000cc ( if more risk of poor lubrication).
REMARKS
It’s not necessary to add expansion valve on unot cooler because the CDU has its own expansion valve.
Add just thermostat device with defrost control
7. CDU power supply connection
Single Phase 230V electrical connection
Rated power 3,6 kW
Voltage 230V/1 AC
Frequency 50-60Hz
Electric consumption 2,4 kW
Rated current 10,7 A
Electrical power 4,2 kVA
Ground fault circuit breaker 12 A
POWER SUPPLY
Product side*
COMMUNICATION
Product side*
COOLING DEMAND
Product side*
Power supply*Master controller*Cabinet controller*
+*-*CLA*GND*GND*R*N*CLB*
For neutral systems requiring differential protection (TT mode for example) select a protection type:
- Class B differential switch - 300 mA, when a circuit breaker is already installed upstream.
- SI type differential circuit breaker - 300 mA, if no circuit breaker is installed.

eCO2Boost XS 2
10
8.2. Electrical connection (Thermostat & 1 evaporator)
P
N
Supply
thermostat
Contact
fan
Contact
defrost
Fan Resistance
CDU
CLA
Dry
contact
8.3. Electrical connection (DANFOSS regulator & several evaporators)
P
N
AKCC 1 AKVH 1
AKCC
Comp AKCC
Defrost
KA1 RES 1
21
22
5
6
AKCC
AKVH
12
14
10
11
CDU
CLA
2
1
21
22
REMARKS: The contact of auxiliary relay KA…(NO) must be wiring in parallel on the CDU ( contact CLA )
Mandatory to supply 1 of the AKVH during the ramp down of the CDU to avoid discharge pressure cut.
AKVH control R14 = 01 (On/Off)
KA1
(NC)
KA2
(NC)
KA1
(NO)
KA2
(NO)
FAN 1
AKCC
Fan
AKCC 2 KA2
AKCC
Comp
RES 2 FAN 2 AKVH 2
AKCC
Defrost AKCC
Fan
AKCC
AKVH
EVAPORATOR 1 EVAPORATOR 2
11
10 14
12
5
6
15 15
16
16
1
2
8.1. External ON/OFF control signal
SYSTEM CONTROL LOGIC
1. The compressor speed will change in order to achieve the low pressure set point decided by installer.
2. The low pressure is function of the evaporating temperature required for the showcase
(Tev = Tair_sc – ∆T).
3. CDU EEV control the high pressure of each cycle. (optimal value as function of ambient temperature)
DEFROST CONTROL LOGIC
1. CDU compressors and fans should stop before the evaporator defrost.
2. Defrost(compressor stop) signal should be sent to CDU before the EEV controller.
3. Compressors will stop gradually before 3 minutes.

eCO2Boost XS 2
11
9.2. CDU connection to the unit coolers
9.1. Piping and vacuuming process
1. Brazing connection pipe
1-1. Check that cabinet EEV is completely opened.
1-2. Before brazing, insert 2bar nitrogen gas flow into pipe for preventing deposition
of any oxide film on the inner surface of the piping, and also avoid heating up
service valve by wet towel cover etc.
1-3. During brazing, be careful for burning insulation and any CDU components.
2. Leakage test
2-1. Power supply on CDU & wait 20 sec for initializing system.
2-2. Charge Nitrogen gas in 80bar or 55bar if using 60bar relief valve.
2-3. Check brazed part using leakage detector or leakage test liquid (formability).
3. Vacuuming
3-1. Set R744(CO₂) manifold, vacuuming pump, CO₂vessel and CDU service port.
3-2. Connect CO₂charge tube, vacuuming tube, and each equipment.
3-3. Check connector and each tube are closed tightly.
3-3. Loose service valve rod in middle position (3 way opening) before vacuuming.
3-4. Vacuuming for 2-3 hours inside pressure keeping -1bar (vacuuming status).
4. Setting parameter value
4-1. Change loop parameter set depending on target evaporating temperature
during vacuuming process (suction pressure default value 3,0MPa).
1. Remove
process pipe
2. Insert pipe 3. Brazing pipe
9.3. Service valves connexion and handling
1. Untightened
the protection caps
3. Untightened
the compression packing
2. Connect the CDU
to the manifold
Outlet Male G 3/8’’
Example of connexion
Inlet G 3/8’’ female
Outlet ¼’’ SAE
4. Service valve handling
Condensing unit
Condensing unit
Condensing unit
Piping
Piping
Piping
Pressure
gage
Pressure
gage
Pressure
gage
Valve in “Rear position”.
The pressure gage is
insulated from the circuit.
Valve in “Front position”.
The condensing unit is
insulated from the rest of
the circuit.
Valve in “intermediate
position”.
All outlet communicate.
ON / OFF operation switch

eCO2Boost XS 2
12
10.2. CO₂charging amount estimation
Unit cooler volume
Piping length
10.1. CO2charging process
1. Check CO2amount for each unit cooler and piping volume from graph (see paragraph 10.2).
2. Set CO2vessel on the weight scale, purge air inside charge tube and 0 setting scale before charging.
3. Break the vacuum by charging the installation in gas state up to a pressure of 10 bar on all the circuits.
4. Charge CO2without compressor running (liquid state) (charging from suction side service valve).
5. Compressor start running(push operation SW) if CO2charging stop before reaching target weight.
6. Close service valve after CO2weight reaching target amount.
7. Keep & check cooling operation until unit cooler air or cabinet temperature is reached at target temperature.
8. Check low pressure until reaching target & operation conditions(both of CO2& air side) are stable.
9. Compare actual high pressure & discharge pressure from the target table (see paragraph 10.3).
10. Charge more 50g CO2if high pressure is lower or discharge temperature is higher than table value.
11. Continue “5.10” process until operation status within ±0.2MPa in pressure, ±5K in discharge temperature for
each target value.

eCO2Boost XS 2
13
10.3. Check operation value
Target discharge temperature T_dis[℃]
Ambient temperature
T_amb[℃]
40 35 30 25 20 15 10 5 0 -5
Evaporating temperature
T_e[℃]
5 9.86 9.86 9.45 8.78 8.11 7.43 6.76 6.50 6.50 6.50
0 9.86 9.86 9.45 8.78 8.11 7.43 6.76 6.50 6.50 6.50
-5 9.86 9.86 9.45 8.78 8.11 7.43 6.76 6.50 6.50 6.50
-10 9.00 9.00 9.00 8.78 8.11 7.43 6.76 6.50 6.50 6.50
-15 8.00 8.00 8.00 8.00 8.00 7.43 6.76 6.50 6.50 6.50
-20 6.50 6.50 6.50 6.50 6.50 6.50 6.50 6.50 6.50 6.50
-25 6.00 6.00 6.00 6.00 6.00 6.00 6.00 6.00 6.00 6.00
-30 5.50 5.50 5.50 5.50 5.50 5.50 5.50 5.50 5.50 5.50
-35 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00 5.00
Target discharge temperature T_dis[℃]
Ambient temperature
T_amb[℃]
40 35 30 25 20 15 10 5 0 -5
Evaporating temperature
T_e[℃]
5 93.3 93.3 89.1 81.8 74.1 64.4 55.5 51.9 51.9 51.9
0 101.6 101.6 97.4 89.9 82.0 72.0 62.9 59.2 59.2 59.2
-5 110.5 110.5 106.1 98.5 90.4 80.2 70.9 67.1 67.1 67.1
-10 110.3 110.3 110.3 107.7 99.4 89.0 79.5 75.6 75.6 75.6
-15 107.6 107.6 107.6 107.6 107.6 98.4 88.7 84.7 84.7 84.7
-20 96.1 96.1 96.1 96.1 96.1 94.5 94.5 94.5 94.5 94.5
-25 98.3 98.3 98.3 98.3 98.3 96.8 96.8 96.8 96.8 96.8
-30 100.4 100.4 100.4 100.4 100.4 98.8 98.8 98.8 98.8 98.8
-35 102.2 102.2 102.2 102.2 102.2 100.7 100.7 100.7 100.7 100.7
1. High pressure target
2. Discharge temperature target
ENTERING EACH CYCLE PARAMETER LIST (A, B, & C-PARAMETER)
1. Press simultaneously 3 button : ▼+▲+ right button (SET) for 3 secs from normal display
2. ”CLA” blinking on display (A-parameter)
3. Press ▼or ▲if changing each parameter set as “CHC”
4. Press right button (SET) if entering each loop parameter set (A00, A01, …)
5. Press ▼or ▲if changing parameter set value
6. Press only right button (SET) for 3 secs if going back to normal display
ENTERING COMMON PARAMETER LIST (P-PARAMETER)
1. Press only right button (SET) for 3 secs from normal display
2. ”P00” blinking on display (P-parameter)
3. Press right button (SET) if moving other P-parameter (P01, P02, …)
4. Press ▼or ▲if changing parameter set value
5. Press only right button (SET) for 3 secs if going back to normal display
SET
11.1. CDU parameters change process

eCO2Boost XS 2
14
11.3. Reading parameters list
N° Code Content Range Unit Step
1 PH Superheat temperature (= tu - ti) for CHC -99 to +99 K 1
2 TS Suction temperature (CLA & CLB) -50 to +90 °C 1
3PS Suction pressure 0 to +15.0 MPaG 0.1
4PD Discharge pressure 0 to +15.0 MPaG 0.1
5 TD Discharge temperature -40 to +156 °C 1
6TI Plate heat exchanger inlet temperature -50 to +90 °C 1
7 TU Plate heat exchanger outlet temperature -50 to +90 °C 1
8TR EEV opening degree 0 to 990 pls 1
9 CI Compressor speed 0 to 255 Hz 1
10 TOL PCB box temperature (N/A) -50 to +106 °C 1
11 TAR Ambient temperature -50 to +106 °C 1
12 FF1 Gas cooler fan motor speed (lower side) 0 to 999 rpm 1
13 FF2 Gas cooler fan motor speed (upper side) 0 to 999 rpm 1
14 FU1 Gas cooler fan DCV output (lower side) 0 to 6.00 V 0.01
15 FU2 Gas cooler fan DCV output (upper side) 0 to 6.00 V0.01
16 PSO Target suction pressure -0.8 to +14.0 MPaG 0.1
17 PDO Target discharge pressure -0.8 to +14.0 MPaG 0.1
18 CO Target compressor speed 0 to 90 Hz 1
11.2 Parameters adjustment according
to evaporator temperature set point
ParameterUnit Factory
set
Tev ≥
-5℃
Tev ≥
-10℃
Tev ≥
-15℃
Tev ≥
-20℃
Tev ≥
-25℃
Tev ≥
-30℃
Tev ≥
-35℃
P08MPa 3.03.03.02.02.02.02.02.0
A/B01MPa 2.02.01.81.61.31.10.90.9
A/B02MPa3.03.02.52.21.91.61.31.1
A/B05℃ -10-25-25-25-25-25-25-25
A/B14℃ 3333271914123333
A/B20/13413413413413413400
A/B23/2121212121212119
C01MPa2.02.02.02.02.01.51.51.5
C26℃ 881188888
C27Hz4040403535353535
C44℃ 55855556
C45K550.50.50.50.50.50.5

eCO2Boost XS 2
15
11.4. CO2main properties
Pressure as function of evaporating temperature
P-H diagram of R744 (CO2)
Point Temperature Relative
pressure
Absolute
pressure
Densité
Liquide
Liquid
density
Liquid
enthalpy
Steam
enthalpy
Liquid
entropy
Steam
entropy
(C) (MpaG) (MPa) (kg/m3) (kg/m3) (kJ/kg) (kJ/kg) (kJ/kg-K) (kJ/kg-K)
1-35 1,1 1,2024 1096,4 31,216 123,05 436,23 0,70794 2,023
2-34 1,1 1,2452 1092,4 32,326 125,1 436,37 0,71634 2,018
3-33 1,2 1,2891 1088,3 33,469 127,15 436,51 0,72474 2,0129
4-32 1,2 1,3342 1084,1 34,644 129,2 436,62 0,73311 2,0079
5-31 1,3 1,3804 1079,9 35,854 131,27 436,73 0,74148 2,0029
6-30 1,3 1,4278 1075,7 37,098 133,34 436,82 0,74982 1,998
7-29 1,4 1,4763 1071,5 38,378 135,41 436,9 0,75816 1,993
8-28 1,4 1,5261 1067,2 39,696 137,5 436,96 0,76649 1,988
9-27 1,5 1,577 1062,9 41,051 139,59 437,01 0,77481 1,9831
10 -26 1,5 1,6293 1058,6 42,445 141,69 437,04 0,78311 1,9781
11 -25 1,6 1,6827 1054,2 43,88 143,79 437,06 0,79141 1,9732
12 -24 1,6 1,7375 1049,8 45,356 145,91 437,06 0,79971 1,9683
13 -23 1,7 1,7935 1045,3 46,875 148,03 437,04 0,80799 1,9633
14 -22 1,8 1,8509 1040,8 48,437 150,16 437,01 0,81627 1,9584
15 -21 1,8 1,9096 1036,3 50,045 152,3 436,96 0,82455 1,9535
16 -20 1,9 1,9696 1031,7 51,7 154,45 436,89 0,83283 1,9485
17 -19 1,9 2,031 1027 53,402 156,61 436,81 0,8411 1,9436
18 -18 2,0 2,0938 1022,3 55,155 158,77 436,7 0,84937 1,9386
19 -17 2,1 2,1581 1017,6 56,959 160,95 436,58 0,85765 1,9337
20 -16 2,1 2,2237 1012,8 58,816 163,14 436,44 0,86593 1,9287
21 -15 2,2 2,2908 1008 60,728 165,34 436,27 0,87421 1,9237
22 -14 2,3 2,3593 1003,1 62,697 167,55 436,09 0,88249 1,9187
23 -13 2,3 2,4294 998,14 64,725 169,78 435,89 0,89078 1,9137
24 -12 2,4 2,501 993,13 66,814 172,01 435,66 0,89908 1,9086
25 -11 2,5 2,574 988,06 68,967 174,26 435,41 0,90739 1,9036
26 -10 2,5 2,6487 982,93 71,185 176,52 435,14 0,91571 1,8985
27 -9 2,6 2,7249 977,73 73,471 178,8 434,84 0,92405 1,8934
28 -8 2,7 2,8027 972,46 75,829 181,09 434,51 0,9324 1,8882
29 -7 2,8 2,8821 967,12 78,261 183,39 434,17 0,94076 1,883
30 -6 2,9 2,9632 961,7 80,77 185,71 433,79 0,94915 1,8778
31 -5 2,9 3,0459 956,21 83,359 188,05 433,38 0,95756 1,8725
32 -4 3,0 3,1303 950,63 86,032 190,4 432,95 0,96599 1,8672
33 -3 3,1 3,2164 944,97 88,794 192,77 432,48 0,97444 1,8618
34 -2 3,2 3,3042 939,22 91,647 195,16 431,99 0,98293 1,8563
35 -1 3,3 3,3938 933,38 94,596 197,57 431,46 0,99145 1,8509
36 0 3,4 3,4851 927,43 97,647 200 430,89 1 1,8453
37 1 3,5 3,5783 921,38 100,8 202,45 430,29 1,0086 1,8397
38 2 3,6 3,6733 915,23 104,07 204,93 429,65 1,0172 1,834
39 3 3,7 3,7701 908,95 107,46 207,43 428,97 1,0259 1,8282
40 4 3,8 3,8688 902,56 110,98 209,95 428,25 1,0346 1,8223
41 5 3,9 3,9695 896,03 114,62 212,5 427,48 1,0434 1,8163
42 6 4,0 4,072 889,36 118,41 215,08 426,67 1,0523 1,8102
43 7 4,1 4,1765 882,55 122,34 217,69 425,81 1,0612 1,8041
44 8 4,2 4,2831 875,58 126,44 220,34 424,89 1,0702 1,7977
45 9 4,3 4,3916 868,44 130,71 223,01 423,92 1,0792 1,7913
46 10 4,4 4,5022 861,12 135,16 225,73 422,88 1,0884 1,7847
12. First level of maintenance
1. Regular inspections
2. In case of dirt inside the CDU, clean the outdoor heat exchangers with soft brush or vacuum cleaner.
3. Water can be used in case of clogged heat exchanger.
(Noted: CDU operation should be stopped when using water cleaning for heat exchanger)

eCO2Boost XS 2
16
13. Fault Tree Analysis
13.2. Too much cooling
13.1. No cooling

eCO2Boost XS 2
17
14. Installation check-up
Item Check-up Result
Installation
Falling risks prevented with anchor bolts or
other attachment systems?
300 mm space around the heat
exchanger’s air intake surface ?
500 mm space in front of the unit ?
Height difference between CDU and
evaporator cabinet/chamber ?
Less than 30 m Distance between CDU
and evaporator ?
Electrical wiring
Differential circuit breaker installed?
Suitable earth fault differential circuit
breaker power rating?
Rated current
Rated sensivity?
Ground wiring correctly connected?
Screws correctly tightened?
Power supply insulation (230V circuit),
ground earth capacity 10 MΩminimum
Suitable wiring power capacity?
Power supply equal to 230 V ?
Piping
Service vavles opened
Leakage observed ( oil mark on pipe) ?
Piping clogged ( too much brasing
material) ?
Piping insulation (suction and discharge
pipe)?
CO2
Quantity of refrigerant fluid introduced?
[R744 refrigerant]
Refrigeration circuit A [quantity: kg] -
Circuit B [quantity: kg]
Refrigerant fluid leak?

eCO2Boost XS 2
18
Error Error type Alarm conditions CDU status In case of master
controller Recovery Conditions
EEE Microprocessor
error
Microprocessor
failure no operate Alarm activation no operate Repair
Err EEPROM error
Parameters have
been set out of
range
no operate Alarm activation
no operate Repair
E01
Maximum
discharge
temperature
triggered
Td ≥(Parameter
P01)°C during
(Parameter P02)
sec.
Default value:
P01=120 and
P02=60
no operate No alarm
Automatic recovery if :
Td ≤(Parameter P03)°C
after (Parameter P30)
x10sec.
Default: P03=100 and
P30=30
E02
Maximum
discharge pressure
triggered
Pd≥14 MPa no operate No alarm
Automatic recovery
if: Pd ≤10 MPa after(
Parameter P30) x10sec.
Default: P30=30
E10 Inverter
compressor error Next page E10-H…Next page E10-H…Next page E10-H…
E16 Gas cooler (top)
fan speed error
FF2 ≤(Parameter
P64)x10rpm x
(Parameter P65)
time.
Default value:
P64=30 and
P65=2
no operate Alarm activation
CDU no operate Repair
E17
Gas cooler
(bottom) fan
speed error
FF1 ≤(Parameter
P66)x10rpm x
(Parameter P67)
time.
Default value:
P64=30 and
P65=2
no operate Alarm activation
CDU no operate Repair
E20 High-pressure
sensor error
0 MPa ≥Pd ≥
15MPa during
3 seconds
0MPa=0,17V
15MPa=4,90V
no operate Alarm activation
CDU no operate
Automatic recovery if :
0 MPa ≤Pd ≤15MPa
E21 Low-pressure
sensor error
0 MPa ≥Ps ≥
15MPa during
3 seconds
0MPa=0,17V
15MPa=4,90V
no operate Alarm activation
CDU no operate
Automatic recovery if :
0 MPa ≤Ps ≤15MPa
15. Code error list

eCO2Boost XS 2
19
Error Error type Alarm conditions CDU status In case of master
controller
Recovery
Conditions
E23
Ambient air
temperature
sensor error
-30°C ≥TAR ≥100°C
during 3 seconds
-30°C = 129,3kΩ
100°C=1,02kΩ
operate
EEV=(A10paramete)
pls Default
value=480
Alarm activation
CDU operate
Automatic
recovery if :
-30°C ≤TAR ≤
100°C
E24
Discharge
temperature
sensor error
-15°C ≥Td ≥200°C
during 3 seconds
-15°C =
162kΩ
200°C=892Ω
no operate Alarm activation
CDU no operate
Automatic
recovery if :
-15°C ≤Td ≤
200°C
E26
Heat exchanger
inlet temperature
sensor error
-30°C ≥Ti ≥100°C
during 3 seconds
-30°C = kΩ
100°C=Ω
operate Alarm activation
CDU operate
Automatic
recovery if :
-30°C ≤Ti ≤
100°C
E27
Heat exchanger
outlet temperature
sensor error
-30°C ≥TU ≥100°C
during 3 seconds
-30°C = kΩ
100°C=Ω
operate Alarm activation
CDU operate
Automatic
recovery if :
-30°C ≤TU ≤
100°C
E40
Communications
error with master
controler (if using
an external
communication
system)
No communication
during 10 minutes
operate with local
target value
Alarm activation
CDU operate
Automatic
recovery if :
communication
restart with
master
E42
Inverter
communications
error
No communication
during 30 seconds no operate Alarm activation CDU no operate
Automatic
recovery if :
communication
restart
E50 EEV control error 1 Calculation error no operate Alarm activation
CDU no operate
Automatic
recovery if :
calculation is OK
E51 EEV control error 2 Calculation error no operate Alarm activation
CDU no operate
Automatic
recovery if :
calculation is OK
E70 Inverter control
error 1 Calculation error no operate Alarm activation CDU no operate
Automatic
recovery if :
calculation is OK
E71 Inverter control
error 2 Calculation error no operate Alarm activation CDU no operate
Automatic
recovery if :
calculation is OK
15. Code error list

eCO2Boost XS 2
20
Error Error type Alarm conditions CDU status In case of master
controller Recovery Conditions
E10-HO4
E10-HO8
E10-HOA
E10- H20
Inverter
overcurent error
compressor
overload no operate No alarm
Automatic recovery
after (Parameter P30)
x10sec.
E10-HOC
Heat sink high
level temperature
error
≥90°C no operate No alarm
Automatic recovery
after (Parameter P30)
x10sec and ≤80°C
E10-H10 Inverter overload
error
compressor
overload no operate No alarm
Automatic recovery
after (Parameter P30)
x10sec.
E10-H14 Inverter low input
voltage error
Inverter input
≤194 V or
≤220V with
variation of ≥50 V
during 1s
no operate No alarm
Automatic recovery
after (Parameter P30)
x10sec and ≥194 V
E10-H18 Inverter high input
voltage error ≥380 V no operate No alarm
Automatic recovery
after (Parameter P30)
x10sec and ≤380 V
E10-H1C
Inverter controller
communication
error
No connection
during 30 sec no operate No alarm
Automatic recovery
after (Parameter
P30) x10sec and
communication restart
E10-H24
E10-H28
E10-H3O
Inverter voltage
drop detection
Inverter input
≤140 V no operate No alarm
Automatic recovery
after (Parameter P30)
x10sec. And ≥140 V
E10-H2C Control PCB power
supply error
no signal on
controller no operate No alarm
Automatic recovery
after (Parameter P30)
x10sec. And signal
receive from controller
E10-H38 Inverter phase
shift error
Rotor ans stator
phase shift no operate No alarm
Automatic recovery
after (Parameter P30)
x10sec.
E10-H40 Heat sink
thermistor error
-20°C > T >
130°c no operate Alarm Activation
Automatic recovery
after (Parameter P30)
x10sec. And -20°C < T
< 130°c
E10-H44
E10-H46
E10-H48
E10-H4C
Converter
overcurent error
compressor
overload no operate No alarm
Automatic recovery
after (Parameter P30)
x10sec.
E10-H5O
E10-H52
E10-H54
E10-H56
Compressor
operation error
compresor
do not start no operate Alarm Activation
Automatic recovery
after (Parameter P30)
x10sec.
15. Code error list