Lennox EMEA FRIGA-BOHN eCO2Boost XS 2 Installation Instructions Manual
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Summary of Contents for Lennox EMEA FRIGA-BOHN eCO2Boost XS 2
- Page 1 INSTALLATION INSTRUCTIONS Split System eCO2Boost XS 2 N° IN0043100-A 06.2019 www.lennoxemea.com eCO2Boost XS 2...
- Page 2 eCO2Boost XS 2...
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Page 3: Table Of Contents
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. CO₂ charging 11. Parameters changing 12. First level of maintenance 13. ... -
Page 4: Product Diagram
2. Product diagram eCO2Boost XS 2... -
Page 5: Operation Diagram
3. Operation diagrams Gas Cooler LOOP C Compressor Cascade Heat Exchanger Gas Cooler Compressor LOOP A Accumulator Unit Cooler MT loop A (Te -5℃ / T ambient 10℃) MT loop A (Te -5℃ / T ambient 25 ℃) LOOP C LOOP C: OFF LOOP A LOOP A... - Page 6 4.1. Installation design of CDU Requirement for CDU* installation design conditions 1. Piping length < 30m (risk of capacity drop & poor lubrication if > 30m) < 20m (risk of capacity drop & poor lubrication if > 20m) 2. Evaporator volume MT : <...
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Page 7: Handling
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. CDU : Distance 500 mm Protect direct sunlight and... -
Page 8: Piping Connection
6.1. Piping connection 1. Optimal distance between CDU and evaporator : MT: < 30m (risk of capacity & lubrication) LT: < 20m (risk of capacity & lubrication) 2. Pipes Material CDU connection Diameter Material Thickness [mm] MWP [bar] Discharge pipe only 1/4”... -
Page 9: Power Supply Connection
6.2. Fluid connection Ambient temp. sensor Gas Cooler LOOP C Compressor Cascade Heat Exchanger Gas Cooler Compressor Service valve Accumulator LOOP A Check valve LP/HP sensor Thermostat Unit Cooler UNIT COOLER VOLUME MT : < 15000cc ( if more risk of poor lubrication). LT : <... -
Page 10: External On/Off Control Signal
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 –... -
Page 11: Piping And Vacuuming
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. -
Page 12: Co₂ Charging
10.1. CO charging process 1. Check CO amount for each unit cooler and piping volume from graph (see paragraph 10.2). 2. Set CO vessel 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. ... - Page 13 10.3. Check operation value 1. High pressure target Target discharge temperature T_dis[℃] Ambient temperature T_amb[℃] 9.86 9.86 9.45 8.78 8.11 7.43 6.76 6.50 6.50 6.50 9.86 9.86 9.45 8.78 8.11 7.43 6.76 6.50 6.50 6.50 9.86 9.86 9.45 8.78 8.11 7.43 6.76 6.50...
- Page 14 11.2 Parameters adjustment according to evaporator temperature set point Factory Tev ≥ Tev ≥ Tev ≥ Tev ≥ Tev ≥ Tev ≥ Tev ≥ Parameter Unit -5℃ -10℃ -15℃ -20℃ -25℃ -30℃ -35℃ P08 3.0 3.0 3.0 2.0 2.0 2.0 2.0 2.0 A/B01...
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Page 15: First Level Of Maintenance
11.4. CO main properties Pressure as function of evaporating temperature Relative Absolute Densité Liquid Liquid Steam Liquid Steam Point Temperature pressure pressure Liquide density enthalpy enthalpy entropy entropy (MpaG) (MPa) (kg/m (kg/m (kJ/kg) (kJ/kg) (kJ/kg-K) (kJ/kg-K) 1,2024 1096,4 31,216 123,05 436,23 0,70794 2,023... -
Page 16: Fault Tree Analysis
13. Fault Tree Analysis 13.1. No cooling 13.2. Too much cooling eCO2Boost XS 2... -
Page 17: Installation Check-Up
14. Installation check-up Item Check-up Result Falling risks prevented with anchor bolts or other attachment systems? 300 mm space around the heat exchanger’s air intake surface ? Installation 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 ? -
Page 18: Code Error List
15. Code error list In case of master Error Error type Alarm conditions CDU status Recovery Conditions controller Microprocessor Microprocessor Alarm activation no operate Repair error failure no operate Parameters have Alarm activation been set out of EEPROM error no operate Repair no operate range... - Page 19 15. Code error list In case of master Recovery Error Error type Alarm conditions CDU status controller Conditions -30°C ≥ TAR ≥ 100°C operate Automatic Ambient air during 3 seconds EEV=(A10paramete) recovery if : Alarm activation temperature -30°C = 129,3kΩ pls Default CDU operate -30°C ≤...
- Page 20 15. Code error list In case of master Error Error type Alarm conditions CDU status Recovery Conditions controller E10-HO4 Automatic recovery E10-HO8 Inverter compressor after (Parameter P30) no operate No alarm E10-HOA overcurent error overload x10sec. E10- H20 Heat sink high Automatic recovery level temperature after (Parameter P30)
- Page 21 16. Troubleshooting EEE: Microcomputer error Likely cause Check points Solution Control PCB failure ON / OFF operation switch Replace the control PCB Err: EEPROM error Likely cause Check points Solution Control PCB failure Parameters Confirm setting adjustment Reintegrate the 7 segments’ out of range value values...
- Page 22 16. Troubleshooting E16: Gas cooler (top) fan speed error E17: Gas cooler (bottom) fan speed error Likely cause Check points Solution Propeller Fan locked Check for any object blocking the fan Remove object Fan motor failure Fan motor connector input signal Replace fan motor 1. ...
- Page 23 16. Troubleshooting E40: Communications error with master controler (if using an external communication system) Likely cause Check points Solution Bad contact on communication Wiring connection and 1. Plug and unplug the connector 2. wire Communications cable conductivity Replace wire disconnected Control PCB output signal Control PCB failure Replace control PCB...
- Page 24 LENNOX EMEA reserves itself the right to make changes at any time without preliminary notice. www.lennoxemea.com eCO2Boost XS 2...
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