Lennox EMEA FRIGA-BOHN eCO2Boost XS 1, Руководство по установке

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eCO2Boost XS 2
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7. CDU power supply connection
Rated power 3,6kW
Voltage 230V AC
Frequency 50/60Hz
Electric consumption 2,4kW
Rated curent 10,7A
Electrical power 4,2kVA
Ground fault circuit breaker 12A
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)
4. Showcase EEV control the superheat of the refrigerant at the evaporator outlet or showcase
air 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.
4. The EEV closing should be done 3 minutes after sending the defrost signal to CDU.
5. In case of multi-evaporators, the defrost of these evaporators should be simultaneous
(only MT cooling mode)