Lennox eCO2Boost L, Руководство по установке

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eCO2Boost XS 3
12
Unit cooler volume
Piping length
10.2. CO
₂
charging amount estimation
10.1. CO
2
charging process
1. Check CO
2
amount for each unit cooler and piping volume from graph (see paragraph 10.2).
2. Set CO
2
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. Charge CO
2
without compressor running (liquid state) (charging from suction side service valve).
5. Compressor start running(push operation SW) if CO
2
charging stop before reaching target weight.
6. Close service valve after CO
2
weight 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 CO
2
& air side) are stable.
9. Compare actual high pressure & discharge pressure from the target table (see paragraph 10.3).
10. Charge more 50g CO
2
if 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.