Manual pCoOEM Bicircuit - Rhoss

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8 DEFROST 8.1.1 Used inlets • Condenser temperature analogic inlet • Condensation pressure analogic inlet 8.1.2 Used parameters • Defrost type • Defrost starting temperature threshold • Defrost ending temperature threshold • Defrost starting pressure threshold • Defrost ending pressure threshold • Delay among following defrosts • Defrost activation delay • Defrost maximum last • Delay between compressor and valve at the defrost start • Delay between compressor and valve at the end of the defrost • Fan forcing activation in dripping phase • Fan speed set-up in dripping phase 8.1.3 Used outlets • Digital outlet of the refrigerating cycle inversion • All the digital outlets related to the compressors • All the digital/analogue outlets related to the condensation fans 8.2 Working description C PT [bar/ ºC] DefrOffTHR DefrOnTHR t [s] ∆t1 ∆t2 ∆t3 DefrAct DefrOffTHR DefrOnTHR CPT ∆t 1…3 DefrAct T Defrost end threshold Defrost start threshold Condensation pressure/temperature Pressure/temperature permanence partial time in the defrost activation zone Active defrost Time Only in heat pump mode we can have the defrost activation. <strong>Rhoss</strong> S.p.A. S.A.T. Rev. 1.0 20/01/05 28
If it’s whether or not the presence of the pressure transducer, the defrost will be done in temperature or in pressure, the temperature and pressure threshold for the enabling and disabling will be set-up. To start a defrost cycle the temperature/pressure must remain under the defrost start threshold, with compressor on, for a cumulative time same at the set-up activation delay time; If the temperature/pressure increases over the defrost end threshold that time must be reset, if the working way of the unit is changed (heat pump = > chiller), and if a feeding missing of the control electronic card occurs. The end of a defrost cycle can happen by temperature/pressure, if this last passes the threshold of the set-up defrost en d, or if the last passes the set-up time overtaking the ma ximum time. <strong>Rhoss</strong> S.p.A. S.A.T. Rev. 1.0 20/01/05 29
Page 1 and 2: Electronic board PCO-OEM twin circu
Page 3 and 4: 5.3 Control setpoint compensation 1
Page 5 and 6: 13.2.1 Digital variables 63 13.2.2
Page 7 and 8: 2 INLET OUTLET LIST Is provided the
Page 9 and 10: Heat qualification X recovery Setpo
Page 11 and 12: 4 MAIN CIRCULATION PUMP MANAGEMENT
Page 13 and 14: 4.3 Second pump management The seco
Page 15 and 16: 5 THERMOREGULATION 5.1 Summer/winte
Page 17 and 18: Positive offset OFFSETC HEAT PUMP W
Page 19 and 20: RBM S1 C1 S2 C1 S1 C2 S2 C2 STPM EI
Page 21 and 22: RBM S2 C2 S2 C1 S1 C2 S1 C1 STPM Re
Page 23 and 24: 6.3 Rotation The compressor’s and
Page 25 and 26: If the 0÷5 Volt pressure trasducto
Page 27: Among the manufacturer’s paramete
Page 31 and 32: 8.4 Compressors and dripping The st
Page 33 and 34: 9 TIME BENDS Two types of time bend
Page 35 and 36: 11 ALARMS 11.1 Reset - Visualisatio
Page 37 and 38: Code Alarm Compressor Fans OFF Pump
Page 39 and 40: Code Alarm Compressor Fans OFF Pump
Page 41 and 42: 11.5 Flow alarm management 11.5.1 U
Page 43 and 44: The overtaking of the width’s min
Page 45 and 46: If the slider is positioned in the
Page 47 and 48: PGD description Parameter descripti
Page 49 and 50: PGD description power-on time Minim
Page 57 and 58: 13 SUPERVISORY The transmission of
Page 59 and 60: Description Type Address R/W Notes
Page 61 and 62: Description Type Address R/W Notes
Page 63: 13.2.1 Digital variables Carel Nome

Manual pCoOEM Bicircuit - Rhoss

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