mCq pCO - Standard + Heat Pump - McQuay

Conditioning: pCO Standard chiller + heat pump User Guide ver. 2.9 02/11/99AL_5Oil DifferentialPressure SwitchCircuit 1The oil differential off-normal condition in the 1st circuit forces compressor no. 1 to stop.AL_6Oil DifferentialPressure SwitchCircuit 2The oil differential off-normal condition in the 2nd circuit forces compressor no. 2 to stop.AL_7Flow Switch AlarmThe flowmeter alarm forces the unit into the off status.AL_8Anti-freeze AlarmThe antifreeze alarm (digital input or water temperature at evaporator outlet lower than theselected antifreeze threshold) forces the off status of all connected devices except theelectropump.The alarm condition will disappear as soon as the temperature rises and reaches a value higherthan the antifreeze point + differential (proportional logic, Summer functioning mode).AL_11Evaporator InletWater High Temper.ThresholdExceeded AlarmThe value measured by the water temperature probe at evaporator inlet exceeds the hightemperature threshold previously set.AL_12Evaporator InletWater Low Temper.ThresholdExceeded AlarmPag.55/61