mCq pCO - Standard + Heat Pump - McQuay

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Conditioning: pCO Standard chiller + heat pump User Guide ver. 2.9 02/11/99SupervisorThe table below shows the variables transmitted to the supervisory pc when the pCO controlleris connected to it.VARIABLE TYPE IN/OUTStatus of the electropump Digital On displayStatus of compressor no. 1/2 Digital On displayStatus of capacity-controlled routine no. 1/2 Digital On displayStatus of the reversing cycle valve no. 1/ Digital On displayGeneral alarm Digital On displayEeprom damaged: alarm Digital On displayAlarm: clock card broken or disconnected Digital On displayAntifreeze thermostat alarm Digital On displayAlarm: electropump circuit breaker Digital On displayFlowmeter alarm Digital On displayAlarm: high pressure pressurestat circuit no. 1/2 Digital On displayAlarm: circuit breaker compressor no. 1/2 Digital On displayAlarm: circuit breaker fan no. 1/2 Digital On displayAlarm: oil differential pressurestat compressor no. 1/2 Digital On displaySummer functioning mode Digital On displayWinter functioning mode Digital On displaySimultaneous defrostings Digital SelectableInterlock alarm Digital On displayAlarm: low pressure pressurestat circuit no. 1/2 Digital On displayAlarm: high pressure circuit no. 1/2 Digital On displayAlarm: exceeded low temperature threshold at evaporator outlet Digital On displayAlarm: exceeded high temperature threshold at evaporator inlet Digital On displayAlarm: exceeded low temperature threshold at evaporator inlet Digital On displayAlarm: request for maintenance compressor no. 1/2 Digital On displayStatus of the unit (on/off) Digital SelectableStatus of fans circuit no. 1/2 Digital On displayAlarm: inlet water temperature probe damaged Digital On displayAlarm: temperature probe circuit no. 1/2 damaged Digital On displayAlarm: external air temperature probe damaged Digital On displayAutostart (after a black-out) Digital SelectableCompressors shift Digital SelectableCapacity-controlled routines Digital On displayClock card Digital SelectableWeekly on/off time-zones Digital SelectableDaily on/off time-zones Digital SelectableDaily time-zones with set-point variation Digital SelectableAlarm: outlet water temperature probe damaged Digital On displayAlarm: pressure probe circuit no. 1/2 damaged Digital On displayControl probe Digital On displayType of control action Digital SelectableCompressors off routine during defrosting Digital SelectableCompressors off only at defrosting start-up Digital SelectablePumpdown Digital SelectableFans Digital SelectablePag.36/61
Conditioning: pCO Standard chiller + heat pump User Guide ver. 2.9 02/11/99VARIABLE TYPE IN/OUTAlarm: general maintenance required Digital On displayWater temperature at evaporator outlet Analogue On displayWater temperature at evaporator inlet Analogue On displayPressure circuit no. 1/2 Analogue On displaySummer water temperature set-point Analogue SelectableSummer temperature zone Analogue SelectableWinter water temperature set-point Analogue SelectableWinter temperature zone Analogue SelectableHigh pressure threshold Analogue SelectableAntifreeze threshold Analogue SelectableSummer high temperature threshold at evaporator inlet Analogue SelectableSummer low water temperature threshold at evaporator inlet Analogue SelectableWinter high temperature threshold at evaporator inlet Analogue SelectableWinter low water temperature threshold at evaporator inlet Analogue SelectableStart-defrosting set-point Analogue SelectableEnd-defrosting set-point Analogue SelectableCoil temperature circuit no. 1/2 Analogue On displayExternal air temperature Analogue On displayWater temperature set-point of 1st Winter time-zone Analogue SelectableWater temperature set-point of 2nd Winter time-zone Analogue SelectableWater temperature set-point of 3rd Winter time-zone Analogue SelectableWater temperature set-point of 4th Winter time-zone Analogue SelectableWater temperature set-point of 1st Summer time-zone Analogue SelectableWater temperature set-point of 2nd Summer time-zone Analogue SelectableWater temperature set-point of 3rd Summer time-zone Analogue SelectableWater temperature set-point of 4th Summer time-zone Analogue SelectableWater temperature set-point Analogue On displayInverter output Analogue On displayDead-zone differential around the set-point Analogue SelectableFans starting point Analogue SelectableFans stopping point Analogue SelectableInverter set-point Analogue SelectableInverter differential Analogue SelectableWorking hours compressor no. 1/2 Integer On displayTime-delay before oil differential alarm Integer On displayTime-delay before inlet water high temperature alarm Integer SelectableMax. defrosting time Integer SelectableDefrosting starting time Integer SelectableTime-delay before interlock alarm Integer SelectableTime-delay before low pressure pressurestat alarm Integer SelectableTime-delay before flowmeter alarm during normal functioning Integer SelectableTime-delay before flowmeter alarm at start-up Integer SelectableNumber of compressors Integer On displayCompressors threshold (hours) Integer SelectableCurrent hour Integer On displayCurrent minutes Integer On displayChange current hour Integer SelectableChange current minutes Integer SelectableCurrent day Integer On displayCurrent month Integer On displayChange current day Integer SelectablePag.37/61
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mCq pCO - Standard + Heat Pump - McQuay

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