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I am experiencing a strange issue with a water cooled VRF unit. Initially I simply added a condensor loop to the VRF system. However I discovered that there were a great deal of unmet hours when I did so. Please see the html summary and IDF file VRF water cooled.

The only solution I could find to met these unmet hours was to force the water condensor volume flowrate to be 10 gallons per minute by setting this in the VRF outdoor unit data. Please see the html summary and IDF file VRF water cooled 10 gallons per minute condensor loop.

The dropbox link to the file containing the folder can be seen here.

As a result however the condensor loop has zero flow rate as well as the cooling tower. (Please see the jpg). Would you be able to explain what is going on here? What am I missing?

Any insights/help would be most appreciated thanks! The folder containing all the files can be seen

I am experiencing a strange issue with a water cooled VRF unit. Initially I simply added a condensor loop to the VRF system. However I discovered that there were a great deal of unmet hours when I did so. Please see the html summary and IDF file VRF water cooled.

The only solution I could find to met these unmet hours was to force the water condensor volume flowrate to be 10 gallons per minute by setting this in the VRF outdoor unit data. Please see the html summary and IDF file VRF water cooled 10 gallons per minute condensor loop.

The dropbox link to the file containing the folder can be seen here.

As a result however the condensor loop has zero flow rate as well as the cooling tower. (Please see the jpg). Would you be able to explain what is going on here? What am I missing?

Any insights/help would be most appreciated thanks! The folder containing all the files can be seen thanks!

I am experiencing a strange issue with a water cooled VRF unit. Initially After successfully modelling a air cooled system I simply added a condensor loop to the VRF system. system (This was done in DesignBuilder). However I discovered that there were a great deal of unmet hours when I did so. This was not the case with the air cooled unit as all the hours were being met. Please see the html summary and IDF file VRF water cooled.

The only solution I could find to met these unmet hours was to force the water condensor volume flowrate to be Water Condensor Volume Flow Rate to a flow rate of 10 gallons per a minute by setting this (6.3 litres/s) in the VRF outdoor unit data. AirConditioner:VariableRefrigerantFlow object . Please see the html summary and IDF file VRF water cooled 10 gallons per minute condensor loop.

The dropbox link to the file containing the folder can be seen here

After forcing this flow rate all the setpoint hours were then met. However as a result the condensor loop and cooling tower both have a flow rate of zero. It's as if the system is working but isn't working at the same time as now the setpoints are being met but the condensor loop has a flow rate of zero.

.

As a result however the condensor loop has zero flow rate as well as the cooling tower. (Please see the jpg). Would you anyone be able to explain what is going on here? What am I missing?

Any insights/help would be most appreciated thanks!

I am experiencing a strange issue with a water cooled VRF unit. After successfully modelling a air cooled system I simply added a condensor loop to the VRF system (This was done in DesignBuilder). However I discovered that there were a great deal of unmet hours when I did so. This was not the case with the air cooled unit as all the hours were being met. Please see the html summary and IDF file VRF water cooled.

The only solution I could find to met these unmet hours was to force the Water Condensor Volume Flow Rate to a flow rate of 10 gallons a minute (6.3 litres/s) in the AirConditioner:VariableRefrigerantFlow object . Please see the html summary and IDF file VRF water cooled 10 gallons per minute condensor loop.

The dropbox link to the file containing the folder can be seen here

After forcing this flow rate all the setpoint hours were then met. However as a result the condensor loop and cooling tower both have a flow rate of zero. It's as if the system is working but isn't working at the same time as now the setpoints are being met but the condensor loop has a flow rate of zero.

.

Would anyone be able to explain what is going on here? What am I missing?

Any insights/help would be most appreciated thanks!

I am experiencing a strange issue with a water cooled VRF unit. After successfully modelling a air cooled system I simply added a condensor loop to the VRF system (This was done in DesignBuilder). However I discovered that there were a great deal of unmet hours when I did so. This was not the case with the air cooled unit as all the hours were being met. Please see the html summary and IDF file VRF water cooled.

The only solution I could find to met these unmet hours was to force the Water Condensor Volume Flow Rate to a flow rate of 10 gallons a minute (6.3 litres/s) in the AirConditioner:VariableRefrigerantFlow object . Please see the html summary and IDF file VRF water cooled 10 gallons per minute condensor loop.

The dropbox link to the file containing the folder can be seen here

After forcing this flow rate all the setpoint hours were then met. However as a result the condensor loop and cooling tower both have a flow rate of zero. It's as if the system is working but isn't working at the same time as now the setpoints are being met but the condensor loop has a flow rate of zero.

.

Would anyone be able to explain what is going on here? What am I missing?

Any insights/help would be most appreciated thanks!

I am experiencing a strange issue with a water cooled VRF unit. After successfully modelling a air cooled system I simply added a condensor loop to the VRF system (This was done in DesignBuilder). However I discovered that there were a great deal of unmet hours when I did so. This was not the case with the air cooled unit as all the hours were being met. Please see the html summary and IDF file VRF water cooled.

The only solution I could find to met these unmet hours was to force the Water Condensor Volume Flow Rate to a flow rate of 10 gallons a minute (6.3 litres/s) in the AirConditioner:VariableRefrigerantFlow object . Please see the html summary and IDF file VRF water cooled 10 gallons per minute condensor loop.

The dropbox link to the file containing the folder can be seen here

After forcing this flow rate all the setpoint hours were then met. However as a result the condensor loop and cooling tower both have a flow rate of zero. It's as if the system is working but isn't working at the same time as now the setpoints are being met but the condensor loop has a flow rate of zero.

Would anyone be able to explain what is going on here? What am I missing?

Any insights/help would be most appreciated thanks!