Question-and-Answer Resource for the Building Energy Modeling Community
Get s tarted with the Help page

# Revision history [back]

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage and and Water Heater Use Side Inlet Temperature is unchanged). With prior models, I successfully used the Set Site Water Mains Temperature measure but that is not working here. I noticed that my prior .osm file had a Site:WaterMainsTemperature object, but my current model does not. Should I attempt to add that object my new .osm file via a text editor? Any other ideas?

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage and and Water Heater Use Side Inlet Temperature is unchanged). With prior models, I successfully used the Set Site Water Mains Temperature measure but that is not working here. I noticed that my prior .osm file had a Site:WaterMainsTemperature object, but my current model does not. Should I attempt to add that object my new .osm file via a text editor? Any other ideas?ideas? Please see my OpenStudio 2.4.0 screenshots below.

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage and and Water Heater Use Side Inlet Temperature is unchanged). With prior models, I successfully used the Set Site Water Mains Temperature measure but that is not working here. I noticed that my prior .osm file had a Site:WaterMainsTemperature object, but my current model does not. Should I attempt to add that object my new .osm file via a text editor? Any other ideas? Please see my OpenStudio 2.4.0 screenshots below.

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage and and Water Heater Use Side Inlet Temperature is unchanged). With prior models, I successfully used the Set Site Water Mains Temperature measure but that is not working here. I noticed that my prior .osmosm file had a Site:WaterMainsTemperature object, but my current model does not. Should I attempt to add that object my new .osmosm file via a text editor? Any other ideas? Please see my OpenStudio 2.4.0 screenshots below.

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage and Water Heater Use Side Inlet Temperature is unchanged). With prior models, I successfully used the Set Site Water Mains Temperature measure but that is not working here. I noticed that my prior osm file had a Site:WaterMainsTemperature object, but my current model does not. Should I attempt to add that object my new osm file via a text editor? Any other ideas? I also noticed in DView that Water Heater Use Side Inlet Temperature is wrong, but don't know why. Please see my OpenStudio 2.4.0 screenshots below.

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage is unchanged). With prior models, I successfully used the Set Site Water Mains Temperature measure but that is not working here. I noticed that my prior osm file had a Site:WaterMainsTemperature object, but my current model does not. Should I attempt to add that object my new osm file via a text editor? I also noticed in DView that Water Heater Use Side Inlet Temperature is wrong, but don't know why. Please see my OpenStudio 2.4.0 screenshots below.

Update: I experimented with my model, but still got water temperatures that don't make sense. Here is what I tried (and which is not shown in the screenshots):

1. Removed the Set Site Water Mains Temperature measure.
2. Copied the osm file with a new name so as to ignore the associated file folder in hopes of removing unknown issues.
3. Removed the bypass pipes.
4. Changed the pump power to something very low (1 W). Plotted Pump Fluid Heat Gain Rate which is low as desired and expected.
5. Plotted the Water Use Connections Cold Water Water Temperature, which shows the proper default temperature of 50 F. However, Water Heater Use Side Inlet Temperature is 135 F which doesn't make sense.

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage is unchanged). With prior models, I successfully used the Set Site Water Mains Temperature measure but that is not working here. I noticed that my prior osm file had a Site:WaterMainsTemperature object, but my current model does not. Should I attempt to add that object my new osm file via a text editor? I also noticed in DView that Water Heater Use Side Inlet Temperature is wrong, but don't know why. Please see my OpenStudio 2.4.0 screenshots below. screenshots.

Update: I experimented with my model, but still got water temperatures that don't make sense. Here is what I tried (and which is not shown in the screenshots):

1. Removed the Set Site Water Mains Temperature measure.
2. Copied the osm file with a new name so as to ignore the associated file folder in hopes of removing unknown issues.
3. Removed the bypass pipes.
4. Changed the pump power to something very low (1 W). Plotted Pump Fluid Heat Gain Rate which is low as desired and expected.
5. Plotted the Water Use Connections Cold Water Water Temperature, which shows the proper default temperature of 50 F. However, Water Heater Use Side Inlet Temperature is 135 F which doesn't make sense.

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage is unchanged). With prior models, I successfully used the Set Site Water Mains Temperature measure but that is not working here. I noticed that my prior osm file had a Site:WaterMainsTemperature object, but my current model does not. Should I attempt to add that object my new osm file via a text editor? I also noticed in DView that Water Heater Use Side Inlet Temperature is wrong, but don't know why. Please see my OpenStudio 2.4.0 screenshots.

Update: I experimented with my model, but still got water temperatures that don't make sense. Here is what I tried (and which is not shown in the screenshots):

1. Removed the Set Site Water Mains Temperature measure.
2. Copied the osm file with a new name so as to ignore the associated file folder in hopes of removing unknown issues.
3. Removed the bypass pipes.
4. Changed the pump power to something very low (1 W). Plotted Pump Fluid Heat Gain Rate which is low as desired and expected.
5. Plotted the Water Use Connections Cold Water Water Temperature, which shows the proper default temperature of 50 F. However, Water Heater Use Side Inlet Temperature is 135 F which doesn't make sense.

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage is unchanged). With prior models, I successfully used the Set Site Water Mains Temperature measure but that is not working here. I noticed that my prior osm file had a Site:WaterMainsTemperature object, but my current model does not. Should I attempt to add that object my new osm file via a text editor? I also noticed I see in DView that Water Heater Use Side Inlet Temperature is wrong, wrong (i.e. the temperature spikes over the year), but don't know why. Please see my OpenStudio 2.4.0 screenshots.

Update: I experimented with my model, but still got water temperatures that don't make sense. Here is what I tried (and which is not shown in the screenshots):

1. Removed the Set Site Water Mains Temperature measure.
2. Copied the osm file with a new name so as to ignore the associated file folder in hopes of removing unknown issues.
3. Removed the bypass pipes.pipe.
4. Changed the pump power to something very low (1 W). Plotted Pump Fluid Heat Gain Rate which is low as desired and expected.
5. Plotted the Water Use Connections Cold Water Temperature, which shows the proper default temperature of 50 F. However, Water Heater Use Side Inlet Temperature is 135 F which doesn't make sense.

 10 retagged __AmirRoth__ 4388 ●5 ●16 http://bleedinggreenna...

### Setting Cold Water Temperature

I'm trying to set Site:WaterMainsTemperature within OpenStudio, but nothing I do is impacting the results (e.g. water heater energy usage is unchanged). I see in DView that Water Heater Use Side Inlet Temperature is wrong (i.e. the temperature spikes over the year), but don't know why. Please see my OpenStudio 2.4.0 screenshots.

Update: I experimented with my model, but still got water temperatures that don't make sense. Here is what I tried (and which is not shown in the screenshots):

1. Removed the Set Site Water Mains Temperature measure.
2. Copied the osm file with a new name so as to ignore the associated file folder in hopes of removing unknown issues.
3. Removed the bypass pipe.
4. Changed the pump power to something very low (1 W). Plotted Pump Fluid Heat Gain Rate which is low as desired and expected.
5. Plotted the Water Use Connections Cold Water Temperature, which shows the proper default temperature of 50 F. However, Water Heater Use Side Inlet Temperature is 135 F which doesn't make sense.