October 2013
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8.
Now turn on the water heater with all
fans continuing to run. In this case,
the water heater immediately begins
to spill into the house due to the
downdraft in the vent (note the
positive vent pressure). The water
heater continues to spill for about 90
seconds at which time the venting
system finally warms up, suddenly
reverses and begins to operate
properly. Once the venting system
overcomes the downdraft, the water
heater draft is a strong –4 Pa.
9.
Stop data recording using the
Recording….Stop Recording
menu item.
Although this testing can certainly be done without TECLOG3, using TECLOG3 gives you better
documentation of what you found, more definitive measurement of the pressure changes and a
more professional way of reporting the results to your client.
Other Hints
If you are using the TEC WiFi Link to wirelessly communicate with you laptop, try using our
mobile iTEC-700 app instead of the laptop to monitor changes in pressures real-time while
walking around the house with your mobile device, turning fans on and off.
When using TECLOG3, create a configuration file which stores all of the channel and
configuration settings needed to do your testing. Then simply load the configuration file
using the
File….Load Configuration
menu item and you are ready to go.
Use a notebook to jot down the times at which you turned on or off the exhaust devices and
air handler. Make sure to synchronize your computer clock with your watch before starting.
These “events” can then be added to your test file by using the TECLOG3
Event Marker
tool (as shown in the graphs above).
Use the
Region Select Tool
to quickly determine the average pressure reading for any
selected portion of the graph.
Example Test File
The example test file illustrated above has been installed on your computer along with the
TECLOG3 program. The file (named
cstest.TeclogData
) is copied to the TECLOG installation
folder. Test files can be loaded into TECLOG3 using the
File….Load Data File
menu item.
