The design CFM is automatically filled in based on design
Right-B is designed to make it easy to use your duct system design CFM as the basis for data collection and to produce the final report for documentation.
► Design Ducts in Right-Suite Universal
► Go to the Right-B Worksheet (shown above)
► Here you will see all the registers and the design CFM for each register
► [After the air handler is set up] measure the actual CFM at each supply register, and enter under "Measured CFM"
► Once all registers are measured, the program computes the ratio of actual to design CFM and then suggests the order and the amount to adjust each register
► Adjust the dampers with the highest actual to design ratio
→ Adjust ratio to about 90% (standard choice) of the design CFM and then on the second highest register you adjust to 92% of design CFM and so on, adjusting each register by 2%, until you’ve adjusted all of the five highest ratio registers
► Right-B does the calculations and suggests which registers to adjust, and the target CFM
► Once completed, the excess air from the highest ratio registers has been re-distributed into the lower ratio registers, and you can re-measure and repeat
► The program indicates which registers are within their allowable tolerance:
→ Black = Measured CFM is within the tolerance
→ Red = Measured CFM is above the tolerance
→ Blue = Measured CFM is below the tolerance