Why is the Outdoor Low Temperature (ODL) not changing after I've amended it?

Changing the Outdoor Design Temperature (ODT) does not affect the Outdoor Low Temperature (ODL) used in the performance task. This task is based on MCS 031, which states the the ODL from Appendix A must be used. MCS 031 Appendix A is equivalent to the 99.6th percentile from MIS 3005 D. 

The ODL is not the same as the ODT used for the design, which you may adjust within MCS rules stated in MIS 3005 D. Read here for info on how Heatpunk sets the ODT.