Welcome to lesson two where we talk about Secondary Heat Sources
VIDEO PRESENTATION:
Please watch the 12:22-minute presentation.
The video must be fully watched before moving on to the next step.
Once you have watched the entire video, mark this topic as complete and proceed to the next lesson.
Video instructions:
This video must be watched in one complete session; please ensure you have allocated enough time to watch. You can pause the video for a short break at any time. The video must be watched on this lesson page without clicking away. The video can be made full screen by pressing the ” F ” key on your keyboard. Press Esc on the keyboard to return to normal view and complete the lesson.
