[header] How to heat make up water for a boiler system using solar energy [title] Obtain the necessary materials. [step] These are listed below under " things you'll need " but a few of the items will be explained in more detail here. [title] Purchase a solar pathfinder. 
[step] A solar pathfinder is needed to measure the estimated amount of sun that will hit the point for the collectors. Directions to how to use this device is located in the instruction manual provided with the device.