EXTREME HEAT SOLAR
12
100
l
NO PRESSURE EVACUATED TUBE SYSTEM
21.
Open the box that contains the vacuum tubes. Handle the tubes with care – especially the
bottom end since it contains a vacuum. If a tube is damaged, air will be forced in and the bottom
end of the tube will change to a milky colour. A faulty tube needs to be replaced.
22.
Before inserting a tube into the geyser, fill the tube with water (if a tube is installed without
water, it will be hot by the time the cold water is added, and crack). Install the black cover rubber
around the open edge of the tube and lubricate the open edge with a dishwashing liquid or
window cleaner. This will ease the task of inserting the tube into the geyser.
Picture 1.19 Fill the tube with water, install the rubber and lubricate the open end of the tube
23.
Push the open end of the tube carefully into the first hole of the geyser until the bottom of the
tube is just over the tube base section (8). Pull the tube a little bit back until the bottom is
settled firmly in the base of the frame.
Picture 1.20 Installing the vacuum tube
24.
Install the remainder of the vacuum tubes.
25.
Cut two pieces of 15mm copper piping:
approximately 14cm and 19cm. Use these
piping to connect the geyser overflow to the
reservoir using the appropriate couplers (not
supplied).
Picture 1.21 Connect the geyser overflow to the reservoir
