The angle at which you mount the collector should roughly correspond to the latitude of your location. For example:

- Melbourne, Australia has a latitude of 37^o South - the collector should therefore face north at a 37^o angle.
- London, UK has a latitude of 51^o North - the collector should therefore face south at a 51^o angle.

      You do not have to be too careful about mounting the collector at the exact angle suggested. If your roof angle is within 10^o+/- of your desired angle you can just mount the solar collector flush against the roof surface. The added trouble of adjusting the collector to a precise angle is not warranted as it will not result in a great improvement in efficiency.

     If you are using the solar collector for space heating as well as hot water production, or if you just want a larger solar contribution, you will need a system that will greatly surpass heat requirements in the summer. Generally in the summer heating will not be required, in contrast cooling is. Unfortunately, at present solar cooling for domestic applications is not yet economically viable, so what to do with the additional heat? If you have a swimming pool or spa, the excess heat can be used to supplement heating. Turning off the pump and letting the collector stagnate is not ideal as high pressure and temps, and large volumes of vented steam may result (wasted water).

     If you do not have an additional means of using the excess heat, then adjusting the angle of the collector can help to reduce summer heat output. As can be seen by the diagram above, the sun is low in the sky during the winter and high in the summer. Solar smart house designs will take advantage of this by having big North or South (depending on your location) facing windows allowing maximum absorption of winter sun, with large eves or veranda to block out the summer sun.

     By increasing the vertical angle of the collector by about 20^o more the location's latitude (ie. 60^o instead of 40^o), greater winter performance will be experienced. This is because the collector is "facing" the sun (perpendicular - longitudinal angle). Due to the higher location of the sun in the sky during the summer, the collector will be around 40^o from perpendicular and as such heat output will be reduced as the collector is not fully "facing" the sun. This simple solution alone can reduce peak summer output considerably, thus reducing problems associated with excessive summer heat production.

Assembly Manual

Solar water heaters consist of glass vacuum tube, water tank, frame and reflector. They are packed into four cartons.
1) one step ---- unpack the carton of frame
The frame and all fastenings are contained in a long thin carton. Please unpack this carton with cares and lay out the parts. Please collect all the nuts, in fear losing one or some. Lay all the U section stainless steel arms on the floor in order of size
2) Tow step ---- assemble reflector
Please unpack the slim square carton. The two or four panels are the reflectors which bolt to the two or three long U section legs. Bolt the reflector panels are evenly in line across the structure.
Fit the three swivel feet to the lower end of the three legs.
Attach the three cradle frames to the top of the three legs. Note there is a left and right side fit.
Select the three rear legs and fit the swivel feet to each.
The three rear legs can now be attached to the cradles and the transverse braces fitted using the triangular and tee bracing plates.
The diagonal bracing arms can now be fitted.
Below the reflector panels on the front of the front legs fit the tube carriage and insert the plastic caps in the holes provided.
Ensure all bolts are tight and the frame is rigid.
3) three step ---- assemble water cylinder (water tank)
You are now ready to secure the frame in position, if attaching directly to the ground now lower the hot water cylinder on to the cradle at the top of the frame, ensure the bolts from the cylinder are through the slots on the cradle and fit the nuts finger tight . Using a string or straight edge check the alignment of the tube carriage guides and tube locating holes in the cylinders. Gently turn the cylinder to achieve alignment if the holes are not aligned the unit may leak or tubes may break when being fitted. Once the cylinder is aligned tighten the bolts to lock it in place and recheck alignment.
Using a clean rag and a small amount of silicone grease clean and lubricate each of the white silicone seal inside the 30 tube location holes on the cylinder.

Note: before assembly, please check the water cylinder and there is other things or not inside it , if yes, please take it out and clean it with water.

4) four step ----- assemble vacuum tubes
carefully unpack the vacuum tube; remember this is glass, unlike the rest of assembly this will break unless handled carefully. Fit a black rubber dust seal to the tubes from the open end with the rounded side facing down. Slide this 200mm down the tube.
Apply a smear of grease to the top 100mm of the open end of the first vacuum glass tube. Using a gentle pressure and twisting motion insert the greased tube into the locating hole until it is well inside the water tank and the bottom end of the tube is at least 25mm clear of the tube carriage guides. Now using a gentle downward pressure and twisting motion lower the tube until it fits snugly into the carriage guide.
Slide the black rubber dust seal up the tube until it’s outside edge fits flush with the cylinder.
Repeat for the rest of the tubes.