Vacuum Tube Solar Installation
In this guide, you can find all the information required for the correct installation of the system. We recommend that the installation be done by a professional plumber or someone experienced.
📋 Installation Steps
What's in Your Box?
A vacuum tube solar energy system consists of the following parts. Check that all parts are complete before starting the installation.
Vacuum Tubes
Glass tubes that absorb sunlight and convert it into heat.
- Borosilicate glass (break-resistant)
- 93% heat absorption
- 18 / 24 / 30 pieces (depends on model)
Hot Water Tank
Insulated tank where heated water is stored.
- 150L / 200L / 250L capacity
- Stainless steel inner surface
- Polyurethane insulation
Frame / Stand
Metal skeleton that fixes the system to the roof.
- Galvanized steel
- Adjustable angle
- Wind resistant
Connection Elements
Water connections and installation materials.
- Gaskets and fittings
- Connection pipes
- Mounting screws
Cold Water Feed (Header) Tank
Mini Tank (10-20 Liters)
It is a small tank mounted on top of the hot water tank. Mains water enters this mini tank first. When hot water is consumed, the tank level drops and the float opens to automatically refill from the mains.
How It Works?
- 1 Tank level drops when hot water is used
- 2 Float goes down and the valve opens
- 3 Cold water fills automatically from the mains
- 4 Float closes the valve when the level rises
Advantages
- Automatic water level control
- No electricity required
- Provides pressure balancing
- Prevents tubes from running dry
Connection Diagram
It is important that the water connections are made according to the diagram for the system to work correctly.
Mains water or
float-controlled mini tank
VACUUM TUBES (Facing the sun)
To home plumbing
hot water line
Thermosiphon Principle
Hot water becomes lighter and rises, cold water becomes heavier and sinks. This means no pump required!
Pro Tip
Prevent leaks by using teflon tape or hemp on the connections.
Step by Step Installation
Follow each step in order. Take your time, safety comes first.
Location Selection
Determine the installation site. Correct location selection directly affects efficiency.
Frame Assembly and Angle Adjustment
Secure the metal stands firmly to the roof. Correct angle calculation is important.
📐 Angle Calculation Formula
Tank Placement
Place the hot water tank onto the frame and make the water connections.
Installing Vacuum Tubes (CAREFUL!)
The most delicate step! Since the tubes are glass, you must be careful.
- a Prepare lubricant: Make a mixture of dish soap + water
- b Apply to gasket edge: Wet the part of the tube that enters the tank slot
- c Insert slowly: Fit the tube into the slot by rotating and pushing gently
- d Do not squeeze: The tube should stay centered, not touching the edges
Filling Water (DO THIS FIRST!)
Connect the mains water and fill the tank.
⚠️ CRITICAL WARNING
Always fill the water BEFORE exposing the tubes to the sun! Empty tubes can explode due to thermal shock.
Test and Control
Perform final checks and activate the system.
Things to Consider
Take these warnings seriously. Incorrect installation is not covered under warranty.
Dry Running
Do not expose tubes to the sun without filling water. Due to overheating, glass may explode and your warranty will be void.
Impact and Dropping
Vacuum tubes are glass. They break if dropped, hit, or bent. Be very careful when removing from the box and installing.
Incorrect Angle
Incorrect angle can reduce your efficiency by 30-40%. Calculate according to the formula or seek expert help.
Frost Protection
Our system does not freeze up to -25°C. However, ensure that the connection pipes are insulated.
Frequently Asked Questions
Can I do the installation myself?
You can if you have basic plumbing knowledge. However, as you will be working on the roof, do not neglect safety measures. If you are not sure, seek professional help.
How long does the installation take?
Average 2-3 hours is enough for 2 experienced people. If you are doing it for the first time, it may take 4-5 hours.
Which tools are required?
Basic tools are enough: Socket wrench set, pliers, screwdriver, drill (for roof fixing), spirit level, teflon tape.
Can a broken tube be replaced?
Yes, each tube is independent. You can remove the broken tube and install a new one. Contact us for spare parts.
Does the system use electricity?
No! It works with the thermosiphon principle - it does not require a pump. It is a completely passive system, not affected by power outages.
Need Help with Installation?
Contact our technical team for your questions. Let us help you step by step.