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How to install the vacuum tube solar heater with detailed steps


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How to install the vacuum tube solar heater with detailed steps
How to install the vacuum tube solar heater with detailed steps

The vacuum tube solar heater is characterized by its ability to retain hot heat for more than 72 hours!

Solar heaters are an excellent option for heating domestic water without any additional costs on electricity or gas bills, as the water is heated by direct sunlight to be used in the home later. There are two types of solar heaters, the traditional type that uses mirrors to capture sunlight, and the newer type, which uses vacuum tubes (Evacuated Tube Collectors). In this article, we will learn how to properly install the vacuum tube solar heater.

Types of vacuum tube solar heaters

Evacuated tube solar heaters are divided into two types (in terms of water pressure entering the heater):

How to install the vacuum tube solar heater with detailed steps
The glass tube with a copper tube inside

1 - Non-pressurized system:

 in which cold water enters the heater tank and from it to the pipes in a smooth manner, meaning that the cold water source (the tank of the main house) is higher than the level of the solar heater tank.

2 - Pressurized system:

 in which water enters the heater tank and from it to the pipes by means of a water pump, due to the presence of the water source (the tank) at the same level or less than the solar heater.

The tubes are also divided into:

1 - Vacuum double glass tubes:

 They are two glass tubes inside each other, insulated between them, so that cold water enters the inner tube, heated by direct sunlight, and then rises to the tank. This type is suitable for uncompressed systems.

2 - Glass tubes containing copper tubes:

 It is a copper tube inside another glass, which is isolated from water, so that this copper tube is heated by sunlight, which in turn heats the water in the tank, without the need for cold water to enter the tubes. These tubes are suitable for pressurized systems.

Vacuum tube solar heater parts

The vacuum tube solar heater consists of the following:

How to install the vacuum tube solar heater with detailed steps
Vacuum tube solar heater

Evacuated tube solar heater, in which all its parts are shown.

1 - Water tank:

 It is responsible for collecting hot water in the pressurized heater.

2 - Vacuum tubes:

 They are responsible for heating the water by capturing direct sunlight, and maintaining the temperature of the hot water.

3 - Heater bracket:

 It is the part that carries the heater, the vacuum tubes, and the tank. It also contains a reflector at the back of the tubes to raise the heating efficiency.

4 -The auxiliary feeding tank:

 to reduce the pressure of the incoming water, and to compensate for the shortage if it is found at the source, which is optional.

5 - Ventilation tube

 to expel the air inside the tank.

6 - Heater (heating element)

 which is electric, and helps to heat the water in the tank in case the water is not hot enough.

7 - Temperature sensor

 to control the heating element.

8 - Magnesium column

 to protect against oxidation and calcification inside the heater parts.

9 - Safety valve

 and it is installed in pressurized systems on the incoming cold line, to remove excess pressure, with a non-return feature.

10 - Automatic aerator

 and is installed with pressurized systems to remove air in the tank.

How to install the vacuum tube solar heater

This part explains how to install the vacuum tube solar heater (non-pressurized system).

Necessary tools and materials

1 - Vacuum tube solar heater (complete unit sold complete with all parts).

2 - 10mm and 13mm slot wrench.

3 - 10 inch and 12 inch pipe wrench.

 4 -Teflon tape.

5 - Measuring tape (meter).

6 - water balance

7 - Hammer.

8 - Electric drill (drill).

9 -Water and liquid soap (for lubrication).

10 - wide bowl.

11 - Valve (stop) number 2.

Preparing the heater holder

There must be a suitable space for installing the solar heater, in terms of the appropriate space, and an open place that is not covered (not in the shade), and as close as possible to the cold water tank. And the possibility of directing to the south at an angle of 45 degrees.

1 - First of all, the holder of the solar heater must be installed in the south direction, so the south must be determined using a compass (the compass on smartphones can be used).

2 - Assemble the carrier parts according to the steps described in the user manual attached to the heater you purchased.

3 - Make sure to adjust the angle of the suspender to be 45 degrees, you will find that you can adjust it through several screws to fix the angle on the parts of the carrier.

4 - After determining the location, secure the carrier to the ground using the anchor bolts. You will need a power drill, and use the appropriate sharpeners.

Heater parts installation

1 - After that, install the tank on its base, according to the installation guide for the heater, in order to know where to install the screws, and the special base of the tank.

2 - Then, prepare the vacuum tubes by installing the rubber ring in each tube (according to the installation manual).

3 - Before installing the tubes in place, lubricate the end of the tubes to facilitate installation.

4 - To install the tubes in place, put the end of the tubes on the tank side first, gently screwing them into the slot.

5 - Then, the other end of the tubes, which has cup-like clamping pieces, is gently held in place at the base.

6 - Pull the rubber ring up until it sticks to the end of the tube from the top tank side.

7 - Install the rest of the tubes in the same way.

Other heater extensions

1 - If you are using a pressurized system, you need to install the auxiliary tank, in the special slot in the collection tank.

2 - Install the vent tube and aerator at the top of the tank.

3 - Extend the cold water feeding tube, from the main house tank, directly to the solar heater. Place a valve before the heater to control the incoming water.

4 - If the level of the main tank is equal to or less than the level of the solar heater tank, you need to add a water pump to supply cold water to the auxiliary tank of the solar heater tank (pressurized system).

5 - Extend the hot water pipe, from the heater to the hot water distribution cabinet in the house. Place a stopcock after the heater to control the outflow of water.

6 - Make sure that you insulate the hot pipes connecting to parts of the house, using good insulation (such as rock wool or appropriate foam), in order to reduce heat losses.

7 - Install the rest of the components attached to the tank, such as the heating element (heater), and the magnesium shaft.