Installation Specifications for Solar Energy in Multi-story Residential Buildings

The installation standards for solar energy in multi-story residential buildings cover multiple aspects. The following are some key points of the installation standards:

Preparations before installation

House condition inspection: Before installation, a comprehensive inspection of the roof condition is required, including the roof orientation, area, and lighting conditions, etc. Solar water heaters should be placed at a position 10° to 15° west of due south to fully absorb sunlight and extend the radiation time for converting it into heat energy. At the same time, it is necessary to ensure that the roof area is sufficient and there are no trees or other obstructions that affect the light reception of the solar panels.

Tool and accessory preparation: Prepare the tools needed for installation, such as screwdrivers, electric drills, wrenches, etc., as well as the accessories required for solar equipment, such as water tanks, brackets, vacuum tubes, etc. And inspect the water tank, brackets, vacuum tubes and each accessory for any defects to ensure that all installation materials are fully prepared.

Safety precautions: Installers must wear work clothes and name tags when on duty and are strictly prohibited from engaging in impolite behavior with users. When working on pitched roof buildings, installers must fasten safety ropes (safety belts).

Installation process

Bracket installation

The support must be firmly fixed and capable of withstanding the maximum local wind load. In addition to using cement plates to fix the iron shoes of the bracket, expansion bolt hooks can also be used to secure the bracket firmly.

The screws of the bracket should be tightened in the right direction, especially at the connection between the water tank and the bracket, which must also be tightened.

The inclination Angle of the roof support can be parallel to the roof slope, and the bottom of the collector should be horizontal (parallel) to the roof. The distance between the periphery of the roof installation area and the edge of the roof should be no less than 30cm.

Installation of water tank and vacuum tube:

When installing, first insert the connecting screws at the bottom of the water tank into the long holes of the bucket support on the bracket, and adjust the position of the connecting screws in the long holes to keep the water tank balanced with the bracket.

Insert the vacuum tubes in sequence according to the distance between the connection holes of the vacuum tubes opened on the top of the insulated water tank to ensure that there is no deviation. The vacuum tubes connected from the insulated water tank to the tailstock, tailstock and the tail end of the vacuum tubes must be tightly attached and not loose to avoid the situation of tube burst.

When installing the vacuum tubes, first install the vacuum tubes on both sides, adjust the Angle of the water tank, and then install the vacuum tube in the middle. The force should be evenly applied; do not apply force on one side, as this may cause the vacuum tube to burst.

After the vacuum tubes are installed, water can be passed through them. It is strictly forbidden to pass water first and then install the vacuum tubes. (If the intensity of the sun is too high, the vacuum tubes can be blocked first, and water can be added at night or the next morning.)

Pipeline and circuit connection:

The cutting Angle of the insulated pipe should be accurate, horizontal and vertical. The insulated pipe must be wrapped with tin foil and must not be exposed. The protective tape should be tight and flat.

The hot water pipe should be kept at a certain distance from the ground to prevent it from bending at high temperatures.

The indoor pipes and valves must be installed in accordance with the standards. There should not be too much raw material tape at the connection points of the accessories. The raw material tape should be wound smoothly without affecting the appearance. It is best to use copper valves and avoid plastic valves to prevent the broken pipe at the threaded part from being difficult to remove when it breaks.

When connecting the pipeline to the control system circuit, it is necessary to pay attention to checking whether each interface is tight and leak-proof.

Fixation and waterproofing

After all the installation is completed, the water heater must be effectively fixed with steel wire ropes. It is necessary to ensure its stability and firmness to guarantee the wind resistance of the water heater. Meanwhile, the steel wire rope must be effectively connected to the lightning protection net of the building.

It is strictly prohibited to drill holes in the floor to damage the waterproof and insulation layers of buildings and cause leakage incidents on the roof. The feet of the roof pipe threading support should be sealed and waterproof treated.

Inspection and debugging after installation

Water pressure test: After installation is completed, water pressure test should be conducted to confirm that there is no leakage.

Functional test: Test whether the water heater can produce hot water normally, check if there is any leakage at each connection point, and confirm that the control system is operating normally.

Daily maintenance: Regularly inspect the surface of photovoltaic modules for dust, leaves and other obstructions, and clean them in time to ensure the power generation efficiency of the modules. Check whether the electrical connection parts are loose or aged. If there are any problems, deal with them in time.