The hydropower reform refers to the renovation of all or part of the circuit used by the original developer according to the decoration configuration, family population, lifestyle, and aesthetic concept. Hydroelectric reform is divided into waterway reconstruction and circuit reform
>>>Links: Summary of problems with waterway reconstruction
First, the waterway transformation part of a), the material prompts according to the company quoted material selection of materials in line with national standards, construction (water supply transformation of the country is prohibited to use galvanized pipe and UPVC pipe).
b) Construction notices 1. The general water reform will not take place. The cold water and hot water outlets must be horizontal. Generally, the left heat is right and the pipelines need to be laid flat. The layout should be safe and reasonable. The location of pipe clamps, pipe slopes, etc. shall meet the requirements of the code. All types of valve installation should be correct and level, easy to use and repair.
2. The inlet valve should be equipped with an indoor main valve. Before installing, check whether the water pipe and connecting accessories are damaged, trachoma or crack.
3, the water meter installation location should be easy to read, water meters, valves from the wall to the appropriate distance, to facilitate the use and maintenance.
4. If a water softener, a water purifier, or a small kitchen treasure is to be installed in the kitchen, consideration should be given to keeping the upper and lower water positions and power supply positions in advance.
5. The cold and hot water pipes are all in the wall. When the slot is to be inspected, the depth of the slot needs to be checked. The hot and cold water pipes cannot be the same as the slot.
6. The left and right positions of the shower mixing valve are correct, and it is installed in the middle of the bathtub (the bathtub size is determined first), the height is 150-200mm in the bathtub, and the outlet of the jacuzzi is reserved according to the model. The water mixing valve hole spacing is generally maintained at (concealed) 150mm, (surface mounted) 100mm, link shower based on the height of the room and the owner's individual needs to determine the location of the outlet.
7. The water inlet of toilets should be located where they can be blocked by the toilet. One-piece toilets should be based on the model to determine the location of the outlet, generally left in the center of the toilet outlet 200 mm left.
8, electric water heaters generally need to be fixed on the load-bearing wall, if the situation is special, fixed on the non-load-bearing wall to be fixed bracket, and the top layer should have enough position to do fixed bracket, need to communicate with the water heater manufacturers in advance to determine the water heater outlet s position.
9, when installing the water heater inlet and outlet, the inlet valve and inlet valve must be considered and should be installed in the appropriate location.
10. When installing kitchen and sanitary pipes, the size of the pipe on the wall should take into account the final size of the wall tile after it is attached, ie, the thickness of the wall tile is taken into consideration in advance.
11, the design of the water pipe should be taken into account with the faucet installation location of the washing machine, the layout of the water. At the same time pay attention to the location of the power outlet is appropriate. Put the drum washing machine in the kitchen cabinet to determine the size of the washing machine and the kitchen cabinet, so as to keep the position of the water.
12. In the wall and under the ground, use as few or no connection fittings as possible to reduce the potential for leakage. The connection fittings must be installed securely and without leakage.
13. The height of the water supply outlet (elbow) on the wall should be appropriate. It is necessary to facilitate maintenance, and to minimize the exposure of the hose as much as possible, without additional hose, giving a simple, beautiful visual . For the sanitary ware such as a pedestal basin that does not have a cabinet underneath, the height of the reserved mouth is generally about 500-600 mm on the ground. The sluice basin outlet should be set in the center of the bottom of the column or behind the column, as far as possible with the column to block. Wall-mounted washbasins (without columns, no cabinets) must be provided with drainage pipes (that is, drain pipes into the wall) in a horizontal manner from the elbows at the wall.
14, after the water reform outlet and sanitary ware, water heaters and other connections, it is recommended to install the triangle valve.
11. Pipeline pressure experiment should be done after the completion of waterway reform. The experimental pressure should not be less than 0.6MPa. The time is 20-30 minutes.
c) System water pressure test requirements 1) Before the pressure test, the water valve shall be closed and the indoor piping system shall be pressurized.
2) Slowly fill the end of the pressure test pipe and drain the gas from the pipe. Sealed with water.
3) Pressure should be increased slowly with a manual pump or electric pump. After rising to the specified test pressure (8 pressures in the general waterway), stop the pressurization and observe whether there is water seepage at the joint.
4) After the pressure is stabilized, the pressure drop within half an hour does not exceed 0.05 MPa.
5) At the end of the pressure test, the original records must be made and the signature must be confirmed. 6) After the waterway reconstruction is completed, the direction of the waterway reconstruction shall be issued.
>>> Links: Home appliances in weak wiring knowledge
Second, the circuit transformation part:
a) Material tips:
1. Choosing brand products that meet national standards.
2. The material must match the name of the product listed in the company's engineering quotation. 3. The section specifications of the used wire are 2.5mm2, 4mm2, and 6mm2. It is not affected by pulling force. It does not damage the wire core tightly, and it has no kink, dead bend, and no insulation damage. In the absence of a match, the colors of the wires used should be clearly distinguished.
b) Temporary use of electricity 1. Temporary use of electricity at the construction site shall have complete plugs, switches, sockets, and residual current circuit breakers, and temporary power must be used for cables.
2. Remove all the wires of the air switch when approaching, and then receive the temporary wiring box from the total incoming line. The engineering team shall bring its own distribution box, including leakage switch, air switch and socket with protection device. The cable shall be intact.
3, including cutting machines, angle grinders, electricity, hand drills, impact drills and other power tools, the insulation properties of the test should be intact, safe and reliable, the correct operation method.
Construction process:
(I): Slotted piping and positioning instructions:
Circuit design should be multiplexed to achieve air-conditioning, kitchen, bathroom, living room, bedroom, computers and high-power electrical shunt wiring; socket, switch separate, in addition to general lighting, wall air conditioning should be independent of the use of leakage protection devices; Strong and weak separation, sound, telephone, multimedia, broadband network and other weak circuit design should be reasonably regulated.
1. Before the wall and floor are opened, the cartridges are used for positioning. The surface of the pipe and the wall should be left with 15mm layer of dust to prevent cracking of the wall.
2. Do not arbitrarily destroy or change public electrical facilities, such as lightning protection grounds or protective grounding, without permission.
3, when the power line pipe buried, should be considered with the weak current line to maintain a distance of more than 500mm, the parallel distance between the electric pipe and the hot water pipe, gas pipe is not less than 300mm.
4, the wall line tube to reduce the turn as much as possible, and to avoid the installation of wall mirrors, furniture and other objects, to prevent damage by the hammer, nails.
5. If there is no special requirement, in the same suite, the switch is between 1200-1500mm from the ground, 150-200mm from the door, the socket is about 300mm from the ground, and the socket switches are all on the same horizontal line, the height difference is less than 8mm, and the parallel installation When the height difference is less than 1mm, it is not blocked by sliding doors, furniture, etc.
6, all kinds of strong and weak electrical socket interface Ning do not lack, on both sides of the bed should set the power outlet and a telephone socket, near the computer desk, living room TV cabinet wall should be set more than three power outlets, and set the corresponding TV, telephone, multimedia, broadband, and other outlets.
7. The method and requirements for laying weak circuits such as audio, television, telephone, multimedia and broadband networks are the same as those for laying power cables. The sockets or boxes are installed alongside the power sockets. However, it is not allowed to share a sleeve for strong and weak circuits. .
8. All the wall-in wires shall be embedded with PVC flame-retardant tubes of 16 or more, and the wires shall occupy <40% of the space of the tubes, and use special interface parts for connection with the bottom of the box.
9. When using the conduit, the power line pipe should pass through the ground to make a reasonable turning radius. Special attention should be paid to the use of the casing and glue connection under the ground. Before the ground is closed, the PVC pipe sleeve must be protected. There is a breakage damage; the PVC casing should be completely covered with cement mortar when laying floor tiles.
(2) Electrical installation 1. When wiring, the colors of the phase line and neutral line should be different; the color of the same residential line (L) should be uniform, the neutral line (N) should be blue, and the protection line (PE) should be yellow. Green two-color line.
2. Put the PVC glue on the head directly before threading the thread to avoid water. When the power cable is put through the pipe, the conductor should be straightened and then the pipe should be inserted. The connector can not be pulled out or pulled in the middle; when the weak wire is used, the force should not be excessive when it is threaded to avoid the wire from being broken.
3, the power branch connector should be connected in the socket box, switch box, lamp box, each connector should not exceed two wiring, the line should have a proper margin in the box.
4, audio cable into the wall should be done at the end of the box. At the joints of the multi-core telephone lines, the sheath nozzles are tightly wrapped with tape to prevent the phone lines from being wet and crosstalk and other faults from occurring.
5, TV antenna wiring must use the splitter and leave the inspection port.
6. Do not connect the power cable in the pipe, do not expose the power cable to the ceiling or directly to the wall to ensure that the power cable can be pulled or replaced.
7. The wire connection is firm, the joint is free from pulling force, and the packing is tight. When the screw (nut) is used to connect, the insulation distance of the wire is no more than 3mm. The connection between the copper wires is crimped or twisted. The length of the twisted wire is not less than 5 turns. , Bare wires must be wrapped with waterproof tape and then black cloth, no insulation damage and other defects approved by inspection.
8. The wires, signal lines, telephone lines, etc. that pass through the pipe are all tested to confirm if there is a short circuit between lines, a short circuit to ground, a disconnection, etc., and the embedding line pipe is then confirmed after it is confirmed.
9. The wiring of single-phase two-hole socket faces the left-right zero-phase of the socket, and the single-phase three-hole is directly above the ground line. The socket ground is laid separately and must not be mixed with the work zero line. All single-phase outlets should be "left-right, ground-on."
10, sockets, switches installed to be solid, seamless around, kitchen, bathroom and indoor and outdoor installation of the switch should use a splash box switch.
11, air-conditioning power supply with 16A three-hole socket, all heights below 1500mm socket should be installed with a protective baffle socket to prevent children from touching, the bathroom should be used for local equipotential connection terminals, sockets with waterproof splash type, and away from water. The lighting switch should be located outside the door. Mirror light and Yuba should be installed in the bathroom with a waterproof switch.
12, for the comfort of life, the bedroom should use double control switch, kitchen power outlet should be set side by side switch, control the power off.
13. When the socket, switch, and panel are fixed, use the matching screws. Do not use wooden screws or plasterboard screws instead to avoid damage to the bottom box. The switch mounting direction is the same.
14. The distribution box shall be separately powered according to the different power of the indoor electric equipment; high-power household appliances shall be independently wired and installed. The arrangement of the wires in the distribution box should be neat, the switches of the outlet lighting must be separated, the crimping accessories must be complete, the direction of rotation of the crimped conductor must be correct, the circuit breaker must be firmly connected, and no conductors with different wire diameters can be connected to the terminal of the circuit breaker. When crimping at the same end, distribution boxes must be balanced and each circuit must be marked.
15. After completion, submit a standard detailed circuit layout.
(III) Electrical Inspection 1. After all wiring is completed, line inspection tests must be performed on distribution boxes, sockets, and switches.
2. Weak current needs to be short-circuited and measured at the other end.
3, After all the electrical completion of the power detection, leakage switch action is normal, socket switch test power is good
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