1, household power supply standards.
In accordance with national standards, the power supply of household electrical equipment should be single-phase three-wire 50 Hz 220 V AC. The three power lines --- FireWire, zero line, ground connection is correct and consistent with the external logo, good grounding, insulation protection intact, Wire diameter thickness to meet the capacity load requirements of the national power quality power supply voltage allowable deviation of 10% to 7%, according to the 220-volt standard voltage calculation is between the range of 198 volts to 235 volts for electric water heater products, the deviation is expanded to -15 % To 10%, that is, 187 volts to 242 volts in the area where the electricity load is relatively concentrated, should be properly expanded.
2, protection requirements.
The total household meter load can not exceed the standard, preferably with air protection switch, at least fuse protection --- such as the fuse (wire), fuse (wire) nominal value can not exceed the limit value. The power supply lines should be set separately. Do not share a power cord with other high-power electrical appliances (such as Yuba, heater, electric heater) (note that it is connected from the meter instead of the socket on the wall, not from the middle Connection), separate settings leakage, overload, over-current and other protective devices, the protection of the current value of not more than 2 times the rated current of a single appliance.
3, power outlet and extension cord.
According to the requirements of national standards, single-phase three-wire (hole) socket, the left end of the socket is N pole, then the zero line; the right end of the L pole, phase (fire) line; The end should be grounded, not interchangeable.
Socket should be matched with the electric water heater plug, the best use of 16 amps, especially when the electric water heater rated power consumption of more than 2000 W. Socket is best to use waterproof, with shell protection to prevent water and steam into the plug and socket connection gap . Socket as vertical as possible, if installed in the walls and other objects, should be far away from the water or nozzle, the best bath and bath water, water can not be direct contact. Socket should be easy to connect firmly to prevent the power lead pull, touch When touch, due to poor connection spark. Power leads should be bundled longer, fixed and fixed to the object is not easy to move.
Power wiring should not be too thin, the power should be greater than the rated maximum electrical power of electrical appliances 50% or more, the current in the 6 amperes to 10 amperes (power 1320 watts ~ 2200 watts), the choice of power cord cross-sectional area ≥ 1 mm2; current In the 10 amperes ~ 16 amperes (power 2200 watts ~ 3520 watts), the choice of power cord cross-sectional area ≥ 1.5 mm2; current in the 16 amperes ~ 25 amperes (power 3520 watts ~ 5500 watts), the choice of the power cord cross-sectional area ≥ 2.5mm2. The outer sheath should be waterproof and wear-resistant with adequate and good firm connection at the connector and the connector. When using for a long time, it can be easily judged without holding the temperature.
Reminder: Consumers must not self-mate with power leads, installation and maintenance professionals can not match or change the power supply leads.Changes and mates the power cord must be trained by an electrician card professionals, electrician jobs Special operations, must be certified posts.
Installation should be carried out by qualified personnel
Professional installation staff through induction training enterprises to understand product performance, comply with the installation rules, master installation skills, users can use the environment specific design and installation programs to complete the installation.
Electric water heater installation difficulties is to fully understand and grasp the user's use of the environment, such as the bathroom structure, the installation of the situation, the power situation.
According to different environmental, product and user requirements, installation personnel should meet the installation requirements and make the product performance better and be beneficial for future maintenance and repair. The installation of electric water heater in the bathroom is very complicated, the wall is Solid brick, concrete wall more convenient installation and drilling, the wall is not load-bearing or bearing wall tiles and other decorative materials, the need for special measures to deal with, so the installer skills are particularly demanding, especially in the bathroom wall May be embedded with power cord, water pipes and other items can not be damaged and the location, depth unknown, we must use professional instrumentation for pre-detection and positioning.
The installation of electric water heaters is in some ways more complicated than the installation of air conditioners as it involves the connection of water inlets, outlets, valves, water changeover valves, etc. In addition to the tight connection required by the pipeline, Insulation, the length of the pipeline and the alignment path, the appearance of tidy, water pipes and other ground.
Electric water heater installation, must ensure that the product of the protection function is normal, effective and timely work, such as water temperature control, water and dry control, power protection and control, leakage control, air flow and so on.
Installation or maintenance personnel must explain to users in detail precautions, indicating the daily use of safe and maintenance content, describes the special circumstances and methods of dealing with.
Purchase must see the energy efficiency rating
Users in the purchase of electric water heater products, to choose a 3C logo products, pay attention to the product's energy efficiency rating logo and the scope of the product.
Installation of the product, the user to see if the installer has the appropriate professional qualifications or the identification of the corresponding identification of enterprises, special operations must hold the appropriate proof of operation. Users should follow and respect the installation of the opinions or suggestions, the installation of the technical conditions are Ensure that the zero line can not be a ground wire, ground wire can not be connected to the heating pipe, water pipes and other facilities as a grounding in the case of two-wire, otherwise it will leave a major security risk.
Consumers must carefully read the instructions, and in accordance with the provisions of the proper use of daily use, such as found hemp feel, should immediately stop using, unplug the power plug, ask professionals for overhaul.
In addition, in the event of a short circuit, the fire must not be extinguished by water, but should immediately cut off the power, or even unplug the power plug or turn off the power of the main gate. In particular, be careful not to directly remove the water with water (water heater, washing machine, electric pan, etc.) In case of electric shock, immediately try to cut off the power, unplug the power plug or turn off the power main gate. Pay special attention to the fact that you can not directly touch the body of the electrician or the unplugged wire and plug by hand.
When not in use for a long time, be sure to unplug the electric water heater at home.
Electric water heater installation
1, first hang up, then install waterway .Waterway installation, must use PPR material sanitary plumbing, water pipe connection should be reliable and reliable sealing ring connection, safety valve valve should be directly connected with the water heater inlet, and then connect the water pipeline;
2, Before installing the waterway, it is necessary to distinguish the positions of cold water and hot water interface corresponding to the water heater and to clean up the dirt in the pipe and to identify whether the facilities of the waterway and the pipelines are reasonable and correct;
3, the installation of water heaters directly below the ground must have effective drainage pipes.
Electric water heater installation environment requirements
1, the electric water heater installed in the indoor load-bearing wall, the wall must be solid wall, otherwise there are security risks, if you can not accurately determine whether the load-bearing wall, to be added in the water heater bracket support treatment;
2, the right side of the electric water heater to be maintained with the wall at least 30 ~ 1250px distance for maintenance;
3, Do not install the electric water heater ceiling, otherwise inconvenient with the electric water heater maintenance and maintenance, affecting the product drainage, affecting the safety valve relief pressure relief, there is the risk of damage ceiling;
4, the installation environment should be relatively dry and ventilated, no other corrosive substances exist, water and sunlight can not be in direct contact with the place;
5, below the electric water heater must have a reliable drain drain to drain;
6, electric water heater socket should be used in line with the safe use of the independent fixed three-pole socket, and can not use the active socket;
7, water heater pressure is normal, generally not more than 0.7mpa, such as water pressure is indeed too high, it must be installed in front of the valve; and pressure relief valve also need to install the draft tube, leading to the floor drain or drain Department.
Whether it is the standardization of water heater installation steps, or in the selection, the installation of strict and standardized environment, are for consumers to safely use the water heater, water heater to enjoy the comfort of the bath to enjoy.
