Double Coil wall mounted furnace

SDL-XQ070A2A-200L4400

Voltage: AC200V

EV1 current: 0.07A

EV2 current: 0.13A

EV1 power: 14W

EV2 power: 26W

Connection method: series connection

Total resistance: 4400Ω

Withstand voltage: 1800VAC, 1S, ≤3mA

Introduction to "Full Premixed Gas Combustion Technology": Gas and air are fully premixed before entering the combustion chamber to make combustion more complete, improve combustion efficiency and reduce harmful gas emissions, and also reduce the space of the combustion chamber. Demand is currently the most advanced gas combustion technology in the world. This technology is a new combustion technology that was only developed in the 1980s. Gas burners developed using full premixed combustion technology are widely used in gas boilers, food processing, engineering machinery, optical glass smelting and other fields. The fully premixed burner has surface combustion, radial flame distribution, uniform temperature field, stable flame, and good safety. Compared with traditional gas burners, it burns more evenly and fully, with large combustion surface, high intensity, and low air excess coefficient. Small, more conducive to the utilization of heat energy and environmental protection, it is an innovation of gas burners.

Full premixed gas combustion technology is also used in gas wall-hung boilers.

The characteristics of this kind of wall-mounted boiler are: as a mature heating terminal system, the water floor heating system has a low water supply temperature, generally around 40°C to 50°C. This characteristic of the water supply temperature of the water floor heating system determines that this temperature characteristic must be considered when combining the wall-mounted boiler with the water floor heating system. Compared with ordinary wall-hung boilers, condensing wall-hung boilers can be more conveniently and perfectly combined with water and floor heating.

When the outdoor temperature is lower than -3℃, the system demand temperature of the wall-hung boiler will be lower than the dew point temperature of the flue gas, which is 57℃. At this time, the ordinary wall-hung boiler must use a water mixing device to reduce the water supply temperature and increase the return water temperature to avoid The internal temperature of an ordinary wall-hung boiler is lower than the dew point for a long time and meets the water supply temperature required by the water and floor heating system. The condensing wall-mounted boiler does not need to use a water mixing device and can directly provide hot water to the water floor heating system.

According to the domestic energy efficiency standard for wall-hung boilers - GB20665-2006, when the supply and return water temperature is 80℃/60℃, the thermal efficiency of ordinary wall-hung boilers under full load is about 90%, and the thermal efficiency of condensing wall-hung boilers under full load is about 90%. The thermal efficiency is about 99%.

According to the relevant regulations of EN483, when the supply and return water temperature is 50℃/30℃, the thermal efficiency of the condensing wall-mounted boiler is approximately 105% under full load, and can reach a maximum of 109%. The supply and return water temperature of 50℃/30℃ just meets the water temperature requirements of the water floor heating system. There is no need to run the condensing wall-hung boiler in the low-efficiency high-temperature section, and the energy-saving effect of the condensing wall-hung boiler can be fully utilized.

Since the thermal efficiency of the condensing wall-hung boiler is about 15% to 20% higher than that of the ordinary wall-hung boiler, and the thermal efficiency of the water floor heating system is about 12% higher than that of the ordinary radiator heating system, therefore, the "condensing wall-hung boiler + water floor heating system" is better than the "ordinary radiator heating system". The thermal efficiency of "wall-hung boiler + ordinary radiator heating system" is about 30% higher.

The solenoid valve is the actuator and the coil is the original power.

This coil is made of pure copper enameled wire, with a high temperature resistance of 180 degrees, and is made of plastic packaging. Safety is greatly improved, aging resistance and impact resistance. After being wrapped, the sealing properties are tested by soaking in water, and 100% fully inspected for resistance, voltage resistance, and insulation resistance before shipment to ensure the stability of the proportional valve.