BF-8805A temperature-controlled water feeding controller can be widely used in the process control of storing hot water with suitable temperatures produced by solar energy, heat pump and other hot water heating systems. Through heating the water tank of the system (water tank A), once the water temperature falls into the set temperature range, the controller immediately starts hot water collection by transferring hot water in the heating water tank A into the large-sized hot water storage tank B for future use. 8805A controls the process of continuously refilling hot water with a suitable temperature from the water tank A to the water tank B until the water tank B is fully filled.
In addition, 8805A is often used for the intelligent control of the water content and water temperature progressive increase for heat pump water tanks, as well as the process control of constant-temperature collection by transferring hot water with the set temperature from solar collector plates to storage water tanks.
8805A is able to cater for a variety of applications due to its high flexibility.
The controller with advanced power supply technology can ensure stable, reliable and continuous operation when the power supply varies within the range of AC80~240V.
One-channel 240K NTC temperature sensor input, the sensor can be extended by 100 m
One-set water level sensor inputs, able to detect 4 water levels displayed in percentage
Channel-1 NO/NC contact output, able to control heating
Channel-2 NO contact output, able to control constant-temperature water feeding
Forced water feeding at low water level
Constant-temperature heating
Temperature measurement deviation correction
Memory protection after power failure
| Packing List of Product | 1. Main unit 2. 1 x NTC (240K) temperature sensing wire, 1 x AT35-7 water level sensing wire kit 3. User instructions 4. M29 water level pinboard 5. Waterproof cover 6. Mounting bracket |
Overall Dimensions (mm) |
58 (L) × 78 (W) × 85 (T) |
Installation and Dimensions (mm) |
Window-mounted, opening size: 51 (L) ×71 (W) |
Weight |
Net weight: 0.474 Kg Gross weight: 0.627 Kg |
Power Supply and Consumption Power |
AC (80～240)V, 2W |
Operating Conditions |
-10℃~ 50℃ |
Display Mode |
LED digital display |
Keys |
Push-type membrane keys |
Input |
One channel for 240K NTC thermistor temperature sensor input, measuring range: -19～99 ℃; One channel for AT35-7 water level sensor input, measuring range: 0%, 30%, 50%, 80%, 100%. |
Output |
1. Channel-1 relay NO/NC contact temperature-controlled heating output, Channel-2 relay NO contact water feeding output 2. Current capacity of each channel contact: 6 A (resistive load) and 1 A (inductive load) Able to control a 1000W electric heater or a 200W motor or water pump. AC contactor required for capacity expansion in case of larger load |
Measurement Range |
Measuring range of temperature sensor: -19～99 ℃ Measurement range of water level sensor: 0%, 30%, 50%, 80%, 100%. |
Setting Range |
Setting range of heating temperature: 10～99 ℃ Setting range of constant-temperature water feeding: 10～99 ℃ Setting range of water level: 0%, 30%, 50%, 80%, 100%. |
Control Range |
Control range of temperature control: 10～99 ℃ Control range of constant-temperature water feeding: 10～99 ℃ Control range of water level: 0%, 30%, 50%, 80%, 100%. |
Other Parameters |
1. Temperature sensing wire can be extended by 100 m with ordinary wire for long-distance connection 2. Memorize the set parameter for a long time after power failure 3. Temperature control hysteresis difference: 2-20℃ 4. Setting range of refilling water level: 0%, 30%, 50%, 80%, 100% |
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