water pump controller

1. Temperature Display and Controlling 2. Auto Defrosting Controlling 3. Exhaust temperature protection 4. External alarm

NA8638 User Guide

Main function and Technique index

The controller is the special controller for heat pump water heater, it contains three temperaturesensors (water temperature, outdoor temperature, exhaust temperature,) three controlling output(compressor, defrost and fan) one alarm signal input (used forhigh and low pressure protection).

Main function as below:

   1. Temperature Display and Controlling : It can display water tank temperature and outdoor machine temperature, and it can also control the temperature of water in water tank at the set  temperature.

   2. Auto Defrosting Controlling :It has defrosting controlling logic of heat pump optimization design, and can defrost effectively in order to ensure that the outdoor machine can run normally even at low temperature.

   3. Exhaust temperature protection: When the exhaust temperature is too high, the controller protection: turns off the unit and generates alarm signal, and it can control the outdoor fan according to the exhaust temperature.

   4. External alarm: one external switch valve alarm signal input, it can be set to 3 modes: alway open, always closed or forbidden, and you can set the times and time of the auto recovery.

5. Running in different period of time: The controller has two modes: “Auto” and “Econ”, in “Econ” mode, the controller can set 3 periods of time, it can only heat in these periods of time.

6.Trial time limit: It can be set up a trial time. If controller cumulative work time exceeds the setting time, it will stops working; and continue working after relievingthe trial time limit.

7. Others: Real Time Clock, On-off State Memory When the power is off (adjustable), Direction of Others:cross valve can be set, Compressor start delay protection, Sensor Error Alarm, High Temperature Alarm, Add Fluorin, Test and so on.

Main Technique Index:

Range of Temperature Display: -50~150°C

Range of Temperature Set: 0~100°C

Power Supply: 220V±10% AC

Operation Environment:Temperature -10°C~50°C,humidity ≤85%.

Output Load Capability: Compressor 10A/250VAC,Others 2A/250VAC

Temperature Sensor Type: NTC R25=5kΩ,B(25/50)=3470K

Executive standard: Q/320585 XYK 01

Main Technique Index:

Range of Temperature Display: -50~150°C

Range of Temperature Set: 0~100°C

Power Supply: 220V±10% AC

Operation Environment:Temperature -10°C~50°C,humidity ≤85%.

Output Load Capability: Compressor 10A/250VAC,Others 2A/250VAC

Temperature Sensor Type: NTC R25=5kΩ,B(25/50)=3470K

Executive standard: Q/320585 XYK 01

pictures

 production process

water pump controller