The NA320 Temperature Controller User Manual provides functions, technical specs, operation instructions, advanced settings, wiring diagram, and safety notes.
The manual describes the NA320 controller’s main functions such as refrigeration control, defrost control, and external alarm handling, together with its technical specifications including temperature ranges, power supply, and output contact capacity. It also outlines the operating environment and sensor type required for proper use.
Detailed operation guidance covers panel indicator meanings, display codes, setting temperature limits and defrost cycles, manual defrost procedures, and advanced internal parameter adjustments. The document includes a wiring diagram, installation precautions, and safety recommendations for reliable operation. This manual is written in Chinese.
| Temperature display range | -50 °C to 125 °C |
|---|---|
| Temperature setting range | -45 °C to 120 °C |
| Power supply voltage | AC 220 V ± 10 % or 380 V ± 10 % 50 Hz |
| Operating environment | -10 °C to 45 °C, humidity ≤ 85 %, no condensation |
| Output contact capacity | 3 A / 250 VAC (pure resistive load) |
| Temperature sensor type | NTC R25 = 5 kΩ |
Long‑press the “Set” key for 2 seconds to enter setting mode, then use the “5” or “6” keys to adjust the upper or lower temperature values.
The display shows “EE” when the temperature sensor is short‑circuited.