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Novus N321S RS485 Differential Temperature Controller Solar/Water/Air (100-240V)

Great for:

Harnessing renewable energy
Controlling hot water temperature in solar installations e.g. Swimming Pools, Hot Tubs and Hot Water
Recycling hot air in factories, warehouses and agricultural buildings
Cooling grain stores to maintain correct differential
Includes x 2 NTC sensors
RS485 Model for serial communication

The N321S is a controller originally intended for solar water heating applications. It controls liquid or air circulation system based on the difference in temperature between the two supplied sensors.

The instrument contains two NTC-type temperature sensors. In a solar application the control output is uséd for activating the water circulation pump. This maintains an even temperature between the solar collector and storage tank.

For air destratification/circulation the control output is uséd to activate the high level fan to keep an even temperature throughout the building layers. This eliminates wasted heat trapped at the top of a building.

As part of a solar system it provides protections against overheating and freezing to the piping, preventing damage to the system.

This product contains additional wiring terminals and firmware suitable for RS485 communication.

MPN 80321S3312

Novus N321-S Datasheet Download

Novus N321-S Manual Download

Novus N321-S Modbus Register Table

- NTC Thermistor: 10 kΩ @ 25 °C, range: -30 to +105°C (-22 to 221 °F), Accuracy: 0,6 °C (1,1 ºF)
- Sensor interchangeability: 0,75 ºC (1,35 ºF)
- Measurement Resolution: 0,1º from –19.9 to 119.9º
- Output: Relay SPDT, 1 HP 250 Vac / 1/3 HP 125 Vac (16 A Resistive)
- POWER SUPPLY: 100 to 240 Vac/dc ±10%
- Optionally: 12 to 30 Vdc/ac
- Mains Frequency: 50~60 Hz
- Power Consumption: 5 VA
- Dimensions: 75 x 33 x 75 mm
- Weight: 100 g
- Panel: 70 x 29 mm