0-10V LCD digital thermostat - WRT-422

Contact: Mrs Vivian

Mobile: + 86 13677320684

Specification:

1. Temperature control for 2-pipe HVAC system;

2. 3-way digital output. 2-way output 3A/24VAC to control floating-point valve; 1 way output 3A/250VAC for starting air handing unit motor and damper actuator, etc;

3. 1 analog output for o~10V or 4~20mA analog signal;

4. 1 analog input for o~10V or 4~20mA analog signal;

5. 1 built-in temperature sensor. Optional connection for external temperature sensor or built-in temperature sensor via setting parameter.

6. The size of output signal can be displayed in the LCD screen;

7. Password protected programmable user and control parameters.

8. Blue back light.

Application

Air system—Supply air cascade control;

Air/water system—for 2-pipe HVAC system, radiator or roof refrigeration;

Water system: ground heating, radiator or roof refrigeration;

For temperature controlling of single room or grossraum in hotel or meeting room

Input/output requirement

Temperature Sensors: Use only approved NTC thermistor sensors

Analog input configuration: analog input may be configured with a jumper for voltage (0-10 VDC) or Current (0-20 mA) control signals.

Analog output configuration: Choose PI control valve configured with voltage (0-10 VDC ) or Current ( 4-20 mA).

Floating point output: Choose floating-point control valve.

Discrete output: Control for water pump, fan, on/off valve, damper actuator and humidity

Diagram and WIring: