| Message: | WRT-424 PI control can measure temperature through either internally-mounted temperature sensor or external temperature sensor. The switch of internally-mounted or external sensor can be realized through a switching device. The control can figure out the position of actuator by proportional-integral control function so as to keep the target temperature at set point.
Features:
1. For 2-pipe FCU, to control 0-10VDC & 4-20mA modulating valve, Fan on/off.
2. For 2-pipe FCU, to control float-point valve, Fan on/off.
3. For 2-pipe FCU, to control 0-10VDC & 4-20mA modulating valve, and 220VAC three-speed Fan (High-Mid-low).
4. For 4-pipe FCU, to control 0-10VDC & 4-20mA modulating valve, and 220VAC three-speed Fan (High-Mid-low).
5. For 4-pipe FCU, to control 0-10VDC & 4-20mA modulating valve, Fan on/off.
6. Fan speed stage and valve open angle both can be displayed in the screen.
7. Password protected programmable for user and control parameters.
8. Blue back light.
Application:
● Air system—Supply air cascade control;
● Air/water system—for 2-pipe or 4-pipe HVAC system, radiator or roof refrigeration;
● Water system: Ground heating, radiator or roof refrigeration;
● For temperature controlling of single room, apartment in hotel or meeting room
Technical Specification
1. Power Supply: Operating Voltage: 24V AC 50/60 Hz ± 10%
Power Consumption: Max 3W
Electrical Connection: terminal Connectors
Electrical specification: Signal ground = power ground
2. Product standard: Protection class: IP30 Safety Class: III
3. Environment: Ambient temperature: -10...50℃ Humidity: |
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