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TWA-Z Thermal Actuator
Brand: DanfossDanfoss thermal actuator TWA-Z is used with Danfoss automatically balanced combination valves type AB-QM.
The actuator can be controlled with an on/off controller, pulse width modulation (PWM), or switch.
These provide a cost effective solution for the control of hot and chilled water for fan coil units, small reheaters and recoolers in temperature control systems.
Features- 24 V AC/DC or 230 V AC supply
- Position indicator
- Normally opened (NO) or normally closed (NC) version
- Max. medium temperature 120° C
- Cable included
Specifications
Brand
Ambient Temperature Range
- 2° to 60° C (35.6° to 140° F)
Applications
- Automatically Balancing Valves
- Small Reheaters
- Temperature Control System
Cable Length
- 3.9 to 32.8 feet (1.2 to 10 metres)
Consumption
- Power Consumption: 2 W
Current
- Maximum
Electrical Contacts
- N/C Contact
- N/O Contact
Environmental Protection
- IP41
- Protection Class: Class II, for 230 Vac
- Protection Class: Class III for 24 Vac/dc
Frequency
- 50/60 Hz
Input
- Control Input: ON/OFF
- Control Input: PWM
Mounting Position
- Horizontal or Upwards
Power Requirement
- 230 Vac, ± 25 %
- 24 Vac/dc, ± 25 %
Principle of Operation
- Thermal Expansion
Process Temperature
- Maximum
Response Time
- Full Stroke Time: 3 minutes
Storage Temperature
- -40° to 70° C (-40° to 158° F)
- Automatically Balancing Valves
- Temperature Control System
- Small Reheaters