Radiator Thermostats





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		TWA actuators
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TWA actuators

TWA actuators are used to electrically activate valves on hot water heating systems, where slow opening and closing is desirable to eliminate water hammer associated with quick acting valves. TWA is a low voltage (24V), low power consumption actuator equipped with a visual indicator to show the open or closed position of the valve. TWA actuators can be selected to create either a normally open or a normally closed control. Maximum ambient temperature is 140F (60C).

Technical data

Code No.	Type	Connection	Supply Voltage (V.a.c.)	Valve Function
TWA-A
088H3110	TWA-A	RA 2000	24	NC
088H3111	TWA-A	RA 2000	24	NO
088H3114	TWA-A	RA 2000	24	NC/S (with end-switch)
TWA-V
088H3120	TWA-V	VMT (065F0102, 065F0104)	24	NC
088H3121	TWA-V	VMT (065F0102, 065F0104)	24	NO

Documentation

3 Documents Found: 2 instruction and 1 leaflet

Instruction

Instructions TWA NO/NC
VI.SB.H3.02.pdf (0.6 Mb), Literature number: VISBH302, Language: English, Release date: 15/12 2005

TWA-A NC/S instructions
VISAQ202_088R02471.pdf (0.4 Mb), Literature number: VISAQ102, Language: English, Release date: 01/03 2003

Leaflet

Zone Valves
Zone Valves_Brochure.pdf (0.3 Mb), Literature number: VBSBP122, Language: US English, Release date: 17/07 2007

TWA actuators

Technical data

TWA-A

TWA-V

Documentation