> Building Automation > Vista > TAC 239W Domestic Hot Water Temperature Controller 
The TAC 239W controller is part of the C80 system and is designed for the control of domestic hot water systems. The output is a 2–10 V or a 0–10 V signal, which can position one or up to 10 actuators of the EM type in parallel.The setpoint can be increased or decreased via the SPC input.
For best results, the TAC 239W should be used in combination with a fastSpecifications
Supply voltage .................... 16 V DC ±0.4 V, 24 V AC ±20%,50–60 Hz
Power consumption .............max. 25 mA
Dimensions ........................... 127 x 54 x 74mm
Temperature sensor ............. 1800 ohm/25 °C (77 º F)
Control Output Y
Output voltage ........................ 2–10 V or 0–10 V, direct acting
Load ........................................ max 2 mA; max. 10 control inputs, short circuit proof
Control Input Z1
Permitted voltage ................... max. 16 V DC
Input current .............................max. 0.1 mA
Ambient Temperature
Operation ................................ 0 to +50°C (32 to +122 º F)
Storage ................................... –40 to +50°C (-40 to +122 º F )
Ambient humidity ....................max. 90% RH
Enclosure Rating
Cover ...................................... IP 54 (similar to NEMA 13)
Terminals ............................... IP 31 (similar to NEMA 1)
