Features  

• LONMARK® HVAC profile #8020 

• Stand-alone operation or on high-speed 78 kilobit Echelon® LONWORKS© network  

• Uses Echelon LonTalk® protocol  

• FTT10A Transceiver  

• Direct connection of thermal actuators 

OTE: VC6983 generates high-voltage pulses in the end position and therefore cannot be used in conjunction with the W7754.  

• Direct connection to fan switch  

• Direct and indirect connection to electrical heat  Supports (via relays) staged fan (up to 3 stages) or (via 0…10 V output) variable-speed fan  

• Factory-configured default parameters  

• Wide range of supported valves and actuators  

• Supports (via 0…10 V output) one proportional valve or a 6-way valve for heat/cool chilled ceilings (alternatively to variable-speed fan) 

• Interlocks and time delays to protect equipment  

• Connected floating actuators exercised once a week  

• Slim design fits into narrow fan coil units  

• Terminals all on one side allow controllers to be positioned at back of fan coil unit  

• Power supplied by power mains or 24 V