Control Description The tekmarNet® 4 Thermostat 542 is designed to operate mechanical
equipment to deliver heat to a single zone within a hydronic heating
system while maintaining a programmable setback schedule. It can be used
with any terminal unit type, including radiant floor, baseboard, and
fan coils. It is capable of controlling a zone valve or zone pump
directly or through a tekmarNet® 4 Wiring Center or Zone Manager to
maintain air temperature and an auxiliary temperature. This temperature
is typically floor, but could also be remote air.