Tag: T874A Thermostat

Honeywell T874A Zone Thermostat  Application These T874A,D Zone Thermostats and Q674B,D,E Subbases provide 24 to 30 Vac temperature control in Honeywell Trol-A-Temp heating/cooling zone systems. See Table 1 for thermostat/subbase and system compatibil-ity; see Table 2 for thermostat specifications. For complete Honeywell Trol-A-Temp System specification and appli-cation information, refer to the system specification in-cluded with…