Device for simultaneous control of air flow and circulation spee
Device for thermostatic valves, particularly for the temperature
Device for uncoupling the oil flow through a radiator
Device for use with flue dampers
Device to compensate for an external sources' thermic effects on
Devices for controlling and regulating the gas supply to the bur
Diagnostic apparatus of coolant temperature sensor,...
Diagnostic system for a fuel-fired water heater
Diagnostic thermostat
Diaphragm operated pressure regulator
Differential relative humidity and temperature sensitive...
Differing-temperature liquid-mixing apparatus and method using p
Digital control circuit
Digital electronic thermostat with correction for triac self hea
Digital modulation for a gas-fired heater
Digital thermostat
Digital thermostat with protection against power interruption
Digital thermostat with single rotary encoder switch for establi
Direct air cooling of outdoor electronic cabinets
Direct digital control thermostat