| 摘要 |
FIELD: automatic gas heaters; gas heating control systems. ^ SUBSTANCE: autonomous safety and adjusting device for gas-fired boiler has safety valve unit provided with flame sensor, heat carrier draught and temperature sensors, indoors thermostat provided with valve. Safety valve unit provided with flame sensor works pneumatically. Electronic indoor thermostat is provided with valve electric drive. Electrical heat carrier draught and temperature sensors are connected with electric drive through OR gate to lock the valve of indoor thermostat. Heat carrier flame and temperature sensors work pneumatically and are connected with safety valve unit through OR gate. ^ EFFECT: gas economy; improved reliability of serial domestically produced model of heater; simplified maintenance. ^ 2 cl, 8 dwg |
