Device for cooling the control system of an electric boiler for central hot-water heating system
EP0023465A1
Electrical regulation means for the hydraulic characteristics of a circulating device in a central heating arrangement
FR2485291A2
Electrical control of central heating pump speed - is by auxiliary impedance with temporary short-circuit for motor starting
FR2481859A2
Electrical control of central heating pump speed - is by auxiliary impedance with temporary short-circuit for motor starting
FR2462810A1
Electrical control of central heating pump speed - is by auxiliary impedance with temporary short-circuit for motor starting
FR2417064A2
Central heating system filling equipment - has valve with sliding plug opening either inlet and outlet or drain ports
FR2404809A1
Filling vessel for central heating system - has inlet and outlet controlled by rotating plug to provide air pocket and prevent contact between system water and mains water
FR2402785A1
Electrically driven centrifugal pump for central heating - has moulded plastics volute and inlet duct to eye of impeller
FR2398435A7
Portable centrifugal pump with non-magnetic seal sleeve - has stator windings sealed against immersion by plastics coating and drain plug in base of rotor chamber
FR2258546A1
Double pump unit for central heating - blocks return flow when one pump of two parallel pumps stops
ES381129A1
Improvements in the acceleration provisions for central heating. (Machine-translation by Google Translate, not legally binding)
ES372472A1
A single phase asynchronous electric motor
ES350672A1
An improved single phase electric motor
FR1534853A
Improvement in single-phase electric motors, with auxiliary phase in short circuit
ES343673A3
Improvements in the electric motors for central heating accelerators. (Machine-translation by Google Translate, not legally binding)
ES343674A3
Improvements in the circulation and similar pumps. (Machine-translation by Google Translate, not legally binding)
ES341973A3
Improvements in the stopping of the rotation of an asynchronous engine. (Machine-translation by Google Translate, not legally binding)
FR1471206A
Single-phase asynchronous motor
GB1127615A
Method and means for the detection of rotation of a single phase asynchronous motor
