Solid fuel damper thermostat
The QW damper thermostat offers automatic temperature control and economy in the consumption of fuel. It can be used on room heaters, boilers, wood fired stoves, central heating units and night store electric room heaters.
The QW damper thermostat is of a robust steel construction with a copper sensor phial and capillary. The range spindle can be supplied horizontal or vertical to suit application. Damper arm and plates may be varied to suit application subject to economical quantities.
The QW thermostat controls the combustion in a solid fuel appliance by throttling the primary air intake to the fire. A flat damper plate at the end of the control arm is moved relative to the air intake port of the appliance in response to variations of temperature at the sensor.
Thermal operation is by liquid expansion in the sensing phial, through copper capillary tubing to a stainless steel diaphragm capsule located in the instrument head.
The QW is also used to optimise the distribution of core heat in night storage heaters by regulating the flow of warm air to maintain a controlled room temperature.