Savastat - Load Compensation and Reactive Programmers
Weather Compensation
Typically found in commercial systems
(Building Regs. specify this must be applied for all buildings with 100Kw heating load)
The principle of weather compensation is to vary the output of the heating system in relation to the outside temperature. This is typically achieved by mixing hot water from a primary loop into the cooler secondary loop (the water passing through the radiators). This is varied by using a motorised valve, driven by the compensation control. An outside sensor is required to monitor outside temperatures. Siting of this sensor is crutial to effective control.
Savastat LC (Load Compensation)
The outside temperature changes have an impact on the system and its control, when it gets colder the system controls react by allowing more heat into the building to maintain the room temperatures and vice versa. When the system responds to these changes there is a measuable effect on the water temperature when it returns to the boiler. It is at this point that Savastat LC monitors these changes and is able to adjust the boilers output - so Savastat LC compensates for these weather changes in a similar way to the traditional weather compensator.
Savastat LC is compatable with existing weather compensation systems. If no weather compensation exists Savastat LC provides a compensation action via monitoring load which is affected by all external and internal conditions.
