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• Selectable on/off load compensation or On/Off control
• User Set Upper and Lower Temperature Limits
• Output On Indication
• Power Indication
RET1000M/MS/MD combines a sleek modern design with a high performing energy saving control. The well-proportioned dial and clear temperature scale makes setting easy, including an easy to set upper and lower temperature limiting feature.
The RET1000M/MS/MD thermostat includes stylish backlit LED icons providing clear indication of power and output status.
As well as standard on/off control the user can select to benefit from on/off load compensation. Normally set at installation although easy to change via a DIP switch this micro-processor based control system will deliver increased comfort and improved economy.
When on/off load compensation mode is set, the thermostat introduces a fixed cycle rate on the system and then determines the duration of the On and Off periods within each cycle in proportion to load. The control algorithm used to determine the on/off periods uses a proportional + integral (PI) routine to eliminate off set normally associated with on/off or simple proportional control.
On/off load compensation significantly improves comfort and generally improves boiler efficiency by optimising water temperature.
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