Datasheet
ORT-10
Electronic Room Thermostat for use with OpenTherm boilers
Features
The ORT-10 is a sophisticated room thermostat which provides modulating control of OpenTherm equipped condensing gas boilers.
Unlike traditional thermostats, the ORT-10 exchanges data with the boiler it controls as opposed to simple on/off commands. This type of control, in addition to providing closer, more accurate room temperature control, also ensures that the flow temperature from the boiler is modulated down to as low a level as prevailing load permits, thus significantly increasing the proportion of the boiler operating time that is spent in economic condensing mode.
The thermostat is fully compliant with the OpenTherm communications protocol including low load regulation and domestic hot water “keep hot” feature now in common use in many combination boilers.
The thermostat utilises a micro processor which provides the accurate PI control algorithm and manages the bi-directional data communication with the boiler.
User interface is by means of an easy to understand setting dial and an LCD display that shows ambient temperatures, provides information on boiler output and a common alarm indication which is lit whenever a fault is encountered within the boiler.
•Provides full modulation to OpenTherm equipped boilers
•Simple to install 2-wire non-polarised low voltage communications
•Accurate PI room temperature regulation
•Significantly improves boiler efficiency
•Dial setting provides easy to understand user interface
The ORT-10 incorporates two additional energy saving features. Selecting on the dial, allows the user to select an 8°C heating setback temperature and turns the hot water store in the boiler off. The button switches off the hot water store within the boiler, but maintains the central heating temperature as its setpoint.
Dimensions |
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86 78
85 |
8 |
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Part No. 170 Issue 1 05/07 |
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Datasheet |
ORT-10 Electronic Room Thermostat |
Technical Performance |
Laboratory tests comparing the performance of |
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the ORT-10 OpenTherm room thermostat with |
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that of a traditional electro-mechanical on/off |
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thermostat, clearly show that modulating control |
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gives the best level of comfort, the lowest level |
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of energy consumption and the lowest level of |
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harmful CO2 emissions. |
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The speed of response of the modulating |
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thermostat is also significantly faster than it’s |
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on/off counterpart allowing even small changes |
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in room temperature to be communicated to the |
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boiler. |
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Results from tests made in a controlled laboratory environment, show that savings in the order of 15% are achievable when comparing the control of an OpenTherm boiler controlled by a modulating room thermostat compared to the same boiler being controlled by a traditional mechanical on/off thermostat.
Mechanical On/Off Thermostatic Control of OpenTherm boiler
Modulating Thermostatic Control of OpenTherm boiler
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Part No. 170 Issue 1 05/07 |