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| Appendix |
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PA1 to PA3: Heating circuits HK1 to HK3 |
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| Parameters | PA1 | PA2 | PA3 | Range of values |
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| Gradient, flow |
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| 0.4 | to 3.2 |
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| Level, flow |
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| to 30 °C |
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| Maximum flow temperature |
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| 20 | to 130 °C |
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| Minimum flow temperature |
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| 20 | to 130 °C |
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| 0 | to 50 °C |
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| Gradient, return flow |
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| 0.4 | to 3.2 |
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| Level, return flow |
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| to 30 °C |
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| Outdoor temperature; point 1 |
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| to 90 °C |
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| Outdoor temperature; point 2 |
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| to 90 °C |
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| Outdoor temperature; point 3 |
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| to 90 °C |
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| Outdoor temperature; point 4 |
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| to 90 °C |
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| Flow temperature; point 1 |
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| 20 | to 130 °C |
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| Flow temperature; point 2 |
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| 20 | to 130 °C |
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| Flow temperature; point 3 |
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| 20 | to 130 °C |
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| Flow temperature; point 4 |
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| 20 | to 130 °C |
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| Return flow temperature; point 1 |
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| 20 | to 90 °C |
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| Return flow temperature; point 2 |
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| 20 | to 90 °C |
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| Return flow temperature; point 3 |
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| 20 | to 90 °C |
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| Return flow temperature; point 4 |
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| 20 | to 90 °C |
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| 0 | to 50 °C |
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| 0 | to 50 °C |
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| Day set point |
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| 10 | to 90 °C |
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| Night set point |
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| 10 | to 90 °C |
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| Sustained temperature |
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| 10 | to 90 °C |
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| Maximum return flow temperature |
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| 20 | to 90 °C |
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| Minimum return flow temperature |
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| 20 | to 90 °C |
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| OT activation value rated operation |
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| to 50 °C |
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| OT deactivation value |
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| to 50 °C |
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| reduced operation |
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| OT deactivation value |
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| 0 | to 90 °C |
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| rated operation |
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EB 5179 EN 131