Hamworthy Ensbury LT 70, Инструкции по установке и сборке

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Ensbury LT 70 - 580
We reserve the right to make changes to dimensions and construction 13 edition 12.2020
Hamworthy Heating Limited – Dorset BH17 ONF
4.6. Correction values for different operating conditions
4.6.1. Flue gas temperature correction values
Average boiler water temperature t °C 40 50 60 70 80 90
Flue gas temperature difference ∆ t K - 25 - 16 - 8 ± 0 + 8 + 16
Excess air
λ
- 1.10 1.15 1.20 1.25 1.30 1.35
Flue gas temperature difference ∆ t K -6 -3 ± 0 +3 +6 +8
4.6.2. Modulation range
The minimum power of the boiler is limited by the minimum allowable flue gas temperature. Consequently, the
modulation range increases when the average boiler temperature increases. This is exemplary illustrated in the
figure below (example for oil operation with a minimum flue temperature of 120°C).
Flue gas temperature – Boiler power diagram, example for two average boiler water temperatures
4.6.3. Stand-by loss correction values
Average temperature difference *
∆
tm °C 30 40 50 60 70
Stand-by loss correction
∆
qB % -40 -20 ± 0 20 40
* Average temperature difference = Average boiler water temperature minus ambient air temperature
Average boiler water temperature = Average of supply and return temperature