Absolute Boilers 750-900-1050
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Absolute Boilers 750-900-1050
5.3 Limit Controls
5.3.1 Temperature control
The Absolute boiler is equipped with an electronic temperature limit control based on flow, return, and flue gas
temperature sensors. The flow temperature is adjustable between 68-200°F [20- 93°C].
5.3.2 Low water level protection (LWCO) (flow and content)
The Absolute boiler is equipped with low water protection based on temperature differences (ΔT) between flow and
return. When the ΔT = 45°F [25°C] (factory setting) the boiler starts modulating down so that it remains operational
as long as possible. When the ΔT = 72°F [40°C] the boiler will be at part load.
If the ΔT continues to rise and reaches 81°F [45°C], the boiler shuts down, and will restart when conditions return to
normal.
