andrews SF61 Technical Documentation Manual page 9

System 5: bypass water heater
This system is mainly used in industrial processes with a constant demand of hot water.
The bypass water heater can be used without a buffer tank, as the internal bypass covers the
minimum flow rate through the water heater. The Bypass water heater can heat up the hot
SF60
System 6: bypass water heater with buffer tank
This system is mainly used in industrial processes, where there is a requirement for direct
increase of the water temperature with more than 17K, without having a constant demand.
Without the buffer tank the bypass water heater would generate many starts and stops and
have a restive regulation.
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