tube-tube heat exchanger / gas/liquid / exhaust gas heat recovery
exhaust gas heat recovery
For further reductions in flue gas temperature in hot water boilers, a variety of flue gas heat exchangers are available. The ECO Stand-Alone retrofit models are available without a bypass for heating boilers with gas burner, or with a bypass and flue gas switching valve for hot water boilers with oil/gas dual burner.
To permit the use of condensing technology, an additional downstream stainless steel flue gas heat exchanger module can be fitted to facilitate flue gas condensation.