- Natural circulation.- Volume 7 - 45 L.- Working temperature range at least 5 above ambient to +95 and additional boiling stage.
- Built-in Circulating Pump- Volume 45 L.- Working temperature range at least 15 above ambient to +95 and additional boiling stage.
- Volume 7.5 - 51 L.- Working temperature range at least 15 above ambient to +100 (with cover, depending on ambient pressure)