Zip InLine ES3, ES4 and ES6 instantaneous water heaters are compact
electronically controlled instantaneous water heaters for hand washing.
This small instantaneous water heater is intended to provide economical heating of
water for a wash basin when installed together with a sanitary water fitting. When
the hot-water tap is opened, the heater switches itself on automatically when the
minimum water flow rate is exceeded and heats the water as it passes through