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How use a Recirculation Pump for a Tankless Water Heater using an Ariston Mini Hot Water Tank


Avoid long pipe run from the Tankless Water Heater to the Ariston / Bosch 300T Hot Water Heater. 

Any Tankless Water Heater will work and we recommend using an Bosch 3000T - formely Ariston GL4 or GL6+.

Timed operation is suggested. Mini tank remains heated at all times while circulator pump can be programmed with a timer to circulate in early morning hours and evening, when demand is greatest. Also, cold water plugs will be eliminated with this method when using the proper size tank with a tankless water heater.


This diagram is for reference only. Always refer to the manufacturers installation manual for exact information.


Avoid long pipe run from the Tankless Water Heater to the Ariston Hot Water Heater


This is just an example. Actual layouts vary from job to job.

List of materials needed for a project like this (Click Link below to Purchase Product and see more Information)

Domestic Hot Water Side

Quantity 4 to 6 - Ball Valves for Domestic Hot Water Side

Quantity 1 to 2 - Boiler Drain and Hose Bibs

Quantity 1 - Hot Water Recirculator Pumps

Quantity 1 - Pressure Relief Valves

Quantity 1 - All Gas Tankless Water Heaters

Quantity 1 - All Electric Bosch / Ariston Mini Tanks

Quantity 1 - Domestic Water Systems Expansion Tanks