VALVES FOR HOT WATER CIRCULATION INSTALLATIONS
In a tap water installation with hot water circulation, hot water can reach any consumption point immediately, coming e.g. from a tank, after which it returns to the loop—and it concerns water systems with long transport distances too. In this system, ESBE VTA320, 520 thermostatic mixing valves work exceptionally well. (These are also available in almost lead-free versions.) The VTA520, VTA530 or VTS520 series are other good option, where the VTS is dedicated to the increasingly popular installations with solar panels.
Fig. 1 Schematic diagram of an installation with a hot water circuit equipped with an additional circulation pump and a thermostatic mixing valve—VTA320 or VTA520, or VTA530, or VTS520
ESBE’s assortment also features solutions which have been specially designed for hot water circulation systems: the VTR300 and VTR500 sets. Each set consists of thermostatic mixing valves and check valves. Circulation sets are compact and easy to install.
Fig. 2 Schematic diagram of an installation with a hot water circuit equipped with an additional circulation pump and a circulation set—VTR300 or VTR500
The thermostatic mixing valves and circulation sets from ESBE protect users from Legionella as well as from burns. The bacteria are neutralised above 60°C, while anti scald protection means that as soon as cold water supply fails, hot water supply is also cut off.
Hot water circulation systems are most widely used in commercial buildings. The same solution can be sometimes found in single- or multi-family housing too, where instant access to hot water is required.