6.5 Domestic water system

If there is a domestic water system, connect it in accordance with the relevant plan.

Equip the domestic water system with a safety valve (max. 10 bar) and install it in the inbound cold water pipe as shown in the diagram. It is advisable to lead the safety valve overflow pipe to the nearest floor drain. Install the overflow pipe in such a way that water is able to flow out of the overflow pipe unobstructed.

The safety valve for domestic hot water may leak almost constantly when domestic hot water is no longer consumed in large volumes. The overflow is due to the heat expansion of cold water and pressure shocks. The safety valve can be prevented from leaking by installing an expansion tank in the domestic water network to level out pressure fluctuations and prevent pressure shocks.