28 Installing the System Piping
When the NaviCirc Is NOT Connected to a Tap
The following diagram shows an example of an installation location of the NaviCirc used with a NCB combi boiler and NOT connected to a
tap. The components in the dotted lines of the diagram must be installed to operate the NaviCirc.
Pressure Relief Valve
Hot Water Return
Hot Water
Supply
Cold Water Supply
Expansion
Vessel
Check Valve
Air Vent
NaviCirc
Note
Refer to the following before installing the NaviCirc.
●
To prevent backflow of water from the hot water return pipe, install a check valve on the cold water supply.
●
An expansion vessel must be installed and it can be moved depending on the installation environments. Install an expansion
vessel on the cold water supply pipe near the hot water return pipe.
●
If the hot water return pipe is installed above the boiler, install an air vent on the
COLD OUT/CLOSED
connection of the
NaviCirc and cover the
HOT OUT
connection with the stainless cap.
●
To install the pressure relief valve provided with the NaviCirc, refer to the pressure relief valve’s installation manual and install
it properly on the cold water supply pipe.
