Navien NCB700-2S Plus 42K Installation & Operation Manual page 28

Condensing combi boiler
Table of Contents

Advertisement

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.
Hot Water
Supply
Check Valve
Cold Water Supply
Refer to the following before installing the NaviCirc.
Note
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.
28
Installing the System Piping
Pressure Relief Valve
Expansion
Vessel
Hot Water Return
Air Vent
NaviCirc

Advertisement

Table of Contents
loading

This manual is also suitable for:

Ncb700-3s 54k

Table of Contents