Navien NaviCirc - User Manual

Installation and Operation
Manual
Certified to
NSF / ANSI 372
Note
This device is designed
and optimized for use with
Navien NPE-A/A2/S2 and
NPN Series water heaters
and NCB-H/NFC-H Series
combi boilers.
WARNING
All installations should be done only by a qualied expert and in
accordance with the provided instructions by the manufacturer.
Before starting the installation, please review these installation
and operating instructions carefully. The installation must
comply with national, state, and local plumbing codes and
regulations.

Navien NaviCirc Specifications

General

Category	Control Unit
Brand	Navien
Model	NaviCirc
Compatibility	Compatible with Navien tankless water heaters
Temperature Control	Maintains desired water temperature
Installation	Wall-mounted
Display	LED indicators
Power Source	Electrical
Functionality	Controls recirculation pump to minimize temperature fluctuations and reduce cold water waste

Summary

NaviCirc Product Information

Included Items and Specifications

Lists included components and details product specifications like flow rate, temperature, and dimensions.

Configuration and Connections

Explains the internal layout, connection points, and supply connection specifications.

NaviCirc Installation and Safety

General Installation Warnings

Highlights critical safety warnings and precautions for installing the NaviCirc unit.

Installation Steps

Provides step-by-step instructions for installation, including leak checks and mounting.

System Applications and Setup

NPE-A System Setup

Covers application guidelines, diagrams, and setup for the NPE-A system.

NPE-A2;S2 System Setup

Details setting external recirculation and pump connections for NPE-A2/S2 systems.

NPN System Setup and Parameters

Covers external pump wiring, parameter adjustments, and recirculation for NPN systems.

NCB-H;NFC-H System Setup

Details DHW operation and external recirculation settings for NCB-H and NFC-H boilers.

Troubleshooting and Warranty

Troubleshooting Common Issues

Provides a guide to identify and resolve common problems with the NaviCirc.

Warranty Information

Outlines the warranty period, coverage, and claim procedures for Navien products.