Bosch WR 400 -8 K..G Series - User Manual

with Hydropower Ignition
Gas Instantaneous Water Heaters
WR 250 -8 K..G..
WR 325 -8 K..G..
WR 400 -8 K..G..
Installation and Operating Instructions
-
THE APPLIANCE MAY ONLY BE INSTALLED BY AN AUTHORISED PERSON.
- Perfect functioning of the appliance is guaranteed only if this specification and the operating instructions are followed.
- The customer shall be provided with these installation instructions.
- The fitter shall explain the function and operation of the appliance to the customer.
- Servicing may only be carried out by authorised personnel.
- Installation in a marine environment should be avoided.
- Install in accordance with AS5601, AS/NZS3500.4.2, NZS5261 and all local building, water and gas fitting regulations.
- Not suitable for pool or SPA application.
- Failure to install the appliance in accordance with these installation instructions may void warranty.
6 720 606 692 (02.05) JS
Approved for indoor installation only.
For your safety
If you smell gas:
1. Close gas isolating cock
2. Open windows
3. Do not actuate any electrical switches
4. Extinguish naked flames
5. Contact gas authorities immediately
Do not store or use flammable materials or liquids
near the appliance.
Do not place articles on or against this appliance.

Bosch WR 400 -8 K..G Series Specifications

General

Brand	Bosch
Model	WR 400 -8 K..G Series
Category	Water Heater
Language	English

Summary

Bosch Gas Water Heater Installation and Operation

Product Identification

Overview of Bosch Gas Instantaneous Water Heaters models WR 250, WR 325, WR 400.

Critical Safety Instructions

Essential safety guidelines for operation, gas leaks, and fire prevention.

Key Installation Requirements

Mandatory installation rules, authorized personnel, and compliance standards.

Appliance Dimensions and Construction

Connecting Measurements Guide

Table of physical dimensions and connection points for various WR models.

Constructional Components Overview

Diagrams and labels identifying the internal parts of the water heater.

Electrical Wiring and Technical Specifications

Wiring Diagram Analysis

Electrical schematic illustrating component connections and system layout.

Detailed Technical Data

Comprehensive data on ratings, gas/water consumption, and pressures.

Installation Procedures and Guidelines

General Installation and Location Advice

Regulations, by-laws, ventilation, and suitable location for installation.

Water and Gas Connections

Steps for connecting water supply, gas lines, and flue.

Commissioning and HDG Function

Process of initial setup and explanation of the Hydropower Generator.

Servicing, Maintenance, and Conversion

Gas Type Conversion Procedure

Instructions for converting the appliance for different gas types.

Routine Maintenance Tasks

Cleaning and descaling of heat exchanger, burner, and pilot burner.

Troubleshooting Common Issues

Fault Finding and Solutions

A guide to diagnosing and resolving common appliance problems.

Operating Guide and Quick Reference

Appliance Start-up and Shutdown

How to turn the water heater on and off using the main switch.

Adjusting Output and Temperature

Instructions for controlling heat output and water temperature settings.

Warranty Information and Terms

Warranty Details and Purchaser Rights

Explanation of warranty coverage, exclusions, and statutory consumer rights.