Bosch WR 325 -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 325 -8 K..G Series Specifications

General

Brand	Bosch
Model	WR 325 -8 K..G Series
Category	Water Heater
Language	English

Summary

Description of Appliances

Equipment

Lists components of the multipoint gas water heater, including sensor electrode, hydropower ignition, and automatic power adaption.

Type Overview

Details the model variants (WR 250, 325, 400) and their specific codes and features, such as gas code numbers.

Connecting Measurements

Provides dimensions (A, B, C, D, E, F, G, H) and gas connection types (NG, LPG) for different appliance models.

Constructional Details

Illustrates and lists the internal components of the water heater, such as heat exchanger, gas valve assembly, and ignition unit.

Installation

General Remarks

Highlights the need to comply with local by-laws and regulations for gas-heated appliances.

Location

Specifies requirements for appliance installation site, emphasizing frost protection, ventilation, and avoiding corrosive substances.

Connecting Appliance

Instructions on how to securely mount the heater to the wall using provided brackets.

Water Supply

Details for connecting water pipes, specifying valve types (Gate, Full Flow Ball) and prohibiting non-return valves.

Gas connection

Guidance on gas supply pipe sizing according to AS5601, noting that inadequate sizing may void the warranty.

Flue

Recommends using approved single or twin skin flue in accordance with AS5601.

Commissioning

Steps for purging gas piping of air and restarting the ignition cycle if the pilot burner fails.

HDG Functioning

Explanation of the Hydropower Generator (HDG) within the water circuit and its role in supplying electricity.

Servicing

Setting Appliance

Notes factory settings for LPG and Natural gas heaters and the importance of matching appliance to available gas type.

Gas adjustments

Procedure for adjusting gas burner pressure for maximum output, including safety checks and manometer usage.

Conversion to Other Gases

Instructions for qualified fitters to convert the appliance to different gas types using manufacturer-supplied kits.

Maintenance

Recommends annual inspection, cleaning, and descaling, emphasizing servicing by authorized personnel only.

Fault Finding

A table outlining common problems, their causes, and solutions for appliance malfunctions.

Operating Guide - Quick Reference

Starting and shutting off the appliance

Instructions on how to switch the appliance on and off using the on/off switch.

Output control

Explanation of how to adjust the appliance's output level.

Temperature regulation

Details on how to adjust water temperature by turning the control clockwise or anti-clockwise.