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Bosch Therm 4300 Series User Manual

Bosch Therm 4300 Series
20 pages
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Installation and Users Instructions
Gas Instantaneous Water Heater
Therm 4300
T4300 11/14/18-2D
6 720 821 607 (2018/01) ZA
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Bosch Therm 4300 Series Specifications

General IconGeneral
Fuel TypeNatural Gas or Propane
TypeTankless
Temperature Range85°F - 140°F
DimensionsVaries by model
Ignition TypeElectronic
Vent TypeDirect Vent
Gas Connection1/2" NPT
Voltage120V

Summary

Key Symbols and Safety Instructions

Crucial Safety Precautions

Covers gas and burnt gas smells, fitting modifications, and general user safety advice.

Technical Characteristics and Dimensions

Appliance Dimensions and Clearances

Provides detailed measurements and minimum installation clearances in diagrams and tables.

Technical Data Specifications

Presents comprehensive data on output, consumption, gas supply, water system, and flue specifications.

Using the Water Heater

Power Adjustment Guide

Details how to adjust the appliance's power output to regulate water temperature and save energy.

Temperature and Flow Control

Explains how to adjust water temperature and flow rate using the rotary knob.

Installation by Qualified Technicians

Important Installation Information

Covers gas company consultation, shut-off taps, gas suitability, and pressure/flow checks.

Gas Connection Safety

Highlights dangers of non-compliance with gas connection standards and advises using original accessories.

Adjustments by Qualified Technicians

Burner Pressure Regulation

Guides on accessing the adjuster screw and connecting a manometer to regulate burner pressure.

Maintenance by Qualified Technicians

Periodic Maintenance Tasks

Lists functional checks, heat exchanger cleaning, burner inspection, and water filter replacement.

Flue Gas Safety Device

Explains the probe's function to prevent combustion gases entering the room and precautions if it trips.

Troubleshooting Common Problems

Problem/Cause/Solution Chart

A detailed chart listing common problems, their causes, and recommended solutions or technician actions.

Warranty Terms and Conditions

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