INSTALLATION AND OPERATING INSTRUCTIONS FOR AUTOMATIC

INSTANTANEOUS TYPE WATER HEATERS FOR USE WITH NATURAL AND

LIQUEFIED PETROLEUM GAS

MODEL 125HX LP and 125HX NG

(Flow Modulated with Electronic Ignition)

Suitable for heating potable water only

Not approved for space heating purposes

Intended for variable flow applications with steady cold water inlet temperatures.

6 720 606 562 (02.03) AL

WARNING: Improper installation, adjustment, alteration, service or maintenance can cause injury or property damage. Refer to this manual. For assistance or additional information consult a qualified installer, service agency or the gas supplier. Upon completion of the installation, these instructions should be handed to the user of the appliance for future reference.

In the Commonwealth of Massachusetts this product must be installed by a licensed plumber.

FEATURING: Automatic Variable Power Modulating Gas Valve and power generated Electronic Ignition

WARNING

If the information in this manual is not followed exactly, a fire or explosion may result causing property damage, personal injury or death.

FOR YOUR SAFETY

Do not store or use gasoline or other flammable, combustible or corrosive vapors and liquids in the vicinity of this or any other appliance.

WHAT TO DO IF YOU SMELL GAS

-Do not try to light any appliance.

-Do not touch any electrical switch; do not use any phone in your building.

-Immediately call your gas supplier from a neighbor’s phone. Follow the gas supplier’s instructions.

-If you cannot reach your gas supplier, call the fire department.

-Installation and service must be performed by a qualified installer, service agency or the gas supplier.

TABLE OF CONTENTS

Specifications

Page 2

Rules for safe operation

Page 4

Locating the Heater

Page 4

Combustion Air Requirements

Page 5

Mounting the Heater

Page 5

Venting the Heater

Page 6

Gas Connections

Page 7

Gas Piping

Page 8

Water Connections

Page 9

Safety before turning on the heater

Page 9

Operating instructions

Page 10

Setting water temperature

Page 10

Maintenance & Service

Page 11

Trouble Shooting

Page 11

Electrical Diagram

Page 13

Diagram of AquaStar

Page 14

Interior components diagram

Page 16

Parts List

Page 17

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Bosch Appliances 125HX LP specifications For Your Safety, What to do if YOU Smell GAS, Table of Contents

125HX LP specifications

The Bosch Appliances 125HX LP is an outstanding addition to any modern kitchen, exemplifying innovation and efficiency in kitchen technology. Renowned for their commitment to quality and performance, Bosch has crafted this model to meet the needs of both amateur and professional chefs.

One of the standout features of the 125HX LP is its powerful cooking capabilities. The model is equipped with a high-efficiency burner that provides intense heat for rapid cooking and precise temperature control. This is particularly beneficial when searing meats or preparing gourmet dishes, allowing users to achieve professional-grade results at home.

Another significant characteristic of the 125HX LP is its sleek and durable design. Constructed with premium materials, this appliance not only enhances the aesthetic appeal of your kitchen but also promises longevity. The stainless steel finish is not only attractive but also easy to clean, ensuring that the appliance maintains its polished look over time.

In terms of user-friendly technology, Bosch has integrated advanced features such as an intuitive control panel. This panel provides clear visibility and ease of access to various cooking settings while offering precise temperature adjustments. The 125HX LP also includes an automatic ignition system, which ensures that lighting the burners is both quick and safe, reducing the risk of accidents.

Safety is a major consideration in the design of the 125HX LP. The appliance features flame failure detection which automatically shuts off the gas supply if the flame goes out, providing peace of mind during use. Additionally, the cooking surface is designed to minimize the risk of burns, making it ideal for families.

The Bosch Appliances 125HX LP stands out with its commitment to energy efficiency. The model is designed to reduce energy consumption without compromising performance, making it an eco-friendly choice for the environmentally conscious consumer.

In summary, the Bosch Appliances 125HX LP combines power, design, and safety features to deliver a superior cooking experience. With its advanced technology and user-oriented features, this model is perfect for those who prioritize functionality and style in their kitchen appliances. Whether a casual cook or a culinary enthusiast, the Bosch 125HX LP is sure to meet and exceed expectations and stand the test of time in any kitchen environment.