Bosch AQ 125BO LP User Manual

MODEL 125BO LP and 125BO NG - OUTDOOR MODEL
For exterior use only
Piezo Ignition
Suitable for heating potable water only
Not approved for space heating purposes
AQ 125 BO NG - Natural Gas
AQ 125 BO LP - Liquefied Petroleum (LP) Gas
8 716 473 147 US (05.10) JS
Warning: If the information in this manual is not
followed exactly, a fire or explosion may result
causing property damage, personal injury or death.
Do not store or use gasoline or other flammable
vapor and liquids in the vicinity of this or any other
appliance.
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.
In the Commonwealth of Massachusetts this
product must be installed by a licensed plumber or
gas fitter.
Upon completion of the installation, these
instructions should be handed to the user of the
appliance for future reference.
What to do if you smell gas
• Close gas valve.
• Do not try to light any appliance.
• Do not touch any electrical switch; do not use any
phone in your building.
• If you cannot reach your gas supplier, call the fire
department.
• Immediately call your gas supplier from a neighbor’s
phone. Follow the gas supplier’s instructions
• Installation and service must be performed by a
qualified installer, service agency or the gas supplier.

Bosch AQ 125BO LP Specifications

General

Fuel Type	Liquid Propane
Type	Tankless
Voltage	120V
Frequency	60 Hz
Water Pressure	30-150 PSI
Color	White

Summary

Appliance Details and Specifications

Product Features

Lists key features of the water heater for energy efficiency and operation.

AQ125 BO Technical Specifications

Provides detailed technical specifications, including capacity, output, and gas requirements.

Installation Instructions and Requirements

Heater Placement and Clearance Requirements

Specifies minimum clearances around the heater for safe installation.

Gas Piping and Connection Guide

Details on connecting the gas supply safely and correctly.

Electrical Connection Requirements

Guidelines for safely connecting the water heater to the electrical supply.

Operating the Water Heater

Lighting Instructions

Step-by-step guide to safely light the pilot burner and main burner.

Setting Water Temperature

How to adjust the hot water temperature using control knobs and slides.

Maintenance and Service Procedures

Maintenance Intervals

Recommended schedule for periodic maintenance tasks to ensure longevity.

Water Valve Service

Procedures for inspecting, lubricating, and replacing the water valve.

Pilot Assembly Service

Instructions for inspecting and cleaning the pilot assembly and orifice.

Troubleshooting Common Problems

Pilot Ignition Failures

Steps to resolve issues with the pilot burner failing to ignite or stay lit.

Burner Ignition Issues

Solutions for when the main burner doesn't light despite water flow.

Hot Water Temperature Fluctuations

Tips for addressing inconsistent hot water temperatures.