AquaStar 125HX LP, 125HX NG specifications Maintenance Table see, BBT North America

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MAINTENANCE TABLE see page 13

 

 

EVERY YEAR

EVERY 2 YEARS

EVERY 3-5 YEARS

 

 

 

 

 

 

LUBRICATE WATER VALVE

 

 

 

 

 

 

 

 

REBUILD WATER VALVE

 

 

 

 

 

 

 

 

INSPECT WATER FILTER SCREEN

 

 

 

 

 

 

 

 

INSPECT PILOT ASSEMBLY

 

 

 

 

 

 

 

 

INSPECT VENT ASSEMBLY

 

 

 

 

 

 

 

 

INSPECT MAIN BURNER

 

 

 

 

 

 

 

Replacement Parts available from:

BBT NORTH AMERICA

Bosch Group

Bosch Water Heating

340 Mad River Park

Waitsfield, VT 05673

Phone 800-642-3111

Fax (802) 496-6924 www.boschhotwater.com techsupport@boschhotwater.com

VULCANO Termodomésticos S.A.

Estrada de Cacia

3801 - 856 Aveiro - PORTUGAL

Recycled paper

￿ 2006 BBT NORTH AMERICA,

Waitsfield, VT all rights reserved

 

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Contents For Your Safety Table of ContentsWhat to do if YOU Smell GAS 720 606 Features Unpacking the 125 HX HeaterPrinciple of Operation Required Natural Gas Pressure at inletModel 125HX Proper Location for Installing Your Heater General Rules to Follow For Safe OperationMounting Installation Combustion AIR RequirementsClearances Venting Plasterboard, can cause failure of mountingVent pipe connection Masonry Chimneys Existing Interior Masonry ChimneyTile Lined Interior Masonry Chimney GAS Connections GAS Line Sizing6 Adaptor Used on High Altitude For Natural GAS For LP GASSource National Fuel Gas Code Nfpa 54, Ansi Z223.1 Water Connections Operating InstructionsSetting the Water Temperature Lighting and Operating InstructionsTo Turn OFF GAS to Appliance Maintenance and Service Trouble ShootingReview Maintenance Table on the Back of this Manual Not enlarge the orificeNo Spark AT the Pilot Ground water temperature is very warm Pilot Lights but Burners will not Come onMain Burners GO OUT During HOT Water USE Water is TOO HOTHOT Water Temperature Fluctuates / Unit Deactivated Diagram of 125 HX Interior Components Diagram and Parts List Interior Components Diagram Parts List 125 HX Flow chart of 125 HX Twelve Year Limited Warranty General720 606 720 606 Maintenance Table see BBT North America

125HX LP, 125HX NG specifications

The AquaStar 125HX NG and 125HX LP are highly efficient gas tankless water heaters designed to meet the demands of modern households. With their compact size and advanced technology, these units provide an endless supply of hot water while maintaining energy efficiency. Both models cater to natural gas and propane applications, making them versatile options for various installations.

One of the standout features of the AquaStar 125HX series is its ability to deliver a powerful output of up to 199,000 BTUs, ensuring that multiple hot water outlets can operate simultaneously without a drop in temperature. Users can enjoy the convenience of hot showers, laundry, and dishwashing all at once, making it an ideal choice for busy families or households with high hot water needs.

These models incorporate a sophisticated modulating gas valve that adjusts the gas flow based on the demand for hot water. This technology not only optimizes energy consumption but also contributes to extended unit life by minimizing wear and tear on the components. The AquaStar 125HX units also come equipped with a patented electronic ignition system, which eliminates the need for a standing pilot light and reduces gas consumption.

Furthermore, the AquaStar 125HX NG and 125HX LP feature a durable heat exchanger constructed from high-grade copper, which enhances thermal efficiency and prevents corrosion. This ensures a longer lifespan and increased reliability for homeowners. Additionally, the units are compact and wall-mounted, allowing for flexible installation in various spaces, including tight utility closets or outside walls.

Safety is also a top priority, with built-in overheat protection and a freeze protection feature that ensures the unit remains operational even in colder climates. The AquaStar 125HX series operates quietly, allowing users to enjoy the benefits of hot water without the disruptive noise commonly associated with traditional water heaters.

In summary, the AquaStar 125HX NG and 125HX LP are leading choices in the tankless water heater market, combining efficiency, reliability, and innovation. Their impressive output, advanced technologies, and compact design make them suitable for modern living, ensuring homeowners have access to hot water whenever they need it. With these features, AquaStar continues to set a high standard in water heating solutions.