Manuals / Bosch Appliances / Household Appliance / Water Heater

Bosch Appliances 125B NGL Introduction, Pilot Light will not Light, No gas to the AquaStar

Models: 125B NGL 125B LPL

1 16
Download 16 pages 13 Kb
Page 10
Image 10

toward you and lift up and out. THE FOLLOWING OPERATIONS SHOULD BE PERFORMED BY A QUALIFIED SERVICE PERSON:

Vent System: Should be checked annually. Clean and repair as needed.

Water Valve (Part # 8707002478): The water valve on this heater should be serviced periodically. Lubricate component #25 on page 14 with a small amount of silicon, faucet or lithium grease every two years to keep its o rings fresh and pushrod sliding smoothly. Every 3-5 years replace components #25 and #27 on page 14. The frequency will depend on the mineral content of the water and conditions of use or whenever signs of corrosion appear at the gas and water valve joint. Periodically check that the water inlet filter (#32 on page 14) is clean as well.

Pilot Flame: The pilot flame should burn with a clean sharp blue flame and should resemble the diagram in Fig 8. If the flame is yellow, or if the pilot knob has to remain depressed for a long time in order to keep the pilot lighted, the pilot burner and or the pilot burner orifice may need to be cleaned (NG), the orifice may need to be replaced(LP), and or the air screen may need cleaning. The pilot flame should envelop approximately 10 mm (3/8") of the tip of the thermocouple. If it is too small, the pilot burner must be cleaned. To obtain a spark, the position of the Piezo igniter electrode should be approximately 3 mm (1/8") from the pilot burner tip.

3mm

Correct gap between pilot burner tip and piezo electrode tip

Piezo Electrode

Air screen filter

10mm 3/8”

 

Thermocouple

 

Piezo

Fig. 8 - Characteristic Pilot Flame

Electrode

 

To clean the pilot burner and/ or the pilot orifice : Turn off the gas at the unit. Remove the cover of the heater. To do so, remove incandescent particle tray and unscrew the central screw located at the bottom of the front cover. Pull main cover out toward you and lift up and out. Pull the air screen off, wash it and blow any lint off (See Fig 9). The pilot orifices should also be cleaned or replaced. Do not enlarge the orifice. Do not use any wire or sharp object to clean orifices. Natural gas orifices are large enough that you can usually clean them by blowing through them. LP orifices, on the other hand, are too small to clean and should be replaced. See #3 in Trouble Shooting Section.

To access the pilot orifice, remove 2 screws holding pilot assembly in place. Then loosen compression fittings to expose pilot orifice.

AIR SCREEN

PILOT ORIFICE

Fig. 9 - Pilot burner with air screen/ pilot orifice

Main Burner Flames: The main burner flames should be blue, with a more intense blue cone in the center core. Yellow flames could be a sign of wrong size gas orifices or dirty burners, or a blockage on the heat exchangers fins. If some burners have yellow flames while others have good flames, it is likely that dust, lint or spider webs have partially clogged the burner venturis. To clean the burners contact a gas service person

Mineral Scale Build-up: The AquaStars heater, when operated at lower temperatures settings, do not accumulate mineral build-up. If however, the heater is used at the higher temperature settings and the water has a high mineral content, periodic descaling may be necessary. The heating coils should be flushed with a descaling solution. Consult your dealer or Controlled Energy for instructions.

TROUBLE SHOOTING (see maintenance table)

Introduction

The AquaStar 125 BL burners are activated by a water flow valve. Numerous water related problems can cause this water valve to malfunction such as: Insufficient water flow volume to activate the burners at its minimum flow requirement; Dirt in the water flow valve causing it to malfunction; Sediment build-up in faucet aerators, or shower heads; Uneven pressures between cold and hot. (with single lever faucets) Plumbing cross overs. These water flow related problems can cause the heater to deliver less than its full output, or to fail to ignite or to shut down completely. Problems are stated in upper case, bold face. Most common causes for the problems follow in order of likelihood. The suggested solutions require that the cover be taken off. To do this, remove incandescent particle tray and unscrew the central screw located at the bottom of the front cover. Pull main cover out toward you and lift up and out.

PILOT LIGHT WILL NOT LIGHT

1. No gas to the AquaStar

A.Gas cock on gas line may not be open.

B.Gas valve button has not been pushed in on “PILOT” position.

10

Page 9 Page 11
Page 10
Image 10
Bosch Appliances 125B NGL, 125B LPL operating instructions Introduction, Pilot Light will not Light, No gas to the AquaStar
Page 9 Page 11

125B NGL, 125B LPL specifications

Bosch Appliances has established itself as a leader in home innovation, offering cutting-edge products designed to enhance everyday living. Among their notable offerings are the Bosch 125B LPL and 125B NGL models, both engineered to meet the needs of modern households.

The Bosch 125B LPL features a sleek design, making it a stylish addition to any kitchen. It operates with a low noise level, allowing for an unobtrusive cooking experience. One of its standout features is the powerful performance it delivers, thanks to its innovative cooking technologies. The induction cooking system ensures rapid heating and precise temperature control, allowing users to cook their meals to perfection. The residual heat indicator is another excellent feature, ensuring safety by alerting users to hot surfaces.

On the other hand, the Bosch 125B NGL focuses on providing versatility and convenience in the kitchen. This model is equipped with advanced gas cooking technology that offers instant heat and adjustable flame control. This ensures that home chefs can simmer, sear, and sauté with precision. The integrated safety features, including a flame failure device, provide peace of mind while cooking.

Both models embody Bosch’s commitment to energy efficiency. They are designed to minimize energy consumption while maximizing performance, which is a significant advantage for environmentally conscious consumers. Additionally, the interface on both appliances is user-friendly, featuring intuitive controls that make it easy to navigate settings and cooking modes.

Bosch has also incorporated smart technology into these models, allowing users to connect their appliances with home networks for added convenience. This can include features such as remote monitoring and control, enabling homeowners to manage their cooking seamlessly.

In terms of durability, both the 125B LPL and the 125B NGL are built with high-quality materials that ensure longevity and reliability. Bosch’s reputation for fine craftsmanship is evident in every aspect, from their robust construction to the aesthetic details.

In conclusion, the Bosch Appliances 125B LPL and 125B NGL models represent the pinnacle of modern kitchen technology. With their powerful performance, energy efficiency, and user-centric features, they are perfect for those who appreciate gourmet cooking as well as everyday meal preparation. Bosch continues to redefine the culinary experience, making cooking not just a task, but an enjoyable journey.