Venting

Vent pipe connection. WARNING: Do not reduce the vent pipe size. See Fig. 4 for high altitude installations The heater must be vented to the outside following all local ordinances and specifications for installing a gas appliance vent or chimney. The heater must be located as close as practicable to a vertically rising chimney or vent that has a listed vent cap at its termination point. The venting system must be designed and constructed so as to develop a positive flow adequate to remove flue gasses to the outdoors.

Consult the National Fuel Gas Code if the vent will have elbows or share venting with another natural draft appliance. The heater should never be common vented with a mechanically vented appliance. Single wall vent pipe is not recommended, if used consult the National Fuel Gas Code.

Horizontally venting to a sidewall vent terminator or a vertically constructed vent stack along an outside wall of a building is not permissible. A Powervent (Model AQ-1), with a proof-of-draft safety interlock device, is required and is available in order to sidewall vent. Contact your dealer. In the Commonwealth of Massachusetts: Powervented applications must utilize proof-of-draft safety interlock device.

VERTICAL GAS VENT: A 5 inch diameter gas vent constructed of double wall Type B gas vent is recommended. 6 inch is required in elevations greater than 2000 feet, see Fig. 4. Any gas vent section that is greater than 45 degrees from the vertical is considered horizontal. Horizontal sections must slope upwards at least ¼ inch for every foot of its horizontal length and be properly supported. Keep the horizontal section short and avoid too many elbows. The minimum vertical gas vent height allowed is 6 feet; horizontal vent connectors and elbows are not to be considered in the total gas vent height. All gas vent sections must be secured to each other with sheet metal screws and be properly supported.

The gas vent constructed of double wall Type B gas vent must terminate above the roof surface with a listed vent cap at a height that’s in accordance with Figure A or B and their table, provided they are at least 8 feet (2.4 m) from a vertical wall or similar obstruction. All other gas vents that are not able to terminate within the minimum specified height allowed must terminate not less than 2 feet (0.6 m) above the highest point where it’s passed through the roof and at least 2 feet (0.6 m) higher than any vertical wall or similar obstruction within 10 feet (3.1 m).

LISTED VENT CAP

LOWEST DISCHARGE OPENING

H (minimum) height from roof to lowest discharge opening

MINIMUM 6

FEET (1.8M)

LISTED VENT CAP

ROOF PITCH

IS X/12

MINIMUM 6

FEET (1.8M)

LISTED GAS VENT

ESTABLISH A ONE

FOOT RISE BEFORE

ANY ELBOWS

Figure A

Figure B

GAS VENT TERMINATIONS FOR LISTED VENT CAPS

Roof pitch	H (minimum) feet	meters
Flat to 6/12	1.0	0.30
6/12 to 7/12	1.25	0.38
Over 7/12 to 8/12	1.5	0.46
Over 8/12 to 9/12	2.0	0.61
Over 9/12 to 10/12	2.5	0.76
Over 10/12 to 11/12	3.25	0.99
Over 11/12 to 12/12	4.0	1.22
Over 12/12 to 14/12	5.0	1.52
Over 14/12 to 16/12	6.0	1.83
Over 16/12 to 18/12	7.0	2.13
Over 18/12 to 20/12	7.5	2.27
Over 20/12 to 21/12	8.0	2.44

6 720 607 030

125B NG, 125B LP specifications

Bosch Appliances has long been a trusted name in kitchen technology, and their 125B LP and 125B NG models are no exception. These gas appliances combine advanced features with top-notch engineering, ensuring excellent performance and reliability in the kitchen. Designed for both professionals and home cooks, the 125B series caters to diverse culinary needs.

One of the main features of the Bosch 125B model is its dual fuel capability. The LP (liquefied petroleum) and NG (natural gas) options make it flexible for various installations and preferences. This versatility ensures that users can easily find the right setup for their kitchens, whether they're using propane or natural gas.

The burners in the 125B series are designed with precision in mind. Each model features high-efficiency burners that deliver a maximum output of 15,000 BTUs. This level of power enables rapid heating for boiling, frying, or searing, while the low-simmer setting allows for gentle cooking tasks such as sauces and delicate soups. The continuous cast iron grates offer both durability and stability, allowing for easy movement of pots and pans across the cooking surface.

An additional technological highlight of the Bosch 125B series is the flame failure safety device. This essential safety feature automatically cuts off the gas supply if the flame goes out, providing peace of mind for users. The inclusion of electronic ignition also enhances convenience, making it easy to start the burners with just a turn of the knob.

The sleek design of the Bosch 125B appliances blends seamlessly into any kitchen decor. With a professional stainless steel finish, they add an element of sophistication while being easy to clean and maintain. The intuitive control knobs are ergonomically designed, ensuring smooth and precise adjustments to the flame.

In terms of installation, both the 125B LP and NG models are designed for straightforward setup, making them suitable for renovation projects or new builds. Bosch Appliances also offers a range of accessories to further enhance the functionality and aesthetic of the kitchen setup.

Overall, the Bosch 125B LP and 125B NG appliances represent a perfect combination of efficiency, safety, and style. With their robust features and advanced technology, they promise to elevate the cooking experience for anyone who values quality and performance in the kitchen. Whether you're a novice home cook or a seasoned chef, these models are sure to meet and exceed your culinary expectations.

Bosch Appliances 125B LP, 125B NG Venting, Establish a ONE Foot Rise Before ANY Elbows

Models: 125B NG 125B LP

VENTING