Installation instructions

upwards towards termination ¼" for every foot of horizontal length, to prevent the pooling of condensate, and be supported at 4 foot intervals with overhead hangers.

Exception: horizontal run between last elbow and termination must pitch down to termination 1/4" per foot.

Note: For horizontal terminations, venting must terminate once it penetrates to the outside of the structure. There must be no sections of vent pipe exposed to the outdoors.

Note: Listed thimbles or collars are necessary where venting passes through wall and ceiling partitions. If the vent system passes through combustible areas where the vent clearance requirements cannot be maintained, it is permissible to chase straight sections of sealed 3 inch single wall vent through 4 inch (or greater) Type-B vent. The distance to combustibles using this chase technique is 1 inch1). Note: Type-B vent must never be used as the actual exhaust vent system for the appliance, as it is not gas tight and illegal for use with this appliance. This will create a serious health hazard and void the warranty.

3”

Z flex

Protech

Heat Fab

 

VENTING

 

 

 

 

 

 

 

 

 

 

 

3”

 

 

 

 

 

Horizontal

2SVSTB03

FSTB3

9390 TEE

 

Terminal

 

 

 

 

 

 

 

 

 

 

 

3” Vertical

2SVSRCF03

FSRC3

 

5300CI

 

terminator

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 3 Terminator Part Numbers

 

 

 

 

 

 

 

 

 

Fittings or Piping

Equivalent

 

 

 

 

 

 

 

 

 

feet

 

m

 

 

 

 

 

 

 

45 degree elbow

1.25

 

0.38

 

 

 

 

 

 

90 degree elbow

2.5

 

0.76

 

 

 

 

 

 

pipe per foot

1

 

0.30

 

 

 

 

 

 

 

Table 4 Friction Loss Equivalent in piping and fittings

For specific questions concerning vent material, speci- fications, usage or installation, please contact the vent manufacturer directly.

Company

Contact info

 

 

Z-flex

www.z-flex.com

 

800-654-5600

 

 

ProTech Industries

www.protechinfo.com

 

800-766-3473

 

 

Heat-Fab

www.heatfab.com

 

800-772-0739

 

 

Table 5 Vent manufacturers

1) in all cases, follow local codes.

Minimum exhaust vent length

Fig. 8

Maximum exhaust vent and combustion air inlet lengths

The maximum exhaust vent and combustion air inlet lengths with one elbow are ≥ 26ft.

Fig. 9 Maximum vent and combustion air lenghts

Note: reduce 2.5 ft for each 90° elbow used after the first one, reduce 1.25 ft for each 45° elbow, see table 2, page 8.

Refer to chapter 3.3.2, page 12 for condensate drain requirements.

Vent Safety System

The GWH 2400 ES will shut down if inadequate exhaust venting is detected or a lack of combustion air is provided to the unit; see troubleshooting section on page 35. See error code to confirm error, correct the problem and then reset the heater before operating.

6 720 608 782

9

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Bosch Appliances GWH 2400 ES NG, GWH 2400 ES LP manual Fittings or Piping Equivalent Feet, Vent Safety System
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GWH 2400 ES NG, GWH 2400 ES LP specifications

Bosch Appliances has established a reputation for delivering high-quality and innovative home solutions, and the Bosch GWH 2400 ES LP and GWH 2400 ES NG are no exceptions. These high-efficiency water heaters are designed to provide on-demand hot water, ensuring comfort and convenience for your home.

One of the standout features of the Bosch GWH 2400 ES LP (Liquid Propane) and GWH 2400 ES NG (Natural Gas) models is their compact, space-saving design. These tankless water heaters are engineered to fit in smaller spaces, making them an ideal choice for homes with limited installation areas. Despite their compact size, both models provides a powerful performance that meets the hot water needs for multiple fixtures simultaneously, such as showers, faucets, and washing machines.

These water heaters are equipped with advanced technology that enables precise temperature control. The Bosch GWH 2400 ES series utilizes a microprocessor-based control system that allows for consistent water heating, ensuring the water temperature remains stable even during high demand. The modulating gas valve further optimizes energy consumption, adjusting the flame intensity to meet the exact heating needs, thus enhancing efficiency.

In terms of safety, both the GWH 2400 ES LP and NG come with multiple safety features. These include a flame failure safeguard, overheating protection, and a built-in freeze protection system. Such features ensure both peace of mind and the longevity of the unit.

Installation is straightforward with these models, as they can be vented using standard venting materials, saving time and costs. Additionally, the units boast a low NOx emissions rating, making them environmentally friendly choices that help homeowners reduce their carbon footprint.

Maintenance is minimal, thanks to the corrosion-resistant heat exchanger which ensures durability and long service life under normal operating conditions. This factor, combined with Bosch’s renowned commitment to quality, makes these models a reliable investment for any household.

Whether you opt for the GWH 2400 ES LP or the GWH 2400 ES NG, you will experience the benefits of a powerful, efficient, and safe water heating solution tailored to your specific household needs. Bosch has truly combined technology, sustainability, and user comfort in these innovative models, solidifying their place as leaders in the home appliance market.
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