Water connections, Water quality | Bosch Appliances GWH 2400 ES LP

Installation instructions

3.9Water connections

Warning: This heater is not approved for preheated water applications.

See chapter 3.11 for approved recirculating application.

BWhen facing the heater, the ¾” cold connection is on the bottom right and the hot connection is on the bottom left. Centrally locating the water heater is recommended to keep hot water distribution times even throughout the structure.

COLD

HOT

Fig. 28

BThe use of unions when connecting both water pipes to the inlet and outlet connections is required. This will facilitate any necessary servicing.

BPlastic or PEX type plumbing line materials are not suitable for connecting directly to the water heater.

BAlthough water piping throughout the building may be other than copper, we recommend that copper or suitably rated stainless steel flex line piping be used for the water connections for 1.5’ on either side of the water heater (follow local codes if more stringent).

BNever sweat any piping directly to or beneath the water connections, as damage can occur to the internal water valve from heating of the pipe.

BKeep water inlet and outlet pipes to no less than ¾" (19.05mm) diameter to allow the full flow capacity.

B If the cold and hot connections to the heater are reversed, the heater will not function. Be certain there are no loose particles or dirt in the piping. Blow out or flush the lines before connecting to the water heater.

BFull port shutoff valves should be installed on both the cold water supply and hot water outlet lines to facilitate servicing the heater (see Fig. 29).

BFor installation on a private well system with the use of a pressure tank, the lowest pressure range setting recommended is 40-60 psi (2.75 and 4.15 bar).

3.10 Water quality

Water quality can have an impact on appliance longevity and may not be covered under the manufacturer's warranty.

For water analysis data call your local water department, or if on a well, have well water analyzed periodically. If water quality exceeds one or more of the values specified below, Bosch recommends installing a water conditioner or softener.

Description	Max. Levels

pH	pH	6.5 - 8.5

TDS (total Dissolved	mg/l or ppm	500
Solids)	mg/l or ppm	500
Solids)

Total hardness	mg/l or ppm	100
Total hardness	mg/l or ppm	(6 grains)
		(6 grains)

Aluminum	mg/l or ppm	2.0

Chlorides	mg/l or ppm	250

Copper	mg/l or ppm	1.0

Iron	mg/l or ppm	0.3

Manganese	mg/l or ppm	0.05

Zinc	mg/l or ppm	5.0

Table 9

20	6 720 608 782

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.