Interior components diagram and parts list

8.3Parts list

Item

Description

Reference

 

 

 

 

GROUP 1

 

 

 

 

1

Front cover

8 705 431 223

2

Cover screw no. 10 x 22mm

2 910 612 435

3

Trade mark badge

8 701 103 140

4

Gasket

8 704 701 077

5

Support set

8 708 006 130

6

Grommet set

8 710 203 039

7

Deflector plate

8 700 100 376

8

Screw M4,8 x 9,5mm

8 703 403 012

9

Angle bracket

8 708 003 218

10

Flue gas accessory

8 705 504 149

11

Washer

8 716 140 939

12

Screw 8x3/8" philips

2 910 612 424

13

Washer

8 711 004 022

14

Throttle disc set (GWH345ESR)

8 709 918 779

14

Throttle disc set (GWH450ESR NG)

8 709 918 780

14

Throttle disc set (GWH450ESR LP)

8 709 918 782

15

Combustion air accessory

8 705 504 148

16

Clip

8 701 201 032

17

Holding bracket (GWH345ESR)

8 701 302 099

17

Holding bracket (GWH450ESR)

8 701 302 235

18

Cover

8 701 302 225

19

Mounting bracket with screws

8 708 003 143

 

GROUP 2

 

 

 

 

1

Heat exchanger (GWH345ESR)

8 705 406 323

1

Heat exchanger (GWH450ESR)

8 705 406 329

2

Temperature limiter/ECO 104°C

8 707 206 204

3

Washer 25OD X 21ID X 2MM

8 700 103 125

4

Locknut G 1/2"

8 713 300 018

5

Fiber washer 18.6x13.5x1.5

8 710 103 045

6

Cold water pipe

8 700 703 163

7

O-ring

8 700 205 135

8

Temperature sensor

8 700 400 015

9

Connection bush

8 703 305 326

10

Wireform spring

8 714 606 002

11

Mounting bracket

8 701 309 158

12

Screw

8 743 401 019

13

Cage nut

8 703 309 001

14

Screw M 5.0X20 DIN 7985

2 910 642 162

15

Clip

8 716 102 607

 

GROUP 3

 

 

 

 

1

Main burner LP (GWH345ESR)

8 708 120 625

1

Main burner NG (GWH345ESR)

8 708 120 624

1

Main burner LP (GWH450ESR)

8 708 120 623

1

Main burner NG (GWH450ESR)

8 708 120 622

Table 17

Item

Description

Reference

 

 

 

2

Screw

8 703 404 089

3

Screw

8 703 401 069

4

Screw M4 x 12 phillips

2 910 952 122

9

Washer

8 701 003 010

10

Angle bracket

8 711 304 287

11

Screw

2 910 619 409

12

Washer 1"

8 710 103 060

13

Ignition electrode

8 708 107 008

14

Screw m3.5x6 phillips steel

2 910 642 082

15

Flame sensor

8 708 107 009

 

GROUP 4

 

 

 

 

1

Gas valve

8 707 021 333

2

Connector

8 705 202 126

3

Washer- fibre 24OD X 16ID X 2MM

8 700 103 014

4

Connection bush

8 703 305 325

5

O-ring

8 700 205 144

6

Screw

2 912 601 120

 

GROUP 5

 

 

 

 

1

Front cover

8 707 207 219

2

Selector knobs

8 702 000 309

3

Cover

8 705 400 069

4

Screw

8 703 403 074

5

Cover

8 705 400 056

6

Printed circuit board

8 708 300 193

7

Fuse T3, 15A

1 904 522 745

8

Centrifugal blower

8 707 204 061

9

Differential pressure line

8 703 305 302

10

Set of hose

8 700 703 049

11

Pressure differential switch

8 707 406 007

 

(GWH345ESR)

 

 

 

 

11

Pressure differential switch

8 707 406 074

 

(GWH450ESR)

 

 

 

 

12

Screw tapping no6 x 9.5

2 910 612 410

13

Cable

8 704 401 311

14

Cable

8 704 401 312

15

Set of cables

8 704 401 309

16

Cable

8 704 401 308

17

Set of cables

8 704 401 310

18

Power supply cord

8 704 401 267

19

PCB wire harness

8 704 401 295

20

Junction box

8 701 103 142

Table 17

6 720 607 909

37

Page 36 Page 38
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Image 37
Bosch Appliances GWH-345/450-ESR-N, GWH-345/450-ESR-L manual Parts list, Description Reference
Page 36 Page 38

GWH-345/450-ESR-L, GWH-345/450-ESR-N specifications

Bosch Appliances has long been recognized for its innovative and high-quality home appliances, and the GWH-345/450-ESR-N and GWH-345/450-ESR-L water heaters are no exception. These models offer exceptional efficiency and reliability, making them ideal choices for modern households seeking dependable water heating solutions.

One of the standout features of the GWH-345/450-ESR series is their impressive energy efficiency. Engineered with cutting-edge technology, these units operate with high thermal efficiency ratings. This not only translates to reduced energy bills for consumers but also supports environmentally friendly practices by minimizing energy consumption. The tankless design eliminates the need for a storage tank, providing hot water on demand while ensuring that no energy is wasted in heating and re-heating stored water.

Both models come equipped with advanced safety features. The integrated combustion management system ensures precise control of the combustion process, which not only enhances heating efficiency but also reduces the risk of overheating. Additionally, the built-in safety mechanisms, such as flame failure protection and overheat protection, provide consumers with peace of mind knowing their home is protected.

These Bosch water heaters also feature a user-friendly digital display that allows for easy temperature adjustment and monitoring. The intuitive interface enables users to set their desired water temperature with precision, ensuring comfort and convenience. Furthermore, these models are designed for quiet operation, making them suitable for installation in various locations within the home without causing disruptive noise.

The construction of the GWH-345/450-ESR-N and GWH-345/450-ESR-L models is robust, featuring high-quality materials that ensure durability and longevity. The compact and sleek design allows for flexible installation options, even in smaller spaces. With a variety of venting options available, including direct vent and power vent configurations, these heaters can fit seamlessly into different home layouts.

In summary, Bosch Appliances GWH-345/450-ESR-N and GWH-345/450-ESR-L models represent the pinnacle of modern water heating technology. With their energy-efficient performance, advanced safety features, user-friendly controls, and durable construction, these water heaters are designed to meet the demands of today’s homes while delivering reliable hot water whenever needed. These innovative appliances reinforce Bosch's reputation as a leader in home heating solutions, ensuring that customers can enjoy hot water with confidence and peace of mind.
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