Index

Index

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

 

Warning

 

 

 

1

Warning

2

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Warning: If the information in this

2

Appliance details

4

 

 

 

 

 

 

 

manual is not followed exactly. A fire or

2.1

Features

4

 

 

 

 

explosion may result causing property

2.2

GWH-635-ES Specifications (Technical data)

4

 

 

 

 

 

 

 

 

damage, personal injury or death.

 

2.3

Dimensions and Minimum installation clearances

6

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2.4

General rules to follow for safe operation

7

 

 

 

 

 

 

 

 

 

2.5

Proper location for installing your heater

7

 

 

 

 

 

 

 

 

 

 

 

 

 

Warning:

Improper

installation,

2.6

Clearances

8

 

 

 

 

2.7

Mounting installation

8

 

 

 

 

adjustment,

alteration,

service

or

2.8

Combustion air requirements

8

 

 

 

 

maintenance can cause injury or

 

 

 

 

2.9

Venting

9

 

 

 

 

property damage. Refer to this manual.

2.9.1

Venting options

11

 

 

 

 

For assistance or additional information

2.10

Gas piping & connections

15

 

 

 

 

 

 

 

 

consult a qualified installer, service

2.11

Gas line sizing

17

 

 

 

 

2.12

Measuring gas pressure

17

 

 

 

 

agency or the gas supplier.

 

 

2.13

Water connections

18

 

 

 

 

Upon completion of the installation,

2.14

Electrical connections

19

 

 

 

 

these instructions should be handed to

2.15

Operating instructions

19

 

 

 

 

the user of

the appliance for future

2.16

For your safety read before operating your water heater

19

 

 

 

 

 

 

 

 

reference.

 

 

 

2.17

Lighting and operating instructions

19

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Featuring

 

 

 

 

3

Operation instructions

21

 

 

 

 

Electronic Ignition and Power Venting

 

3.1

Power

21

 

 

3.2

Temperature selection

21

 

For your safety

 

 

 

3.3

Use of remote control accessory

23

 

 

 

 

3.4

Operation

23

 

Do

not store

or use

gasoline or

other

flammable,

3.5

Reset button

23

 

combustible or

corrosive vapors and liquids in the

3.6

Program button

23

 

 

vicinity of this or any other appliance.

 

 

3.7

Locked condition

23

 

 

 

 

 

 

 

 

 

 

 

 

4

Maintenance and service

24

 

 

 

5

Troubleshooting

24

 

 

 

6

Electrical diagram

27

 

 

 

7

GWH-635-ES Functional scheme

28

 

 

 

8

Interior components diagram and parts list

29

8.1

Interior components

29

8.2

Components diagram

30

8.3

Parts list

31

9Special adjustment for measuring and adjusting CO2

 

levels

32

9.1

Adjusting the unit

32

9.1.1

CO2 measuring port

32

9.1.2

Selecting adjustment mode

32

 

 

 

10

Protecting the environment

34

 

 

 

11

Fifteen Year Limited Warranty

35

Warning: Carefully plan where you install the heater. Correct combustion air supply and flue pipe installation are very important. If a gas appliance is not installed correctly, fatal accidents can result from lack of air, carbon monoxide poisoning or fire.

Warning: Exhaust gas must be vented to outside using proper vent material suitable for category III vent systems and temperatures up to 480°F. Vent and combustion air connector piping must be sealed gas-tight to prevent possibility of flue gas spillage, carbon monoxide emissions and risk of fire, resulting in severe personal injury or death.

Warning: Place the heater in a location where water leaks will do NO DAMAGE to adjacent areas or lower floors.

2

6 720 607 072

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Bosch Appliances GWH-635-ES manual Index, Featuring, For your safety