Appliance details

The maximum flue gas exhaust temperature on the GWH-635-ES is 437°F (225°C)

Venting

Exhaust

* Exhaust

* Exhaust

Combustion

Combustion

Vent pipe

Vent pipe

Options

vent

vent

vent

air pipe

air pipe

clearances

clearances

 

diameter

maximum

minimum

diameter

maximum

within an

within an

 

and

length

length

and material

length

unenclosed

enclosed

 

material

 

 

 

 

space

space

 

 

 

 

 

 

 

 

Room

3 inch

26 feet (8

3 feet

3 inch PVC,

26 feet (8

** See vent

** See vent

sealed

stainless

m) with one

 

aluminum or

m) with one

manufacturer's

manufacturer's

(twin pipe)

steel

elbow. Less

 

galvanized

elbow. Less

specifications

specifications

 

(AL29-4C)

2½ feet for

 

pipe

2½ feet for

 

 

 

sealed vent

each

 

 

each

 

 

 

pipe

additional

 

 

additional

 

 

 

 

90° elbow

 

 

90° elbow

 

 

Open

3 inch

26 feet (8

3 feet

See

See

** See vent

** See vent

combustion

stainless

m) with one

 

chapter 2.8

chapter 2.8

manufacturer's

manufacturer's

(single

steel

elbow. Less

 

 

 

specifications

specifications

pipe)

(AL29-4C)

2½ feet for

 

 

 

 

 

 

sealed vent

each

 

 

 

 

 

 

pipe

additional

 

 

 

 

 

 

 

90° elbow

 

 

 

 

 

 

 

 

 

 

 

 

 

Exhaust vent is always fan assisted. Installation of exhaust vent and combustion air piping may be run vertically or horizontally and in separate directions if required.

*A maximum of three 90 degree elbows are permitted in the total vent length. The total vent length must be reduced by 1 ¼ feet for every 45° elbow used in the vent system.

** Stainless steel (AL29-4C) vent pipe is manufacturerd by Z-Flex, Protech and Heat Fab. NOTE: clearance distances are variable depending if the vent pipe is installed in an enclosed or unenclosed space, the exhaust flue gas temperature and the orientation of the vent pipe.

Table 2

10

6 720 607 072

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Bosch Appliances GWH-635-ES manual Room