Bradford-White Corp BWCH Manual De Usuario

Page 11

appliances. If assistance is required in determining 
how a blocked vent safety system should be connected 
to a Bradford White product, please call Applications 

Engineering at the Rochester phone number listed on 

back cover of this manual.

Refer to the installation and operating 

instructions on all appliances to be common vented 
for instructions, warnings, restrictions and safety 

requirements. If safe operation of all appliances 
connected to a common vent cannot be assured, 

including prevention of spillage of flue gasses into 
living spaces, common venting should not be applied, 

and appliances should each be vented separately.

2.2.4  Category III Vent
When the Copper Brute II is vented with 

horizontal discharge, it must be installed per 
this installation manual and the venting system 

manufacturer’s installation instructions. The vent 
system must be sealed stainless steel, per 

Table 5

.

Route the vent pipe to the heater as directly as 

possible. Seal all joints and provide adequate hangers 
as required in the venting system manufacturer’s 

Installation Instructions. Horizontal portions of the 
venting system must be supported to prevent sagging 
and may not have any low sections that could trap 

condensate. The unit must not support the weight of 

the vent pipe. Horizontal runs must slope downwards 

not less than ¼ inch per foot (2 cm/m) from the unit to 

the vent terminal. Reference 

Table 2

 for the size of the 

Category III vent system. Up to three elbows can be 

used with 50 linear feet (15.2m) of pipe. Subtract 10 

allowable linear feet (3.0m) for every additional elbow 

used.

The outdoor vent terminal gets hot. Unit must be 

installed in such a way as to reduce the risk of 

burns from contact with the vent terminal.

2.3.1  Side Wall Vent Terminal
The appropriate Bradford White side wall vent 

hood must be used, and is listed in the installation and 

operation manual.  The terminal provides a means of 
installing the vent piping through the building wall, 

and must be located in accordance with ANSI Z223.1/

NFPA 54 and applicable local codes.  In Canada, the 

installation must be in accordance with CSA B149.1 or 

.2 and local applicable codes.  Consider the following 
when installing the terminal:

1. 

Figure 3

 shows the requirements for mechanical 

vent terminal clearances for the U.S. and Canada.

2.  Vent terminals for condensing appliances or 

appliances with condensing vents are not 
permitted to terminate above a public walkway, 
or over an area where condensate or vapor could 

create a nuisance or hazard.

3.  Locate the vent terminal so that vent gases cannot 

be drawn into air conditioning system inlets.

4.  Locate the vent terminal so that vent gases cannot 

enter the building through doors, windows, 

gravity inlets or other openings.  Whenever 
possible, locations under windows or near doors 

should be avoided.

5.  Locate the vent terminal so that it cannot be 

blocked by snow.  The installer may determine 
that a vent terminal must be higher than the 
minimum shown in codes, depending upon local 

conditions.

6.  Locate the terminal so the vent exhaust does 

not settle on building surfaces or other nearby 

objects.  Vent products may damage such 

surfaces or objects.

7.  If the boiler or water heater uses ducted 

combustion air from an intake terminal located 
on the same wall, locate the vent terminal at least 

3 feet (0.9m) horizontally from the combustion 
air terminal, and locate the vent terminal at least 

1 foot (0.3m) above the combustion air terminal.

2.3.2  Side Wall Combustion Air Terminal
The Bradford White side wall combustion air 

terminal (listed in 

Table 2

) must be used when the 

unit takes its combustion air through a duct from a 

side wall. Consider the following when installing the 
terminal:

1.  Do not locate the air inlet terminal near a source 

of corrosive chemical fumes (e.g., cleaning fluid, 

chlorinated compounds, etc.)

2.  Locate the terminal so that it will not be subject 

to damage by accident or vandalism.

3.  Locate the combustion air terminal so that it 

cannot be blocked by snow. The National Fuel 

Gas Code requires that it be at least 12 inches (30 
cm) above grade, but the installer may determine 
it should be higher, depending upon local 

conditions.

4.  If the Copper Brute II is side-wall vented to the 

same wall, locate the vent terminal at least 3 

feet (0.9m) horizontally from the combustion air 
terminal, and locate the vent terminal at least 1 

foot (0.3m) above the combustion air terminal 
(

see Figure 3

).

 

TERM 

DESCRIPTION 

 

Pipe 

Must comply with UL Standard 1738 

 

 

such as Type 29-4C Stainless Steel 

 

 

(either insulated or non-insulated).

 

Joint 

Follow vent manufacturer’s instructions

   Sealing