Bradford-White Corp BWCV User Manual

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Bradford White
Page 10
Copper Brute II
Page 11
the vent pipe. Horizontal runs must slope downwards 
not less than 1⁄4 inch per foot (2 cm/m) from the unit to 
the vent terminal. Reference Table 1 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.
     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
Table 5. Required Horizontal Venting Material.
WARNING
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  Locating Vent & Combustion Air 
Terminals
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 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.
Important Note: 
Massachusetts Code Requirement.
For Sidewall Vented Appliances with Vent Ter-
minals Located Less Than 7 Feet above grade:
1.      Massachusetts Code requires that a CO Detector 
and Alarm, listed by an approved third party 
inspection agency to ANSI/UL 2034 and 
complying with NFPA720 (2005 Edition) be 
installed on each floor level in which there are 
bedroom(s), if there is not one already present. 
The location shall be in the living space outside 
the bedroom(s).
2.      An additional CO Detector and Alarm, as 
indicated above, shall be located in the room that 
houses the appliance and shall be powered by the 
same electrical supply as the appliance such that 
one service switch serves both the appliance and 
the CO detector. The CO detector shall have a 
battery backup.
3.      The vent terminal, and if applicable the air intake 
terminal, shall be the approved Laars terminals. 
A copy of this manual shall remain with the 
appliance at the completion of the installation.
4.      A metal or plastic identification plate shall be 
permanently mounted to the exterior of the 
building at a minimum height of eight (8) feet 
above grade directly in line with the exhaust vent 
terminal for the horizontally vented gas fueled 
heating appliance or equipment.  The sign shall 
read, in print size no less than one-half (1/2) inch 
in size, “GAS VENT DIRECTLY BELOW. 
KEEP CLEAR OF ALL OBSTRUCTIONS”.
For Sidewall Vented Appliances with Vent Ter-
minal Located More Than 7 Feet above grade:
Items 1, 2 and 3 above shall apply. Follow 
the Installation Instructions provided with the CO 
Detectors when installing them. For issues with the 
CO Detectors, contact the installing contractor.
2.3.2  Side Wall Combustion Air Terminal
The Bradford White side wall combustion air 
terminal (listed in Table 1) 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.)