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COPPER BRUTE II (500 - 2000)

length allowed is 50 feet (15.2m). Three elbows have

been calculated into the 50-foot (15.2m) linear run.

Subtract 10 allowable linear feet (3.0m) for every

additional elbow used (see Table 2). When fewer than

3 elbows are used, the maximum linear pipe length

allowed is still 50 feet (15.2m).

The connection for the intake air pipe is on the

lter box. The Copper Brute II appliances may have

venting and combustion air ducting attached to the top

or the back. They are shipped with the connections

at the top. For attaching either or both pipes to the

back, the mounting anges are reversible by removing

the mounting screws and orienting the anges in the

desired position. Replace the screws after positioning

anges. Run a bead of silicone around the collar and

slide the pipe over the collar. Secure with sheet metal

screws.

In addition to air needed for combustion, air

shall also be supplied for ventilation, including all air

required for comfort and proper working conditions

for personnel. The Copper Brute II loses less than 1

percent of its input rating to the room, but other heat

sources may be present.

2.2 Venting

2.2.1 Vent Categories

Depending upon desired Copper Brute II venting,

it may be considered a Category I or a Category III

appliance. In general, a vertical vent system will

be a Category I system. However, in rare instances,

a Copper Brute II’s vertical vent system may be

considered Category III. In the U.S., the National Fuel

Gas Code (ANSI Z223.1-Latest Edition), or in Canada

the CSA B149.1 (latest edition), denes a Category

I vent system, and includes rules and tables to size

these vent systems. If the Copper Brute II’s vertical

vent system does not satisfy the criteria for Category I

venting, it must be vented as a Category III system.

All Copper Brute II vent systems which

discharge horizontally (without the use of a power

venter) are considered Category III vent systems.

2.2.2 Category I Vent

When vented as a category I appliance, the

vent system must conform to the National Fuel Gas

Code (ANSI Z223.1-Latest Edition) in the U.S., or

in Canada, to CSA B149.1 (latest edition). The vent

system must be sized and installed for a Category I

Fan-Assisted Appliance.

If chimney height is greater than 25 feet, or

if multiple units are vented into the same vertical

vent, a barometric damper must be installed on each

appliance, such that the ue draft does not exceed

(negative) 0.1" w.c.

If using a power venter for any type of Category

I venting, the draft should be set between (negative)

0.01 and 0.10" w.c.

2.2.3 Common Venting Systems

Copper Brute II units are Category I fan-assisted

when vented vertically and adhering to all applicable

codes. Copper Brute II units are not allowed to be

vented into a common horizontal vent system, unless

a properly sized vent fan is used, and the common

vent system is properly designed by the vent fan

manufacturer or a qualied engineer. When common

venting Copper Brute II fan-assisted unit with other

appliances through one shared vertical duct called a

“common vent”, special care must be taken by the

installer to ensure safe operation. In the event that

the common vent is blocked, it is possible, especially

for fan-assisted devices, to vent backwards through

non-operating appliances sharing the vent, allowing

combustion products to inltrate occupied spaces.

If the appliances are allowed to operate in this

condition, serious injury or death may occur.

WARNING

Operation of appliances with a blocked common

vent may lead to serious injury or death. Safety

devices must be implemented to prevent blocked

common vent operation. If safe operation of all

appliances connected to a common vent cannot

be assured, including prevention of spillage of ue

gasses into living spaces, common venting should

not be applied, and appliances should each be

vented separately.

It is for this reason that, in addition to

following proper vent sizing, construction and safety

requirements from the National Fuel Gas Code,

ANSI Z223.1 or in Canada, from CSA B149.1 as

well as all applicable local codes, it is required that

installers provide some means to prevent operation

with a blocked common vent. It is suggested that a

blocked vent safety system be employed such that if

the switch from one appliance trips due to excessive

stack spill or backpressure indicating a blocked vent

condition, that all appliances attached to the vent be

locked out and prevented from operating. Note that

the Copper Brute II is equipped with a blocked vent

safety (pressure) switch, as shipped. However, this

safety switch has only been designed and tested to be

effective in installations where the Copper Brute II

is vented separately and NOT common vented with

other appliances. As an additional precaution, it is

recommended that a Carbon Monoxide (CO) alarm be

installed in all enclosed spaces containing combustion

TERM DESCRIPTION

Pipe Single-wall galvanized steel pipe, 24 gauge

minimum (either insulated or non-insulated)

Joint Permanent duct tape or aluminum tape

Sealing

Table 4. Required Combustion Air Piping Material.

1 2 3 4 5 6 7 8 9 10 11 12 13 14 ... 63 64

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Bradford White BWCH Operations Instructions Page 9

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