Bradford-White Corp BWCH Manual De Usuario

Page 20

Hot water piping should be supported by suitable 

hangers or floor stands. Do not support piping with 

this appliance. Due to expansion and contraction of 
copper pipe, consideration should be given to the type 

of hangers used. Rigid hangers may transmit noise 
through the system resulting from the piping sliding in 

the hangers. It is recommended that padding be used 

when rigid hangers are installed.

The Copper Brute II can be used with several 

different types of readily available storage tanks. A 
pump draws water from the storage tank and pumps 

the water through the heater and back into the tank. 

Pump-mounted units have a circulating pump built 

into the water heater. The pumps used are sized for the 

headloss through the heater, plus 30 feet (9.1m) of full-
sized piping (same size as boiler outlet) and a normal 

number of fittings. Pumps used on pump-mounted unit 

are sized for soft/normal or hard water, so make sure 
a pump-mounted unit matches the water quality of the 

installation.

Pipe the outlet from the heater’s relief valve 

such that any discharge from the relief valve will be 
conducted to a suitable place for disposal when relief 

occurs. Do not reduce line size or install any valves in 

this line. The line must be installed to allow complete 

drainage of both the valve and the line.

Suggested piping diagrams are shown in 

Figures 

9 through 12.

 These diagrams are meant only as a 

guide. Components required by local codes must be 

properly installed.

Note the recommended location of the 

temperature sensor on the diagrams. The Copper Brute 
II is shipped with an additional sensor that can be used 

for more full-featured domestic water heating control. 
To get these features, you must provide a location for 

the additional sensor. It can be strapped to a pipe from 

1" to 4" diameter, or inserted into a tank immersion 

well.

The minimum inlet water temperature for the 

Copper Brute II is 120°F (49°C) to avoid condensing 

on the copper coils.

Follow the tank manufacturer’s guidelines for 

completion of the hot water system connections.

If the Copper Brute II water heater is installed 

in a closed water supply system, such as one having a 

backflow preventer in the cold water supply line, the 
relief valve may discharge periodically, due to thermal 

expansion. Means (such as a properly-sized expansion 

tank) shall be provided to control thermal expansion. 
Contact the water supplier or local plumbing inspector 

on how to control this situation.

In a water heating application (an open system), 

new water is constantly being introduced. With the 
new water comes a fresh supply of minerals that can 

be deposited on the unit’s heat exchanger. This is 

commonly known as scaling. The amount of minerals 

will depend upon the hardness of the water. Water can 
also be aggressive, and can erode metals, including 

copper, if the water is moved too quickly. The water 

flow requirements for the Copper Brute II water heater 

are based upon the hardness of the water. The water 

flow is kept high enough to prevent scaling, but low 

enough to prevent tube erosion. For extremely soft or 

hard water, cupro-nickel tubes are available. Contact a 

Bradford White Representative if you have questions 

or concerns about water quality.

Pump-mounted water heaters can be ordered 

with standard pumps for soft or normal water or with 

pumps for hard water. The pumps used are sized for 

the headloss through the heater, plus 30 feet (9.1m) 
of full-sized piping (same size as heater outlet) and a 

normal number of fittings. 

Table 9

 specifies water flow rates for water 

heaters, which will enable the user to size a pump. 
The headloss shown is for the heater only, and the user 
will need to add the headloss of the piping system to 

properly size the pump.

These systems are not allowed in the 

Commonwealth of Massachusetts.

Piping and components connected to this water 

heater for the space heating application shall be 

suitable for use with potable water.

Toxic chemicals, such as used for boiler 

treatment, shall not be introduced into the potable 

water used for space heating.

This water heater when used to supply potable 

water shall not be connected to any heating system 
or component(s) previously used with a non-potable 

water heating appliance.