Page 20 | BRADFORD WHITE CORP. |
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SECTION 4B.
Water Connections —
Copper Brute II Water Heater
4B.1 Water System Piping —
Water Heater
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.
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
IIis shipped with an additional sensor that can be used for more
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.
4B.2 Hot Water Supply Piping —
Water Heater
Follow the tank manufacturer’s guidelines for completion of the hot water system connections.
NOTE: A listed temperature and pressure relief valve listed as complying with the Standard for Relief Valves and Automatic Gas Shutoff Devices
for Hot Water Supply Systems (ANSI Z21.22 / CSA 4.4) of suitable discharge capacity must be installed in the separate storage tank system.
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
4B.3 Water Flow Requirements —
Water Heater
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,
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.
4B.4 Combined Water Heating (potable) and Space Heating — Water Heater
NOTE: 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