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Copper Brute II | Page 13 |
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Warning
Do not use open flame to check for leaks. An open flame could lead to explosion, which could result in property damage, serious injury or death.
NOTE: The Copper Brute II appliance and all other gas appliances sharing the gas supply line must be firing at maximum capacity to properly measure the inlet supply pressure. The pressure can be measured at the supply pressure port on the gas valve. Low gas pressure could be an indication of an undersized gas meter, undersized gas supply lines and/or an obstructed gas supply line.
SECTION 4.
Water Connections —
Copper Brute II Water Heater
4.1 Water System Piping —
Water Heater
Hot water piping should be supported by suitable hangers or floor stands. Do not support piping with this heater. 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 heater 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 head loss through the heater, plus 30 feet (9.1m) of full- sized piping (same size as heater outlet) and a normal number of fittings. Pumps used on
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 4, 5, 6 and 7. 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 heater is shipped with an additional sensor that can be used for more
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.
4.2 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 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
4.3 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 8 specifies water flow rates for water heaters, which will enable the user to size a pump. The head loss shown is for the heater only, and the user will need to add the head loss of the piping system to properly size the pump.