Lochinvar 1, 000 through 2 warranty Water Chemistry

5.Be sure the pipes between the water heater or hot water supply boiler and storage tank are not less than 3 inch (76.2 mm) diameter for up to 70 equivalent feet (21.2 m) of pipe to and from the heater. If maximum equivalent length for the specified pipe diameter is exceeded, larger diameter pipe may have to be installed to achieve correct flow and temperature rise.

6.Common manifold piping for multiple unit installations will require larger minimum pipe sizes and tank circulating tappings to ensure proper flow.

If the temperature rise is too low, the water velocity is too high. Adjust as follows:

1.Temperature rise can be increased by slowly closing the field-installed ball valve in the outlet piping from the water heater to the storage tank to achieve the proper temperature rise.

2.Sustained high water velocity and low temperature rise may result in pitting or erosion of the copper tubes in the heat exchangers. This is a non-warrantable failure. Temperature rise must be properly adjusted to achieve the specified flow rate.

3.Once temperature rise has been properly set, reconnect the power leads to the bypass actuator.

4.Turn power on and place the run/stop switch in the “RUN” position and allow the bypass valve to go through the synchronization process before it begins normal operation.

WATER CHEMISTRY

NOTE:

Water temperature rise and maximum flow data are based on heating potable water with a hardness of 5 to 25 grains per gallon and total dissolved solids not exceeding 350 ppm.

The required temperature rise and the standard integral pump are sized based on the heating of potable water with a hardness of 5 to 25 grains per gallon and a total dissolved solids not exceeding 350 ppm. Consult the manufacturer when heating potable water exceeding these specifications. Heating of high hardness and/or high total dissolved solids water may require a larger circulating pump, an optional cupro-nickel heat exchanger and a revised temperature rise specification based on the water chemistry of the water to be heated. Water with a hardness of less than 5 grains per gallon will usually have a low pH which can be aggressive and corrosive causing non-warrantable damage to the heater, pump and associated piping. Corrosion due to water chemistry generally shows up first in the hot water system because heated water increases the rate of corrosive chemical reactions.

WARNING￿

Moving the bypass handle while appliance is firing can result in abnormally high water temperature that may cause sudden relief valve discharge.

CAUTION￿

Temperature rise cannot be adjusted when the burner is firing at less than 100% of rate input.

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