Reliant FVIR GAS WATER HEATER Technical Information PDF herunterladen (Seite 28)

RESIDENTIAL GAS AND ELECTRIC WATER HEATER

TROUBLESHOOTING and SERVICE HANDBOOK

RELIANCE Water Heater Company Technical Training Department

STANDARD RESIDENTIAL ELECTRIC WATER HEATER SERVICE GUIDELINES

Construction

See “General Section” for features common to both gas and electric models.

Miscellaneous:

Amperage (Amps) (1 phase) = Watts divided by Volts

Amperage (3 phase) = (Watts X .577) divided by Volts

KW Required = (GPH X 8.25 X Temp. Rise X 1.0) divided by (3413)

Ohms = Volts divided by Amperes

One kilowatt is equal to 1000 watts

One kilowatt is equal to 3,413 BTU

Recovery Rate = (KW X 3413) divided by (Temp. Rise X 8.25)

Rise (F ) = (KW X 3413) divided by (GPH X 8.25)

Supply electrical fusing or breakers should be sized at least 125% of expected heater

amperage.

Water weighs 8.25 pounds per gallon at 120 F (49 C).

% of Hot water = (Mixed temp. – Cold) divided by (Hot temp. – Cold)

Heating element(s)

This style water heater will have

one or two electric, heating

elements immersed in the tank.

One element will always be

located low in the tank; a second

element is commonly located

down about 1/3 of the tank height from the top of the tank. These elements will seldom

be wired to operate at the same time. (If they operate at the same time, amperage draw

doubles, wire gauge size increases, fuse size increases and little is gained in heat

recovery.)

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Reliant FVIR GAS WATER HEATER Technical Information Seite 28