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Page | 13
5.
Remove element
a.
The element has a brass hexagon manifold located on top. Grip hexagon brass top of
heating element and rotate counter clockwise to unscrew from the copper tank, see
picture below;
Cleaning Process
a.
Place elements in a small bucket and add white vinegar. Cover element to just under
hexagon brass top. Do not submerge whole element. Vinegar can also be poured into
heating chamber if needed.
We recommend letting elements soak for at least 3 hours.
Replacing Elements
a.
Insert and rotate heating element clockwise until tight
b.
Reset red wires and tighten screws
c.
Turn water ON to unit. Inspect for leaks. (If an element is not fully tightened down, it
may leak.)
d.
Open a few hot water faucets for 2 to 3 minutes to remove air pockets in the lines
Recirculating Maintenance
What is needed: 1 five gallon bucket, 1 four gallon-per-minute recirculating pump, two ¾ inch
female hoses, and 3 to 4 gallons of undiluted white vinegar (food grade). Depending on the
hardness of the water in your area, you may need to perform this maintenance once to twice a
year. See diagram on page 14.
Flushing the Heat Exchanger
1.
Disconnect electrical power to the water heater
2.
Close shut off valves for both hot and cold water lines
3.
Place bucket under service valve of hot water line
4.
Unscrew cap from service valve on hot water line
5.
Let water from heater drain completely into bucket
6.
Unscrew cap from service valve on cold water line
7.
Connect pump outlet hose to service valve
8.
Connect drain hose to service valve on hot water line
9.
Pour 4 gallons of white vinegar into bucket
10.
Place drain hose and pump inlet hose into the vinegar