41
FLUSHING THE WATER HEATER
Based on your water conditions, the heat exchanger
may need to be flushed. Contact Essency for more
information. Save time and money by installing
service valves in outlet and inlet water circuits of the
water heater.
HOW TO PROCEED:
1. Disconnect electrical power to the water heater.
2. Disconnect the battery (see page 13).
3. Place towels around hot water outlet and cold
water inlet to avoid water on your water heater.
4. Close the shuto valves on both the hot water and
cold water lines (V1 and V2).
5. Connect pump outlet hose (H2) to the cold water
line at service valve (V4).Connect drain hose (H3)
to the hot water line at service valve (V3) and
place the free end of H3 into the solution.
6. Pour 4 gallons of undiluted virgin, food grade,
white vinegar into pail.
7. Place the end of the hose to the pump inlet (H1)
into the cleaning solution.
8. Open V3 and V4.
9. Operate the pump and allow the vinegar to
circulate through the water heater for at least 1
hour at a rate of 4 gallons per minute.
10. Turn o the pump.
11. Rinse the vinegar from the water heater as
follows:
a. Remove the free end of H3 from the pail and
place it in a sink or outside to drain.
b. Close V4 and open V2. Do not open V1.
c. Allow water to flow through the water heater
for 10 minutes.
d. Close V2. When unit has finished draining,
remove the inlet filter at the cold water line
and clean out any residue. Place the filter back
into its place and close V3.
e. Open V1 and V2.
12. Disconnect all hoses.
13. Dry the potential wet surface then restore
electrical power to the water heater.
Cold Water
line
Hot Water
line
V2V1
V4V3
H3
H2
H1
Cleaning
solution
Circulating
Pump
Inlet
Filter
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