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MAINTENANCE
To ensure maximum performance of your water heater and to reduce the risk of a water
leak, we recommend the following maintenance:
Inspect the connections on the inlet and outlet of the water heater at least on an annual basis
for any signs of damage or failure. Any signs of damage, cracks, leakage or weakness should be
addressed. Take care not to over tighten the connections. Serious internal damage to your water
heater can occur if you over tighten the water heater connections at the unit.
IMPORTANT NOTES:
As with all electrical appliances, under no circumstances should you attempt to install, repair or disas-
semble this water heater without first shutting off all power to the unit directly at the fuse or breaker box.
SERIOUS BODILY INJURY OR DEATH COULD OCCUR IF YOU IGNORE THIS WARNING.
When any maintenance is performed on the water heater or the home's plumbing system that may
introduce air into the plumbing pipes, it is important to turn the power off to the water heater and purge
the air out of the lines before allowing the unit to power up. FAILURE TO DO SO COULD CAUSE PER-
MANENT DAMAGE TO THE HEATING ELEMENT AND VOID YOUR WARRANTY.
If you have a water supply with a high level of mineralization (hard water), you should increase the
frequency of your maintenance.
FLUSHING THE WATER HEATER
Flushing the heat exchanger is a complicated procedure that should only be performed by a
qualified service technician.
NOTE:
Improper maintenance WILL VOID water heater warranty.
1. Disconnect electrical power to the water heater.
2. Close the shutoff valves on both hot water outlet and cold water inlet lines (V1 and V2).
See Figure 1.
3. Connect one hose (D1, Figure 1) to the valve (V3) and place the free end in a bucket.
Connect one of the hoses (D3) to the circulation pump outlet and the cold water inlet
line to valve V4. Connect the other hose (D2) to the circulation pump inlet and place the
free end in the bucket.
V3
V1
Figure 1 – Flushing the Water Heater
V4
V2
12
D1
D2
D3
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