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This water heater must not be located near flammable liquids such as gasoline, butane, liquefied propane,
adhesives, solvents, paint thinners, etc., as the controls of this water heater could ignite these vapors and cause
an explosion, resulting in property damage, severe personal injury, or death.
D. ANODE ROD
This water heater is equipped with a magnesium anode rod. Anode rods are sacrificial components that
counteract water chemistry to minimize or eliminate tank corrosion.
The anode rod should be inspected annually and replaced as necessary to prolong tank life. Have the supply
water quality professionally analyzed, as local water conditions will influence the duration for inspection and
replacement of anode rod.
The use of a water softener may increase the speed of anode consumption. More frequent inspection of the
anode is needed when using softened or treated water.
Water with high sulfate and/or mineral content can produce a rotten egg odor in heated water. Chlorinating the
water supply may minimize this problem.
NOTE: Failure of a heat exchanger due to lime scale build-up on the heating surface, low pH or other imbalance
IS NOT covered by the warranty.
NOTE: Do not remove the anode rod from an operating water heater. Operating the water heater without the
anode rod will shorten the life of the tank and VOID the warranty.
PART 3 – HEATER PIPING
A. PLUMBING
It is mandatory that all plumbing be done in accordance with federal, local, and state plumbing codes and
practices. Failure to properly install the water heater WILL VOID the warranty. It is also necessary to use both
thread tape and pipe dope on all mechanical plumbing connections.
When filling the water heater, open a hot water tap to release air in the tank and piping. Failure to do so could
lead to improper water heater operation.
B. BOILER CONNECTIONS
Use two wrenches when tightening water piping at heater. Use one wrench to prevent the heater return or supply
line from turning. Failure to prevent piping connections from turning could cause damage to heater components.
Use a 1” nominal minimum pipe size when piping with zone valves or circulators.
On the water heater, the boiler supply connects to the outlet of the circulator. The circulator inlet is to be
connected to the “HOT OUTLET” side of the boiler. Be sure that the arrow on the circulator is facing the correct
flow direction. (See pressure drop sizing for circulator, this manual.) On the tank, the boiler return is to be
connected to the return side of the boiler. The return(s) from heating loop(s) should have a flow check or swing
check valve installed before the return pipe from the tank.
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