SECTION 8-PLUMBING SYSTEMS JAYCO TOWABLE
Anode rod protection
The tank in the water heater is protected by a magnesium or aluminum anode to prolong
the life of the tank by absorbing the corrosive action of hot water. Under normal use, the
anode rod will deteriorate and because of this, the water heater manufacturer recommends
the anode rod be replaced yearly. Water with high levels of iron and/or sulfate will
increase the rate of deterioration; therefore, more frequent replacements may be required.
If an anode rod is mostly eaten away, replace it with a new one. The water heater
manufacturer recommends replacement of the anode rod when consumption or weight loss
is greater than 75 percent.
Anode rod replacement chart
Operating the water heater without the proper
anode rod protection will decrease tank life and will void the tank
manufacturer’s warranty on the tank. To extend the anode life, drain the water from the
water heater tank whenever the RV is not being used. Avoid any extended time of non-use
with water in the tank.
To prevent a water leak when replacing the anode rod, a pipe thread sealant approved for
potable water (such as Teflon Tape) must be applied to the threads of the anode rod.
Proper application of a thread sealant will not interfere with the anode’s
High altitude deration
Operation of the water heater at high altitudes may require derating. If the water heater is
not properly derated, lack of sufficient oxygen for combustion may produce improper
burner operation. Pilot outage caused by burner lift-off or sooting from a yellow burner
may occur, indicating the possibility of carbon monoxide.
You may also notice a lack of efficiency in heating the water because of incomplete
combustion of the burner at these higher altitudes.
Consult with the local propane company, your dealer or the water heater manufacturer for
proper derating of the water heater. Change out of the orifice (derating) should be done by
the dealer or a qualified service agency.
NOTE: It is important that once the RV has returned to lower elevation (below 4500
feet) any high altitude deration or other adjustments be reversed for proper operation of the
water heater.
Pressure & temperature relief valve
The temperature and pressure relief valve is designed to open if the temperature of the
water within the heater reaches 120° F, or if the water pressure in the heater reaches 150
pounds. When this pressure is reached, the pressure relief valve will open and water will
drip from the valve.
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