Jayco SENECA, Owner'S Manual

Page: 60 / 93

SECTION 7
PLUMBING SYSTEM
8. The first start-up of the heater may require
several ignition cycles before all the air is
purged form the propane lines.
If the burner will not come on, the following
items should be checked before calling a
service person:
1. See if the switch is turned OFF.
2. Check to make sure the propane supply to
the water heater is not empty or turned
OFF.
3. Check to see if the reset button on the
water heater ECO is tripped.
Odor from the hot water system
Many water supplies contain sufficient
amounts of sulfur to produce an odor, often
called “sulfur water.” Sulfur water can be
caused by a chemical action or by bacteria.
Generally, sulfur water is not harmful, only
unpleasant to smell. Refer to the water
heater manufacturer’s owners manual for
details on eliminating the odor from sulfur
water. Odor from sulfur water is not a service
problem.
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 motor
home has returned to lower elevation (below
4500 feet) any high altitude deration or other
adjustments be reversed for proper operation
of the water heater
.
Anode rod protection
Do not replace anode rod or any other
component with an accessory part that is
not authorized by the water heater
manufacturer, such as an “add-on electric
heating element. Such items are not
approved to be installed and could create
an unsafe condition and will void all
warranties
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 OEM 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 then 75 percent
.
Fig. 7.3 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 motor home 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.
7 - 4