Jayco 2015 MELBOURNE User Manual page 83

CLASS C MOTORHOME
The DSI water heater is designed to heat water quickly and efficiently. The water
heater manufacturer has preset the sensing limit to maintain the water
temperature when the water heater is activated.
The thermostat on your water heater is not adjustable. It is a temperature sensing
limit designed to maintain a water temperature of 130°F (54°C).
The water heater does not have a pilot. It is equipped with an ignition device
which automatically lights the burner. Do not try to light the burner by hand.
Operating instructions
1. Turn OFF all electric power to the water heater.
2. Turn OFF the propane supply.
3. Wait five minutes for the propane to clear the area. If you smell propane
STOP! Follow the safety instructions listed in the manufacturer's owner's
manual. If you do not smell propane, go to the next step.
4. Turn ON the propane supply.
5. Turn ON electrical power to the water heater.
6. Turn the switch to the "ON" position. If the burner does not light, the system
will automatically attempt two more tries for ignition before lock-out occurs.
NOTE: Each ignition cycle will have a 15 second purge before spark cycle if
system is a three try system.
7. If lock-out occurs before the main burner lights, turn the water heater control
switch to OFF, wait five seconds and turn the switch to the ON position. This
will restart the ignition cycle.
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.
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
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.
SECTION 8 – PLUMBING SYSTEM
8-5