Table of Contents
Advertisement
WATER HEATER
(See page 78)
Your RV may be equipped with either a tank water
heater or on demand water heater. Not all on demand
water heaters are completely tankless, instead using a
very small tank to keep a pre-heated water reserve.
Gas/Electric DSI Tank Water Heater System (if equipped)
Make sure the water heater is filled with water before use as even
momentary operation of the water heater without water in it may result
in damage to the tank and/or controls. Always open both the hot
and cold water faucets when filling the fresh water tank to allow air
pockets to be forced out of the water heater.
The water heater does not have a pilot. It is equipped with a direct
spark ignition (DSI) device which automatically lights the burner. Do
not try to light the burner by hand.
Operating instructions
1.
Turn ON the propane supply.
2.
Turn ON electrical power to the water heater.
3.
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. Each ignition cycle will have a 15 second
purge before spark cycle if the system is a three try system.
4.
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.
5.
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.
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.
Water Heater Switch (if equipped)
The "propane GAS" switch enables propane operation of the water
heater, and the "ELECTRIC" switch enables electric operation.
Water heaters in some models will ONLY have a single LP Gas water
heater switch. These units will not heat water electrically.
Water Heater Bypass (if equipped)
Your RV may be equipped with a water heater bypass. This valve
system is located at either the water heater, or on the utility center
panel depending on your model. For detailed information refer to the
"UTILITY CENTERS" on page 66 or "SANITIZING/WINTERIZING
THE PLUMBING SYSTEM" on page 75.
Page 68
PLUMBING SYSTEM
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
U
Y
NIVERSIT
manual for details on eliminating the odor from sulfur water. Odor
from sulfur water is not a service problem.
High elevation deration
Operation of the water heater at high elevations 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 elevations. Consult with
your dealer for proper derating of the water heater. Changing out of
the orifice (derating) should be done by the dealer or a qualified
service agency.
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.
P&T Valve
The pressure and temperature (P&T) relief
valve is designed to open if the temperature
or pressure of the water is too high. When
this happens, the pressure relief valve will
open and water will drip from the valve.
This "weeping" or dripping will continue
until the pressure is reduced, and the valve
closes. This condition is normal and does
not indicate a defective relief valve.
One way to reduce the frequency of this occurrence is to maintain an
air pocket at the top of the water heater tank. This air pocket will form
in the tank by design; however, it will be reduced over time by the
everyday use of your water heater. To replenish this air pocket:
1.
Turn off the water heater.
2.
Turn off the cold water supply line.
3.
Open a faucet in the RV.
4.
Pull out the handle of the P&T valve and allow water to flow from
the valve until it stops.
5.
Release the handle on the P&T valve - it should snap closed.
Close the faucet and turn on the cold water supply. As the tank fills,
the air pocket will develop. Repeat this procedure as often as needed
to reduce the frequency of the weeping P&T valve.
Maintenance
Do not allow the burner to burn with a yellow flame, or continue to
operate the water heater with an improper burner flame. Periodically,
inspect the water heater vent for soot. Soot is a sign of incomplete
(See page 78)
Water Heater Pressure Valve
Advertisement
Table of Contents
