Anode Protection; Pressure Relief Valve; Thermostat And Manual Reset - Suburban SW10D Installation And Operation Manual

Be sure the power is "OFF" to the water heater ignition system during
any type of refueling and while vehicle is in motion or being towed.
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).
Water temperatures over 125°F (49°C) can cause severe burns instantly
or death from scalds; therefore, be careful when using hot water.
Children, disabled and elderly are at highest risk of being scalded.
Always feel water before bathing or showering.
CORRECT
BLUE OR BLUE/ORANGE
WELL DEFINED PATTERN
BLEU OU BLEU/ORANGE
TYPE BIEN DEFINI

ANODE PROTECTION

The tank in this 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, we recommend
it be replaced yearly. NOTE: Water with high levels of iron and/or sulfate will
increase the rate of deterioration; therefore, more frequent replacement may
be required. If anode rod is mostly eaten away, replace it with a new one. (See
Figure 11)
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 tank protection.
Operating the water heater without proper anode protection will decrease tank
life and will void your warranty on the tank. NOTE: Tank is drained by removing
anode rod (See "Drain and Storage" instructions).
To extend anode life, drain water from tank whenever RV is not being used.
Avoid any extended time of non use with water in tank.
Also, refer to section on winterizing.
WARNING! Do not replace the anode rod with any non-Suburban
accessory part, such as an "add-on" electric heating element. Items
such as these are not approved to be installed in Suburban products.
They could create an unsafe condition and will also void all warranties.
ANODE ROD
LA TIGE DE L'ANODE

PRESSURE RELIEF VALVE

The temperature and pressure relief valve is designed to open if the temperature
of the water within the heater reaches 210°F, or if the water pressure in the
heater reaches 150 pounds. Recreational vehicle water systems are closed
systems and during the water heating cycle the pressure build-up in the water
system will reach 150 pounds. When this pressure is reached, the pressure relief
valve will open and water will drip from the valve. This dripping will continue
until the pressure is reduced to below 150 pounds, and the valve closes. This
condition is normal and does not indicate a defective relief valve.
INCORRECT
INEXACT
YELLOW OR YELLOW/
ORANGE
ERRATIC PATTERN
JAUNE OU JAUNE/
ORANGE TYPE
ERRATIQUE
Figure 10
NEW ANODE ROD
ANODE NEUVE
75% CORRODED ANODE ROD
ANODE CORRODEE A 75%
Figure 11
WARNING! Do not place a valve between the relief valve and the tank. Do
not plug the relief valve under any circumstances.
WATER WEEPING OR DRIPPING FROM PRESSURE
RELIEF VALVE
You may experience water weeping or dripping from your water heater's Pressure
and Temperature (P & T) Relief Valve when your water heater is operating. Water
weeping or dripping from the P & T Valve does not always mean the P & T Valve
is defective. As water is heated, it expands. The water system in a recreational
vehicle is a closed system and does not allow for the expansion of heated water.
When the pressure of the water system exceeds the relieving point of the P & T
Valve, the valve will relieve the excess pressure.
Suburban recommends that a check valve not be installed directly at the inlet to
the water heater tank. This will increase weeping of the pressure relief valve.
WARNING! Do not remove or plug the 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 water heater.
2. Turn off cold water supply line.
3. Open a faucet in the RV.
4. Pull out on the handle of the Pressure Relief (P & T) Valve and allow water to
flow from the valve until it stops.
5. Release handle on P & T Valve - it should snap closed.
6. Close faucet and turn on 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
of the P & T Valve. If the weeping persists after following this procedure, you may
elect to install an expansion or accumulator tank in the cold water line between
the tank and check valve to relieve the pressure caused by thermal expansion.
Contact your local dealer for assistance.

THERMOSTAT AND MANUAL RESET

MODELS SW10D, SW10DE, SW10DM AND SW10DEM
SW12D, SW12DE and SW12DEM
SW16D, SW16DE and SW16DEM
The model water heaters listed above are equipped with a high temperature limit
as a cut-off device. Temperature above 180°F will cause manual reset button to
trip shutting down main burner.
To activate burner, the water temperature must be below 110°F, push reset
button to re-activate burner.
RESET BUTTON
12 V.D.C. T-STAT
HI-LIMIT
Figure 12
THERMOSTAT AND MANUAL RESET
MODELS SW10DE and SW10DEM
SW12DE and SW12DEM
SW16DE and SW16DEM
The model water heaters listed above are equipped with a high temperature limit
as a cut-off device. Temperature above 180°F will cause manual reset button to
trip shutting down the electric element.
To activate element, the water temperature must be below 110°F, push reset
button to re-activate the electric element.
6
RESET BUTTON
120 V.A.C. T-STAT
HI-LIMIT
Figure 13