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TIFFIN MOTORHOMES - SAP

05 Major Appliances

2017 Wayfarer: Chapter 5

LP/GAS Refrigerator

Your coach may be equipped with a standard LP/gas refrigerator. When this refrigerator is in the “LP gas” mode, make sure that the main LP gas valve is in the “on” position before attempting to start the refrigerator. Please note that the refrigerator is equipped with a semi-automatic energy selector (AES) control system which can be set automatically to switch between a 120volt AC system or a LP-gas operation system when available.

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A 12-volt power supply (e.g., 12 VDC system of the motorhome, auxiliary battery, converter, or motorhome engine battery) is required for proper operation of the electronic control panel. For 120 VAC electrical operation of the refrigerator, either the 30 AMP shore power line must be connected or the on board generator must be running, or the refrigerator is also connected into the inverter system to provide the necessary 120-volt AC power.

Note: Running the refrigerator on inverter power for prolong periods of time will drain the motorhome batteries.

To operate the refrigerator in the LP-gas mode, the main LP gas valve must be “open.” For specific instructions on refrigerator please refer to the operating booklet found in the Owner’s Information Package.

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Microwave Oven

The Wayfarer contains a convection microwave. All microwave ranges operate on 120-volt AC electrical power, supplied either by the external electrical hookup or by the onboard electrical generator in the motorhome. Touch pad controls are used for operating the convection microwave (i.e. cooking temperature, mode, power level, and cooking time). For basic operating instructions, care, and maintenance for the proper use of the microwave, please consult the specific manual in the Owner’s Information Package.

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Cooktop

The Wayfarer is equipped with a standard recessed two burner range (Figure 5-4).

Do not attempt to adjust the cook tops pilot light as it has been factory adjusted and factory set. To extinguish the cook top pilot light when use of the cook top is concluded, push inward on the cook top control knob and turn the knob clockwise to the "OFF" position (Figure 44.2).

To operate either of the two burner recessed cook top burners, light the burners by turning "ON" the gas control knob, wait a couple of seconds and the push the DSI (Direct Spark Ignition) button until a flame appears ( Blue Arrow Figure 44.3).

If the burner does not start after a few attempts, discontinue the process and let the released gas dissipate and then try the process again. The burner knobs operate in a counter clockwise manner and must be gently pushed inwards as they are being turned. Never use the cook top when the motorhome is in motion.

It is wise to have a qualified service technician periodically check the entire propane (LP) gas distribution system in your Wayfarer motorhome. Scheduling such an inspection annually would be a recommended, preventive maintenance routine for every motorhome owner.

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Water Heater

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Before the water heater is to be used, fill the fresh water system and purge the water lines to and from the water heater by opening all of the hot water faucets in the motorhome. Do so until water steadily flows from each faucet with no "spurting" or "hissing" sounds are heard.

The water heater uses either propane (LP) gas or 110V AC electric to operate the heater. Proper and safe operation of the water heater requires that all safety information provided in the manufacturers owner's manual be read and understood before placing the water heater into service. Take the necessary time to become familiar with this manual which is provided in the Owner's Information Package.

The water heater is designed for operation either with LP gas or 120-volt AC electricity.

NOTE: When you turn “on” the switch for the water heater the middle red button will light up. It will go off after several seconds—this means the water heater is lit. However, if the light stays illuminated, then that means the water heater has not ignited.

clipboard_e9690c5ede7c32eb6b73429a5285fd611.png  Figure 5-5: Water Heater Switch

LP Gas – Electronic Ignition Operation

1. If the water heater fails to operate because of high water temperature, the heater will go into a lockout condition (indicator light “on”). When the water eventually cools, reset the system by turning the switch to the “off” position for at least 30 seconds, then turn the switch back “on.”

2. If a lockout condition persists, contact your authorized dealer.

 

120- VOLT AC ELECTRICAL OPERATION

1. For electrical operation, use the Water Heater switch found on the master control panel in the galley of the coach.

2. Completely fill the water heater with water and purge the hot-water lines of any trapped air.

3. Turn the Water Heater switch “on.” NOTE: Turning the power “on” to the water heater without having previously covered the water-heating element with water may burn out the element and void the warranty.

4. After a while, check the water heater for proper operation; the water temperature should be approximately 140°F (60°C).

5. If the manual-reset, high temperature-limit switch should trip the circuit breaker; reset the switch by depressing the reset button – use a pencil or other non-metallic object to depress the reset button. If the high-temperature limit switch should again trip the circuit breaker, contact an authorized service technician or an authorized dealer.

6. Both the electrical and gas operations of the water heater may be used simultaneously to reduce recovery time of heating water up to desired temperature.

For general maintenance of the water heater or specific information about select steps in operating the water heater, please refer to the owner’s manual for this appliance contained in the Owner’s Information Package.

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WATER HEATER STORAGE

Figure 5-6: Water Heater if the motorhome is to be stored during the winter months, the water heater should be drained to prevent damage caused by freezing water contained in the water heater.

To drain the water heater, first turn “off” all electrical power, turn “off” the LP gas going to the water heater, then turn “off” the water pump. Open both the hot- and the cold-water faucets to drain the water lines and open the drain on the water heater to drain the entire system.

clipboard_e1ed4be9c3fcf3d870116fea7e8ce3ab6.png  Figure 5-6: Water Heater

When re-activating the water heater after the motorhome is taken out of storage, make sure that the entire water system, including the water heater, has been filled with water and the lines have been purged of any entrapped air before relighting the water heater. Failure to do so may allow the water heating element to be turned “on” before it is immersed in water; thereby, causing the premature failure of the heating element and voiding the warranty.

 

PRESSURE RELIEF VALVE

The relief valve for over-pressure and over-temperature conditions is located on the exterior of the water heater. This valve will operate if the water temperature reaches or exceeds 210°F or if the water pressure reaches or exceeds 150 psig.

Since the water system in the motorhome is a closed system when all water valves are shut, the water heating cycle can raise the temperature and, consequently, the pressure, of the water in the water heater; thereby realizing pressure increases approaching 150 psig.

Should this pressure (i.e., 150 psig) be reached, the pressure-relief valve will begin “weeping,” that is, minor dripping or leakage from that valve until the pressure drops below 150 psig, at which time the pressure-relief valve will re-seat itself and restrict the water flow. This is normal operation and should not be a cause for alarm. Do not obstruct or block the pressure-relief valve in any way, as this would keep the valve from functioning normally and protecting the hot water system

 

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