Tiffin Motorhomes 2014 Phaeton, Owner'S Manual

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TIFFIN MOTORHOMES –PHAETON® Chapter 4 MAJOR APPLIANCES & ACCESSORIES
Tankless Gas Water Heater
Your coach may be equipped with an optional tankless gas water heater (Figure 4-
16). The tankless gas water heater provides instantaneous hot water as needed. To
operate the tankless gas water heater you will need to follow the directions listed
below:
• Pressurize the water system by turning on the pump or city water pressure.
• Purge all air from system by turning on the taps until a steady stream of
water flows from the taps. Turn off the taps.
• Turn on the 12 VDC power supply. This is labeled “Water Heater” and is located in the cabinet above
the driver seat.
• Turn on the propane supply at tank and the manual gas valve if installed in system. Please note the heater will
remain dormant until a water tap is opened and the heater senses a water flow of at least 0.4 GPM.
• Turn on hot water tap. The heater will fire up within two seconds and hot water will flow from the tap in the time
that it takes to get through the plumbing from the heater to the tap. Hot water delivery will continue as long as
the water is flowing. (NOTE: You may have to turn the water on and off several times to bleed the air from the
LPG line before the water heater fires up.) If the heater fails to light after several ignition attempts, turn the
power to the unit off, wait five seconds and turn the power on again.
• Close the hot water tap and heater will shut off.
NOTE : When using an “on/off” button on a shower head or an outside wash down box, always turn off the
hot and cold water valves when finished. Not doing so will result in cold water bleeding into the hot water
system and causing the water heater not to ignite. Cold water or alternating warm and cold water will result.
Figure 4-16.
Tankless Gas Water Heater
IMPORTANT!
The tankless water heather is not designed to be used while the motor home is in
motion! Doing so will cause permanent damage to the ignitor.
The tankless gas water heater is designed to give a continuous flow of hot water as long as required and maintain the
approximate set temperature through all flow rates within the capacity of the heater (85º temperature rise per GPM).
The heater will not fire at very low flows; i.e., under 0.4 GPM.
It is recommended that even when dry camping, take a real shower and leave the water running as you would at home.
You won’t run out of hot water and you won’t have to waste water waiting for the cold water to purge from the water
line every time the water is turned back on. RV showerheads are designed to drip when turned off and will allow the hot
water line to be filled with cold water.
WARNING: Always turn off the 12-volt power supply to the heater during any fueling operations. Operating
this water heater or any other ignition source during fueling could cause a fire or explosion, which could result
in serious injury or death.
NOTE: Should overheating occur or the gas supply fails to shut off, turn off gas valve at the supply tank.
Immediately call a qualified service technician.
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