Airstream CLASSIC TRAILER - Manual (Page 71)

F
DRAIN VALVES
The fresh water line drain valves have been moved to the exterior of the coach for
easier access. If you look between your tires you can see a galvanized “box” that is a
few inches lower than the trailer frame. This “box” or pan supports the water tank.
The line drains will be the two brass petcocks extending from the end of the pan. The
white plastic petcock you will see is to drain the water tank.
To Empty Fresh Water Tank
Pumping the water out with the self-contained water pump may empty the fresh water
tank. Simply turn on the pump switch and open a couple of faucets until the water will
no longer comes out. On all models there is also a petcock type drain valve located in
the wheel well and extended out through the tank support pan.
An additional drain plug is located on the bottom of the tank, accessible under the
inspection plate close to the petcock that can be seen on the bottom of the tank
support pan.
Note: For winterizing purposes, only the petcock behind the tires needs to be opened
to drain the tank.
Water Heater Draining
All models have a drain plug or petcock on the water heater. Access is from the
exterior. The plug or valve is usually located in the lower left corner, viewed as you face
the exterior of the water heater.
WATER VALVES
Your Airstream has 6 in-line water shut off valves. One is for the water purifier, two
are for shutting off the cold water supply to the toilet and exterior water service, three
are for bypassing the water heater when winterizing using the anti-freeze method as
explained in the winterizing section of this manual.
Water heater by-pass valves are located on the water heater, accessed inside the
lavatory cabinet by opening the cabinet door or removing the cabinet drawer, by
opening the roadside exterior compartment door or removing the wardrobe shelf.
A toilet shut off valve is used to shut water off to the toilet in an emergency or service
situation. On some units it is located inside the lavatory cabinet, on most units it is
located just behind the toilet close to the floor.
A water purifier shut off valve is located under the galley top on the water feed line to
the purifier cartridge.
On all units except the front bed models an exterior water service shut off valve is
located nside the lavatory cabinet and can be accessed by either opening the cabinet
doors or removing the cabinet drawers. The front bed models shut off valve is accessed
by removing the access panel on the wardrobe bottom shelf. The exterior water service
is located beyond the heated area of the trailer and can be damaged if the water is
not turned off in freezing temperatures. In freezing temperatures close the shut off the
valve and open the exterior water service valve to drain the valve and line.
There may be one, two, or five valves located inside the lavatory cabinet according to
your model length. If there are more than one, three of valves are used as the water
heater by-pass system as explained above and are easily recognizable as they will be
located next to the water heater. Another may be for the toilet shut off. The fifth valve is
for the exterior water service. Always check to see if the water supply has been cut to
the exterior service before using the rest of the water system in freezing weather.
F - 10
PLUMBING