Plumbing; Water System (Self-Contained); Water Pump; Draining System - Airstream TOMMY BAHAMA 2017 Owner's Manual

Interior

Plumbing

Water System (Self-Contained)

The fresh water system consists of a city water hookup,
fresh water tank gravity fill, fresh water tank and drain
valve, water pump, pump filter, hot and cold water
lines, water heater, fresh water line low point drain
valves, and faucets� Full explanations on the locations
and use of these feature are explained in this section�
Before using a water system, check that the water
heater bypass valve is turned to the use position�
The bypass valve is located on the back of the water
heater under the lounge on the roadside, accessed
by opening the rear cargo doors and reaching under
the lounge� See Winterizing and Storage for further
information on the bypass� Check that the exterior
water heater drain plug is installed� Close all low point
drain valves and the fresh water tank drain valve�

Water Pump

The water pump switch operates the pump� Once the
switch is turned on, the pump will run until the water
pressure reaches approximately 55 psi� At this point, an
internal pressure switch will shut it off� When a faucet is
opened, the water pressure will drop and the pump will
start to run again�
As a general rule, the water pump should be turned off
while using a city water hookup; however, the water
pressure at some campgrounds may be low� The water
pump can be turned on to assist the city water hookup
pressure� Be sure there is some water in the fresh
water tank� The pump will only use the water that is
needed out of the tank to bring the pressure up to the
usual standard of 55 psi�
Access to the water pump will be necessary for
periodic cleaning of the strainer screen� Refer to
Section 8 - Maintenance for water pump access and
strainer screen removal�

Draining System

Fresh Water Lines and Tanks

Fresh water drain valves consist of low point water line
drain valves and fresh water tank drain valves� The
valves are in-line or petcock-type valves�
Refer to Section 9 - Maintenance for necessary drain
valve locations and draining procedures of fresh water
lines and tanks�
5-8

Drain and Waste System

Your touring coach has a drain and waste system that
includes waste-holding tanks made from corrosion-
free, molded plastic, with trouble-free dump valves�
The main (Black Water) holding tank enables you to
use the toilet for several days away from disposal
facilities� The wastewater from the sink, shower, bath,
and lavatory drains into the auxiliary (Gray Water)
holding tank�
Each tank has its own dump valve with both tanks
draining through a common outlet� Therefore, only one
sewer hose connection is needed when hooking up to
a dump station�
Almost all campgrounds will have dumping facilities�
Park directories, such as Woodalls and Rand McNally,
also list dumping stations�
Refer to Section 9 - Maintenance for important
information on Black and Gray Water tanks draining,
cleaning, and rinsing procedures�
Check your monitor panel frequently (see Appliances
in this section)� When the Black Water holding tank is
completely full, sewage cannot be emptied from the
toilet bowl. If the Gray Water holding tank is overfilled,
drain water will back up into the shower floor pan and
cause an unpleasant cleaning job� Never drain the
tanks at any place other than an approved dumping
station�
Never put wet strength paper towels or tissues
in your holding tank since they will not dissolve
and can catch in the mechanism of the dump
valve. Colored toilet tissue is slower to dissolve
than white. Most motorhome accessory stores
offer tissue designed for RVs that will completely
dissolve.

Deodorizers

There are many deodorizers on the market in tablet,
liquid, and powder form� These not only combat odor,
but also stimulate the bacteria that works to dissolve
the solids in your tank�
WARNING
2017 Tommy Bahama TC