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PLUMBING
Waste Water Drain Lines
The drain lines are plumbed from the sinks, showers, and
toilets are sloped to drain waste water to the grey or black
tank. However, if the coach is equipped with a lift pump,
refer to the “Lift Pump” article. If the coach is equipped
with macerator toilet(s), refer to the toilet article(s).
The drain lines connecting slideout-installed components,
such as the kitchen sink and other optional equipment
utilizing the coach water supply, are typically hard-
plumbed within the slideout. The hard plumbing from the
kitchen slideout connects to the hard plumbing from the
tank using a braided drain line to ensure flexibility as the
slideout extends and retracts. The fresh water plumbing
lines are normally tied to the flexible drain pipe and extend
and retract smoothly as the slideout travels.
P-Traps and Waterless Traps
This article provides an overview and care and maintenance recommendations for traditional and waterless p-traps.
P-Traps
The sinks and shower drain have a water trap to prevent
holding tank odors from entering the coach. These traps
must have water in them in order to trap the odors. While
traveling, the water may leave the P-Trap. While stored,
the water may evaporate, allowing an odor to enter the
coach. If this occurs, run water from the faucet into the
drain, allowing water to fill the trap.
Waterless Traps
Some coach models with a rear shower may have
waterless traps in lieu of conventional P-traps. Waterless
traps are designed to allow water to drain and to
prevent odor from entering the coach without the height
requirements of the conventional p-trap. Pressure builds
and the self-sealing valve opens as water drains from
a fixture. The valve closes to form a tight seal after the
water has completely drained from the sink or shower.
No routine or seasonal maintenance is required for the
waterless trap.
Foreign objects, such as hair, in the trap may allow odor to
enter the coach and impede or slow water drainage and
require occasional cleaning. When removing the waterless
trap for cleaning, the ridges must be down and the
direction of water flow must be correct when re-installed.
If standing water occurs in your shower, do not
attempt to unplug or open the drain with a coat
hanger or a sewer snake. Before taking your coach
to a service center, try leveling your coach so that
the rear is raised slightly higher than the front. This
may correct the condition and prevent drain-cleaning
or a service repair. If this does not correct the issue,
Newmar recommends taking your coach to a service
center for drain-cleaning or repair.
IMPORTANT
!
Avoid using “S.O.S.” type cleaning pads or other
abrasive cleaners because they may scratch the
surface. Do not use cleaners that contain harsh or
abrasive chemicals. Alcohol or similar solvents should
never be used.
IMPORTANT
!
Summary of Contents for London Aire 2021
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