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DRY CAMPING — Camping when there is no city water hookup or shore power (i.e., using only the water and power
avaiable in the camper and not from any other source).
DRY WEIGHT — The actual weight of a vehicle or trailer containing standard equipment without fuel, fluids, cargo,
passengers, or optional equipment.
DSI (Direct Spark Ignition) — This term refers to the method of igniting the main burner on a propane fired ap-
pliance. The burner is lit with an electric spark and the fame is monitored by an electronic circuit board. This ignition
system is used in refrigerators, furnaces and water heaters. There is now a version of stove tops that light the burners with
a DSI ignition.
DUAL ELECTRICAL SYSTEM — RV equipped with lights, appliances which operate on 12-volt battery power when
self-contained, and with a converter, on 110 AC current when in campgrounds or with an on-board generator
DUALLY — A truck having two wheels on each side of the rear axle for a total of four wheels
DUCTED A/C — Air conditioning supplied through a ducting system in the ceiling. This supplies cooling air at various
vents located throughout the RV.
DUCTED HEAT — Warm air from the furnace supplied to various locations in the RV through a ducting system located
in the floor. (simiar to house heating systems).
DUMP STATION — Site where you drain your gray water (waste) and your back water (sewage) tanks. In most states, it
is illegal to drain your tanks anywhere except dump stations.
DUMP VALVE — Another name for the T-handle valve used to release and drain the back tank (sewage) and
gray tank (waste).
EGRESS WINDOW — The formal name for the emergency escape window. Egress windows are identified by
their abeling.
FIFTH WHEEL (FW) — A trailer and hitch configuration connected to the tow truck directly above the rear axle by way
of a special fifth wheel hitch. This causes several feet of the connected trailer to hang over the tow truck, pacing about 15
to 25% of the trailer's weight on the rear axle of the truck. Commercial trucks and trailers use this hitch configuration. Also
commonly spelled as 5th wheel.
FIVER — Another name for a fifth wheel RV.
FRESH WATER — The fresh water system provides potable water to the fresh water tank, kitchen sink, shower, bath-
room avatory, toilet, water heater and outside shower.
FRESH WATER TANK — Tank for holding fresh water for drinking, cooking, and bathing while not connected to a city
water supply.
FULL HOOK-UP SITE — A campsite that has city water, shore power and sewer hook-ups or connections avaiable
GLOSSARY