Grand Design Imagine, Owner'S Manual

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Glossary
GROSS COMBINED WEIGHT RATING (GCWR)
– The MAXIMUM ALLOWABLE COM-
BINED WEIGHT of the tow vehicle and attached towed vehicle. GCWR assumes that both
vehicles have functioning brakes, with exceptions in some cases for very light towed vehi-
cles, normally less than 1,500 pounds. (Check your tow vehicle’s towing guide.)
GROSS TRAILER WEIGHT RATIING (GTWR)
– The MAXIMUM TOWED VEHICLE
WEIGHT. Each component (receiver, drawbar, ball) of a ball-type hitch has its own rating.
Some ball-type hitches have separate ratings when used with a weight distributing system.
GROSS VEHICLE WEIGHT RATING (GVWR) – The MAXIMUM ALLOWABLE WEIGHT of
the fully loaded vehicle, including liquids, passengers, cargo, and the tongue weight of any
towed vehicle.
HEAT EXCHANGER
– A device that transfers heat from one source to another. For exam-
ple, there is a heat exchanger in your furnace - the propane flame and combustion products
are contained inside the heat exchanger that is sealed from the inside area. Inside air is
blown over the surface of the exchanger, where it is warmed and the blown through the duct-
ing system for room heating. The combustion gases are vented to the outside air.
HEAT STRIP – A heat strip is an electric heating element located in the air conditioning
system with the warm air distributed by the air conditioner fan and ducting system. They are
typically 1500 watt elements (about the same wattage as an electric hair dryer) and have
limited function. Basically they "take the chill off."
HIGH PROFILE – A fifth-wheel trailer with a higher-than-normal front to allow more than 6
feet of standing room inside the raised area.
HITCH – The fastening unit that joins a movable vehicle to the vehicle that pulls it.
HITCH WEIGHT – The amount of the camper’s weight that rests on the tow vehicle. It should
be approximately 12% - 15% with conventional trailers; approximately 18% -21% for fifth
wheels.
HOLDING TANKS
– There are three different holding tanks on most RVs; fresh water tank,
gray water tank and black water tank. The fresh water tank holds fresh water that can be
stored for later use. The gray water tank holds the waste water from the sinks and showers.
The black water tank holds the waste from the toilet.
HONEY WAGON
– Euphemism for the sewage pumping truck. Honey wagons are used to
empty RV holding tanks in places where full hookups and dump stations are not available.
HOOKUPS
– The ability of connecting to a campground's facilities. The major types of hook-
ups are electrical, water and sewer. If all three of these hookups are available, it is termed
full hookup. Hookups may also include telephone and cable TV in some campgrounds.