JAYCO TOWABLE SECTION 8 – PLUMBING SYSTEM
8-17
Vents:
Another important part of this system is the vent pipes and vents that release air from the
grey and black water holding tanks. On most models the exterior vent cap is attached to
the roof and must be kept clear of obstructions to perform as intended. On some models,
the vent pipe may be part of the drainage system referred to as a "wet vent" (water flows
downward as air flows upward in the same pipe).
Some models are equipped with a side vent system. The side vent must be kept clear of
obstructions to perform as intended. On these models, the following label will be next to
the termination valve. This label should not be removed from your recreation vehicle.
Sewer Hose Storage:
Depending on your RV model, the sewer drain hose may be stored in an exterior
compartment marked “Sewer Hose” or it may be located in the hollow square tube
bumper. The bumper has removable plastic end caps, and the hose slides inside the hollow
bumper.
BLACK/GREY WATER HOLDING TANKS
When connected to the sewer drain line at a campground, keep the “black tank drain”
valve closed until the holding tank is at least ¾ full. This should provide sufficient water to
assist in complete draining of the black water holding tank. Repeat as needed. Never leave
the black tank drain in the open position continuously when connected to the campground
sewer system.
Traveling with the tanks full can affect your fuel consumption, and depending on the
location of the tanks, can affect your vehicle handling characteristics. If you are dry
camping and cannot immediately empty your holding tanks, reduce your vehicle speed
until you reach a dumping station.
BLACK & GREY TANK DRAINS
There are labels on the exterior of the recreation vehicle indicating the location of the grey
tank drain and black tank drain (also called dump valves). Always drain the black water
holding tank first so the following grey tank waste water can help rinse any solids or debris
from the dump outlet and sewer hose.
1. To make drainage easier, level the RV.
2. Remove the sewer hose housing dust cap, and attach
the sewer hose (customer supplied).
3. Place the end of the sewer hose into the approved
dump station.