Heartland Owners Forum
http://manuals.heartlandowners.org
Landmark 365 User Guide V1.1.pdf
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Version 1.1, March 10, 2016
Fresh Tank Drain
The drain for the fresh water holding tank is located on the off-door-side, near the axles. There is
typically an 8-12” length of pex sticking out from the coroplast, with a valve that is opened to drain the
tank.
Filling the Fresh Tank From a Water Container
The city water inlet has a built-in check valve to prevent water from spurting out the inlet while using
the water pump. A certain amount of water pressure is required to operate the check valve. Normally
when hooked up to a faucet, the city/campground water supply provides enough pressure to operate
the valve so that water will go through it.
If you are boon docking and want to add water to the fresh tank from a container, there probably won’t
be enough pressure to operate the check valve. Some owners have obtained inexpensive pumps to put
in-between the water container and city water inlet. The pump will provide enough pressure to operate
the check valve. If you’re boon docking, a 12V DC pump will work without the use of a generator.
Low Point Drains
The Landmark 365 does not have low point drains. On trailers with low point drains, in cold weather,
the water between coroplast and drain valve can freeze allowing ice to wick into the tee, blocking water
flow. To avoid that problem, the Landmark 365 has no low point drains. There is still a fresh tank drain
poking through the coroplast, on the off-door-side, near the front axle. There may also be an overflow
drain for the washing machine.
Studor Air Admittance Valves
Sink drains have p-traps that hold a small amount of water to block sewer gas from entering the coach.
When draining a sink, a vacuum effect can suck the water out of the p-trap. To prevent this, and to
facilitate fast draining, the drain lines are typically vented through the roof. However, in some
configurations, it’s not practical to use a roof vent. A kitchen island may be one of those configurations.
