tanks (2), tank valves (isolator, separator), water pump, Winter and Summer modes, Winterize, water pump, hot water heater, fresh water filter, sanitizing, city
There are two fresh water tanks
Interior / Winter tank
interior tank approx. 10 gallons
under rear passenger-side seat
fill inside the coach back door
* Exterior / Summer tank
exterior tank approx. 17 gallons
fill inside the drver door
Fresh water tank capacity25 gallons/ 94 liter. Total fresh water capacity (includes water heater)31 gallons/ 117 liters MP80
GOOD FRESH WATER HABITS
Keep the ends of the fresh water hose clean and covered to clean.
Keep the fresh water tank stoppers clean.
Keep the city water faucets clean and covered.
There are two fresh water tank valves.
* The two tanks are connected by the tank ISOLATOR valve located next to the water heater; under the driver’s side lounge
seat, access from side.
The tank isolator valve is just a couple of inches to the rear of the vehicle from the tank selector valve
(to your left as you look into this cabinet) at the base of the large black speaker, and is a smaller black plastic
handle on a white water line. MP106
[Since the installation of the coach water filter, our tank isolator is very hard to see and switch,
so pack patience and a good light.]
You want this handle to be horizontal and pointed along the water line (open), not vertical and across it (closed) MP106
If you are driving for extended distances and don't want to carry extra water you don't need (33 gallons of water weighs
275 pounds, and it takes fuel to lug that much weight cross country), just put water in the front (exterior) tank at the driver's
door gravity fill, and leave the back (interior) tank empty. You will still have 17 gallons or so of water for use, and will travel
lighter with a better weight distribution since your rear axle will be about 85 pounds lighter. Every little bit helps. Of course,
once you get to the area where you're going to camp, fill up both tanks before you head out boon-docking so you can stay out
for a longer time without running out of water. MP106
The tank SELECTOR valve (red handle, under the driver’s side lounge seat, access from side) determines which tank the
water pump draws water from.
in-line parallel, from the exterior tank
You want it to be pointing toward the driver's side of the vehicle - that's the position where it's
drawing water from the external tank. MP105
perpendicular, from the interior tank
When this handle is pointed toward the front of the Roadtrek, the tank selector valve is drawing
water from the internal tank. MP105
To access the tank selector valve and the tank isolator valve, look inside the water heater enclosure, on the
floor just to the left of the refrigerator. The tank selector valve has a long plastic covered handle, usually either
yellow or red. MP105
Summer / Winter Modes MP47, MP126
⁃ In Summer mode, the tank SELECTOR handle is in the exterior tank position [parallel, inline to pipe, pointing
toward the driver’s side of the rig], AND the tank ISOLATOR valve is open [parallel, inline to pipe]. MP47
⁃ In winter travel months, the handle is in the interior tank position [perpendicular, pointing toward the front of
the rig] AND the tank ISOLATOR in closed [perpendicular]. MP47
Switching from Summer to Winter Mode MP127
Switching from Winter to Summer Mode MP130
In winter mode, remember that you need to keep the interior temperature at least 60 degrees F (15 C) by running
the propane furnace or heat pump, and keep the water heater running. Also remember that the waste water tanks are
not protected from freezing. If you use them, mix pink RV antifreeze with whatever you put down the drain 50/50.
If you do not use them, drain and winterize the waste water system.MP130
The 4008 Revolution fresh water automatic demand pump is super quiet, thermally protected and can run dry without
To use the water in the tank, you need to turn on the water pump.
Cold Weather and Winterize MP133
If your Roadtrek is going to remain heated to comfortable temperatures, and the temperatures during the day are well above
freezing (above 40 deg. F or above 4 deg. C) and the forecast is for temperatures just below freezing for a few hours at
night with calm winds, then you don`t need to winterize. The heat in your Roadtrek is enough to keep the lines from freezing.
Under moderate subfreezing conditions, antifreeze is required in the exterior fresh water tank, black and
gray waste water tanks. Use RV antifreeze in accordance with the manufacturer's instructions. MP7
72 continuous hours below freezing before MUST winterize; Branden at Leo's RV pick-up tour Oct 2015,
Jimmy, Service Manager at Leo's 23 Nov 2015
The flat screen TV should not be stored inside the Roadtrek in cold temperature, Manual p3
If the forecast is for extended cold periods, with daytime temperatures at or below freezing, if you`re not heating your
Roadtrek, or if you expect sustained winds and the roads and ground is already frozen, you need to winterize.
[Service at Leo's RV indicated continually below freezing for 72 hours, then winterize.]
DO NOT use automotive antifreeze. RV antifreeze is non-toxic and safe for potable water lines. MP134
Fresh Water Filter [Add-on]
The WaterPUR Company Model CC1-5-CA
Installed by Leo's Vacation Center Tuesday, 01 December, 2015
Fresh Water Odor
"…many water supplies contain sufficient amounts of sulphur to produce an odor. The odor is similar to rotten eggs and is
often referred to as "sulphur water.” It is not harmful - only unpleasant to smell. Sulphur water can be caused by a chemical
action or by bacteria. The solution to eliminate is chlorination of the water system. Add about six (6) ounces of chlorinated
common household liquid bleach to each 10 gallons in the water tank. Then run the chlorinated water throughout the system
opening each faucet one at a time until you smell the chlorine. Let the RV sit for a few days and the chlorine should take care
of the problem. Then you will need to take care of the chlorine. Remove the chlorine by flushing the system with fresh water.
This may take several attempts. You may consider adding a filtering system that removes chlorine and prevents sulphur water.
If the sulphur or rotten egg smell continues, flush the system once again as described above and replace anode rod as
Flush and Sanitize the Fresh Water Tanks at least every three months
Flush by filling the tanks completely using the gravity fills, open the tank isolator valve, and drain using the
freshwater tank drain underneath the right side of the driver's doorsill. It will sometimes take an hour or more
for the internal tank to drain through the external tank. You can speed the process up by selecting the internal
tank with the tank selector lever and running the water pump and the outside shower faucet. Remember to
put it back to the exterior tank after you're done.
Sanitize by adding 1/2 cup chlorine bleach to each tank, fill with water, let sit for at least two hours, and drain.
Flush tanks again. You can add 1/2 cup vinegar add while you flush to help dissipate the chlorine smell.
Information on the location of these valves is in the HOWTO: Potable Water Use section.
Maintain a safe onboard RV water supply by Bob Difley
Every six months sanitize your tank by pouring in one-fourth cup of bleach for every 15 gallons of water in
a full tank. Let stand overnight. Drain, fill, and rinse at least twice, or until chlorine odor is gone. Better yet, fill
with water and bleach when leaving the campground and let it slosh around in the tank as you head home.
City Pressurized Water
MP47 MP102 Potable Water
The city water connection is in the driver's side rearmost compartment. Unscrew the white plastic protective cap and connect
your clean hose to the water faucet and a water pressure regulator attached to this connection point. Turn the faucet on and
check for leaks, tightening the connections as necessary. MP47
To connect the Roadtrek's water system to an outside source: MP102 Potable Water
Turn the water pump off.
Close all interior faucets.
Close the city tank fill valve by turning the handle to the vertical position.
Flush old water and any contaminants out of the water supply faucet.
Connect your fresh water hose to the faucet.
Attach your pressure regulator to the Roadtrek's city water connection. [It should be permanently installed there.]
Attach a fresh water hose to the the pressure regulator.
Slowly open the faucet of the city water source.
The city water connection by-passes the water pump and fresh water tank. Therefore, the use of these items
is not necessary when connected directly to an external water source.
Water Heater, Propane only
MP35, MP67, MP92
Water heater capacity 6 gallons/ 28.5 liters MP80
The 190 Popular is equipped with a 6 gallon water heater. The heater requires both 12VDC and propane for proper
As with all the other switches on the monitor panel, the battery disconnect switch must be on for the water heater to work.
After turning it on, the red light to the right of the switch will come on for a few seconds, than [sic] go off as the burner ignites.
If the light keeps going off and on, your burner is not lighting. MP91
The Complete Guide to RV Water Filtration @ Trek with Us
Winter Travel, Family Motor Coaching By Gary Bunzer, November 2009