TIFFIN MOTORHOMES
–ALLEGRO BUS®
Chapter 11
PLUMBING & BATH FIXTURES
11-7
The motor home should be reasonably level for best operation of both of the wastewater systems (there are two,
separate wastewater systems). The gray-water system is for wastewater from the sinks and shower. The black-water
system is for sewage waste from the toilet. Each wastewater tank has its own control valve and both drain through a
common sewer-drain hose.
Toilet
The toilet (Figure 11-10) in your motor home is specifically designed for recreational-vehicle
service. The toilet operates with water from either the fresh water tank with the water pump
“on” or the city water supply. Before using the toilet, add water to the bottom of the tank.
Refer to the “BLACK WATER TANK” instructions elsewhere in this chapter. The toilet flushes
waste directly into the black-water holding tank. The toilet uses high-velocity water injection
to produce swirl effect in the bowl.
The greatest problem that causes stool solids to accumulate in the holding tank is lack of
liquids. When using your toilet, it is wise to fill the toilet 3/4 full of water—this will help wash
the solids away from directly below the toilet and to assure complete dumping of the
holding tank.
Simplified instructions for the use of the toilet are as follows:
To add more water to the toilet bowl:
Pull up the flush handle OR push the “Add Water” switch
(depending on what model is installed in your coach) until the desired water level is attained. To prevent
overflowing the toilet, a timer inside the control module limits the amount of water that can be added.
To flush the toilet:
Push the flush handle down OR push the “Flush” switch (again, depending on what
model is installed in your coach), then release it. Holding the handle or switch down will not prolong the
flush cycle nor start a new flush cycle. The handle or switch must be allowed to return to the neutral
position before another flush can occur.
Mode Switch:
The Mode switch is located on the right side of the control module. It lets you switch between three
function settings:
• Normal—use this setting for flushing the toilet.
• Service—use this position for cleaning the toilet bowl and flush ball seal. The flush ball will open automatically
and remain open in this position. Lifting up the flush handle or pushing the “Add Water” switch provides water
to the bowl.
• Manual Override—use this position to flush the toilet manually in the event of power or battery failure. This
switch disconnects the electronic brake in the flush valve motor, and allows manual flushing via the override
access hole in the side of the vitreous china base.
Note: The control module allows 15 seconds of water flow for cleaning. If more water is required,
return the switch to the NORMAL position, then back to the SERVICE position.
Figure 11-10. Toilet
Summary of Contents for 2014 Allegro Bus
Page 6: ... TIFFIN MOTORHOMES ALLEGRO BUS Chapter 1 GENERAL INFORMATION GENERAL INFORMATION 1 1 ...
Page 51: ... TIFFIN MOTORHOMES ALLEGRO BUS Chapter 5 CABINETS FURNITURE CABINETS FURNITURE 5 1 ...
Page 55: ... TIFFIN MOTORHOMES ALLEGRO BUS Chapter 6 STRUCTURAL FEATURES STRUCTURAL FEATURES 6 1 ...
Page 57: ... TIFFIN MOTORHOMES ALLEGRO BUS Chapter 7 ELECTRICAL FEATURES ELECTRICAL FEATURES 7 1 ...
Page 72: ... TIFFIN MOTORHOMES ALLEGRO BUS Chapter 8 SLIDE OUT FEATURES SLIDE OUT FEATURES 8 1 ...
Page 76: ... TIFFIN MOTORHOMES ALLEGRO BUS Chapter 9 EXTERIOR FEATURES EXTERIOR FEATURES 9 1 ...
Page 83: ... TIFFIN MOTORHOMES ALLEGRO BUS Chapter 10 INTERIOR FEATURES INTERIOR FEATURES 10 1 ...
Page 87: ... TIFFIN MOTORHOMES ALLEGRO BUS Chapter 11 PLUMBING BATH FIXTURES PLUMBING BATH FIXTURES 11 1 ...
Page 105: ... TIFFIN MOTORHOMES ALLEGRO BUS Chapter 13 ROUTINE MAINTENANCE ROUTINE MAINTENANCE 13 1 ...
