Dometic 300 Series User manual

SANITATION
TOILETS
REVISION D | Form No. 600346504 10/2020 | ©2020 Dometic Corporation
WARNING
Cancer and Reproductive Harm
www.P65Warnings.ca.gov
300 Series (300, 301), 310 Series (310, 311), 320 Series (320, 321)
EN Gravity-Flush Toilet
Installation and Operation Manual......2
FR Toilette à chasse par gravité
Manuel d’installation et d’utilisation ...19
ES Inodoro con descarga por gravedad
Manual de instalación y funcionamiento..37
Attention Consumers: This product is intended to
replace an existing toilet in your RV. If you are creating a new
installation or planning a more complicated project, please
consult a qualified service professional.

2EN
Contents
1 Explanation of Symbols and Safety
Instructions ......................2
2 Pre-Installation ...................3
3 Installation .......................7
4 Operation........................9
5 Maintenance ....................10
6 Troubleshooting .................15
7 Disposal ........................17
8 Warranty Information .............17
Service Center & Dealer Locations
Visit: www.dometic.com
Read these instructions carefully.
These instructions MUST stay with this product.
Contents
CAUTION
Indicates a hazardous situation that, if
not avoided, could result in minor or
moderate injury.
NOTICE: Used to address practices not related
to physical injury.
IIndicates additional information that is
not related to physical injury.
1.3 Supplemental Directives
To reduce the risk of accidents and injuries,
please observe the following directives before
proceeding to install, operate, or service this
appliance:
• Read and follow all safety information and
instructions.
• Read and understand these instructions
before installing, operating, or servicing this
product.
• The installation must comply with all
applicable local or national codes, including
the latest edition of the following standards:
U.S.A.
– ANSI/NFPA70, National Electrical Code
(NEC)
– ANSI/NFPA 1192, Recreational Vehicles
Code
– ANSI Z21.57, Recreational Vehicles Code
Canada
– CSA C22.1, Parts l & ll, Canadian Electrical
Code
– CSA Z240 RV Series, Recreational
Vehicles
1.4 Personal and Product Safety
NOTICE: Failure to adhere to the instructions
in the following statements could result in
personal, product, and/or property damage.
• Modifying this product may result in property
damage.
• Always turn off the water supply before
removing, installing, or repairing a plumbing
fixture.
1 Explanation of Symbols and
Safety Instructions
This manual has safety information and
instructions to help you eliminate or reduce the
risk of accidents and injuries.
1.1 Recognize Safety Information
This is the safety alert symbol. It is
used to alert you to potential physical
injury hazards. Obey all safety messages
that follow this symbol to avoid possible
injury or death.
1.2 Understand Signal Words
A signal word will identify safety messages
and property damage messages, and also
will indicate the degree or level of hazard
seriousness.
DANGER!
Indicates a hazardous situation that, if not
avoided, will result in death or serious
injury.
WARNING
Indicates a hazardous situation that, if not
avoided, could result in death or serious
injury.
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9
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Operation
4 Operation
This section provides instructions on the proper
use of these gravity-flush toilets.
4.1 Adding Water to the Bowl
Adding water to an empty bowl helps prevent
holding tank odors from entering the living
space. Adding water is recommended prior to
flushing solids and toilet paper.
q
11 Partially Depressing the Flush Pedal
qFlush Pedal
1. To add water to the toilet, depress the flush
pedal part way. Water flows into the bowl
while the flush ball remains closed.
2. If the flush ball moves, let up on the pedal
slightly.
4.2 Flushing the Toilet
NOTICE: Flush only water, bodily wastes,
and rapid-dissolving toilet tissue. Do not flush
foreign objects. Do not flush wet wipes, sanitary
napkins, diapers, paper cups, cotton swabs,
food, hair, or liquids such as oils or solvents.
Failure to follow these instructions could cause
clogging or damage to the toilet or the toilet
system.
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Maintenance
q
12 Fully Depressing the Flush Pedal
qFlush Pedal
1. To flush, depress the pedal until it contacts
the floor.
2. Release the pedal aer a complete flush.
• When flushing liquids, depress the pedal for
approximately 1–2 seconds.
• When flushing solids, depress the pedal
until the contents of the bowl rinses from the
bowl. Flushing longer than necessary will
cause the holding tank to fill too quickly.
A small amount of water will collect in the bowl
aer a flush to create an airtight seal.
IResidual water trickle in the ceramic
bowls: Due to the integrated rim of the
models 310, 311, 320, and 321 toilets,
water may continue to trickle into the
toilet bowl for up to 20 minutes aer
flushing. If the water trickle continues
aer 30 minutes, replace the water valve.
Refer to “Replacing the Water Valve” on
page14.
So that holding tank odors do not enter the
living space, make sure 1 in. (24 mm) of water
remains in the toilet bowl. Depending on the
plumbing system and user operation, adding
water may be required to achieve this water
depth. Refer to “Adding Water to the Bowl” on
page9.
5 Maintenance
Properly cleaning, winterizing, and maintaining
your toilet will increase its lifespan.
NOTICE: If this toilet ever requires service,
read the following statements before servicing
the product. Failure to follow these guidelines
can cause product damage and can void your
warranty coverage:
• Do not separate the ceramic bowl from the
plastic base. Unlike other Dometic foot-
pedal toilets, the bowl and base of the 300,
310, and 320 series toilets should not be
separated for any reason.
• Do not remove the foot pedal from the base.
This toilet has a factory-sealed bowl-to-base
assembly.
• Do not disassemble the components.
• Refer to this manual and replacement kit
instructions for maintenance and service
information.
The toilet does not need to be removed from
the vehicle (or unfastened from the floor) for
basic repairs, like the flush ball seal replacement
and water valve replacement.
If you need to call Dometic for assistance, have
the exact model number available. Refer to
“Model Identification” on page4.
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EN
Maintenance
5.1 Serviceable Parts
This section shows the replacement parts for
the toilet models. Actual available parts may
vary. Refer to the complete parts list (available
online at www.dometic.com) for additional
information. To order parts, contact your local
Dometic service partner or dealer.
q
w
e
r
u
i
y
t
13 300 Series Serviceable Parts
qToilet Seat tPedal Cover
wFlush Ball Seal yT-Bolts
eVacuum Breaker uFloor Flange Seal
rWater Valve iSupply Hose
5.2 Maintenance Kits and Materials
These kits are available for purchase:
• 300/310/320 Series Toilet Water Valve
Replacement Kit
• Flush Ball Seal Replacement Kit
• Vacuum Breaker Kit
Recommended for cleaning:
• SeaLand®Toilet Bowl Cleaner
• So bristle brush
• Rubbing alcohol (300/301 only)
Recommended for winterization/storage:
• Nontoxic antifreeze (propylene glycol)
Optional for troubleshooting:
• SeaLand Holding Tank Deodorant
• Silicone spray
5.3 Performing Routine Toilet
Cleaning
For routine cleaning, use SeaLand toilet bowl
cleaner. If this cleaner cannot be found in your
area, contact Dometic for your nearest dealer. If
the cleaner is not available, use a non-abrasive
bathroom and toilet bowl cleaner. Follow label
instructions.
For stubborn stains on model 300 and 301 toilet
bowls, carefully use rubbing alcohol to wipe and
remove the stain.
5.4 Cleaning the Flush Ball and Seal
Aer a period of time, mineral deposits from
hard water may build up on the flush ball or seal,
resulting in a slow water leak. To prevent this,
periodically clean the flush ball and seal.
w
q
14 Cleaning Debris from the Flush Ball Seal
qFlush Ball Seal wFlush Pedal
1. Remove minor debris from the flush ball and
seal by slowly depressing and releasing the
flush pedal several times. This will loosen
and rinse debris from the surfaces. Repeat
several times for stubborn buildup.
2. If step 1 does not fully clean the ball and seal,
clean with a so bristle brush and SeaLand
toilet bowl cleaner.
– Fully clean the top of the flush ball and
under the seal where it contacts the flush
ball.
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Maintenance
– Aer cleaning the underside of the seal,
apply light, downward pressure to the top
of the seal while brushing around the full
perimeter of the seal.
IIf the ball pivot arm becomes dislodged
while cleaning inside the base beneath
the flush ball and seal, re-engage it into
the pivot point. Refer to Figure 16 for the
location of the pivot point.
IIf this procedure does not correct a
leaking seal, it may require replacement.
Detailed replacement instructions are
included with the replacement flush ball
seal kits.
5.5 Winterizing and Storing the
Toilet
WARNING: POISON HAZARD.
Do not use automotive-type antifreeze
(ethylene glycol) in freshwater systems.
Failure to obey this warning could result
in death or serious injury:
CAUTION: BODILY HARM HAZARD.
This toilet is not intended for use when
exposed to temperatures below freezing.
Failure to obey this caution could result in
minor or moderate injury.
NOTICE: The toilet warranty expressly excludes
coverage for any damages to the toilet or
the vehicle that may occur due to improper
winterization of the toilet. Freeze damage that
results in leaks to the water valve is an indicator
of improper winterization.
5.5.1 Preventing a Frozen Water
Valve
q
w
15 Identifying a Damaged Water Valve
qFreeze Damage wWater Valve Damage
These toilet water valves exceed the applicable
standards for maximum water pressure as
defined by the North American plumbing code
agencies. However, if trapped water freezes in
the piping that supplies water to the toilet, it
expands and creates extremely high pressure
that can damage the valve.
If the freeze damage indicator window (1) has
white stress marks, it indicates freeze-damage.
Water valve damage is due to severe exposure
to below-freezing temperatures.
To avoid damage, winterize the toilet as
described in this manual. If freeze damage
occurs as a result of improper winterization,
replace the water valve with a 300/310/320
series toilet water valve kit.
If the water valve is returned for a warranty claim,
Dometic reserves the right to deny the claim if
the problem is caused by freeze damage.
IUse nontoxic antifreeze (propylene
glycol) designated for potable water
systems (See the vehicle owner’s manual).
When a toilet may be exposed to temperatures
below freezing, the toilet must be winterized
using the “Non-toxic Antifreeze Winterization
Method” on page12 or the “Drain Water
from the Toilet Method” on page13. When
a toilet is stored for long periods of time, or the
water becomes stagnant, flush the system using
the “Drain Water from the Toilet Method” on
page13.
5.5.2 Non-toxic Antifreeze
Winterization Method
IThis is the recommended method.
1. Pour non-toxic antifreeze into the potable
water tank according to the instructions from
the antifreeze manufacturer.
2. Flush the toilet (several times) until the
antifreeze has flowed completely through
the toilet.
IFor toilets with a hand sprayer, the hand
sprayer must be turned on for antifreeze
to cycle through the sprayer.
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Maintenance
5.5.3 Drain Water from the Toilet
Method
1. Turn off the water supply to the toilet.
w
r
qe
16 Removing the Water Supply
qWater Supply Line eSmall Bucket
wWater Inlet Valve rPivot Point for the
Ball Pivot Arm
2. Remove the water supply line from the water
valve.
3. Place a small bucket under the water valve
inlet to catch draining water.
4. Depress the flush pedal and allow water to
completely drain from the water valve and
vacuum breaker.
5. Leave the water line disconnected until the
threat of freezing temperatures is past.
NOTICE: Do not leave the RV unoccupied for
extended periods of time with a municipal water
supply connected, or with the onboard water
pump turned on, when there is a possibility of
freezing temperatures.
5.6 Replacing the Water Valve
Refer to the detailed replacement instructions in
the water valve replacement kit before removing
or installing a water valve assembly.
q
17 Removing the Water Valve Assembly
qWater Inlet Valve Assembly
IIn cold climates, be sure to follow the
winterizing procedure in this manual to
help avoid water valve failure.
5.7 Reconditioning the Flush Ball
Seal
Each toilet is factory-tested to assure a watertight
seal in the toilet bowl. This quality-assurance
testing process requires a device to hold the
flush ball open, which may temporarily distort
the flush ball seal from its original shape. As a
result, it may cause the flush ball seal to leak
water into the holding tank during normal use.
If you discover a water leak into the holding tank,
recondition the flush ball seal into its original
shape.
w
q
18 Reconditioning the Flush Ball Seal
qFlush Ball Seal wFlush Pedal
1. Depress the pedal to hold the flush ball
open, then lightly press down around the
edge of the seal with a finger to conform the
seal to the flush ball.
2. Release the pedal.
3. Keeping the flush ball closed, pour 1 qt
(0.9L) of hot tap water into the toilet bowl.
4. Let the water cool completely.
If the toilet does not hold water in the bowl, refer
to “Troubleshooting” on page15 before you
replace the flush ball seal.
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Maintenance
5.8 Replacing the Flush Ball Seal
Refer to the detailed replacement instructions
in the flush ball seal replacement kit before
removing or installing the seal.
19 Removing the Flush Ball Seal
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Troubleshooting
6 Troubleshooting
Problem Possible Cause Suggested Remedy
Water will not stay in
the bowl.
The flush ball seal is not
properly positioned.
Refer to “Reconditioning the Flush Ball Seal”
on page13.
The flush ball seal’s
shape is temporarily
distorted.
Refer to “Reconditioning the Flush Ball Seal”
on page13.
The flush ball or flush
ball seal is dirty.
Clean and seal the flush ball.
Refer to “Cleaning the Flush Ball and Seal” on
page11.
The flush ball seal is
worn or defective.
Replace the flush ball seal.
To replace the flush ball seal, refer to the
detailed instructions included with the flush
ball seal replacement kit.
Water flow into the
toilet will not stop.
The water valve is worn
or defective.
Replace the water valve.
Refer to “Replacing the Water Valve” on
page13.
Water does not
enter the toilet bowl
properly.
There is an insufficient
water flow rate at the
toilet inlet.
Make sure the flow rate at the toilet inlet
is 3–5 gpm (11.4–18.9 lpm), which is the
recommended rate.
The screen at the water
valve inlet is clogged.
Clean the screen, on the inlet side, using a
cotton swab or an old toothbrush. Do not
disassemble the valve.
The water valve is worn
or damaged.
Replace the water valve.
Refer to “Replacing the Water Valve” on
page13.
There are plugged rim
wash holes or a plugged
rim jet (300 series only)
in the toilet.
Clean the rim wash holes or rim jet.
Odor emits from the
toilet when the flush
ball is open.
The holding tank vent is
plugged.
Clear obstructions from the vent. Refer to the
tank owner’s manual.
The odor is from the
holding tank contents.
Add deodorant to the holding tank.
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Troubleshooting
Problem Possible Cause Suggested Remedy
Odor emits from the
toilet when the flush
ball is closed.
There is no water in the
bowl.
Add water to the bowl.
Refer to “Adding Water to the Bowl” on
page9.
The flush ball seal is
damaged.
Replace the flush ball seal.
To replace the flush ball seal, refer to the
detailed instructions included with the flush
ball seal replacement kit.
The floor flange seal is
damaged.
Replace the floor flange seal.
Refer to “Removing an Existing Toilet” on
page7 and “Installing the New Toilet” on
page8 , using the existing toilet and a new
seal throughout the procedures.
The flush ball will not
close completely.
There is too much
friction between the
flush ball and the seal.
Clean and lubricate the flush ball and flush
ball seal with silicone spray or furniture polish.
The flush ball will not
operate properly.
The ball pivot arm may
have become dislodged
when cleaning beneath
the flush ball and seal.
Re-engage the ball pivot arm back into the
pivot point. Refer to Figure 16 for the location
of the pivot point.
The hand sprayer
leaks.
The hand sprayer is
defective.
Replace the hand sprayer.
Refer to the hand sprayer owner’s manual.
Water is leaking from
the water valve.
The water line
connection is loose or
not seated properly.
Make sure that the threads are not cross-
threaded and tighten the connection.
The water valve is
damaged or defective.
Replace the water valve.
Refer to “Replacing the Water Valve” on
page 13.
Water is leaking from
the toilet base.
The toilet is not secured
to the floor.
Tighten the toilet mounting bolts.
Follow the steps in “Installing the New Toilet”
on page8 .
The floor flange seal is
worn or defective.
Replace the floor flange seal.
Refer to “Removing an Existing Toilet” on
page7 and “Installing the New Toilet”
on page8, using the existing toilet and a
new seal throughout the procedures.
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Disposal
Problem Possible Cause Suggested Remedy
Water is leaking from
the rear of the toilet.
There is a loose vacuum
breaker.
Make sure the vacuum breaker stem is pushed
fully into the sealing grommet in the back of
the bowl (310 and 320 series), or securely
connected to the rim jet (300 series).
The vacuum breaker is
damaged or defective.
Replace the vacuum breaker.
Follow the instructions provided with the new
vacuum breaker.
The supply hose is
damaged or defective.
Tighten the supply hose clamps.
Replace the supply hose.
The toilet bowl is
cracked or defective.
Replace the toilet.
7 Disposal
MPlace the packaging material in the
appropriate recycling waste bins,
whenever possible. Consult a local
recycling center or specialist dealer
for details about how to dispose
of the product in accordance with
all applicable national and local
regulations.
8 Warranty Information
Refer to the sections below for information
about warranty and warranty support in the US,
Canada, and all other regions.
8.1 United States and Canada
LIMITED WARRANTY AVAILABLE AT WWW.
DOMETIC.COM/WARRANTY.
IF YOU HAVE QUESTIONS, OR TO OBTAIN A
COPY OF THE LIMITED WARRANTY FREE OF
CHARGE, CONTACT:
DOMETIC CORPORATION
CUSTOMER SUPPORT CENTER
5155 VERDANT DRIVE
ELKHART, INDIANA 46516
1-800-544-4881 OPT 1
8.2 All Other Regions
The statutory warranty period applies. If the
product is defective, please contact the
manufacturer’s branch in your region (see the
back of the instruction manual for the websites)
or your retailer.
For repair and guarantee processing, please
include the following documents when you
send in the device:
• A copy of the receipt with purchasing date
• A reason for the claim or description of the
fault
Gravity-Flush Toilet