Dometic 300 Series User manual

300 Series 310 Series 320 Series
EN Gravity flush toilet
Instruction manual
ES
FR
Inodoro con descarga por gravedad
Manual de instrucciones
Toilette à évacuation gravitaire
Mode d’emploi

IF SERVICE OF THIS TOILET IS EVER REQUIRED,
READ THIS BEFORE SERVICING PRODUCT.
DO NOT REMOVE TOILET FROM VEHICLE.
DO NOT SEPARATE CERAMIC BOWL FROM PLASTIC BASE.
DO NOT REMOVE FOOT PEDAL FROM BASE.
DISASSEMBLY OF COMPONENTS MAY VOID WARRANTY.
SEE MANUAL AND REPLACEMENT KITS FOR SERVICE INFORMATION.
Dometic Corporation
Sanitation Division
Call Customer Service: 1-800-321-9886 (8 a.m. – 5 p.m. ET)
STOP
TOILET DOES NOT NEED TO BE REMOVED FROM VEHICLE FOR BASIC REPAIRS (if necessary)
Flush ball seal – Dometic’s
ball seal allows future replacement of
worn or damaged ball seals without
requiring tools or toilet disassembly.
The ball seal can be changed in just
a few minutes without removing the
toilet from the oor. Detailed replace-
ment instructions are included with
replacement ball seal kits.
Snap-in water valve cartridge –
Allows easy replacement of worn
or damaged water valves. In cold
climates, be sure to follow winterizing
procedure in owner’s manual to help
avoid water valve failure. Refer to
replacement instructions in new water
valve kit prior to Removal or installa-
tion of water valve assembly.
Factory-sealed bowl-to-base
assembly – Unlike other
Dometic foot-pedal toilets, the
bowl and base of 300, 310,
and 320 series toilets should
not be separated for any
reason.
IMPORTANT INFORMATION
EN

IF SERVICE OF THIS TOILET IS EVER REQUIRED,
READ THIS BEFORE SERVICING PRODUCT.
DO NOT REMOVE TOILET FROM VEHICLE.
DO NOT SEPARATE CERAMIC BOWL FROM PLASTIC BASE.
DO NOT REMOVE FOOT PEDAL FROM BASE.
DISASSEMBLY OF COMPONENTS MAY VOID WARRANTY.
SEE MANUAL AND REPLACEMENT KITS FOR SERVICE INFORMATION.
Dometic Corporation
Sanitation Division
Call Customer Service: 1-800-321-9886 (8 a.m. – 5 p.m. ET)
TOILET DOES NOT NEED TO BE REMOVED FROM VEHICLE FOR BASIC REPAIRS (if necessary)
Factory-sealed bowl-to-base
assembly – Unlike other
Dometic foot-pedal toilets, the
bowl and base of 300, 310,
and 320 series toilets should
not be separated for any
reason.
Each Dometic toilet is factory-tested to assure a
watertight seal in toilet bowl before it is shipped.
After installation at the RV or other vehicle factory, the
entire toilet system is tested for leaks. This process
requires holding the ush ball open with a device which
may temporarily distort the ball seal from its original
shape and, as a result, cause the seal to leak water into
the waste tank during normal use. The ball seal may need
to be reconditioned to its original shape.
IF NEW TOILET DOES NOT HOLD WATER IN BOWL…
Please follow the procedures below before attempting to
replace the seal.
1. Hold ush ball open by pressing on pedal.
2. Using nger, apply moderate downward pressure around
edge of ball seal.
3. Close ush ball.
4. Keeping ush ball closed, pour one quart of hot tap water
into toilet bowl.
5. Let water cool completely.
6. Check for leak.
If leak still persists, ush ball seal should be replaced.
Follow instructions provided with replacement seal kit.
IMPORTANT INFORMATION

3
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A
B
C
D
E
G
H
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J
F
4
A B
C
2
A
B C
EG
F
D

1 Notes on using the manual
Caution!
Safety Instruction: Failure to observe this instruction can cause
material damage and impair the function of the device.
Note
Supplementary information for operating the device.
g. 1A : This refers to an element in an illustration. In this
example, item A in gure 1.
2 General safety instructions
The manufacturer will not be held liable for claims for damage resulting from the
following:
• Faulty installation or connection
• Damage to the unit from mechanical inuences, misuse or abuse
• Alterations to the unit without express written permission from the
manufacturer
• Use for purposes other than those described in this manual
2.1 Warnings
The following statements must be read and understood before installing,
servicing and/or operating this product. Modication of this product may result in
property damage.
1. Do not use chlorine or caustic chemicals, such as laundry bleach or
drain-opening types, in the system.These products damage the seals in
toilets and other plumbing valves.
2. Do not permit foreign objects (paper towels, paper cups, diapers, sanitary
napkins, etc.) to be ushed through the toilet.
3. Mechanical seal toilets are designed to only discharge directly into a holding
tank. Horizontal pipe runs as found in conventional residential or commercial
plumbing systems cannot be accommodated.

4. Toilet bowl must be regularly cleaned and winterized according to “Cleaning”
and “Winterization and storage” procedures or your warranty coverage may
be voided.
3 Intended use
Dometic 300, 310 and 320 series toilets provide lightweight, residential-size
toilets for installation directly above a holding tank.
3.1 Benefits
PowerFlush technology. Improved pressurized rim ow creates high-speed
vortex of water for full bowl rinsing.
Premium user comfort. Full-size seat and deep bowl result in greater
homelike performance.
Easy installation. Two-bolt design ts most existing toilet oor anges – great
for new or replacement installations. Just place on oor ange, tighten bolts,
connect water, and it’s ready.
Ergonomically enhanced pedal operation. Lower pedal height for easier
use; “one-direction” action to add water and ush.
4 Specifications
4.1 Materials
Materials
Toilet bowl: vitreous ceramic (models 310, 311, 320, 321);
polypropylene (models 300, 301)
Toilet seat: polypropylene (models 300, 301, 310,311);
enameled wood (models 320, 321)
Flush ball seal: nitrile butyl rubber
Toilet base and foot pedal: polypropylene
Water valve: polypropylene
Vacuum breaker: ABS/polypropylene
Floor seal: nitrile rubber, foam

4.2 Minimum installation requirements
Water
Supply
Fitting 1/2 in. NPT
Flow rate 3.0-5.0* gpm / 11.4-18.9 lpm recommended
2.0 gpm / 9.5 lpm minimum
Static pressure 30-100 PSI / 206.8-689.5 kPa
Discharge Floor ange 3 in./76 mm ID, 1/4-7/16 in. (6-11 mm) thick
* Water supply that exceeds 5.0 gpm / 18.9 lpm may require a ow restrictor at toilet inlet.
Specications subject to change without notice.
4.3 Rough-in dimensions (g. 2)
Ref.
Dimensions/Description
Model 300 Model 301 Models 310,
311
Models 320,
321
A 8.5 in. / 216 mm 8.75 in. / 222 mm 10 in. / 254 mm 11 in. / 279 mm
B 11 in. / 279 mm
C 11 in. / 279 mm
D Floor ange
E Left wall
F Back wall
G Right wall

5 Components (g. 1)
Ref. Description
AToilet seat
BFlush ball seal
CToilet bowl
DToilet base
EFlush pedal
FFloor ange seal
Ref. Description
GVacuum breaker
cover (310, 311
only)
HVacuum breaker
IWater valve
JFloor mounting
hardware kit
Refer to complete parts list (avail-
able online at www.dometic.com)
for additional information.
6 Installation
Note
Be sure foot pedal, when pressed, touches same at surface on which
toilet is installed.
Note
Be sure to follow recommended installation requirements in section
4.2 of this manual.
6.1 Tools required
• pliers or adjustable wrench
• 7/16-in. / 11 mm wrench

6.2 Toilet installation
1. To replace an older toilet, turn off water supply to toilet. Remove and
drain water supply line. Remove toilet hold-down bolts/screws. Remove
toilet from oor. Remove and discard old oor ange seal and hold-down
bolts. Verify center of oor ange is at least the recommended rough-in
distance from back wall (g. 2A) for your toilet model (see Rough-in
dimensions chart). Make sure top surface of oor ange is clean and free
of any debris or sealant.
2. If installing a new oor ange, make certain that toilet mounting holes are
located at the correct angle (g. 2D). Floor ange must be secured to
oor with a minimum of four screws (8 are preferred). Insert two supplied
T-bolts into slots in oor ange (g. 3).
3. Verify that oor ange seal is installed on base of toilet (g. 4A).
Carefully set toilet over oor ange. Align holes in toilet base with T-bolts
as toilet is lowered onto oor ange. Toilet must be aligned so that outlet of
base ts inside of oor ange outlet hole.
Note
Entire toilet base does not rest completely on oor yet. Floor seal
must be compressed in following steps.
4. Install oor mounting nuts and washers onto T-bolts. Carefully torque nuts
to 30-40 inch-pounds. DO NOT OVERTIGHTEN. Alternate between sides
when tightening to prevent distortion of base. When tight, base should be
securely attached and at against oor. Attach bolt covers onto nuts.
(Fig. 4B)
5. If toilet is being installed in a shower stall, apply a bead of caulk around
base of toilet to prevent water seepage under base.
6. Connect water supply line and torque connection to 30-40 inch-pounds.
DO NOT OVERTIGHTEN. (Fig. 4C)
7. Turn on water supply line. Flush toilet several times and check for leaks.

7 Operation
7.1 Add water to bowl
To add water to the toilet,
press the ush pedal part
way down. Water ows into
the bowl while ush ball
remains closed. If the ush
ball moves, let up on the
pedal slightly. Adding water
to an empty bowl helps pre-
vent holding tank odors from
entering the living space.
Adding water is recommended prior to ushing solids and toilet paper.
7.2 Flush toilet
To ush, press pedal down until it contacts the oor. Release pedal after
complete ush.
• When ushing liquids, press the pedal for 1-2 seconds.
• When ushing solids, press pedal until contents are rinsed from bowl.
Flushing longer than necessary will cause holding tank to ll too quickly.
A small amount of water will collect in the bowl after a ush to create an airtight
seal.
Note
Residual water trickle in ceramic bowls: Due to integrated rim of
models 310, 311, 320 and 321 toilets, water may continue to trickle
into toilet bowl for up to 20 minutes after ushing. If water trickle
continues after 30 minutes, replace water valve.
Note
To ensure holding tank odors do not enter the living space, make
sure 1 inch (24 mm) of water remains in the toilet bowl. Depending
on variations in plumbing systems and user operation, the “add
water” function may be required to achieve the 1-inch water depth.
Flush directions are located under
toilet seat lid.