Dometic Sealand 4310 Toilet Owner's Manual

Toilet Model Identification 

The model identification label is located on the inside wall of the toilet under the access cover. It will show the model number and serial number.

Ordering Parts

Dometic is ready to assist you in the event service is required. Before calling, please have the following information available. Your cooperation in having this information ready is appreciated and allows us to better meet your needs. Please refer to the Parts Distributor list in the Customer Service section.

1. Toilet Model Number
2. Serial Number
3. Part Number, Description and Quantity (see separate Parts List)

Toilet Dimensions 

Installation Instructions

System Requirements:

• 4 GPM (15 lpm) or larger water pump.
• 1/2-inch (12.7 mm) water line terminating in 1/2-inch MPT fitting (to connect to toilet water supply hose).
• 4-bolt floor (closet) flange. SeaLand flanges available include 3-inch spigot, socket, MPT, or 45-degree swivel socket.
• 12 VDC through 2-amp fuse or circuit breaker. Use 14-gauge stranded copper wire.

Important: If replacing an existing gravity-discharge toilet, make sure the center of the existing discharge flange is at least 11-1/4 inches from the back wall, then proceed to Step 5 for proper positioning of water line and electrical wiring.

• Step 1: Carefully unpack the toilet bowl, rear access lid and floor flange adapter. CAUTION: HANDLE THE VITREOUS CHINA TOILET AND ACCESS LID WITH CARE. SET THE LID IN AN AREA WHERE IT CANNOT BE BROKEN. PLACE LID ON TOILET ONLY AFTER TOILET INSTALLATION IS COMPLETE.
• Step 2: Position the china bowl in the space intended. Confirm that adequate clearance is available for using the flush handle and opening the seat and lid.
• Step 3: Mark the floor at the rear corners of the toilet bowl (fig. 1). Measure the distance between the two marks and divide by 2 to find the toilet centerline. Mark the floor at the rear wall for the centerline.
• Step 4: Place a carpenter’s square against the back wall, and draw a center line on the floor at least 14 inches (356 mm) long (fig. 2). Mark the centerline for the floor flange at 11-1/4 inches (286 mm) from the wall (fig. 3).

• Step 5A: For through-the-floor water line and electrical wires, mark another centerline 6 inches (152 mm) from the back wall (fig. 4).

• Step 5B: For through-the-wall water line and electrical wires, mark a centerline 8 inches (203 mm) up from the floor centerline (fig. 5).

• Step 6: Make a 4-3/4 inch (121 mm) diameter hole (for most floor flanges) or a 5-1/8 inch (130 mm) diameter hole (for swivel joint floor flange) at the centerline mark furthest from the wall. Make a 1 inch (25 mm) hole at the mark closer to the wall for the water line and electrical wires (fig. 6).

Important: The preferred floor flange installation method is to mount the floor flange directly on the finished floor. However, if the bottom of floor flange and bottom of china toilet must be mounted at different heights, the floor flange must be mounted within 3/8 inch (10 mm) of the bottom of the toilet (see illustrations in next column) or leakage may result.

 

• Step 7: Insert floor flange into larger hole and secure to the floor with #12x3/4-inch long flat head wood or sheet metal screws (fig.7).

• Step 8: Route 1/2-inch (13mm) PEX tubing through the smaller hole and install a PEX 1/2-inch MPT fitting (fig. 8).

• Step 9: WITH THE ELECTRICAL POWER OFF, route #14 gauge stranded copper wire from 12 VDC ground and positive 12 VDC from the fuse panel through a 2-amp fuse or circuit breaker. Leave at least 12 inches (305 mm) of wire for connecting to toilet (fig. 9).

• Step 10: Connect the holding tank to the bottom of the discharge flange.
• Step 11: Slide the four T-bolts into the slots of the floor flange. Install the flange gasket over the T-bolts (fig. 10).

• Step 12: Install floor flange adapter with words “THIS SIDE UP” facing up. Tighten adapter to floor flange using four flat washers and hex nuts. Tighten in criss-cross pattern (fig. 11).

• Step 13: Temporarily set the toilet in place on the floor flange (fig. 14).

• Step 14: Mark the holes for the two toilet mounting bolts (fig. 15).

• Step 15: Pick up toilet and set aside. Drill 3/16-inch pilot holes in the floor (fig. 16).

• Step 16: With toilet close to floor flange, connect flexible water supply hose to the water line fitting (fig. 17).

• Step 17: Connect the positive (+) 12 VDC wire to the red power wire that's connected to the toilet base. Connect the negative (-) 12 VDC wire to the black wire (fig. 18).

• Step 18: REMOVE RED CAP FROM MIDDLE OF FLANGE ADAPTER BEFORE FINAL TOILET INSTALLATION.
• Step 19: Set the toilet in place (fig. 19) and secure to floor with the #14x2-1/2 inch long lag bolts (fig. 20). Install decorative bolt caps by pushing them onto bolt heads (fig. 21).

• Step 20: Place the rear access cover on the back of the toilet. Press down firmly to seat the fastening strips.
• Step 21: Turn on electrical power and water to toilet. Lift flush handle and fill toilet bowl with water. Wait one hour, then inspect the floor around and under the rear of the toilet for leaks or dampness. If no leaks are present, toilet is ready for operation.

Important Information before Operation

1. Fill freshwater tank and add deodorant to holding tank through toilet bowl.
2. Make sure all guests understand the operation of the toilet system. 4300 models: Follow instructions below. 4400 models: "Add Water" and "Flush" are clearly marked on the remote switch. See more information below.
3. Shut off the toilet system before servicing and do not leave the vehicle with toilet system circuit breaker on.
4. Never use drain openers, alcohol, solvents, etc. in the toilet.
5. If the toilet does not function properly, refer to the Troubleshooting section of this manual and repair as necessary. If problem persists, contact your local SeaLand product dealer or see the Customer Service section of this manual.

Toilet Controls

1. Adding More Water To Toilet Bowl: Pull up the flush handle (4300 model) or push "Add Water" switch (4400 model) until the desired water level is attained.
2. Flushing The Toilet: Push the flush handle down (4300 model) or push "Flush" switch (4400 model) for a moment, then release it.

Manual Override: In the event of a power failure, you can use the "Manual Override Lever" to open the flush ball (for toilet use) until power is restored. The flush ball will close only when electrical power is restored.

Proper Cleaning and Maintenance

Clean your SeaLand toilet regularly for maximum sanitation and operating efficiency. You can clean it just as you would a household toilet. Do not use caustic chemicals, such as drain-opening types, as they will damage the seals.

Bowl Cleaning: For stubborn stains, use SeaLand Toilet Bowl Cleaner (Fig. A). It’s made especially for use with SeaLand toilets. Where water is hard, a build-up of lime may dull the toilet bowl finish. Restore the shine with this cleaner. If you cannot find our brand in your area, contact SeaLand Product Customer Service for your nearest dealer. If it is not available, you can also use most nonabrasive bathroom and toilet bowl cleaners (Bar Keeper's Friend® spray cleaner, Clorox® toilet bowl cleaner, SaniFlush® toilet bowl cleaner, etc.). Please follow label instructions.

Seal Cleaning: After an extended time, mineral deposits from hard water can build up under the edge of the bowl seal, resulting in a slow leakdown of water from the bowl. To prevent this mineral build-up, periodically clean under the bowl seal with SeaLand Toilet Bowl Cleaner (Fig. B).

1. Shut off electrical power supply to toilet.
2. Apply cleaner onto a cleaning tool (soft-bristle brush, etc.). Open the flush ball by pressing on Manual Override Lever. Scrub under entire seal, making sure to scrub all parts of seal that come into contact with flush ball.
3. Remove cleaning tool. Wait 2-3 minutes.
4. Use water and cleaning tool to rinse cleaner and loosened deposits away.
5. Turn on electrical power to close flush ball. Water will flow into bowl when power is restored to toilet.

Note: To avoid damaging the Teflon®-coated seal, Do not use: abrasives (Comet®, Soft Scrub® cleansers etc.) caustic chemicals (Drano® clog remover, etc.) lubricants and cleaners containing alcohols or petroleum distillates (Pam® cooking spray, Pine-Sol® cleaner, WD-40® lubricant, etc.).

Winterizing

At the end of each traveling season, the SeaLand toilet system must be winterized for storage. The following procedure should be used:

1. Pump out waste holding tank.
2. Thoroughly flush toilet system with fresh water.
3. Drain freshwater tank.
4. Add freshwater antifreeze to freshwater tank.
5. Flush freshwater antifreeze and water mixture through toilet and into the waste holding tank. Each installation is different so amounts may vary. User discretion is required to assure adequate protection.
6. Turn off electrical power.

Caution: The use of freshwater antifreeze that contains alcohol will result in damage to your sanitation system. Only use propylene glycol freshwater antifreeze that does not contain alcohol.

Troubleshooting

SYMPTOM 1. Toilet will not flush and water will not enter toilet bowl.
Condition: Fuse blown or circuit breaker is tripped:	Possible Causes Check toilet fuse or circuit breaker at DC distribution panel. Check for loose or defective wiring between power source and toilet terminal block pins 5 and 8. Check for reverse polarity of incoming power. Check for defective diode D1 at pin 5 of terminal block.
SYMPTOM 2. Water enters toilet bowl, but toilet will not flush.
Condition: Electrical or mechanical failure related to flush valve:	Possible Causes Check for loose or defective wiring between flush switch and toilet terminal block pins 2 and 3. Flush switch may be defective. Replace if necessary. Check for loose flush ball motor wires at terminal block pins 2 and 8. Flush ball motor may be defective. Replace if necessary. Flush motor drive arm failure.  Drive linkage failure.
SYMPTOM 3. Water will not enter toilet bowl, but toilet flushes.
Condition: Blocked water supply or electrical failure:	Possible Causes Blockage in water line to toilet. Remove line and clear. Filter screen at water valve inlet is clogged with debris. Remove water line and clear debris. Loose or defective wiring between water valve and terminal block pins 1 and 8. Defective water valve. Replace with new water valve.
SYMPTOM 4. Water will not enter toilet bowl when flush handle or remote switch is in “Add Water” position.
Condition: Electrical connection failure:	Possible Causes Loose or defective wiring between flush switch and terminal block pins 1 and 3. Defective flush switch. Replace with new flush switch.
SYMPTOM 5. Water will not shut off and overflows toilet bowl.
Condition: Water valve-related failure:	Possible Causes Debris in water valve. Defective water valve. Replace with new water valve.
SYMPTOM 6. Flush ball constantly cycles between open and closed position.
Condition: Component adjustment required or defective component:	Possible Causes Cam switch needs adjustment. Cam switch is defective.  Drive linkage defective.  Shorted wiring between flush switch and terminal block pins 2 and 3. Flush switch is defective.
SYMPTOM 7. Flush ball opens slowly and will not open when manual flush lever is pressed.
Condition: Component adjustment required or defective component:	Possible Causes Flush spring is defective. Replace. Excessive drag between flush ball and flush ball seal. Lubricate flush ball and seal with silicone spray.
SYMPTOM 8. Flush switch must be held in “Flush” position to close flush ball.
Condition: Defective electrical component:	Possible Causes Loose or defective wiring between cam switch and terminal block pins 2, 3 and 6. Cam switch is defective.
SYMPTOM 9. Flush ball will not close completely.
Condition: Component adjustment required or defective component:	Possible Causes Cam switch needs adjustment. Cam switch is defective.  Rotor shaft cam is loose or defective.  Drive linkage is worn.
SYMPTOM 10. Flush ball will not open completely.
Condition: Component adjustment required or defective component:	Possible Causes Rotor shaft cam is loose or defective.
SYMPTOM 11. Squeaky noise occurs when flush ball is opening.
Condition: Lubrication of component(s) is required:	Possible Causes Drive arm/drive linkage joint needs lubricated with silicone grease. Flush ball and seal needs lubricated with silicone spray.
SYMPTOM 12. Water will not stay in bowl (leaks down through flush ball seal).
Condition: Incomplete seal between flush ball and Teflon® seal:	Possible Causes Cam switch needs adjustment Mounting bolts that hold base assembly to ceramic toilet need tightened. Caution: Excessive tightening of bolts can damage toilet. Flush ball seal is worn and needs replaced.  Flush ball is worn and needs replaced.
SYMPTOM 13. Toilet flushes in both “Add Water” and “Flush” switch positions.
Condition: Defective electrical component:	Possible Cause Diode D2 on terminal block pins 1 and 2 is defective. Replace with new diode.
SYMPTOM 14. Water will not enter toilet bowl during “Flush” cycle.
Condition: Defective electrical component:	Possible Cause Diode D2 on terminal block pins 1 and 2 is defective. Replace with new diode.
SYMPTOM 15. Water is leaking from toilet onto floor.
Condition: Loose connection or defective component:	Possible Causes Loose water line connection. Tighten connection. Loose or defective vacuum breaker. Replace if defective. Defective water valve. Replace with new water valve. Bowl seal is defective and needs replaced.  Mounting bolts that hold base assembly to ceramic toilet need tightened to 20-25 in.-lbs. of torque. Caution: Excessive tightening of bolts can damage toilet.

Parts List