THETFORD 31646 Permanent RV Toilet Fresh Water Flush Instruction Manual

June 7, 2024
THETFORD

Permanent RV Toilet
Fresh Water Flush

THETFORD 31646 Permanent RV Toilet Fresh Water Flush

Operation

THETFORD 31646 Permanent RV Toilet Fresh Water Flush -
Operation

Record Your Product ID Information Here
See Parts page for location of Product ID/serial number labels.
Model
NOTE: Removal of Product ID/ serial number label can void your warranty.

Trouble Shooting

  1. Leaks:
    A. Back of toilet: check water supply line connection at water valve. Resecure or retighten as necessary. If leak persists from the water valve, replace it.
    B. Vacuum breaker leaks while fl ushing: replace Vacuum Breaker or water module, depending on the model.
    C. Between closet flange and toilet: check flange nuts for tightness. If the leak continues, remove the toilet and check fl range height. Use Thetford spacers to adjust, if necessary, to  7/16” above floor. Replace fl range seal.

  2. Toilet won’t hold water:
    A. Check for and remove any debris from the blade/ball seal track.
    B. Check blade/ball seal compression with the mechanism. If the blade/ball seal is worn, replace it.

  3. Harder than normal pedal or hand lever operation:
    Apply a light film of Thetford Toilet Seal Lubricant & Conditioner or silicone spray to blade/ball. (Note: To avoid damage do not use spray lubricants other than silicone.)

  4. Poor flush: Pedals or hand levers must be held fully open during flush. A good flush should be obtained within 2 to 3 seconds. If the problem persists, remove the water supply line and check the flow rate.
    The flow rate should be at least ten quarts (9.5 liters) per minute.

Winterizing

Draining Method
Turn off RV’s water supply. Drain toilet bowl. Disconnect supply line at water valve. Completely drain the toilet’s water supply line.
CAUTION: To avoid damage, when using air pressure to blow water from lines, be sure the toilet valve is open.
CAUTION: If water is frozen in the toilet, do not attempt to flush until ice thaws.
Antifreeze Method Use RV(potable) antifreeze only.
CAUTION : Never use automotive-type antifreeze.

THETFORD 31646 Permanent RV Toilet Fresh Water Flush -
Operation

Installation

Required Tools

  • Adjustable wrench
  • 1/2” ratchet or box wrench If carpeted:
  • Carpet cutting tool
  • Marker or chalk

Plumbing required:
For adequate flush, a 3/8” I.
D. water supply line with good flow is required
Procedure

  • Remove old toilet and closet flange seal.

  • Attach new closet flange seal to the new toilet, lip side down (Fig. 1).

  • STYLE Plus and Bravura only: Remove shroud from the base of the unit (Figs. 3 & 4).
    With mounting bolts in place, position toilet over closet flange (Fig. 2). If not carpeted, go to Step 5.

  • If carpeted, trace around the toilet, remove the toilet and cut away the carpet to expose the floor. The carpet beneath the pedal may also need to be removed.

  •  Reset toilet. Using bodyweight, press toilet to the floor.

  • Tighten nuts until the toilet is stable. Do not overtighten.

  • Connect the water line to water valve/ elbow using 1/2” NPT tube fittings.

  • Turn on water and flush. Check for leaks.

  • Bravura only: Install Shroud (Fig. 3). STYLE PLUS only:
    Attach shroud to toilet by depressing pedal and placing the pedal opening over the pedal and pushing it firmly against the base. Press the sides of the shroud to the toilet and attach two O-rings on the hooks to secure it. Make sure to engage dual lock under the front of the shroud by tapping the shroud above the pedal (Fig. 4).

Removal
Follow the installation directions in reverse order.

Deodorizing
This toilet was designed to be compatible with Thetford brand holding tank deodorants.
Cleaning
Use Thetford Aqua-CleanTM nonabrasive cleaner with a soft-bristle, non- abrasive bowl brush, sponge or soft cloth. DO NOT USE SCOURING POWDERS, ACIDS, OR  CONCENTRATED CLEANERS, WHICH CAN DAMAGE SURFACES, PLASTIC PARTS, AND RUBBER SEALS. FAILURE TO DO SO CAN VOID YOUR WARRANTY.

THETFORD 31646 Permanent RV Toilet Fresh Water Flush
-Cleaning

Options
Thetford Toilet Riser

  • Increases comfort
  •  Raises toilet 2.5 inches
  • Fits all Aqua-Magics and Bravura

Hand spray
(Option with Bravura, Aqua-Magic V, AquaMagic STYLE & AquaMagic Residence)

  • Easy to attach to the existing water valve

Dimensions

THETFORD 31646 Permanent RV Toilet Fresh Water Flush
-DimensionsTHETFORD 31646
Permanent RV Toilet Fresh Water Flush -Parts

Parts

Before ordering parts, record the Product ID information. Specify High or Low.
No. Description

1. Seat and Cover (sold as set only)
2. Vacuum Breaker*
3. Flush Tube
4. Flush Nozzle Assy.
5. Hand Spray Kit (Water Saver Option Only)
6. Mechanism Assembly
7. Closet Flange Seal & Bolt Package
8. Water Module/Water Valve
9. Water Valve Link
10. Water Valve Drive Arm| 11. Cable Replacement Pkg.†
12. Pedal Pkg. †
13. Return Spring (Style Plus)
14. Waste Ball
15. Blade Seal
16. Bowl
17. Shroud (specify high or low)
18. Bolt Caps
19. Shroud O-Rings
20. Waste Ball Drive Arm
21. Pedal Cover Insert† Pedal Flush only
---|---

*In the event of Vacuum Breaker failure the Vacuum Breaker Assembly must be replaced.
Looking for dependable RV plumbing? Rely on Thetford for quality and long- lasting products.

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