Kohler K-3378-EB, K-3385-EB, K-3402-EB User Manual

5 (1)

SIPHON VORTEX LOW PROFILE ONE-PIECE

TOILETS

INTRODUCTION

This service instruction will help you understand the opera tion and repair of Kohler low profile one piece toilets.

The following models are included in these instructions:

K-3378-EB PILLOW TALK K-3383-EB PALARRE

K-3385-EB ROCHELLE

K-3397-EB SAN RAPHAEL

K-3402-EB RIALTO

K-3408-EB CABERNET

THEORY OF OPERATION

Consider how a low profile, one piece toilet differs from the close coupled toilet. All the water in a close coupled toilet is held in a tank that is above the rim of the bowl. Water to the rim and jet is supplied by gravity.

On the other hand, a one piece toilet holds all the tank water below the rim of the bowl as shown in Fig. #1.

Fig. #1

When the trip lever is actuated, water enters the supply valve and flows to the diverter valve. At this point all line water is diverted to the rim. The tank water is only used to start the water action in the bowl, and to direct water to the upleg of the trapway to start the siphonic action as illus trated in Fig. #2.

Fig. #2

After the flush is completed, the diverter valve directs water to the rim for bowl refill, and to the tank for tank refill.

Since water which only will be directed to the jet is stored in the tank, sufficient water to the rim must be supplied by the supply valve as shown in Fig. #3.

Fig. #3

106423-0290

Kohler K-3378-EB, K-3385-EB, K-3402-EB User Manual

OF OUTLET

I.P.S. SUPPLY

 

K-3378-EB Pillow Talk

Fig. #4

OF OUTLET

I.P.S. SUPPLY

K-3383-EB Palarre

Fig. #5

OF OUTLET

I.P.S. SUPPLY

K-3385-EB Rochelle

Fig. #6

I.P.S. SUPPLY

K-3397-EB San Raphael

Fig. #7

I.P.S.

SUPPLY

OF OUTLET

K-3402-PB Rialto

Fig. #8

K-3408-EB Cabernet

Fig. #9

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ROUGHING IN AND INSTALLATION CONSIDERATIONS

Kohler low profile, one piece toilets are perfect for remodel ing and new installations. Refer to the roughing in draw ings Figs. #4 - #9.

Always refer to your local codes and the installation in structions packed with the toilet.

KOHLER LOW PROFILE ONE PIECE TOILET FEATURES

One piece design offers contemporary styling.

Elongated bowl offers a large water area for efficient waste removal.

Non overflow design prevents the bowl from overflowing if the toilet becomes clogged.

Rialto, San Raphael, Cabernet, and Pillow Talk toilets flush with 3.5 gallons of water for greater economy.

Twist Lock flush valves on new Rialto, San Raphael, Cabernet, and Pillow Talk toilets offer ease of replace ment with no tools.

Siphon vortex action provides excellent flush and quiet operation.

Large water area in bowl aids in effective waste removal.

START UP AND OPERATION FOR RIALTO, SAN RAPHAEL, CABERNET, AND PILLOW TALK TOILETS

For most satisfactory operation of this toilet, 25 to 90 psi working pressure is required at the fixture. A full 1/2" sup ply stop (K-7653) is recommended. A plastic nut is pro vided with the toilet and must be used to make the supply connection to the toilet.

1.Water Level Adjustment: Refer to Fig. #10. Turn on the water supply to the toilet and adjust the water level in the tank to the Water Line mark on flush valve. To raise the water level, turn the tank water level on float valve counterclockwise. To lower the water level, turn the screw clockwise.

2.Bowl Water Level Adjustment: Use the trip chain to lift the flush ball in the tank slightly, to allow water to trickle into the bowl until the water level in the bowl stops ris ing. This is the "seal height" and should be noted for subsequent adjustment. Flush the toilet and observe the water level in the bowl after refill. If the water level is

Tank Water Level

Screw

Timing Screw

Slotted screw on newer models

Seal Screw

Adjusting the Float Valve

Fig. #10

below seal height, turn the seal screw clockwise, reflush the toilet and recheck the water level. Continue adjustment until water stops entering the bowl just as the seal height is reached.

If water continues to flow (in bowl) after water level reaches seal height, turn seal screw counterclockwise and reflush toilet. Continue adjustment until water stops entering the bowl just as the seal height is reached.

3.High Water Pressure Timing: Note: If toilet is installed in an area with high water pressure (above 50 psi work ing pressure), the float valve should be timed. To time the float valve hold the float rod and flush the toilet. After the toilet has completed the flush, time the refill from re lease of rod to valve shut-off.

For K-3397-EB San Raphael, K-3378-EB Pillow Talk, and K-3408-EB Cabernet. If the time is longer than 34 seconds, no adjustment is required. If time is under 34 seconds, turn timing screw clockwise and recheck timing. Adjust timing screw until time is between 34 and 36 sec onds. After timing the valve, recheck the bowl water level as in step #2, to ensure that seal is maintained.

For K-3402-PB Rialto. If the time is longer than 26 sec onds, no adjustment is required. If time is under 26 sec onds, turn timing screw clockwise and recheck timing. Ad just timing screw until time is between 26 and 28 seconds. After timing the valve, recheck the bowl water level as in step #2, to ensure that seal is maintained.

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HOW TO REPAIR THE RIALTO, SAN RAPHAEL, CABERNET, AND PILLOW TALK FLOAT AND FLUSH VALVE.

INTRODUCTION

The following instructions are used to replace the plunger assembly on the flush valve for the San Raphael, Rialto, Cabernet, and Pillow Talk toilets. Refer to Fig. #11.

Screws

Cap Top

Cap

Float Rod

Float Ball

O-ring

Plunger Ass'y

Gasket

Nut

Supply Hardware

Rim Diverter Rim Tube

Float

Float Valve Assembly

Fig. #11

1.Loosen the screws and remove the cap top and cap.

2.Replace the O ring and plunger assembly.

3.Place the cap and cap top back on valve. Tighten with screws.

REPLACING THE TWIST-LOCK FLUSH VALVE

1.Refer to Fig. #12. Turn valve counterclockwise and re move.

2.To install new valve, apply a bead of silicone to the base of the gasket. Insert into hole inside tank. Press down and turn clockwise until valve is in proper position.

Trip Chain

Flapper Hooks

Flush Ball

Gasket

Twist Lock Flush Valve

Fig. #12

REPLACING THE OLD STYLE FLUSH VALVE (RIALTO AND SAN RAPHAEL ONLY)

1.Refer to Fig. #13. Loosen three screws and turn mounting hooks inward. Remove flush valve.

2.Assemble gasket to new flush valve. Position new flush valve with three screws and mounting hooks into hole in tank. Make sure mounting hooks are turned inward. Turn mounting hooks outward and tighten screws.

NOTE: TOILETS WITH OLD STYLE FLUSH VALVES CAN NOT BE FITTED WITH THE NEW TWIST LOCK VALVE.

START UP AND OPERATION FOR ROCHELLE & PALARRE TOILETS

The trip lever assembly actuates the rotor and flush ball to begin flush.

The float valve assembly controls the flow of water through the rotor to the rim holes and tank. The adjusting screw

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