Toto CST446CUMFG Installation instructions

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Installation and Owner’s Manual
Manual de instrucciones y del propietario
Manuel d’installation et d’utilisation
Dual-flush Toilet
Inodoro de doble descarga
Toilettes à double chasse d’eau
CST446, CST446F

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COMMON TOOLS NEEDED
TABLE OF CONTENTS
THANKS FOR CHOOSING TOTO!
The mission of TOTO is to provide the world with healthy, hygienic and more
comfortable lifestyles. We design every product with the balance of form and
function as a guiding principle. Congratulations on your choice.
INCLUDED PARTS
Thanks for Choosing TOTO! ..............................................................................2
Included Parts ......................................................................................................2
Common Tools Needed......................................................................................2
Before Installation................................................................................................3
Installation Procedure..........................................................................................4
Care and Cleaning...............................................................................................7
Replacing the Fill Valve .......................................................................................8
Adjusting the Water Level...................................................................................8
Servicing Fill Valve ...............................................................................................9
Servicing Flush Valve .........................................................................................10
Warranty..............................................................................................................11
Toilet
Tank to Bowl Mounting Hardware
Rough-in
Bowl Mounting hardware
Template
Manual
Unifit Rough-in Instruction
Rough-in Mounting Hardware
10” adjustable wrench
Carpenters’ level
Hacksaw
Tape measure
Hand pliers
Flat head screwdriver
Phillips screwdriver
Pencil
Putty knife
Drill
Drill bits (mounting block)
For wood floor installation:
- ” drill bit
For concrete/tile installation:
- ” drill bit
Check to make sure you have the following parts included in your package*:
* Actual parts may appear different from drawing according to the model.
Flexible supply hose
Angle stop valve
Wax ring
MATERIALS REQUIRED:
(Not Included)

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BEFORE INSTALLATION
Read these instructions thoroughly before beginning work.
Please leave instructions for customers. These instructions contain
maintenance and warranty information.
If necessary, remove the existing toilet and if new construction, purge the
supply line.
Due to the powerful performance of our Tornado, G-Max, E-Max and Power
Gravity flushing systems, they are not specified for back-to-back installations.
The only means of installing these toilets in a back-to-back situation is when
the toilet drain connections incorporate a WYE fitting. Please contact your
builder or contractor prior to this installation.
Double Combination WYE / 1/8 Bend
YES Double Sanitary Tee / Sanitary Cross NO
NOTICE
Water supply shut-off valve installation recommendations
Follow these recommendations to ensure an optimal and trouble-free
installation with a neat and professional appearance.
Location
(From floor and left of
center of floor flange)
4-3/4” x 4-3/4” (120mm x 120mm)
Valve type
Angle stop type valve with supply connection
facing upward, inward, or downward
NOTE: Straight stop type valve, or valve with
supply connection on front of angle stop, is not
recommended
Maximum length Angle stop must protrude less than 3-1/2” (90mm)
from wall
Centerline of
Stop valve
Finished wall
4¾”
(120mm)
Centerline of
Flange
4¾”
(120mm)
3½”(90mm) MAX
“RI”

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Screw
Washer
Nut
Wax seal
INSTALLATION PROCEDURE
1. Open the Unifit Rough-In packaging.
Follow the Unifit Rough-In
Installation instruction to complete
the rough-in installation (ill. 1).
2. Place the template into position and
follow its instructions to prepare for
installing the toilet bowl.
Do not move the Unifit Rough-
In on the Floor Flange after
wax seal is set. If this notice is
disregarded, discard the wax ring
and replace with new wax ring.
3. Place the toilet bowl over the Unifit
Rough-In and the two mounting blocks,
by aligning the bowl outlet with the
Unifit Rough-In opening (ill. 2).
4. Align the toilet perpendicular to the
back wall and parallel to side walls; it
should not sit crooked or diagonal (ill. 3).
Mounting block
Insert the toilet all the way
into position. If this notice is
disregarded, leakage may result.
NOTICE
NOTICE
ill.1
ill.2
ill. 3

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6. Install the tank-to-bowl mounting
hardware to the tank (ill. 5).
Do NOT overtighten
hardware, as it may break
the china and cause
personal injury or property
damage.
7. Place the tank upside down onto
some padding. Inspect the smaller
fill valve nut and larger flush valve nut
for a secure connection (ill. 6). Try to
tighten the nuts with your hands. If
loose, tighten the nut hand tight and
an additional 1/4 turn for the smaller
fill valve nut and an additional 1/2
turn for the larger flush tower nut.
Make sure that the fill
valve does not turn
and hit the tank while
tightening.
8. Connect the water supply hose (not
provided) to the fill valve (ill. 5).
The water supply hose
must be connected to
the fill valve BEFORE the
tank-to-bowl installation.
TOTO recommends
using a longer flexible
supply hose.
9. Place the tank-to-bowl gasket onto
the flush tower nut (ill. 7). While
pressing down, spread the gasket
over the nut until the gasket touches
the bottom of the tank. A slight gap
between the tank bottom and the
gasket is allowable.
INSTALLATION PROCEDURE
⚠CAUTION
Nut
Metal washer
Rubber washer
Bolt
Cap Side-screw
Cap
Side-screw
ill. 4
5. Install the side screws to the
mounting blocks. Cover the
screw head with the provided
screw caps (ill. 4).
Flush valve nut
Fill valve nut
ill. 6
ill. 5
NOTICE
NOTICE

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10. Pick up the tank and carefully guide
the water supply hose over the
bowl’s fill valve hole, align the tank-
to-bowl gasket over the inlet of the
bowl, and align the tank bolts over
the bolt holes of the bowl.
11. Using provided tank-tight nuts,
hand tighten the nuts evenly until
tank sets snugly on each of the 3
contact points on the bowl (ill. 8).
Do not overtighten
the mounting bolts.
Overtightening may
break the china and cause
personal injury and/or
property damage.
12. Install the flexible water supply
hose to the angle stop (ill. 9). Make
sure that the hose is free of kinks.
⚠CAUTION
INSTALLATION PROCEDURE
Tank-tight nut
50mmradiusminimumMakesuretherearenokinks
ill. 9
Tank to Bowl
Gasket
Fill valve nut
Flush valve nut
ill. 7
1
3
2
Points of Contac t
ill. 8

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INSTALLATION PROCEDURE
Push buttons
Tank lid
Left Right
Full
Flush
Partial
Flush
Clip
Locknut
Clockwise/
counter-clockwise
Push button assembly
Lid
Flush valve
13. Carefully place the lid on top of the
tank, making sure that the full flush push
button is on the left side (ill. 10).
14. If necessary, adjust the length of the push
button rods. They are factory set to the
correct length, so only follow these steps
if applicable to your situation.
If the push button rods are too short,
the push buttons will not sit properly. If
the push button rods are too long, the
push button may continuously activate
the flush valve. Correct with the following
steps (see ill. 11):
1. Loosen the lock nuts counter-
clockwise.
2. Turn the rods clockwise to shorten,
counter-clockwise to lengthen (each
full turn is 1mm).
3. Place the lid on the tank to check the
adjustment.
4. When the adjustment is completed,
tighten the lock nut to secure.
15. Turn on the water supply at the angle
stop. Check ALL connections for leaks.
Fix as needed.
16. The toilet seat is installed with the seat
top mounting hardware. Refer to the seat
installation instruction.
ill. 10
ill. 11
Flush valve
Left
Right
CARE AND CLEANING
Use a detergent or non-abrasive toilet cleaner and a soft bristled
plastic brush to clean your toilet. To remove hard water stains, use
vinegar or lime dissolving cleaner and a non-scratch scour pad
made for porcelain. Allow a little contact time to allow the cleaner
to dissolve the buildup.
Do not spray cleaner directly onto the button on the top of the tank, instead wipe it
using a dampened soft cloth with diluted dishwashing detergent and dry it with
another soft cloth. Do not use bleach or products that include acid or alkaline
detergents in their ingredients. Do not use metal scrub brushes or steel wool.

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REPLACING THE FILL VALVE
Flexible hose
Coupling nut
Nut
Washer
Cone seal
1.
Shut off the water supply. Flush the toilet
and remove any remaining water from the
tank. Reverse the tank installation instruc-
tions to remove it from the bowl. Remove
the old fill valve.
2.
Install new fill valve by sliding the thread-
ed portion of the shaft through the hole
in the bottom of tank.
3.
Thread mounting nut onto exposed shaft
under the tank and tighten nut.
Do not over-tighten.
4.
Connect the water supply (see Ill. 1). Pipe
dope is not recommended. Attach the
refill tube to the valve and clip the other
end to the overflow pipe.
Refer to the water level line stamp inside the
tank.
1. The water level adjustment is located
in the top end of the fill valve. Use
a flathead screwdriver to make
adjustments:
• To raise the water level: turn the
screwdriver clockwise, or towards
the ‘+’ indicator.
• To lower the water level: turn the
screwdriver counter-clockwise, or
towards the ‘-’ indicator.
2. Flush after each adjustment to check
the water level. When satisfied with the
water level, flush once more to verify.
Ill. 1
ADJUSTING THE WATER LEVEL
⚠CAUTION
water level adjuster
Ill. 1
CARE AND CLEANING
DO NOT USE IN-TANK BOWL CLEANERS.
The use of high concentration of chlorine or chlorine-related products can
seriously damage fittings in the tank. This damage can cause leakage and
property damage. TOTO shall not be responsible or liable for any tank fitting
failure or damage caused by the use of in-tank bowl cleaners.
NOTICE

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1
2
1
2
3
1. Snap off the top cover by pulling from under the tab (see ill. 1).
2. Pinch the tabs of the lever arm to allow its removal (see ill. 2).
3. Snap off the adjustable rod from the bracket (1) allowing the unit to
slide to the bottom and remove the retainer tab by pulling as the arrow
indicates (3) (see ill. 3).
4. Grab hold of the valve unit, twist 1/4 turn counterclockwise and pull the
unit out (see ill. 4).
5. Unscrew nut of the diaphragm housing (see ill. 5).
6. Remove the diaphragm from its housing by carefully pulling the edge
of the diaphragm (see ill. 6). Note the position of the diaphragm while
removing.
7. Remove the strainer from the tube with needle nose pliers (see ill. 7).
Use twisting motion while pulling to help with removal.
8. Rinse all parts under running water to clear any debris, residues or films.
Reinstall all parts in reverse order. Turn the water ON and check for leaks
and operation.
Ill. 1 Ill. 2 Ill. 3
Ill. 6
SERVICING THE FILL VALVE
Ill. 4
Ill. 5
NOTE: Due to water conditions in your area, the strainer may require periodic clean-
ing. An indication that the strainer requires service can be seen in a delayed fill cycle,
intermittent fill cycle, or inadequate amount of water flow from the refill tube.
1
2
Ill. 7

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SERVICING THE FLUSH VALVE
1. Turn off water supply and flush the toilet.
2. Remove the tank lid and place it upside down on a clean surface.
3. Note the orientation of the flush valve for reassembly.
4. Turn the upper half of flush valve counter-clockwise and pull it up to
remove it (see Ill. 1).
5. Remove the rubber seal gasket and rinse under running water to clean
(see Ill. 2).
6. Place the gasket back on the flush valve (see Ill. 3).
7. Install the flush valve back on the base.
8. Rotate the flush valve so that the partial flush button is on the right and
the full flush button is on the left.
9. Carefully, install the tank lid back on the tank.
10. Flush the toilet several times using each push button to verify proper
operation. Check for leakage.
Ill. 2 Ill. 3 Ill. 1