Kohler 4179A-NA User manual

1112039-A02-I Apr 2019 1 Kohler New Zealand
BeforeYou Begin
Tools and Materials
Thank You For Choosing Kohler Company
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The product information contained in this publication is correct at the time
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cha car ter itsi cs cap, kagin vadnag ailabilit wemitynatay it tuoh furthe .ecitonr
aelcevisorrocesutonoD ne noronistnevlosrosr the tank yamsihT. da egam
the tank. Do not use any spare parts which are not suppled .relhoKyb
Kohler will not be responsible for any damage due to the installation
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This product is designed for a water supply pressure range of 20 psi
(137kPa) minimum to 80psi (550 kPa) maximum.
Any installations where the supply pressure is outside of these limits
will not be covered by warranty.
Warning
Installation Instructions and
Home Owner’s Guide
Mechanical In-Wall Cistern
With Frame (Slim)
4179A-NA
477A-CP 75981T-CP
8857A-CP 75890T-CP

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Features

 .leveltelniretawelbatsujdA



Advantages of In Wall Cistern
 Corrosion resistant and leak
proof design.

 Easy installation for stud.
 Easy maintenance.
 Space saving.
Rough-in
10-200
300
1107 - 1297
230
180
35 135
438
478 88 MIN.
Unit: mm
90 MIN.
63
0-140 400kg
400+10
llaw-niehtfonoitallatsnirofsnoisnemid)tekcopduts(ytivacmuminiM.1
tank, 553mm wide, 90mm deep.
Installation procedures for an In wall cistern in a stud wall

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2. Loosen the nut securing the adjustable bracket and extend to their full
supplied with the tank. Use lubricant as required and ensure enough of
the screw is explosed to mount and secure the toilet.
Nut
Allen Key
Adjustable
Bracket
3. Place the frame into the cavity (stud pocket), ensuring the front face of
base plate with coach tek screws M8 (not supplied).
Coach Screw Base Plate

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4. Loosen the nut securing the adjustable bracket and adjust the height of
the frame to the dimensions stated in the toilet manufactures instructions.
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Nut
Allen
Key
Adjustable Bracket
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Rear View
Nog
Front View
Fixing hole
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Nog
Vertical Stud
Pencil
7. Fix the nog to the studs.
Nog
Nog
Fixing Hole
Coach/Tek
Screw M8
(Not Supplied)
8. Aach the frame to the nog and also the studs at all 6 fixing hole points.
Use minimum M8 coach/tek screws (not supplied).
Stud
1
2
3
4
5 6

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9. Loosen the rotcennocepipetsawehttiF.deriuqerfitroppusepipetsaw
.troppusrotcennocepipetsawehtkcoldnanethgit
ehtmorfthgiehtcerrocehteraepipetsaw
.yrasseccenfitsujdadnasnoitcurtsnisrerutcafunam
.telniretawknatehtot)deilppuston(

the fr evotema rify the pan height
Cutthegibboardto suit the position
Fit the gib board to the stud.
Gib Board
Flush Plate Shield
Screw
Flush Plate
Shield
Knife
13. Using a sharp knife. Trim the flush plate
shield back level with the finished wall. If
the finished wall is to be tiled, please ensure
the thickness of the tile is included. The trimmed
flush plate shield must sit flush with the finished
wall.
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15. Fit flush pipe connectors and
rotcennocepipetsawehttiF.teliot
teltuoepipetsawehtotteksagdna
on the toilet.
16. Mark on the pipe connectors
sopeht it fonoi th foraere th .teliote
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Gasket
Flush Pipe
Connector
Waste Pipe
Connector
Gasket
Ruler
Pencil
nokraM.71 the pipe connectors a second line, which represents the
ehtneewtebecnatsidehtsiecnatsidnoitcennocsihT.llawehtnihtiwsepip
rear of the tank and the hole in the gib board.
Waste Pipe Mark Showing Position of Toilet Rear Flush Pipe
Connection Distance
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18. Cut both the waste pipe and
fl hsu pipe at the conn sidnoitce ta ecn
marks. Rem llaevo burrs from the
cut edges and reinstall on the toilet.
19. Place the toilet onto the fixing bolts. (Ensure the toilet is supported at all
ehtotnopacevitaroceddnatun,teksagrebburehttiF).semit fixing screws
to secure the toilet in place.
Toilet Fixing
Bolt
Screw Cover
Rubber
Cover
Gasket
Nut Decorative
Cap
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Flush Plate installation
20. Ensure that the green cap is
tightened. Fix the locking plate to the
flush plate shield using the plastic
locking bolts. To lock the bolts in
position turn the bolt until the tab on
the bolt head is vertical. Trim the
length of the lockingbolts if required.
Locking
Plate
Locking
Bolts
21. Screw the flush rods into the flush
actuator until the untreaded end of
the rod is flush with the locking plate.
Ensure the flush rod is secured
through the square holes at the rear
of the flush actuato .r
tseT the fl ush action to ensure it is
.yltoomsgnivom
Adjust the flush rod as required then tighten
Flush Rod
Unthreaded End
Locking
nut
the lock nuts to prevent adjustment while in use.

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.desuydaersiteliotknatllaw-nI.32
Cover
Lock
Full
Flush
Reduced
Flush
Tab
Cover
Locking
Plate
Remove and Maintenance of Outlet Valve
Cover
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ehtfopotehtetatoR.drawpuhsup
.esaelerotllawehtmorfyawarevoc
2. Unscrew the flush rods. NEPOehtottlobkcolehtnruT.3
position and remove the locking
plate.

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ehtmorfsgelevlav2ehtkoohnU.4
flush actuato .r
Valve Leg
5. Lift the flush actuator upward to
release it from the tank and remove.
6. Turn the water off at the shut off valve
(green knob) inside the tank. Unscrew the
fill valve fixing nut and remove the fill valve.
Nut
Shut off valve
7. Note the orientation of the flevlavhsu
ehtmorfsgelehtevomeR.sgel flush evlav
behtgnikoohnuyb as ehtmorfgelehtfoe
flush .evlav
Pull Flush Valve Leg
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.uoysdrawottignillupybevlav
ehtetatoR fl aevlavhsu nt esiwkcolci
to release it from the base.
Tab
Pull
Outlet
Hole
Outlet
Valve

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9. L the flush valve assembly
including the securing tab up until
.dlehebnacbatdnaevlaveht
Separate the tab from the flush
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.knatehtmorfbatehtevomeR
Pull
Tab
Flush Valve
10. Lift and rotate the flush valve until
it is horizontal.
11. Rotate the base of the flush valve
out through the access panel.
12. To replace the flush valve, follow this instruction in reverse order.
Flush valve adjustment
Adjustment
Switch
Float
Full Flush:
Adjust the position of the switch on
llufehtyravotedisevlaveht flush
.emulov
Reduced Flush:
adjust the position of the float to
vary the reduced flush .evlav
itnawercsehtnruT clockwise to reduce the
.levelretaw
Turn the screw clockwise to increase the
.levelretaw
Inlet
Valve
Float
Screw
Inlet valve adjustment

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Trouble Shooting Procedures
Symptoms Probable Causes Recommended Action
Tank not filling
The shut off valve is closed
The inlet valve float is stuck
The inlet valve is filter is
blocked by debris
Open the shut off valve (green knob)
Adjust the inlet valve to an appropriate
position
Remove the inlet valve and wash out the
filter
Flush not operating
Adjust the flush rods
Ensure the flush valve legs are installed
in the correct orientation and connected
correctly
Float level of the inlet valve
requires adjusting
Water level too high
or low
The flush rods require
adjusting
Flush valve legs are
disconnected
Tank does not stop
filling
The inlet valve float is stuck
The outlet valve is not sealing
correctly
Adjust the inlet valve float level
Adjust the inlet valve to an appropriate
position
Uninstall the outlet valve, check the seal,
replace if warn. Remove any debris and
reinstall.
The filter cap is loose Tighten the filter cap (green cap)