Caroma Invisi Series II User manual

urinal concealed cistern
237002
Installation must be in Accordance with AS/NZS 3500.1.

Contents
6 Step Easy Installation
Installation Requirements
Cistern Service Access Options
Button Service Access Options
IMPORTANT - Does your urinal ush for more than 20 seconds?
Flush Volume & Stall Setup
Single Stall Installations
Two Stall Installations
Three Stall Installations
Installing the Cistern - 237 002
Inwall Access - stud wall
Inwall Access - masonry wall
Induct Access
In Ceiling Access
Custom Panel Access
Access Panel Variations
Remote Mounting Box Installation
Preparation for Fitout
Removing Internal Components through Access Window
Servicing - Inlet Valve
Servicing - Outlet Valve
Important Notices
Helplines
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2

6 Step Easy Installation
Installation Requirements
4 5 6
1 2 3
237 002 - Invisi II 1.8L Single Flush Urinal Cistern
CONTENTS
• Invisi II - 1.8L Urinal Concealed Cistern
• Mounting Brackets
• Copper Adaptor
• Remote Mounting Box
• 4m of Pneumatic Tube
• Cistern Fixing Pack
REQUIREMENTS
• 90mm Min, Inwall Cavity Depth
• 400mm Min. - 420mm Max. Cavity Width
(e.g. between studs)
• 1/2 inch BSP Water Connection
Preparation
for Fitout
Installing
the Cistern
Select
Cistern Service
Access Options
Check
Installation
Requirements
Select
Button Service
Access Options
Flush Volume
& Stall Setup

Cistern Service Access Options
Inwall Access
This allows access to cistern internals through the button panel window.
Standard installation requires no change to product conguration.
Remote Mounting Box is supplied. Refer to page 14 for remote button
panel installation.
Induct Access
This allows access to the whole cistern. Standard installation will require
the supplied Remote Mounting Box for remote button panel installation.
Refer to page 14.
In Ceiling Access
This allows access to the whole cistern or access to cistern internals
through the panel window depending on installation.
Standard installation will require the supplied Remote Mounting Box.
Refer to page 14 for remote button panel installation.
Optional Top Access will require the access panel to be converted
(refer to page 14).
Large Panel Access
This allows access to the whole cistern. Standard installation requires no
change to product conguration.
Custom Panel Access
This allows access to the whole cistern or access to cistern internals through the
panel window depending on installation.
A Remote Mounting Box is supplied. Refer to page 14 for remote button panel
installation.
4

Button Service Access Options
34
29
200 - 210 Frame
Wall
Pipe
IMPORTANT - Does your urinal flush for more than 20 seconds?
Cistern Service Access Options
Direct Panel Mounting
This is suitable for use with any
of the button panel kits.
Requires a 5mm minimum -
45mm maximum cladding
thickness.
Access to the cistern internals
is provided through the panel
window.
Remote Panel Mounting
This is suitable for use with any
of the button panel kits.
Suits up to 45mm cladding
thickness.
A Blanking Panel is required
for inwall access to cistern
internals.
Remote Button Mounting
Access to the rear of the buttons
must be provided for servicing.
Suitable for mounting through
panels up to 55mm thick.
A Blanking Panel is required for
inwall access to cistern internals.
Large Button Panel
Used in combination with Round
Remote Buttons allows access to
the whole cistern.
With some urinal types it is possible for the discharge rate to be slower than the rell rate. When the cistern is
ushed, the water level will begin to fall until the inlet valve opens. When water is added faster than it can leave,
the cistern never empties (the outlet valve remains open and the cistern runs on).
The ush volume required for each urinal stall is 1.5 - 2.5 litres. This amount of water passes relatively slowly
through the spreader system of some urinals, (as slow as 2 litres/min) which is normally slower than the
cistern rell rate. If a urinal installer does not consider this issue it is possible that cistern run-on will occur.
There are a number of checks to ensure that the urinal operates correctly:
1. Ensure that the ush volume is correctly adjusted
for the installation.
2. Where the urinal ushes for more than 20 seconds,
the inlet valve ow rate must be reduced. This is
achieved by carefully adjusting the Isolating Tap
to restrict the incoming ow.
3. Flush urinal several times to conrm settings.
NOTE: In some instances, particularly single stall
urinals, it maybe necessary to adjust the Isolation
Taps ow rate down very low (almost to the off position).
OFF
ON
Dust Cover
INSTALLATION NOTE:
When installing between the copper pipe and the wall frame you
may need to modify the Remote Mounting Box for
optimum tment.
Using a hacksaw cut away the
corner adjacent to the pipe
WARNING:
Do not install the
Remote Mounting
Box vertically

Flush Volume & Stall Setup
Single Stall Installations
1
2
Blank Access Panel
*
Ø20 sparge pipe
*
Reducer to Ø40
copper pipe (supplied)
400mm - 420mm
Frame
45mm
335mm to
access panel
centre line
Centre Line Button
(standard mounting)
Finished Floor Level
Refer to specifications of the selected urinal.
90mm Min.
Cavity Depth
(70mm Min. for
inceiling
installations)
5mm Min.
45mm Max.
Cladding Thickness
*
*
SIngle Remote Button
950mm
Recommended
Datum
Adjustment
Screw
1.8L = Single Stall Urinal
The cistern is configured for single stall installations out of the factory.
The pneumatic tube must be connected to the full flush position.
By adjusting the water level in the cistern up or down using the float
adjustment screw located on the side of the inlet valve, the flushing
volume may be fine tuned or reconfigured to any of the following flush
volumes.
2.3L = Single Stall Urinal
1.8L = Single Stall Urinal
1.3L = Single Stall Urinal
0.8L = Single Stall Urinal
= Full Flush Position
6
Conguring Flush Volume
Remove Dust Cover and adjust Water
Level using the adjustment screw.
The Water Level should be set to
correspond to your required ush
volume marked on the inside of the
cistern.
Dust Cover
NOTE:
When installing the
Remote Mounting Box in
this position, please refer
to the ‘Installation Note’ on
page 5

Two Stall Installations
Flush Volume & Stall Setup
2
1
4
3
5
Single Remote Button
Datum
Blank Access Panel
*
Ø20 sparge pipe
*
Reducer to Ø40
copper pipe (supplied)
400mm - 420mm
Frame
45mm
600mm
950mm
Recommended
335mm to
access panel
centre line
Centre Line Button
(standard mounting)
Finished Floor Level
Refer to specifications of the selected urinal.
Adjustment
Screw
Bucket
3.8L = Two Stall Urinal
For two stall installations the outlet valve must first be configured by following the
conversion instructions adjacent.
The water level in the cistern must then be set to the “WL” mark, using the float
adjustment screw located on the side of the inlet valve.
The pneumatic tube must be connected to the full flush position.
= Full Flush Position
Conguring Flush Volume
Remove Outlet Valve, refer to page 17.
Using a screw driver lever the bucket
hangers over the hooks, allowing it to sit
level with the 3.8L mark on the valve.
Replace parts back into Cistern.
Set Water Level using the adjustment
screw.
.
The Water Level should be set to
the “WL” mark on the inside of the
cistern.
Dust Cover
NOTE:
When installing the
Remote Mounting Box in
this position, please refer
to the ‘Installation Note’ on
page 5

Flush Volume & Stall Setup
Three Stall Installations
4
5
3
1
2
Blank Access Panel
*
Ø20 sparge pipe
*
Reducer to Ø40
copper pipe (supplied)
Refer to specifications of the selected urinal.
400mm - 420mm
Frame
45mm
600mm 600mm
950mm
Recommended
335mm to
access panel
centre line
Centre Line Button
(standard mounting)
Finished Floor Level
Single Remote Button
Datum
Adjustment
Screw
Bucket
8
5.8L = Three Stall Urinal
For three stall installations the outlet valve must first be configured by following the
conversion instructions adjacent.
The water level in the cistern must then be set to the “1.8L” water level mark, using the
float adjustment screw located on the side of the inlet valve.
The pneumatic tube must be connected to the full flush position.
= Full Flush Position
Conguring Flush Volume
Remove Outlet Valve, refer to page 17.
Using a screw driver lever the bucket
hangers over the hooks, allowing it to
sit as low as possible.
5
Replace parts back into Cistern.
Set Water Level using the adjustment
screw.
.
The Water Level should be set to the
“1.8L” mark on the inside of the cistern.
NOTE:
When installing the
Remote Mounting Box in
this position, please refer
to the ‘Installation Note’ on
page 5

Inwall Access - stud wall
Installing the Cistern - 237 002
Datum
400mm – 420mm
45mm
- Water Supply Connection
90mm Min.
Cavity Depth
5mm Min.
45mm Max.
Cladding Thickness
Refer to
specifications
of the selected
urinal.
335mm to
access panel
centre line
Service Access Panel
Centre Line (standard mounting)
1. Calculate the nished oor height
(allowing for oor gradings and tile
thickness, etc.) and add this to the
known height of the selected urinal’s
inlet. Mark this resulting height on
the stud - This is your datum
and ush pipe centre line.
2. Screw cistern to studs via the 2
front, top and bottom holes in each
mounting bracket making sure the
water connection tting is on the left
hand side of cistern.
3. Fabricate ush pipe using the
Copper Adaptor provided.
4. Lubricate ‘O’Ring on cistern tail using
soapy water and slide ush pipe on.
5. Connect the water supply.
6. Remove Dust Cover, turn Isolating
Tap ON, ll tank & set water level using
Adjusting Screw on the inlet valve.
7. Check cistern and all joints for leaks.
8. Turn Isolating Tap OFF. Continue
with Preparation for Fitout on page 15.
Water Supply Connection
OFF
ON
Dust Cover

Installing the Cistern - 237 002
Inwall Access - masonry wall
Datum
400mm – 420mm
45mm - Water Supply Connection
NOTE:
90mm Min.
Cavity Depth
720mm
Min.
470mm
(ref)
55mm
(ref)
50mm
335mm to
access panel
centre line
Refer to
specifications
of the selected
urinal.
Service Access Panel
Centre Line (standard mounting)
10
1. Make sure the hole for the ush
pipe is at the correct height. Calculate
the nished oor height (allowing for
oor gradings and tile thickness, etc.)
and add this to the known height of the
selected urinal’s inlet. Mark this
resulting height on the wall - This
is your datum and ush pipe
centre line.
2. Conrm size and positioning of
opening as shown is relative to your
datum.
3. Screw cistern to wall via the 2
front, top and bottom holes in each
mounting bracket making sure the
water connection tting is on the left
hand side of cistern.
4. Fabricate ush pipe using the
Copper Adaptor provided.
5. Lubricate ‘O’Ring on cistern tail using
soapy water and slide ush pipe on.
6. Connect the water supply.
7. Remove Dust Cover, turn Isolating
Tap ON, ll tank & set water level using
Adjusting Screw on the inlet valve.
8. Check cistern and all joints for leaks.
9. Turn Isolating Tap OFF. Continue
with Preparation for Fitout on page 15.
Water Supply Connection OFF
ON
Dust Cover

Installing the Cistern - 237 002
Inwall Access - masonry wall
Datum
400mm – 420mm
45mm - Water Supply Connection
NOTE:
90mm Min.
Cavity Depth
720mm
Min.
470mm
(ref)
55mm
(ref)
50mm
335mm to
access panel
centre line
Refer to
specifications
of the selected
urinal.
Service Access Panel
Centre Line (standard mounting)
Installing the Cistern - 237 002
Induct Access
Datum
NOTE: For service duct
access install cistern backwards
with flush pipe rotated 180° and
utilising the Remote Mounting Box
for button installation.
Service Access Box
Front Mount
Service Access Box
Centre Line
(standard mounting)
400mm – 420mm
45mm -
Water Supply Connection
Refer to
specifications
of the selected
urinal.
335mm to
access panel
centre line
Datum
1. Calculate the nished oor height
(allowing for oor gradings and tile
thickness, etc.) and add this to the
known height of the selected urinal’s
inlet. Mark this resulting height on
the stud - This is your datum
and ush pipe centre line.
2. Fabricate ush pipe using the
Copper Adaptor provided.
3. Drill suitable diameter hole(s)
through the wall for the ush pipe(s).
4. Lubricate ‘O’Ring on cistern tail
using soapy water and slide ush
pipe on so that it is protruding in the
opposite direction from that of the
Service Access Box.
5. Place the ush pipe through hole
and secure cistern to duct wall using 2
screws via holes provided in each of the
mounting brackets.
6. Connect the water supply.
7. Remove Dust Cover, turn Isolating
Tap ON, ll tank & set water level using
Adjusting Screw on the inlet valve.
8. Check cistern and all joints for leaks.
9. Turn Isolating Tap OFF. Continue
with Preparation for Fitout on page 15.
Water Supply Connection
OFF
ON
Dust Cover

Installing the Cistern - 237 002
In Ceiling Access
Ceiling void
Where ceiling
space is restricted,
the Invisi II can be
lowered into wall
cavity. 4 metres long (max.)
pneumatic tube
(supplied)
Datum
Note: Access to ceiling
must be provided
5mm Min.
45mm Max.
Cladding Thickness
Centre Line Buttons
(remote mounted)
90mm Min.
Cavity Depth
Access Box converted
to top (refer to page 14.)
Finished Floor Level
Cavity Depth can be 70mm
if cistern is installed completely
in-ceiling 400mm – 420mm
45mm -
Water
Supply Connection
950mm
Recommended
(push button height)
3 metres Max
to centre of inlet.
Height to centre of the
selected urinal's inlet.
Refer selected urinal's
specificatrions
430mm
- top of Top Mounted
Access Box
1. Cistern can be a maximum height
of 3 metres above the inlet height of
the selected urinal.
2. Calculate the nished oor height
(allowing for oor gradings and tile
thickness, etc.) and add this to the
known height of the selected urinal’s
inlet. Mark this resulting height on
the stud - This is your datum
and ush pipe centre line.
3. Screw cistern to studs via the 2
front, top and bottom holes in each
mounting bracket making sure the
water connection tting is on the left
hand side of cistern.
Note: Cistern may be installed on wall
face (refer to page 12 - Induct Access)
4. Fabricate ush pipe using the
Copper Adaptor provided.
5. Lubricate ‘O’Ring on cistern tail using
soapy water and slide ush pipe on.
6. Connect the water supply.
7. Remove Dust Cover, turn Isolating
Tap ON, ll tank & set water level using
Adjusting Screw on the inlet valve.
8. Check cistern and all joints for leaks.
9. Turn Isolating Tap OFF. Continue
with Preparation for Fitout on page 15.
Water Supply
Connection
OFF
ON
Dust Cover
12

Installing the Cistern - 237 002
Custom Panel Access
The minimum front access requirements
for servicing cistern internal are:
The minimum top access requirements
for servicing cistern internal are:
The minimum front access requirements
for cistern removal are:
400mm
520mm
50mm
195mm
90mm
100mm Min.
195mm
90mm
1. The design of the custom panel
is limited only by the designers
imagination.
2. Cistern must be mounted using the
attached Mounting Brackets. Refer
to appropriate installation method on
previous pages.
3. Allowances for access to at least the
cistern internals if not the entire cistern
must be incorporated into the design.
4. Check cistern and all joints for leaks.
5. Turn Isolating Tap OFF. Continue
with Preparation for Fitout on page 15.

Access Panel Variations
Remote Mounting Box Installation
1a 2 3
1 2 3
1b
Slide the Top Panel back and off the lid.
(This panel will no longer be required).
There are clips at each end so the Top
Panel Should be carefully levered or
exed to clear both clips.
Slide the Access Box up and off the lid.
There are clips at each end so the Top
Panel Should be carefully levered or
exed to clear both clips.
Find the Front Panel supplied loose in the
pack (This panel is slightly larger than the
Top Panel removed). Slide the Front Panel
onto the lid ensuring it locks into position.
Slide the Access Box onto the lid ensuring
the overhang tab is to the rear of the cistern
and it locks into position.
The Panel and Access Box should lock
together neatly as shown.
Access Box with
Dust Cover
“click”
“click”
Front Cover
(supplied loose)
Top Cover
The Cistern is supplied standard with Front Access.
For conversion from Front to Top Access follow this procedure.
clips
Clips
14
1a. The Remote Mounting Box can be xed
to timber studs using suitable xings....
1b. ....or mortared into brickwork.
2. Make sure the Pneumatic Hose is
accessible through the Remote Mounting
Box and ensure the hose has no kinks or
is not pinched in any way prior to the nal
cladding being added.
Once the nal cladding has been added the
box must be trimmed ush with the wall.
3. The Remote Mounting Box is now ready
for the Button Assembly installation.

Preparation for Fitout
OR
1 2 3
OR
1 2
Pneumatic Tube Connections
Blanking Panel Mounting
Remote Panel Mounting
Attach the tube to the cistern as shown above. Break out tab in the Top Panel or Dust Cover Panel to allow
the Tube to protrude and clip back into position. Feed the 4m length of Pneumatic Tube through the
framework and out through the Mounting Box. Apply tape over end of tube to prevent any dirt from getting
inside and tuck neatly back inside the Mounting Box. When nishing the wall, clad and tile right up to the
edge of the Access Window and or Remote Mounting Box.
Attach the tube to the cistern as
shown above. Tuck neatly back
inside the Access Window and
clip the dust cover panel back
into position. When nishing the
wall, clad and tile right up to the
edge of the Access Window.
Firmly connect the pneumatic tube into
the full ush position. The tube should be
inserted approx. 16mm until it hits a stop.
NOTE:
• 1.8L Urinal Cisterns are supplied with 4m length pneumatic tube.
• 4m lengths of pneumatic tube can be purchased separately Part No. 237 702.

Preparation for Fitout
OR OR
31 2
1 2 3
16
Remote Button Mounting
Large Button Panel
Attach the tube to the cistern as shown above. Break out tab in the Top Panel to allow the Tube to protrude
and clip the Dust Cover Panel back into position. Trim the Access Window all around so it protrudes between
10-15mm from the front face of the Dust Cover Panel. Apply tape over end of tube to prevent any dirt from
getting inside and tuck neatly back inside the large Access Window.
Attach the tube to the cistern as shown above. Break out tab in the Top Panel or Dust Cover Panel to
allow the Tube to protrude and clip back into position. Feed Pneumatic Tube through the framework and out
through the Drilled Hole. Apply tape over end of tube to prevent any dirt from getting inside and tuck neatly
back inside hole.

Removing Internal Components through Access Window
1
1- pre installation 1- with button panel 1- with blanking panel
2 3 4
5 6 7
Dust Cover
“click”
“click”
Inlet
Valve
Assembly
“squeeze”
Bridge
Assembly
Outlet
Valve
Flexible Hose
Ball Valve Inlet Valve
Face Plate
Panel Assembly
Face Plate
Panel Assembly
Blanking Panel
Full Flush
Disconnect Flexible Hose from the Inlet
Valve and the Ball Valve.
Lift tab and slide the Inlet Valve Bracket to
the left.
Remove the Bridge Assembly by squeezing
tabs front and back to disengage from
locking tabs inside the tank.
Lift the Outlet Valve to disengage from
guide ribs in the base of the tank and lay
over on it’s side.
Rotate and remove the Inlet Valve Lift the Outlet Valve from the base of the
tank, roll forwards and rotate so the button
end comes out rst.
NOTE: Reverse procedure to reassemble.

Servicing - Inlet Valve
Helplines
53 4
1 2a 2b
A
AD
C
B
A
C
B
Maintenance & Spare Parts Instructions
Wash seal to remove any dirt and inspect
for damage.
Remove seal from Cap Assembly. Replace seal onto cap assembly.
If necessary replace cap & Seal (Spare Part
Kit 687 049)
Push & rotate to re-attach cap assembly,
re-clip Adjustment Screw and ret into
cistern.
Adjustment
Screw
To clean and inspect seal:
unclip the Adjustment Screw, rotate & pull
to remove cap assembly.
To replace complete Inlet Valve:
rotate nut & pull to disconnect it from the
Bracket.
Seal
Cap
Assembly
Bracket
Inlet
Valve
• Inlet Valve is slow to ll OR fails to open ► Ensure tap is open.
• Inlet Valve fails to close ► Clean & inspect seal as described above, replace Cap Assembly
& Seal if damaged.
• If any other issues arise ► Consult a plumber or Caroma After Sales Service.
• Inlet Valve Seal may require periodic cleaning (dependant on water quality).
- procedure as dened below.
Servicing Requirements
Troubleshooting Guide
• Caroma Invisi II Inlet Valve compatible Spare Part Kits are:
687 171Containing - 1 x Complete Unill Inlet Valve
with bayonet connection
687 049Containing - 1 x Cap Assembly
- 1 x Seal
Refer to - Maintenance & Spare Parts Instructions
Spare Parts Information
Cap Assembly
Seal
Ensure mains water is turned off and
remove Inlet Valve from cistern as per the
instructions on page 17.
18

Servicing - Inlet Valve
Helplines
53 4
1 2a 2b
A
AD
C
B
A
C
B
Servicing - Outlet Valve
1 2 3
• Servicing is only required in instances where outlet valve operation is found to be faulty.
Servicing Requirements
• If the urinal ushes for 20 seconds or more ► 1. Ensure that the ush volume is correctly adjusted for
the installation.
2. Where the urinal ushes for more than 20 seconds,
the inlet valve ow rate must be reduced. This is
achievedby carefully adjusting the Isolating Tap
down.
3. Flush urinal several times to conrm settings.
NOTE: In some instances, particularly single stall
urinals, it maybe necessary to adjust the Isolation Tap
down very low (almost to the off position).
• If Outlet Valve leaks ► Inspect seal for damage and replace if necessary.
• If short ushing ► Check pneumatic tube is pushed into the bridge and button
• If any other issues arise ► Consult a plumber or Caroma After Sales Service.
Troubleshooting Guide
• Caroma Invisi II Outlet Valve compatible Spare Part Kits are:
237 173 Containing - 1 x Complete Urinal Outlet Valve
237 070 Containing - 10 x Diaphragm Seal
Refer to - Maintenance & Spare Parts Instructions
Spare Parts Information
Wash seal to remove any dirt and inspect
for damage. If necessary remove seal and
replace (Spare Part Kit 237070).
Ensure mains water is turned off and
remove Outlet Valve from cistern as per
the instructions on page 17.
Re-assemble complete Outlet Valve and
ret into cistern. Turn mains water back on,
wait for cistern to ll and test both buttons
to ensure they activate the outlet valve.
Seal
Maintenance & Spare Parts Instructions
OFF
ON
Dust Cover

Important Notices
Helplines
Recommended Water Supply Pressure
Water Supply pressure minimum 30 kPa - Maximum 1000 kPa.
Leaet No. 237 502~E
Caroma Industries Limited www.caroma.com.au
ABN 35 000 189 499 www.smartush.com.au
Locked bag 5005, Baulkham Hills NSW 2153 www.caromausa.com
Australia 131416
New Zealand 09 279 2700
USA 1800 605 4218