clivus multrum CM40 User manual

CM40
INSTALLATION MANUAL
AUS | NZ
IMCM-40-2023-12-04
Lic No. SMKH25591
AS/NZS 1546.2
SAI Global

TABLE OF CONTENTS
CM40 TANK ITEMS 1
PEDESTAL ITEMS 1
DRAIN ITEMS 2
VENT ITEMS 2
CONSUMABLES 3
OPTIONAL ITEMS FOR LEACHATE DRAIN 3
OPTIONAL PACK FOR BURIED INSTALL ONLY 3
TOOLS REQUIRED 4
MATERIALS REQUIRED 4
INSTALLATION SUMMARY 4
CONDITIONS 5
POSITIONING THE TANK 6
TANK SUPPORT 6
FOR BURIED INSTALL SYSTEM ONLY 7
EXCESS LIQUID DRAIN INSTALLATION 8
TOILET CHUTE & PEDESTAL 9
PEDESTAL INSTALLATION 12
INSTALLATION OF VENTILATION SYSTEM 12
HOW TO USE THE MAIN LID 15
STARTER-BED OF ORGANIC MATTER 16

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1x TOILET CHUTE COLLAR
1x CM40 TANK
CM40 TANK ITEMS
1x TOILET CHUTE
1x SILICONE SEALANT
1x MAINTENANCE RAKE
PEDESTAL ITEMS
16x ROOFING SCREWS
1x PEDESTAL & TOILET SEAT
(Type and quantity
dependent on customer
requirements)
SEALANT
1x ‘HOW TO USE’ SIGN
How to use:

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DRAIN ITEMS
2X MI CONNECTOR Ø50MM
1x PVC DRAIN PIPE
Ø50MM
2x 45° BEND Ø50MM
1x TEE Ø50MM
1x SOCKED SLOTTTED
PIPE Ø100MM 2.5M L
1x THREADED
ACCESS CAP
Ø50MM
1x VENT COWL
2x SLIP JOINERS
2x LIT REDUCER Ø150-100MM
(FOR COMMERCIAL ORDERS)
1x FAN IN HOUSING
WITH BUG MESH
1x TRANSFORMER
VENT ITEMS
1x WALLACE SEAL
3x VENT PIPE SECTIONS
1x 90° BEND 2x VENT SUPPORT
BRACKETS & 4
SCREWS
Domestic Installation: Ø100MM PIPING
Commercial Installation: Ø150MM PIPING

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OPTIONAL PACK FOR BURIED INSTALL ONLY
OPTIONAL ITEMS FOR LEACHATE DRAIN
5X FRP PIPE
Ø50MM 300MM LONG
1X SLOTTED DRAIN COIL
Ø100MM 3M LONG
1X FILTER CLOTH
1X PVC DRAIN PIPE
Ø50MM 1M LONG
CONSUMABLES
ENZYME
CONCENTRATE
MICROBES
BULKING
AGENT SPRAY BOTTLE

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MATERIALS REQUIRED
• Water to wet starter material.
• Additional 50mm PVC pipe (coupling and bends if absorption trench is to be
located some distance away from tank). Additional pipe bends if needed for vent
pipe.
• In poor soil conditions, extra length of trenching arch or agi drain may be required.
• Drainage gravel for excess fluids drain.
INSTALLATION SUMMARY
1. Ensure the tank is in a position so that the toilet chute will be perfectly straight over
the tank below.
2. Ensure the tank foundation is solid with a concrete, sand or crusher dust bed.
3. Mark and cut holes in the floor for the toilet chute.
4. Mark and cut holes in the tank top.
5. Insert toilet chute and pedestal.
6. Install the vent system.
7. Install the liquid end-product drain pipe and absorption/transpiration trench.
8. Connect fan to power source.
9. Check everything is sealed.
10. Place a starter-bed of suitable bulking agent (e.g. wood shavings) in the unit.
11. Wet bulking agent before use of toilet.
12. Add starter bacteria after 14 days of use.
Screwdriver
(Philips/plain)
Jigsaw Tape Measure
Caulking gun
Marker
Spade
Ladder
Spirit Level
TOOLS REQUIRED
Scissors/Knife Drill PPE

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CONDITIONS
Any decomposition process works better where temperatures are warmer. Over
the winter months the composting process slows or can even temporarily stop
where temperatures in the pile drop below 4°C.
>13°C
Ideal temperature for composting
<13°C
Composting process slows
As the composting tank is black, it will absorb heat from the sun. Simply by
installing the compost bin on the north side of the house will make a dramatic
difference to the composting process. In addition, a translucent hatch and
enclosure can be installed around the compost bin. In extreme alpine conditions it
may be necessary to insulate the tank itself in addition to the above.
N
Ideal chute/
pedestal location on
tank.
Side of Building
Hatch
PLAN VIEW

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Smooth Ground Uneven Ground
50-75mm bed of sand, crusher dust
or similar solid sub-soil
POSITIONING THE TANK
If there is very little room between the top of the tank and the floor of the building,
the order of the installation can be changed as follows: Firstly, cut the hole for
the pedestal in the floor of the building (refer to page 9, Toilet Chute & Pedestal).
Position the tank under the hole and then mark the position of the hole onto the
tank. After the tank has been marked, it can be removed from under the building.
Cut the hole in the tank and fit the chute collar before placing the tank back into
position.
Check the position planned for the toilet chute. The toilet chute must be
positioned over the top of the compost tank. For less maintenance of the
compost pile, the optimum location for the chute/s to enter the tank is mid-
width, in the rear half of the tank. A clearance of at least 150mm from edge of
chute to edge of tank-top is desirable to avoid rapid build up of the pile against
the sides.
Check there are no major support beams, pipes or electrical wire that are in the
way of the toilet chute.
Where mains power is to be used, check that a power point has been installed
near the location for the ventilation fan.
Locate where the excess liquid drainpipe and tench is to go and take this into
account when positioning the tank.
TANK SUPPORT
The composting tank must be supported by either packed earth with the tank
placed on a base of sand, or a wooden frame on a solid base (e.g. a concrete slab).
Insulation between the tank and the concrete slab will reduce heat loss and aid the
composting process.
NOTE: The tank and enclosure should be protected from surface water and
floodwater.

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FOR BURIED INSTALL SYSTEM ONLY
For a buried system it is required to hold the tank down with galvanised rods. These
are slid into the slots provided on both sides and the front of the tank.
Concrete, sand or
crusher dust 50mm
thick under the tank
0.5m³of
concrete over
anchor pipes
Ø50mm FRP Pipe
Firm sub-soil
Excavate 300mm larger
than tank all around. Fill
with clean fill.
LEFT SIDE VIEW SECTIONAL IN GROUND

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EXCESS LIQUID DRAIN INSTALLATION
230 min
150 min
500 min
Leachate drain
Gravel
Geofabric layer
300 min
150 min
450 min
20mm Gravel
ø100mm Agi Drain
Geofabric layer
Socked Slotted Pipe
Drain Options
Trench Arch
For zero discharge units, please contact
our sales team.
Threaded Access Cap
45° Bend
Leachate Drain
90° Junction

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TOILET CHUTE & PEDESTAL
Please refer to the separate
pedestal installation manual
for instructions on how to
locate the pedestal in your
bathroom.
FRONT
BACK
A3 Template to
cut chute hole
at the correct
size.
BACK WALL
< 5mm of sideways play around the hole.
SIDE WALL
NOTE:
If the floor of the building is high above the
top of the tank a chute extension piece/s
may be needed.
Extra lengths are available from your supplier.
Joints should be screwed with short self-
tapper screws, and sealed with silicon.
If more than 2 chutes are joined then
additional support straps or brackets are
needed to support their weight from the
building frame, instead of hanging only by
the top chute.
Using the outside of the toilet
chute as a template, mark
and cut the chute hole into
the top of the tank.
Bathroom floor
1
2
3

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Enlarge the hole in the rubber chute collar
so it will stretch snugly around the toilet
chute without gaps.
Drip Edge
Max 100mm
SECTION VIEW
Mark and cut chute.
Floor representation
4
5
6

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SEALANT
1 23
Collar
Lift the toilet chute slightly and
put sealant between the toilet
chute and the floor then press
chute down again to seat
firmly onto the floor.
SEALANT
TOP FLOOR
Bend and move the metal
edging strip of the chute
collar to the tank.
Lift up Push down
7
8
Run a bead of silicon sealant
around the underside edge of
the collar.
Using the 1/2 stainless screw
provided, secured the collar
of the tank top by screwing
through the metal edging strip.
9

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PEDESTAL INSTALLATION
See separate instruction manual for pedestal installation.
INSTALLATION OF VENTILATION SYSTEM
Note: As air flow is essential to the operation of the unit, the fewer bends that are
used when installing the vent system the better.
NOTE: The hole for the vent pipe is best at the side of the tank, as far as practical from
the nearest chute entry. Refrain from placing it along the front face as this can hinder
opening of maintenance access.
Plan the vent
pipe layout.
1
2
Cut hole for wallace seal.
Follow the diametre noted
on the wallace seal.

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Secure Wallace seal into position.
Tip: Putting the wallace seal in hot water for
5 minutes can help when installing the PVC
pipe.
Secure pipe fittings according to building/
roofing instructions. Complexity may vary.
3
4
5
Position the fan housing so that it can be
easily accessed and secure with silicon.
NOTE: The fan should run 24 hours a day
to continuously circulate air through the
compost heap and minimise odour.

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Attach the upper section of the vent
pipe.
The pipe should be supported against
the wall of the building with the brackets
provided (2, 3).
This configuration will vary depending
on location of tank.
Install the vent cowl or optional turbo
vent (1). Secure with 3 self-tapping
screws.
6
7
1
2
3
Min. 900mm

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Aline the lip of the lid with the front rib
of the Main Top Tank.
Push the lip under the rib and ensure
there is a strong secure fit. Once the lip
is secured push the lid down to its final
position.
Once the lid is in its final position use
the two wing nuts to secure the front
of the lid.
HOW TO USE THE MAIN LID
1
2
3

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STARTER-BED OF ORGANIC MATTER
SUITABLE BULKING MATERIAL
Fine sawdustLarge wood chips
Wood shavings
Lawn clippings
Starter bed of bulking material
to underside of baffle.
1
2
BULKING
MATERIAL
0.40 m3
Front Baffle
Hemp
Sugar cane
mulch
NOT SUITABLE BULKING MATERIAL
Dry Leaves Peanut or
coconut husk
Dampen down
well with water.
INSTALLATION COMPLETE