clivus multrum CM14 User manual

CM14 Next Gen.
INSTALLATION MANUAL
AUS | NZ
IMCM-14-2023-12-04
Lic No. SMKH25591
AS/NZS 1546.2
SAI Global

TABLE OF CONTENTS
CM14 TANK ITEMS 1
PEDESTAL ITEMS 1
DRAIN ITEMS 2
VENT ITEMS 2
CONSUMABLES 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
LEACHATE DRAIN INSTALLATION 8
TOILET CHUTE & PEDESTAL 9
POWERING YOUR FAN 12
PEDESTAL INSTALLATION 13
INSTALLATION OF VENTILATION SYSTEM 13
STARTER-BED OF ORGANIC MATTER 16

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1x DEKTITE #6
1x CM14 TANK
CM14 TANK ITEMS
1x WASTE
CHUTE
1x SILICONE
SEALANT
1x MAINTENANCE RAKE
PEDESTAL ITEMS
12x DEKTITE SCREWS
1x PEDESTAL &
TOILET SEAT
SEALANT
1x ‘HOW TO
USE’ SIGN
How to use:

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1x VENT COWL
2x SLIP JOINERS
2x LIT REDUCER
Ø150-100MM (FOR
COMMERCIAL ORDERS)
1x FAN IN HOUSING
WITH BUG MESH
1x TRANSFORMER
2X MI CONNECTOR Ø50MM
VENT ITEMS
DRAIN ITEMS
1x WALLACE SEAL
1x PVC DRAIN PIPE
Ø50MM
2x 45° BEND Ø50MM
1x TEE Ø50MM
3x VENT PIPE SECTIONS
2x 90° BEND 2x VENT SUPPORT
BRACKETS & 4
SCREWS
1x SOCKED SLOTTTED
PIPE Ø100MM 2M L,
WITH LIT REDUCER
Ø100-50MM
1x THREADED
ACCESS CAP
Ø50MM
Domestic Installation: Ø100MM PIPING
Commercial Installation: Ø150MM PIPING
1x DEKTITE #4 WITH
12x DEKTITE SCREWS

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OPTIONAL PACK FOR BURIED INSTALL ONLY
2X PIPE Ø50MM
1.5M LONG
1X PIPE Ø50MM
1.2M LONG
CONSUMABLES
ENZYME
CONCENTRATE
MICROBES
BULKING
AGENT SPRAY BOTTLE
1x DEKTITE

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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 CM14 tank.
Installation of
Ø50mm Pipe 1.5M Long
Installation of
Ø50mm Pipe
1.2M Long
Concrete, sand or
crusher dust 50mm
thick under the tank
0.5m³of
concrete over
anchor pipes
Ø50mm Pipe 1.5M Long
Ø50mm Pipe 1.2M Long
Excavate 300mm larger
than tank all around. Fill
with clean fill.
LEFT SIDE VIEW
LEFT SIDE VIEW SECTIONAL IN GROUND

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LEACHATE 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
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 oor
1
2
3

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Viewpoint/
Maintenance Access
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.
4
5
6

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SEALANT
12
3
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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POWERING YOUR FAN
Mains Power
A 120 /12 volt regulated transformer is included to run the fan from mains power. The
positive wire the transformer is marked with a white line. The fan has anti-polarity
protection and would not run if connected incorrectly. If you have a solar panel, refer
to the instructions provided with it.
Connect the fans to the transformer as follows:
1
3
5
2
4
6
Unscrew the fan housing cover.
Attach the transformer cables to the
terminal block as shown below.
Pull out the transport spacers.
Insert the fan and fan mesh into the
housing, with the fan mesh on top.
Screw fan cover back onto housing. Test the fan. Airflow should be directed
upwards, towards the top of the fan
housing (see arrow).
Black to black (negative)
Red to black with white stripe (positive)

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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.
Cut hole for wallace seal.
Follow the diametre noted
on the wallace seal.
1
2

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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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1
2
3
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 CM14.
Install the vent cowl
or optional turbo vent
(1). Secure with 3 self-
tapping screws.
6
7
Min. 900mm

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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

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