HOMEBIOGAS HBG 7.0 User manual

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HB7GF/OM/140822
VERSION 140822
HBG 7.0 HOUSEHOLD BIOGAS SYSTEM
OWNER’S MANUAL
© 2022 HOMEBIOGAS

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Introduction
Safety
System Assembly
Activating the System
Daily Operation
System Care
Troubleshooting
Tech Specs
Homebiogas Fertilizer
Warranty

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The anaerobic bacteria in the digester
biodegrade the organic waste, producing
biogas in the process.
In addition to biogas, the
system produces a
nutritious, natural fertilizer.
A patented mechanism regulates gas
pressure when the biogas is used, enabling a
steady, even pressure at the end device.
The generated biogas passes through an
active filter to remove any unpleasant odors
and trace amounts of hydrogen sulfide, and
is stored in the gas tank.
A special pressure release
mechanism releases excess
gas once the gas tank is filled
to capacity.
Organic waste is fed into
the digester tank, which
is filled with water.
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introduction
The HOMEBIOGAS household biogas system turns organic waste like food scraps and animal manure into biogas, which can
be used for cooking, and natural liquid fertilizer, which can be used for gardening.
Biogas is generated in the system by the anaerobic (without oxygen) fermentation of organic matter. Biogas is a ammable
gas that is lighter than air, composed mainly of methane and carbon dioxide.
HomeBiogas is a biological system: performance is aected by environmental conditions and may vary due to physical lo-
cation and ambient temperature.
The system operates as a continuous-ow system: organic waste is fed into one end, and gas
and fertilizer are emitted constantly from the other as long as the system is active and being
fed. (Fertilizer is produced whenever liquid & waste are added into the system)
Organic waste is fed into
the digester tank, which is
lled with water.
The anaerobic bacteria in the digester
biodegrade the organic waste, producing
biogas in the process.
In addition to biogas, the
system produces a nutritious,
natural fertilizer.
A special pressure release
mechanism releases excess
gas once the gas tank is lled
to capacity.
The generated biogas passes through
an active lter to remove any unpleasant
odors and trace amounts of hydrogen
sulde, and is stored in the gas tank.
A patented mechanism regulates gas pressure
when the biogas is used, enabling a steady, even
pressure at the end device.

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bottom section: digester tank
gas val
ve
gas outlet pipe
biogas filter
f
ertilizer outlet
plunger slot
wast
e inlet sink
plunger & inlet cover
drainage valve
integrated pressure system
top section: gas storage tank
main parts of the system
drainage valve
gas valve
gas outlet pipe
biogas filter
top section: gas storage tank
plunger slot
integrated pressure system
plunger & inlet cover
waste inlet sink
bottom section: digester tank
fertilizer outlet

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safety
c
e
r
t
i
f
i
e
d
5m
GAS
FILTER
20mmø
10mmø
other safety precautions:
No open ames or sparks within 5
meters (15 ft.) from the system.
Purchase and install a safety valve
when using devices indoors.
(Not included in assembly kit)
Biogas is a ammable gas. Always observe these precautions to prevent accidents:
Only use gas tubing with the right
diameter. Contact Homebiogas if
you need more information.
Do not drink the liquid euence.
Use only devices compatible with
or adapted for biogas use. Visit
homebiogas.com/faq to nd out
how to adapt a stove for biogas use.
Dispose of used gas lters safely –
refer to page 39 for details.
Only install system outdoors so ex-
cess gas can be released safely.
Do not place any object on top of
the system.
20mmø (¾”)
10mmø (⁄”)

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system assembly
1. choose a suitable site 3. install gas pipes & drainage 4. activate system
5. continue feeding &
check for ammable gas
6. initial feeding period
(kitchen waste systems)
2. assemble the system
use system normally!
2 hours 1 hour
wait 1 day
1 - 3 weeks *
2 weeks *
From Assembly to Usage:
Equipment Needed
screwdriver (at) OR
socket wrench 6/7/8 boiling water water (4300 liters) dry sand (112 liters)
Assembly with 2 persons
recommended
*5. continue feeding the system manure as per activation instructions (page 32). you may start trying to light the gas as soon as the gas tank has visibly started to ll
*6. for manure-only systems, there is no initial feeding period and you should continue feeding throughout the activation process (step 5.)
screwdriver (at) OR
socket wrench 6/7/8
*5. continue feeding the system manure as per activation instructions (page 30). you may start trying to light the gas as soon as the gas tank has visibly started to ll
*6. for manure-only systems, there is no initial feeding period and you should continue feeding throughout the activation process (step 5.)
boiling water water (2650 liters/700gal) dry sand (96 liters/25gal)
Assembly with 2 persons
recommended
1. choose a suitable site 2. assemble the system 3. install gas pipes & drainage
5. continue feeding &
check for ammable gas
4. activate system
6. initial feeding period
(kitchen waste systems)
use system normally!
2 hours 1 hour
1-3 weeks*
2 weeks*
wait 1 day
From Assembly to Usage:
Equipment Needed
Scan QR for a step-by-step video
of the assembly process.
(Link to video:
youtu.be/SvV8MbnzRls)

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site selection & preparation
system should be installed in a
sunny area outdoors for
optimum gas production
It is important to choose and prepare the right spot for your HomeBiogas system before installation to ensure
optimum performance and avoid potential damage to the system.
Failure to set up the system according to the following instructions could void the HomeBiogas warranty.
make sure the chosen location has
a level surface - usage on sloping or
non-level ground will damage
system
CAUTION: Ensure that the following conditions are met when choosing a location.
The system weighs more than 4500kg when filled and cannot be moved after installation!
place system within reach of a
water supply.
site selection & preparation
CAUTION: Ensure that the following conditions are met when choosing a location.
The system weighs more than 4600kg (10140lbs) when lled and cannot be moved after installation!
make sure the chosen location has
a level surface - usage on sloping
or non-level ground will damage
system
system should be installed in a
sunny area outdoors for optimum
gas production
system may have mild organic
scent - place away from windows/
doors/outdoors seating
It is important to choose and prepare the right spot for your HomeBiogas system before installation to ensure
optimum performance and avoid potential damage to the system.
The system is not designed to be moved or repositioned after it has been lled.
Failure to set up the system according to the following instructions could void the HomeBiogas warranty.

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system should be installed close
to kitchen/cooking area
prepare at least 2.7 x 5.2m space
for the system
(0.5m side, 0.7m front clearance for
maintenance & daily usage)
prepare a firm, flat surface clear of
obstructions - do not place on soft
or unstable ground
e.g. flat dry ground, tile, concrete
do not place system on shipping
pallets or other weak raised
surfaces
2.7m
5.2m
0.5m
0.5m
0.5m
0.7m
system may have mild organic
scent - place away from windows/
doors/outdoors seating
prepare at least 2.7 x 5.2m (9 x 17ft)
space for the system
(0.5m side, 0.7m front clearance for
maintenance & daily usage)
system should be installed close to
kitchen/cooking area
prepare a rm, at surface clear of
obstructions - do not place on soft
or unstable ground
e.g. at dry ground, tile, concrete
do not place system on shipping
pallets or other weak raised
surfaces
place system within reach of a
water supply.

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preparation for gas pipe installation
The system can be connected to a stove/appliance up to 20m away (13m gas tubing provided).
Plan a suitable route for the gas pipe to ensure optimum gas ow and prevent damage to the pipe -
follow detailed instructions for gas pipe and drainage valve installation on page 26, after assembling system.
General guidelines:
Installation options:
There should be no U-shaped bends along the pipe, where water will collect and block gas ow.
Gas pipes should be installed at a slight angle across their entire length, with a drainage valve installed at the lowest point for
removal of collected condensation.
1. Gas pipe installed underground - passed through
protective PVC pipe
3. Gas pipe xed onto wall or nearby structure
4. Gas pipe suspended on overhead line
2. Gas pipe above-ground
preparation for gas pipe installation
The system can be connected to a stove/appliance up to 40m (130ft) away (17m/56ft gas tubing provided).
Plan a suitable route for the gas pipe to ensure optimum gas ow and prevent damage to the pipe -follow
detailed instructions for gas pipe and drainage valve installation on page 26, after assembling system.
Installation options:
Installation options:
1. Gas pipe installed underground - passed through
protective PVC pipe
There should be no U-shaped bends along the pipe, where water will collect and block gas ow.
Gas pipes should be installed at a slight angle across their entire length, with a drainage valve installed at the lowest
point for removal of collected condensation.
2. Gas pipe above-ground
3. Gas pipe xed onto wall or nearby structure
4. Gas pipe suspended on overhead line

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combined gas tank & digester
*parts shown in this page are not to scale
A
B
overow
clearing rod
sink & inlet pipe
assembly
plunger
gas lter
combined fertilizer
& gas outlet
fertilizer
outow pipe
gas outlet
connecting pipe
10mmø indoor gas tubing, 3m
(20mm connector attached)
20mmø outdoor gas tubing, 2x7m
combined gas tank + digester (box A)
system parts (box B)
combined gas tank & digester
*parts shown in this page are not to scale
gas lter
combined fertilizer
& gas outlet
fertilizer
outow pipe
gas outlet
connecting pipe
sink & inlet pipe
assembly
plunger
overow
clearing rod
10mmø (⁄”) indoor gas tubing with
20mmø (¾”) connector attached, 3m (10ft)
20mmø (¾”) outdoor gas tubing, 2x7m (2x23ft)

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parts bag 1
120mm lip seal rubber ring
(1 spare)
gas tank sand-packs
pipe/tubing joint lubricant
x4
x56
LUBRICANT
1
x4
drainage kit
3
gas tubing T-joint
(20mmø)
ball valve (20mmø)bands for 20mmø
gas tubing
8cm gas pipe
parts bag 2
bands for 20mmø
gas tubing
band for 10mmø
gas tubing
20mmø gas tube screw connector & fitting
20mmø gas
tube straight &
L- connectors 20mm gas tube wall clamps & stakes
x7
x2 x2
2
parts bag 1
parts bag 2
gas tank sand-packs
drainage kit
110mm (4”) lip seal rubber ring pipe/tubing joint lubricant
bands for 20mmø
(¾”) gas tubing
20mmø (¾”) T-joint 20mmø (¾”) ball valve 8cm (3”) gas pipe
band for 10mmø
(⁄”) gas tubing
bands for 20mmø
(¾”) gas tubing
20mmø (¾”) gas
tube straight &
L-connectors
20mm (¾”) gas tube screw connector & tting
20mm (¾”) gas tube wall clamps & stakes

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back front
(gas, fertilizer out) (input sink, waste in)
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A
HomeBiogas logo is located at the
FRONT end of the system
back
HomeBiogas logo is located at the
FRONT end of the system
front
(gas, fertilizer out) (input sink, waste in)

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x4
parts bag
1
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iii
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LUBRICANT
LUBRICANT
parts bag (lubricant)
(lubricant)

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Improper installation of inlet pipe & combined outlet in the HomeBiogas system can damage the digester’s inner liner, causing a leaking digester tank
when filled with water. Follow the steps below to properly insert the pipes, to prevent damage and ensure a functioning system.
check that there is a protective cardboard layer between the
pipe connector openings and the digester’s inner lining. contact
Homebiogas support if this cardboard protector is missing.
i. ii. Lubricate the pipes, align and insert each pipe firmly with the digester on a flat,
hard surface. The cardboard protectors will prevent damage to the inner liner.
iii. Combined Outlet Pipe: Hold onto the rim of the pipe connector with
both hands, use the thumbs to push the outlet pipe in all the way
LUBRICANT
Inlet pipe: Hold onto the folds of the digester fabric around the pipe, support the mouth of
the pipe against your body, and push the pipe all the way into the connector. Take care not
to push the pipe against the inner liner!
Improper installation of inlet pipe & combined outlet in the HomeBiogas system can damage the digester’s inner liner, causing a leaking digester tank
when lled with water. Follow the steps below to properly insert the pipes, to prevent damage and ensure a functioning system.
Check that there is a protective cardboard layer between the
pipe connector openings and the digester’s inner lining. contact
Homebiogas support if this cardboard protector is missing.
Lubricate the pipes, align and insert each pipe rmly with the digester on a at,
hard surface. The cardboard protectors will prevent damage to the inner liner.
Combined Outlet Pipe: Hold onto the rim of the pipe connector with
both hands, use the thumbs to push the outlet pipe in all the way.
Inlet pipe: Hold onto the folds of the digester fabric around the pipe, support the mouth of
the pipe against your body, and push the pipe all the way into the connector. Take care not
to push the pipe against the inner liner!

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i
LUBRICANT
1
parts bag
LUBRICANT
parts bag (lubricant)
(lubricant)

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Inlet sink orientation:
short cord & plunger
slot towards back
long cord
towards front
x2
Inlet sink orientation:
short cord & plunger
slot towards back
long cord
towards front

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back front
(gas, fertilizer out) (input sink, waste in)
1
1
22
with another person’s help, stretch out
digester inner lining with the 4 corner strings
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Before filling the digester, make sure it is
in a suitable location, chosen according
to the site selection criteria in page 7-8.
The digester must be placed on a
flattened, level surface!
back frontBefore lling the digester, make sure it is
in a suitable location, chosen according to
the site selection criteria in page 7-8.
with another person’s help, stretch out
digester inner lining with the 4 corner strings
The digester must be placed on a
attened, level surface!
(gas, fertilizer out) (input sink, waste in)

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* pipes must point inwards when filling
* rest hose on digester & enter inlet pipe from opposite side
* if not using tap water: pH must be between 6.5 and 8.5
* pipes must point inwards when lling
* rest hose on digester & enter inlet pipe from opposite side
* if not using tap water: pH must be between 6.5 and 8.5

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check filled digester for leaks. contact HomeBiogas if
any leaks are seen.
check lled digester for leaks. contact HomeBiogas if
any leaks are seen.

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ii
i
LUBRICANT x2
(lubricant)