PPI H2grO - Greywater for Gardens Owner's Operating Manual

Brand
PPI
Model
H2grO - Greywater for Gardens
Type
Owner's Operating Manual
Automatic Model
OWNERS
OPERATING
M A N UA L
THE ULTIMATE HOMEOWNERS GUIDE TO WATER CONSERVATION AT HOME
1
Manual Model
To the Homeowner
Congratulations on your
decision to recycle water with
an H
2
grO – Greywater for Gardens
irrigation system. H
2
grO has been
designed specifically to be safe and
easy for the homeowner to use
and maintain.
H
2
grO – Greywater for Gardens has
been manufactured for Australian
conditions. WaterMark approval to
Australian Technical Specification
ATS 5200.460-2005, Licence No 21211
has been obtained.
Your garden will benefit from the investment and every
decision to reuse greywater relieves the pressure on
Australia’s precious water resources.
The system is intended to make greywater reuse safe and easy to
facilitate the use of this valuable resource.
To ensure the optimum performance, hygiene and the reliability of your system, please
read this manual carefully and closely follow its straightforward recommendations to
keep your system and your garden in top condition for many years to come.
Additional information can be found on our website. Go to www.h2gro.com.au.
Introduction
Some things to consider before you install...
2
Check your state and local council regulations
Australia’s regulations governing household greywater reuse vary widely from State to State.
Before installing your H
2
grO system, it should be necessary to obtain plumbing works approval.
There may also be conditions regarding where and when greywater may be used on your property.
We strongly recommend you contact your local council for advice on the specific regulations and
setback distances in your region before commencing installation.
It is generally accepted that greywater should only be distributed via a subsurface irrigation
system. This precaution ensures surface runoff is eliminated and that any bacteria that may be
present in greywater is not subject to airborne dispersal.
Only an appropriately licensed plumber/drainer may install an H
2
grO unit and all work must be
in accordance with AS/NZS 3500.2.
Decide which greywater sources you will choose to recycle
Your plumber will need to know which greywater sources you want to recycle before he installs the
pipework, so you need to decide which are the best sources of greywater in your home. We suggest
that you use greywater from baths and showers in preference to basin and laundry water as it
is more dilute and less likely to contain harsh bleach, detergent, solvent and chemicals. Do not
connect to a kitchen water supply as this is likely to be heavily polluted with fats and detergents.
Only use with the correct H
2
grO pods
Due to their narrow water passages, conventional irrigation drippers are not suitable for use with
greywater. H
2
grO is intended to be connected to a network of subsurface irrigation pods. H
2
grO
pods are designed to resist blockage from plant roots or laundry lint and ensure greywater is
distributed at least 100mm below the soil surface. Pods are connected to irrigation pipe with
flexible tube to make it simple to position them around plants. The pod design and flexible tube
connection allows the pods to be easily removed and opened for cleaning.
Placement of subsurface pods and irrigation pipe from the H
2
grO – Greywater for Gardens
system does not require a plumbing licence and is a simple task for the average householder to
install or modify in a few hours. H
2
grO pods, purple H
2
grO irrigation pipe and fittings
are sold separately.
Hi to all at PPI
3
Tips for use
• Divertgreywatertowaste(sewer)duringperiodsofsustainedrainfall.
• NeverallowammableorcorrosiveliquidstopassintotheH
2
grO system; it is dangerous,
will damage the pump and void your warranty.
• Divertgreywatertoseweriflaunderingsoilednappies.
• Divertgreywatertosewerwhencleaningbathsandshowerrecesses.
• Useliquidsoapanddetergentinpreferencetobarsoaporpowdersandselectbrandsthat
are low in Phosphorus and Sodium.
• Seekadvicefromyourlocalplantnurseryregardingthemostsuitableplantspeciesforuse
in greywater-irrigated gardens.
• Run10litresoffreshwaterintotheH
2
grO if leaving home for more than a weekend. This
will ensure that the system stays clean and does not become stagnant.
Automatic Model shown
Greywater in
4
How Works
1 H
2
grO – Greywater for Gardens system diverts greywater supplied from the bathroom and/
or laundry to your garden where it is used to irrigate plants. When you pull the plug on
greywater, it flows down through subfloor drainpipes and into the upper section of the H
2
grO
unit. Your greywater then passes through a stainless steel filter screen which removes lint,
hair and large particles, after which it collects in a pumpwell. When the level rises in the
pumpwell, a float switch activates the pump and the greywater that has collected is pumped
into the subsurface irrigation network.
2 During periods of rainfall or when the greywater quality is unsuitable for garden use, divert
thegreywatertowaste(sewer).Fittinganoptionalrain/moisturesensortotheautomatic
H
2
grO will do this automatically.
Greywater in
To sewer
To garden
Manual Model shown
Manual Model shown
5
To sewer
How Works (cont.)
3 The water flows through a
stainless steel filter screen to
remove large contaminants
such as hair and lint. This
screen is set at an angle so
that as these contaminants
buildup, they will be flushed
to sewer.
4 Should power supply be
interrupted or the H
2
grO
pump develop a fault, the
greywater level will rise in the
pumpwell, overflow through
a weir below the filter screen
and discharge safely to sewer.
5 In the unlikely event that
the council sewer becomes
blocked and backs up into the
H
2
grO, a level sensing switch
mounted inside the electrical
enclosure will prevent the
pump operating and divert
the valve to sewer. Once the
sewer blockage is rectified
the system will need to be
cleaned before resuming
normal operation.
AUTOMATIC
PUMP OFF
Fromsewer
To sewer
6
Model Range
H
2
grO – Greywater for Gardens is available in a manual or an automatic model.
a. Manual Greywater Diverter
The manual greywater diverter is supplied with a two-position
diverter valve to enable you to send greywater directly to waste
(sewer)byrotatingitsleverhandleanticlockwisethrough
90°. Diversion to sewer should be selected during periods
of prolonged rain to avoid soil saturation or whenever harsh
cleaning products are used in the bathroom or laundry.
b. Automatic Greywater Diverter
The automatic greywater diverter is supplied with a
programmable 5-position diverter valve to enable you to send greywater directly to four
separategardenoutletsandoneoutlettowaste(sewer).Itisoperatedelectricallyfroma
controller located within your bathroom or laundry. Electric remote operation eliminates the
need to open the H
2
grO cover to manually select the diverter valve position. The convenience
of having the H
2
grO switch inside your home encourages you to take full advantage of
H
2
grO’s selective water recycling capabilities. This is a unique feature that you will appreciate
for years to come. It is also possible to have switches at more than one point inside the
house; for example in both bathroom and laundry. In this case an Extra Room Switch allows
you to overrride the Controller.
Towaste(sewer)
Greywater in
To garden
Controller
Extra room switch
7
Greywater for Gardens Components
Lid
H
2
grO Housing
Electrical
Enclosure
FilterScreen
Level Sensor
Sewer Outlet
Pumpwell
Optional Electric
5-position Diverter Valve
Irrigation Outlet
4(ElectricModel)
1(ManualModel)
Non-Return Valve
Electrical Cables
Grommets for
inlet pipes
Handle and safety latch
Overowreliefgrate(ORG)
PumpFloatSwitch
Optional Extra Room Switch
(Automaticmodelonly)
Controller
(Automaticmodelonly)
Automatic Model shown
Pump
In new ‘slab-on-ground’ homes, the plumber/drainer will need to position the necessary sewage
pipes and confirm gradients prior to the pouring of footings and floor slab.
In new high-set homes or in retrofit installations, the sewage pipes can be positioned and the
gradient checked at any suitable time.
The source of the greywater needs to be specified by the homeowner or designer before installation.
Inmostsituationsthiswillinvolverunningseparatepipesfordifferentxturesintheroom.For
example, in a bathroom the bath and shower may be connected to one pipe and flow to the
H
2
grO diverter, while the basin, floor waste and toilet may be
combined and flow to sewer.
The lid is fitted with a ‘pop-out grate’ and may be used as an
overowreliefgully(O.R.G.)ifitislocatedinaccordancewith
plumbing requirements.
8
Plumbing Installation Guidelines
Only an appropriately licensed plumber/drainer may install an H
2
grO unit and all work must be
in accordance with AS/NZS 3500.2.
Forthepurposeofplumbinginstallation,anH
2
grO – Greywater for Gardens unit should be treated
as a disconnector gully, located external to the building, supported on a 100mm thick concrete
footing and backfilled as specified in AS/NZS 3500.2.
Graded Concrete Path
DN65 or DN80
uPVC DWV pipes
100mm Concrete
9
Frequently asked plumbing questions
1. Why can’t I run all the fixtures into the 4-way riser under the floor waste and then run
the 100mm pipe to the H
2
grO.
Answer:
The best greywater comes from the bath or shower because the volume of water is relatively
high compared to the amount of shampoo or soap. Conversely, water from the basin
contains lots of shaving stubble, shaving cream, tooth paste etc and very little water. It is
always best to run an individual pipe from the fixtures selected to the H
2
grO.
2. What is the smallest diameter DWV pipe that can be installed under the concrete slab?
Answer:
Pipes downstream of the water seal of a gully trap or unvented branch drain, shall be no
smaller in diameter than 65mm.
(ReferenceAS/NZS3500.2–Clause3.3.3)
3. What is the Maximum distance you can run un-vented 65mm & 50mm pipe?
Answer:
A65mmpipecanberun10m.A50mmpipecanberun6m.ForFixtureswith40mmor
50mm outlets the discharge pipe can be increased in sized to 65mm using a level invert taper
immediately downstream of the fixture trap for the purpose of extending the length of the
fixture discharge pipe to 10m.
(ReferenceAS/NZS3500.22003–Clause3.3.3,Table4.1andAppendixD)
4. What is the Maximum distance you can run vented 65mm & 50mm pipe?
Answer:
There is no limit if the vent is installed in accordance with AS/NZS 3500.2 Section 7.5 clause
7.5.11. The length of the vented discharge pipe is only influenced by the available fall.
5. How is the length of the pipe measured?
Answer:
The length of a discharge pipe is measured from the weir of the trap to the point of
connection to a Gully, Vented Drain or Stack. This measurement includes both horizontal and
vertical lengths.
(ReferenceAS/NZS3500.2–Clause1.5andgure1.1)
6. Can the outlet pipe from the H
2
grO unit cut into an existing vertical stack?
Answer:
Yes. Providing the connection to the stack is 600mm above the base of the stack and the
connection is made with either 45º junctions or sweep junctions.
(ReferenceAS/NZS3500.2-Section6,subsection6.7,clause6.7.2)
7. Can the H
2
grO unit be used instead of an ORG?
Answer:
Yes. The lid is fitted with a “pop-out grate” to relieve surcharge and may be used as an
overflow relief gully provided it is installed so the top is 150mm below the overflow level of
the lowest fixture connected to the drain. In retrofit installations it is highly unlikely that the
H2grO will be fitted below the existing ORG.
10
Graded concrete path or paving
Plumbing Installation Guidelines (cont.)
Step One
Where the unit is to be located in a path or paved area, the top of the H
2
grO cover shall be installed
just above the finished height of the surrounding graded pavement, sufficient to prevent ponding
and ingress of surface water. If not located in a path or paved area, a minimum height of 75mm
shall be maintained between the top of the H
2
grO and the surrounding ground.
100mm concrete
100mm concrete
Holes in
back wall
Hole in
side wall
Raised a minimum of 75mm above ground
Step Two
To provide entry of the inlet pipe, the plumber makes a hole into the H
2
grO housing with a hole saw
and installs a rubber grommet to make a waterproof seal. The inlet pipe may be positioned in either
the back or side wall, opposite the diversion valve and above the filter screen. The height of the
holes will be dependent on the position of the pipe and the fall required from the fixture. The hole
size required is branded on each grommet.
Pipe Size
(mm)
Hole Size
(mm)
DN 50 70
DN 65 92
DN 80 92
11
Plumbing Installation Guidelines (cont.)
Step Three
Theinletpipe(s)penetratestheH
2
grO housing through the rubber sealing grommet. To allow for easy
removalofthelterscreenthepipe(s)shouldextendintotheH
2
grO by no more than 30 to 40mm.
Rubber sealing
grommet
(soldseparately)
100mm Rubber
Seal Adaptor
(supplied)
100mm DWV Trap
(notsupplied)
Step Four
Connection of the moulded polyethylene
H
2
grO housing to a trapped DN100 sewer
drain is achieved with a 100mm Rubber
Seal Adaptor.
Step Five
In high-set construction or where the
greywater entry velocity is high, it is
advisable to press fit a 90° bend to direct the
greywater flow onto the filter screen. Press
fitting the bend allows it to be easily taken off to
make it easier to remove the screen and pump.
Hydraulic Specifications
a. Hydraulic Load
H
2
grO – Greywater for Gardens is defined as a disconnector gully trap in accordance with
AS/NZS 3500.2. It adds no additional load to the drain and therefore does not have a fixture
unit rating.
b. Pump Data
Maximum pump operating head is seven metres.
Pump flow rate is 140Lpm at two metres head
reducing to 0Lpm at seven metres. Maximum
pump operating temperature is 50ºC.
Electrical Connections
Important! All electrical installation works must be undertaken by an appropriately licensed
electrical contractor. Electrical wiring shall be in accordance with AS/NZS 3000.
H
2
grO – Greywater for Gardens is supplied fitted with electrical cables.
The manual model is supplied with:
• 2.5metresofelectricalsupplycable(orange)
The automatic model is supplied with:
• 2.5metresofelectricalsupplycable(black)
• 1.5metresofelectricalcontrolcable(white)
WARNINGS – Manual model
• AfuseisttedwithintheelectricalenclosureinsidetheH
2
grO housing. This fuse protects the
pump. If the fuse fails, replace it with a 20x5mm, 6.3 Amp item. If replacement fuse blows, there
couldbeafaultwiththepumporpowersupply–DO NOTtanotherfuse–havetheunit
serviced.
WARNINGS – Automatic model
• ShortcircuitingtheRedandBlackwireonthecontrolcablewilldamagetheelectronicunit.
BEFORE connecting system to mains supply, connect wiring to the Controller and Extra
RoomSwitches(wheretted)andensuretheyareproperlywall-mounted.Aheatshrinksheath
is supplied on the (RED) wire on the control cable as protection until the wire is properly
connected into an insulated terminal.
• EnsurecontrolcablebetweentheH
2
grO,ControllerandtheExtraRoomSwitch(wheretted)is
a security/irrigation control cable with a minimum of four cores x 0.5mm²
• DonotconnectanExtraRoomSwitchdirectlytotheH
2
grO or the unit will be damaged. The
Extra Room Switch must only be connected to the Controller to function correctly.
12
Head (m)
Flow (L/min)
20 40 60 80 100 120 140 160
10
8
6
4
2
13
Electrical Specification
• AfuseisttedwithintheelectricalenclosureinsidetheH
2
grO housing. This fuse protects the
pump. If the fuse fails, replace it with a 20x5mm, 3.15 Amp fast blow type item. If replacement
fuseblows,therecouldbeafaultwiththepumporpowersupply–DO NOTtanotherfuse–
have the unit serviced.
Manual Layout:
Manual model
Electrical main supply
Power supply isolating
switch
14
Electrical Specifications (cont.)
Automatic H
2
grO (only)
a. 5-Position Valve
An electronically controlled 5-position valve is fitted into the H
2
grO housing.
The valve is prewired, sealed and only serviceable as a complete unit. Opening of the valve
will void warranty.
b. Electrical enclosure
An electrical enclosure is fitted into the H
2
grO housing. The unit is prewired.
A 20x5mm, 3.15 Amp ‘fast blow’ fuse is fitted inside the enclosure to protect the pump.
The enclosure is prewired, and only serviceable as a complete unit.
c. Controller
The Controller is required to control the 5-position valve in the H
2
grO. The Controller is
supplied loose with each H
2
grO for fitting at a convenient location within the house. Security
or irrigation control cable a minimum of 4 core x 0.5mm² must be used for this connection.
d. Extra Room Switch (Optional)
This switch is available as an option. This switch has to be connected to the Controller and
allowstheownertoswitchthegreywaterbetweenthegardenandwaste(sewer)fromanother
location within the house. Security or irrigation control cable a minimum of 4 core x 0.5mm²
must be used for this connection.
e. Rain/Moisture Sensor (Optional)
The H
2
grO has built-in circuitry to allow connection to a Rain/Moisture Sensor. The sensor
needstobeconnected(normallyclosed)withthecontactsopeningwhenrainormoistureis
detected.Theyellowandgreenwiresonthecontrolcable(supplied)areconnectedtogether
and fitted with a heat shrink sleeve. Remove the sleeve, separate the wires and connect to a
sensor with security or irrigation control cable a minimum of 2 core x 0.5mm².
Electrical Specifications (cont.)
Automatic Layout and Wiring Diagrams:
Automatic model
Automatic H
2
grO Wiring Diagram:
15
Electrical
mains supply
Power
supply
isolating
switch
Controller
Extra Room Switch
(Optional)
Control cable
junction box
Cables from H
2
grO housing
Rear view of Extra Room Switch (Optional)
Rear view of Controller
Cable*denotescontrolcable(notsupplied)–usesecurityorirrigationcontrolcable,
minimumm of 4 core x 0.5mm
2
To Optional Rain/Moisture Sensor
Fromelectrical
mains supply
Cable*
Cable*
Cable*
Controller Cable
Electrical
isolating switch
Junction box
Supply Cable
16
Commissioning Procedures
1. Check that surface water does not flow into the H
2
grO. Visually check the H
2
grO is
surrounded by a graded concrete path/paving or alternatively, that the top of the unit is 75mm
above ground.
2. Make a water seal in the 100mm DWV trap to prevent release of odours from the sewer drain.
If necessary, fill the trap with water from a tap.
3. Confirm that the greywater discharges onto the filter screen. Observe the flow of greywater
passing through the filter screen.
4. Check the electrician has completed and checked the wiring.
5. Check garden outlet plumbing is connected. If installing the irrigation system at a later date
fit a hose to each outlet and direct the
flow back into the H
2
grO.
6. Activate the electrical mains supply to
the H
2
grO.
Automatic H
2
grO (only)
The Controller will scroll through a
start-up procedure moving the valve
through all of its possible positions
and ultimately re-directing the greywater to waste.
Thescreenwilldisplay‘USERTOWASTE’(Figure1).
If there are any problems have your licensed electrical contractor
check the connections.
7. Checktheoperationofthepump.Fillthepumpwellwithwater
from a tap to check the cycling of the pump. If pump fails to
operate, have your licensed electrical contractor check the power
connections.
8. Check the operation of the diverter valve.
Manual H
2
grO
Operatethepump(refertoItem7)withthedivertervalveinthe
Sewer and Garden position to check the function.
Automatic H
2
grO
(seetheOperatingProceduressectiononpage20
forfullinstructions).
On initial start-up the valve will be directed to waste and the
Controllerscreenwilldisplay‘USERTOWASTE’(Figure1).
Operatethepump(refertoItem7)tocheckthatgreywateris
being directed into the sewer outlet.
To check the valve diverts to the other outlets, press the ‘OK’
button,thenpressthe‘MENU’button.TheControllerscreen
should now appear as in figure 2.
N.B. The four garden outlets are numbered with a label on the valve (refer to Figure 3).
Only redirect the valve to outlets which have been connected to the garden.
Figure1
Figure2
Figure3
Figure4
17
Commissioning Procedures (cont.)
Press the up ‘’ or down ‘’ button to move the cursor ‘>’ beside
one of the connected garden outlets. Press the ‘OK’ button, the
valve should move to redirect the greywater to the selected garden
outlet.TheControllerscreenshouldnowappearsimilartoFigure4.
Operate the pump to check the function. To check each of the other
gardenoutlets,pressthe‘MENU’buttontoreturntothedisplay
(Figure2)andreselecttheothergardenoutletsin-turnbyrepeating
the steps above.
Operate the pump to check the function at each of the given
outlets. If there are any problems have your licensed electrical and/
or plumbing contractor check the connections.
9. Check the optional Extra Room Switch.
If fitted with the optional Extra Room Switch, confirm that the indicator light changes between
‘GARDEN’ and ‘WASTE’ each time the switch is pressed.
Operate the pump and check the valve redirects to the outlet nominated by the indicator lights.
If there are any problems have your licensed electrical and/or plumbing contractor check the
connections.
10. Check for leaks in connections. Check all connections for integrity and rectify any leaks found.
11. ChecktheoperationoftheoptionalRain/MoistureSensor(iftted).Operatethepumpand
activate the Rain/Moisture Sensing switch by wetting the sensor.
The pump should divert to waste and the Controller screen
shouldnowappearasinFigure7.Ifthereareanyproblemshave
your licensed electrical contractor check the connections. Dry
the sensor and the valve and Controller will reset. If there are
any problems, have your licensed electrical and/or plumbing
contractor check the connections.
Figure7
18
25mm Purple H
2
grO Irrigation Pipe
Pod Zone 3
Pod Zone 2
Pod Zone 1
Pod Irrigation Installation
Installing an H
2
grO distribution system is simple and is easily designed, installed and modified by
the homeowner or a professional irrigation installer.
You should ensure that greywater runoff from your property does not enter neighbouring properties,
water courses and dams. You will need to check local council regulations that stipulate minimum
set back distances.
Once the area has been selected, determine the number of H
2
grO pods required. Allow one pod for
each large shrub; for annuals allow one pod for each square metre of the garden to be irrigated. The
ideal number of pods per zone is between 15 and 25.
Trial and error may be required to achieve even watering. If the number of pods in each zone is
different, you may need to keep the H
2
grO diverted to the zones with more pods, more often than
the zones with fewer pods. If the garden is on a slope, then try to run the pipe along the slope,
rather than up and down the slope. If this is not possible then space the pods further apart at the
bottom of the slope and closer together at the top of the slope. Don’t be too concerned because it is
easy to move or replace pods at any time.
Distribution Manifold
19
Pod Irrigation Installation (cont.)
If more than 25 pods are connected to any one
zone, the greywater distribution will not be
uniform across all pods. Do not install fewer
than 15 pods to any zone as greywater may
enter the H
2
grO at a rate faster than the pump
can distribute it. Over time this may cause your
pump to fail.
Larger gardens require more than one zone of
irrigation. The automatic H
2
grO has four zone
outlets available but the manual H
2
grO should
incorporate a simple distribution manifold,
fitted with in-line valves, to allow individual
zones to be selected for irrigation.
Run 25mm purple H
2
grO irrigation pipe from
the H
2
grO unit or manifold, to the most distant
point in your pod zones and plug the far ends
with 25mm barbed in-line valves, secured
with ratchet clips. The valves allow the
pipelines to be opened for flushing during
annual maintenance. 25mm purple H
2
grO
pipelines should be buried under the soil or
concealed beneath a thick layer of garden
mulch.
Installing the pods:
Usingaholepunch,makeaholeinthe
25mm purple H
2
grO irrigation pipe and
connect the pod’s 6mm flexible tube using
the joiner supplied. The 6mm tube may be
shortened if desired.
In the desired position, bury an H
2
grO pod
upright with its 6mm flexible tube attached
and cover with soil. Provided the top of
the pod is covered with soil, its height will
ensure the greywater is dispersed at least
100mm below ground level.
Repeat this process until all your pods have been installed.
Surface of soil
25mm Purple H
2
grO
100mm
Important
• Greywaterisunsuitablefordistributionthroughconventionallowowdrip
emitters. Use H
2
grO pods for optimum performance.
• NeverallowtheH
2
grO pump to operate against closed valves or blocked pipes as
this will cause permanent damage to the pump.
Hole Punch
25mm In-Line Valves
Distribution Manifold
25mm Purple H
2
grO
H
2
grO Pod
6mm Joiner
6mmFlexibleTube
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PPI H2grO - Greywater for Gardens Owner's Operating Manual

Brand
PPI
Model
H2grO - Greywater for Gardens
Type
Owner's Operating Manual
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