Davey RainBank mkII Installation Instructions Manual

INSTALLATION
Instructions
MKII
2009 WINNER
• Installation
• Operation
• Trouble shooting
® Davey and RainBank are registered trade marks of Davey Water Products Pty Ltd.
© Davey Water Products Pty Ltd 2013.
P/N 401336-11 supersedes P/N 401336-10
ATS 5200.446 Lic WMKA 22042
3
AR
YEARS
UARANT
A N KS
NB
3 YE
ON ALL RA
I
Davey Support Centre
7 Rockridge Avenue,
Penrose, Auckland 1061
Ph:
0800 654 333
Fax:
09 527 7654
Website:daveynz.co.nz
EE
NEW ZEALAND
Davey Support Centre
6 Lakeview Drive,
Scoresby, Australia 3179
Ph:
1300 367 866
Fax:
1300 369 119
Website:davey.com.au
SG
Davey Water Products Pty Ltd
Member of the GUD Group
ABN 18 066 327 517
AUSTRALIA
For any assistance or after sales service contact your Davey
Dealer. For help in locating your closest dealer contact your
appropriate Davey Support Centre listed on the
back of this booklet.
DAVEY GUARANTEE
Davey® Repair or Replacement Guarantee
In the unlikely event in Australia or New Zealand that this Davey product develops any malfunction within warranty
periods beginning from the date of original purchase due to faulty materials or manufacture, Davey will at our option
repair or replace it for you free of charge, subject to the conditions below.
Davey commenced in 1934 and today, as Davey Water Products, manufactures and distributes a
comprehensive range of products for transfer, conservation, treatment and filtration of water.
Davey has a dominant market share in Australia and exports to more than 50 separate countries,
servicing some of the toughest environmental and climatic conditions on the globe.
Davey has maintained its commitment to research and development, resulting in innovative new
products servicing specific and emerging market opportunities. Many of these products have received
multiple awards for innovation and excellence which have led to our induction into the Manufacturing
Hall of Fame in Victoria.
Davey maintains leadership in quality with an environmental focus by holding ISO 9000-2001
accreditation and ISO 14000 environmental standard.
Davey is today a wholly owned subsidiary of GUD, a ‘Top 200’ Australian public company whose shares
are listed on the Australian Stock Exchange.
Now more than ever “Depend on Davey” reflects a business culture of dependable, innovative water
solutions when and where you need them, supported by the best service and advice.
Davey Guarantee Period
RainBank Controller - Three Years
Pump - Two Years
Should you experience any difficulties with your Davey product, we suggest in the first instance that you contact
the Davey Dealer from which you purchased the Davey product. Alternatively you can phone our Customer Service
line on 1300 367 866 in Australia, or 0800 654 333 in New Zealand, or send a written letter to Davey at the address
listed below. On receipt of your claim, Davey will seek to resolve your difficulties or, if the product is faulty or
defective, advise you on how to have your Davey product repaired, obtain a replacement or a refund.
Your Davey Guarantee naturally does not cover normal wear or tear, replacement of product consumables (i.e.
mechanical seals, bearings or capacitors), loss or damage resulting from misuse or negligent handling, improper
use for which the product was not designed or advertised, failure to properly follow the provided installation and
operating instructions, failure to carry out maintenance, corrosive or abrasive water or other liquid, lightning or high
voltage spikes, or unauthorized persons attempting repairs. Where applicable, your Davey product must only be
connected to the voltage shown on the nameplate.
Your Davey Guarantee does not cover freight or any other costs incurred in making a claim. Please retain your
receipt as proof of purchase; you MUST provide evidence of the date of original purchase when claiming under the
Davey Guarantee.
Davey shall not be liable for any loss of profits or any consequential, indirect or special loss, damage or injury of
any kind whatsoever arising directly or indirectly from Davey products. This limitation does not apply to any liability
of Davey for failure to comply with a consumer guarantee applicable to your Davey product under the Australian
or New Zealand legislation and does not affect any rights or remedies that may be available to you under the
Australian or New Zealand Consumer Legislation.
In Australia, you are entitled to a replacement or refund for a major failure and for compensation for any other
reasonably foreseeable loss or damage. You are also entitled to have the goods repaired or replaced if the goods fail
to be of acceptable quality and the failure does not amount to a major failure.
Should your Davey product require repair or service after the guarantee period; contact your nearest Davey Dealer
or phone the Davey Customer Service Centre on the number listed below.
For a complete list of Davey Dealers visit our website (davey.com.au) or call:
* Installation and operating instructions are included with the product when purchased new.
They may also be found on our website.
2
35
Notes
CONTENTS
About RainBank® . The easy way to save water.
4
Two types of installation - quick reference
5
How RainBank® works
6
How to install RainBank®7
Before you start
9
Installation instruction
11
Pump outside tank option
12
Pump inside tank option
14
Float switch installation
18
Installation of Submersible Pumps
25
Priming Pumps
26
Maintaining RainBank®28
Trouble shooting RainBank®29
Warnings32
34
Plumbers Tips
33
Davey Guarantee
35
Contact Details
36
3
About RainBank®
The easy way to save water
Your actual savings depend on your roof
catchment area, rainfall and the size of
your tank.
PLUMBERS TIPS
Congratulations on your purchase of
a high quality Australian made Davey
RainBank® automatic water controller.
RainBank® is patented and has been fitted
to thousands of homes.
RainBank may allow you to claim
tank rebates (when installed on
existing homes). Check with your
local water authority.
2.Fit first flush devices to all down pipes to ensure clean water inside the tank (dirty
tank water can stain toilets & clothes).
•RainBank® allows you to use water
from your rainwater tank for your
toilet, washing machine or garden
whenever there is water in the tank.
In some areas of Australia, having a
RainBank® and using rainwater for
your toilet and washing machine allows
you to claim tank rebates paid by state
governments and some councils.
®
• If the tank water is exhausted
RainBank® is energy efficient and
RainBank® automatically and
seamlessly switches you over to mains cheap to run.
water.
Because RainBank® only works when it is
needed it uses very little energy.
•RainBank® has an in-built “dual
check valve” for low hazard back flow
The daily power used to run a RainBank®
prevention.
and pump system supplying two toilets in
®
a three person dwelling is equivalent to:
RainBank can save up to 40% of
your home’s usage of mains water,
•A reverse cycle air conditioner for
which could be up to 100,000 litres
3 minutes
of water a year.
•A clothes dryer for 3 minutes
1.Install pump on a level, solid, well drained site (this will reduce noise and pipe
stress).
3.Clear swarf from all pipes and holes drilled into the tank (swarf can block valves,
RainBank® and toilet valves). Fit a 200 micron ‘Y’ strainer before the pump or
between the pump and RainBank.
4.Fit a stop valve on mains water line before RainBank (makes servicing easier).
5.Fit a stop valve between pump and tank outlet (makes servicing easier).
6.Check with local council plumbing teams for backflow requirements.
7.Keep pipe work well braced as vibrations can become noisy.
8.Fill rainwater tank above float switch with garden hose to check system.
9.Make sure pump is full of water (primed) before leaving site. Flush all air outof
system by running pump with an outlet downstream open.
Protect from the weather
Don’t create air locks!
Fit isolation valves
Prime pump before switching on
•A washing machine for 10 minutes
4m
•A TV or PC for 30 minutes
5m
5m
100,000 Litres
4
33
32
Important:
All pipework and outlet
fittings from RainBank® must
be labelled to AS/NZS 3500
Rainwater supply via pump
Warning:
Do not reconnect with
mains water supply
Manual start button
Float switch
9
Stop valve
7
8
RainBank® Power lead
6
Pump Power lead
5
3/4” BSP Male thread
4
3/4” BSP Male thread
3
1
4
9
2
5
3
In-tank Option
8
(see page 14)
Model No. KRBS1&2
1
6
Model No. KRBS1&2
!
6
(see page 12)
Above Ground Option
9
4
2
8
3
5
Model No. KRB1,2,3&4
Note: If the supply cord is damaged, it
must be replaced by manufacturer, its service
agent or similarly qualified persons in order to
avoid a hazard.
7
•Secure all openings to the rainwater
tank to ensure it will not permit access
to children.
Note: In order to carry out routine
maintenance to the RainBank® MUST be easily
accessible to the end user or home owner.
6
• Do not enter a empty rainwater tank
- they may contain hazardous gases.
!
1
•Check with your local water authority
on water restrictions when your
rainwater tank is connected to mains
water.
! Note: When installing a RainBank®
and/or associated pump system inside a
building, allowance for possible high pressure
leakage MUST be made.
Model No. KRB1,2,3&4
•RainBank® must be installed and
serviced by a licensed plumber.
Installation Inside Buildings: To
cater for possible plumbing leaks or damage
to the RainBank® system components, the
installation must include an enclosure that will
capture any water spraying from the plumbing
or RainBank® system and direct it into a
properly constructed drain tray.
IN-TANK option
• WARNING: Water freezing inside
the RainBank® will damage the unit.
Locate your RainBank® and pump
so that they are not susceptible to
freezing.
!
Above ground option
•Before installing your RainBank®
controller, please read all instructions
carefully as failures caused by
incorrect installation or operation are
not covered by the guarantee. Your
RainBank® controller is designed
to handle clean water. The system
should not be used for any other
purpose without specific referral to
Davey. The use of the system to
pump flammable, corrosive and other
materials of a hazardous nature is
specifically excluded.
2
WARNINGS
Mains water supply
900kPa Maximum
TWO TYPES OF
INSTALLATION
5
how rainbank® works
1. When there is demand for water
from your toilet, washing machine or
garden tap, RainBank® senses
this demand and checks the level of
water in the rainwater tank.
Note: demand must be greater than
1.5 litres per minute or mains water
will be delivered.
2. If there is rainwater in the tank
RainBank® switches on the pump.
The pressure of the pump is
sufficient to overcome the pressure of
the mains water inside RainBank®
and this moves a plunger and allows
the rainwater to flow.
Note: mains water pressure is not
restricted.
3. When there is no longer a demand for
water, RainBank® detects that water
has ceased to move inside the pipes,
switches off the pump and waits for
another water demand.
4. If RainBank® senses a water
demand and detects insufficient water
in the rainwater tank it will
automatically allow the mains water
to flow.
5. If there is a power failure during a
demand for water RainBank® will
automatically supply the mains
water as backup.
6
OTHER SYMPTOMS:
What are the advantages of
RainBank® over conventional
air-gap systems?
•RainBank® is totally hands off and
needs no maintenance or adjustment.
•RainBank® is easy to install.
•RainBank® does not require mains
water to be re-pumped and
therefore saves energy.
•RainBank® is WaterMark approved
- this means plumbing inspections
will be approved & your plumbers
insurance should cover installation
faults.
•RainBank® will provide mains water
as backup when:
- there is no rainwater
- there is no electricity to run pump
- the pump has been removed for
servicing. Air-gap systems rely on
pumps to pressurise all water
and do not function without
them.
Mains water is still in use when
pump is running. Possible cause pump needs to be primed. Stop pump
and remove priming plug from front top of
pump (right above water inlet) and allow
all air to escape from pump. Replace the
priming plug when water dribbles out of
hole (see page 26).
Mains water is still in use when
pump is running. Possible cause
- debris is caught inside RainBank
preventing plunger mechanism from
sealing completely. Contact your plumber
to fit a ‘Y’ strainer to system between tank
& RainBank.
Mains water is still in use when
pump is running. Possible cause pump impeller blocked. Have pump
serviced. Fit first flush devices and ‘Y’
strainer to pipework.
Mains water not passing through
RainBank®. Possible cause - RainBank®
installed backwards. Install RainBank®
according to installation & operating
instructions. Arrow on top of RainBank
indicates direction of flow.
Mains water not passing through
RainBank®. Possible cause - debris is
blocking inlet to RainBank®. Remove
RainBank® and clean inlet. Check all
filters are clean.
Mains water pressure and flow too
low. Possible cause - there is a check
valve or PRV installed between RainBank®
and tank. Remove check valve or PRV
from plumbing. Check all filters in
plumbing are clean.
Pump hums. Possible cause - pump is
jammed or seized. Have pump serviced.
Water leaking from connection
between pump and RainBank®.
Possible cause - installer has failed
to fit connection kit correctly. Remove
RainBank® and re-install connection kit.
Mains water filling up tank. Possible
cause - debris caught inside RainBank®.
Install first flush devices and ‘Y’ strainer.
Green light flashing.
Boot-up sequence only.
Red light flashing. Pump has lost prime
and needs to be filled with water, see page
26. Pump will automatically retry at: 1, 5,
30, 60 and 120 minute intervals.
Pump takes 10 seconds to start. This
is anti-cycling software that allows
1 start every 10 seconds.
31
SYMPTOM: PUMP WILL NOT SWITCH ON
1. Pump not plugged in.
Plug pump into base of RainBank®
and RainBank® into power supply.
See page 20.
2. No power supply to pump.
Contact electrician and have power
restored.
3. Float switch not connected to
RainBank®. Plug float lead into
base of RainBank®. The connection
lead is located next to the power lead
coming from the RainBank®. To
confirm the connection is correct,
depress ‘manual override’ button, pump will start.
4. No water in tank.
Check water level in tank.
5. Float switch located at water
tank is installed incorrectly.
Check position of float. See page 16-19.
6. Mains water supply not
connected to RainBank.
RainBank® system must have a
pressurised water supply connected to
inlet. Press ‘manual override’
button to simulate mains water
flowing.
7. Mains supply to RainBank
turned off. Turn on mains water
supply. Press ‘manual override’
button to simulate mains water
flowing. Pump will start is rain water
is available.
8. Pump is faulty.
To confirm if the fault is within the
pump, plug the pump directly into
power point and check to see if it
starts. If the pump starts plug the
pump back into the RainBank® and
continue fault finding. If the pump
does not start contact your supplier for
further advice.
9. Lead from float switch to pump
broken or damaged.
Replace float and lead assembly.
10.Float switch defective.
Contact your supplier for further
advice.
11.Mains water flow is too low.
Ensure flow at most distant outlet is above 5 litres per minute.
how to install rainbank
®
! IMPORTANT
Because it involves mains water,
RainBank® may only be legally
installed by a licensed plumber.
Ensure mains water pressure is
limited to 900kPa.
NOTE: Because the effects of seasonal
change etc. can cause the
pump and tank to move slightly
relevant to the home it is highly
recommended that discharge and/
or suction pipe lines be fitted with
flexible pipe, such as braided
hose, reinforced suction hose or
polythene pipe.
Different types of RainBank®
Installations
Tank: above ground
Pump: outside tank
Float switch: must be installed inside
of tank
Pump Kit: KRB1,2,3&4
Installation type 2 - PAGE 21
Mains In
To House
Tank: above ground
Pump: submersible inside tank
Float switch: incorporated with pump
Pump Kit: KRBS1&2
Installation type 3 - PAGE 22
Mains In
There are different ways a RainBank® can
be installed depending on your rainwater
tank and pump configuration.
To House
Installation type 1 - page 16
Mains In
To House
®
30
FS
Tank: below ground
Pump: submersible inside tank
Float switch: incorporated with pumps
Pump Kit: KRBS1&2
7
Installation type 4 - PAGE 23
Mains In
To House
Different ways of installing the
RainBank® unit itself.
•Exposed installation against wall
(under eaves).
Mains In
To House
FV
Tank: Below ground and at ground level
Float switch: Top entry
Pump Kit: KRB1,2,3&4
•Encased installation with unit and
pump inside cover.
Mains In
To House
TROUBLE SHOOTING
RAINBANK®
SYMPTOM: PUMP WILL NOT SWITCH OFF
1. Pump plugged directly into
power outlet. Plug lead from pump
into base of RainBank® as per
installation instructions on pg 20.
2. Water is still being used.
Check all taps, toilets and appliances
connected to RainBank® system to
ensure they are turned off.
3. Water is leaking on discharge
side of RainBank® system.
Check for leaks and repair.
4. Rock or debris caught inside
RainBank®.
Call your plumber to fit a Y strainer
- RainBank® will need to be returned
to Davey.
• Integrated installation incorporated as
part of tank system.
Mains In
To House
8
29
maintaining rainbank
®
RainBank® does not need maintenance
but there are things you can do to ensure
its most reliable operation.
• Fit a “first flush” system that ensures
the first run of dirty rainwater does not
go into the tank.
•Clean your gutters and first flush devices and ‘Y’ strainers regularly.
•Remove branches that over hang your
roof.
•Have a strainer fitted to your rainwater
tank inlet and regularly check this for
leaves and twigs, etc.
•
You should also check for debris in
the bottom of your tank a few times a
year and clean this out if necessary. A
first flush system will greatly reduce
the need for this action.
! IMPORTANT MAINTENANCE
PRECAUTIONS
• Davey pump motors are fitted with an
automatic thermal overload switch
that stops the motor if the motor
gets too hot to avoid damaging it.
This automatically re-starts the motor
when the temperature within the
pump has dropped to a safe level.
Constant tripping of this switch
indicates a problem e.g. Low voltage
at pump, etc.
28
•This automatic thermal overload
switch can start the pump without
warning. Always disconnect the
controller and/or pump motor from the
electrical supply before maintenance
or repairs.
•Care should also be taken when
servicing or disassembling pump to
avoid injury from hot pressurised
water. Unplug the pump, relieve
the pressure by opening a tap on the
discharge side of the pump and allow
any hot water to cool before
attempting to dismantle.
•
Do not use petroleum based fluids or
solvents (e.g. oils, kerosene,
turpentine, thinners, etc on the plastic
or seal components).
• Do not use hydrocarbon based or
propelled sprays around the electrical
components of the controller.
•
During servicing use only approved
non petrochemical based oring and
gasket lubrication. If unsure consult
your Davey dealer for advice.
before you start
!IMPORTANT:
• If you are in doubt about any aspect
of your RainBank® kit’s suitability,
check with your Davey dealer. For
help in locating your closet dealer
call the appropriate Davey Customer
Service Centre listed on the back of
this booklet.
•RainBank® is designed to handle
clean rainwater and mains water. It
should not be used to interconnect as
part of a bore water, dam water,
grey water, stormwater or recycled
water system without appropriate
additional back flow.
• Make sure the wiring, plumbing and
the RainBank® unit are protected
from access by children and pets.
Other things we recommend to
maximise the performance and
serviceability of your RainBank®.
•
Fit a first flush system to the guttering if possible to divert the initial run of water from the roof that may contain dirt and pollutants.
• Fit a strainer to the top of your tank
inlet to stop leaves entering the
system.
• Fit a 1 inch ‘Y’ strainer with 200 micron mesh to the pipe work
between the pump and RainBank®. This will ensure that debris from the tank will not build up inside RainBank®, washing
machines or toilet cisterns.
•Use at least 20mm or 3 ⁄4 inch
plumbing to and from RainBank® to
reduce the effect of pipe friction. Galvanised pipe not recommended.
9
Make sure the delivery from
RainBank® to your home is within the
following pipe length limits:
Pipe
diameter
15mm
18mm
20mm
Max. pipe
length @
6 lpm flow
1m
90m
235m
Max. pipe
length @
12 lpm flow
1m
27m
135m
For each bend or tee you should reduce
the above distances by 0.5m.
• We recommend fitting isolation valves
to the rainwater and mains water pipe
so that the RainBank® can be easily
and conveniently removed if
required. This saves both wasting
rainwater and having to turn off the
mains supply if the unit ever has to be
removed.
• Double check valve assemblies are
available from Davey and should be
installed if the tank is partially or fully
buried.
Type 4 installations. External suction
pump drawing from below ground
tank.
• Mains water must be limited to below
900kPa.
Pump inlet should be at least (200mm)
below the lowest water level for reliable
operation.
Priming is as for Type 1 installations.
If there is a significant amount of water
required to do this it can be a good idea
to fit the highest area of the pipe with an
access plug in a T piece so that the pipe
can be filled more quickly with a bucket
when repriming.
• While RainBank® does have an in-built
DUAL CHECK back flow prevention
valve, some water authorities require
an additional external back flow valve
to be plumbed into the mains water
delivery line, to prevent any possible
contamination of mains water by
rainwater, particularly if the tank is
partially or fully submerged. Check
with your local water authority for their
plumbing guidelines on rainwater
tanks.
10
27
priming pumps
Type 1 installations. Above ground
tank and pump outside tank.
1.Remove the priming plug on the
top of the pump and fill the casing
and suction line with water then refit
plug. If there is an isolation valve
fitted on the delivery pipe from the
rainwater tank (as recommended) this
needs to be opened.
If there is an air lock i.e. the pipe and
pump casing is not fully filled with water,
the pump may not draw water. If this is
the case you should repeat the priming
procedure. If the pump still does not draw
properly this may be a fault in the way
the delivery pipe is installed. The pump
should be slightly higher than the pipe
inlet and this should run up hill to the
pump at a slight but consistent slope so
that any air is expelled at the pump end as
the pump is primed.
26
2.Hold down ‘manual override’ button
on the RainBank to operate pump to
clear trapped air. Make sure an outlet
(tap) is open so that air and water can be
dispelled. Make sure the mains water is
turned off until the pump is fully primed.
! IMPORTANT
Leaky joins can also cause a loss of
prime.
Note: The pump must be below the float
switch.
Type 2 and 3 installations.
Submersible pumps inside tank.
Provided the pump is sitting in sufficient
water the pump will self prime and push
air out of the taps and appliances that are
used at the other end. To let this air out
without causing damage it is important
that:
•All taps connected to the rainwater
system are turned on
•Toilets connected to the system are
flushed so the cistern fills and any air
is cleared from the line.
INSTALLATION INSTRUCTIONS
Things you should be aware of:
• Before installing RainBank® please
read all instructions carefully as
failures caused by incorrect
installation are not covered under
warranty.
•RainBank® is designed to handle
clean water and should not be used
for any other purpose without specific
referral to Davey. The use of
RainBank® to pump flammable,
corrosive or other materials of a
hazardous nature will damage the
system and void the warranty.
•The pumping of abrasive materials
will damage the system and void the
warranty.
• Water freezing inside the RainBank®
will damage the unit. Locate your
RainBank® and pump so that they are
not susceptible to freezing.
•Some insects such as small ants find
electrical devices attractive for
various reasons. If your controller or
pump is susceptible to insect
infestation you should implement a
suitable pest control plan.
• An inline ‘Y’ strainer between the
pump and the RainBank® controller is
recommended to stop foreign matter
entering the unit and damaging it.
•All pipe work and fittings should be
labelled in accordance with local
standards such as Australian
Standard AS/NZS 3500. This standard
requires that all pipework containing
rainwater is marked with green
‘rainwater’ tape or stickers at 1
meter intervals and every outlet that
may deliver rainwater is to be
permanently signed with ‘Rain Water’
signage or a green tap marked ‘RW’.
•Ensure all wiring, plumbing and the
RainBank® unit are protected from
access by pets and/or children.
• Mains electrical connections and
checks must be made by a qualified
electrician and comply with applicable
local standards. The 5 volt float lead
connections need not be carried out
by a qualified electrician, but should
be done in compliance with applicable
standards.
• In accordance with AS/NZS
60335.2.41 we are obliged to inform
you that this controller and any pump
controlled by it is not to be used by
children or infirm persons and must
not be used as a toy by children.
• Limit mains water pressure to
900kPa.
11
pump outside tank
option - overall
INSTALLATION OF
SUBMERSIBLE PUMPS
3.Place pump into tank.
!
Union
Model No. KRB1,2,3&4
PVC pipe
8 tie
Cable
3
IMPORTANT
Do not pull on power lead. Fit a
rope to handle for lowering and
raising pump.
1
6
2
4. Davey recommends the fitting of
floating inlets to submersible pumps
to minimize any possibility of sludge
intake. Part number to suit pump
D42A/B is FI-42.
Handle
Pump
Float switch
1
4
3/4” BSP Male thread
3
3/4” BSP Male thread
4
Pump Power lead
5
RainBank® Power lead
6
Stop valve
1.Use Teflon tape on the pipe
to pump connection.
7
Float switch
7
6
8
8
Manual start button
2.Secure the power cable to the delivery
pipe with cable ties.
9
Rainwater supply via pump
4
3
8
5
5
3
9
9
1
5
4
5
3
9
9
7
2
6
2
8
2
4
Mains water supply
900kPa Maximum
1
6
2
1
1
Mains water supply
900kPa Maximum
2
3/4” BSP Male thread
3
3/4” BSP Male thread
4
Pump Power lead
5
RainBank Power lead
6
Stop valve
7
Float switch
8
Manual start button
9
Rainwater supply via pump
®
Warning:
Do not reconnect with
mains water supply
6
6
Above Ground Option
12
In-tank Option
Above Ground Option
Model No. KRB1,2,3&4
Model No. KRBS1&2
Model No. KRB1,2,3&4
Important:
All pipework and outlet
fittings from RainBank® must
be labelled to AS/NZS 3500
In-tank Option
Model No. KRBS1&2
Warning:
Do not reconnect with
mains water supply
Important:
All pipework and outlet
fittings from RainBank® must
be labelled to AS/NZS 3500
25
24
RAINWATER
SUPPLY
from discharge
of rainwater pump
200 Micron ‘Y’ Strainer
recommended but not
supplied.
Power to pump via
3 pin socket - plug the
rainwater pump in here.
3/4" BSP M
E
B
20mm hole
200mm
Stop valve
TO TOILETS
AND/OR
LAUNDRY
(do not mix/cross-connect
with mains water supply)
100
1" BSP M
B
D
Incoming power
to RainBank®
via 3 pin plug
E
100
3/4" BSP M
100
D
WARNING: DO NOT FIT CHECK VALVES BETWEEN RAINBANK®, PUMP
AND TANK, UNLESS PUMP IS ABOVE MAXIMUM WATER LEVEL OF TANK.
Step 6 – Connect RainBank® to the
pump.
100
A
Stop valve
Step 5 – Align the RainBank® for easy
fitting to the plumbing.
A
MAINS
WATER SUPPLY
The plug end should be plugged into the
float switch inlet on the underside of the
RainBank® unit in Step 8.
Step 9 – Test the unit - page 21.
* Pressure Limiting Valve
This is secured to the pump suction
pipe with cable ties. Allow no more than
100mm of cable between the float and the
lowest cable tie.
IMPORTANT: All pipework and outlet fittings from RainBank® must be labelled to AS3500. TANK MUST HAVE ISOLATION VALVE FITTED. DO NOT CONNECT WITH
CRIMPED FITTINGS.
Step 8 – Connect all leads.
RainBank® MUST BE INSTALLED
HORIZONTALLY AS ILLUSTRATED.
Step 4 – Install the float switch. Check
that the float switch lead (9m long)
will reach the RainBank®. For greater
distances between your rainwater tank
and pump, a 10m float switch (top and
side entry) extension lead (Davey Part
No. 14186) will need to be added. Up
to 4 float switch extension leads can be
added between the pump and the rainwater
float switch lead. It is recommended that
the float switch extension lead/s are in a
protective cinduit.
The float end should be set up so it can
fall no lower than 100mm above the level
of the lowest point in the inlet pipe so the
pump will always be shut off well before it
can run dry or draw in air.
PUMP OUTSIDE TANK
OPTION - CLOSE UP
Step 7 – Connect RainBank® to the
E
plumbing.
WHERE MAINS PRESSURE EXCEEDS 900kPa.
A PLV* MUST BE FITTED TO INLET!
Step 3 – Plumb up your suction
plumbing ensuring that the lowest point
in the inlet pipe is at least 200mm below
the lowest water level and at least 100mm
above the base of the tank.
13
PUMP INSIDE TANK
OPTION - OVERALL
You should carry out the following
steps as per the instructions for
Installation Type 1
Step 2 – Work out the position of your
RainBank® with regard to distance to
power. The float switch lead is not an
issue here.
Model No. KRBS1&2
1
2
8
Step 4 – Align the RainBank® for easy
fitting to the plumbing. Fit Davey wall
bracket.
6
3
Step 5 – Connect RainBank® to your
submersible pump as per instructions on
page 25.
1
4
6
2
8
3
5
9
1
4
6
2
4
8
5
5
3
9
9
7
1
Mains water supply
900kPa Maximum
2
3/4” BSP Male thread
3
3/4” BSP Male thread
4
Pump Power lead
5
RainBank® Power lead
6
Stop valve
1
Mains water supply
900kPa Maximum
2
3/4” BSP Male thread
3
3/4” BSP Male thread
4
Pump Power lead
5
RainBank® Power lead
6
Stop valve
7
Float switch
8
Manual start button
9
Rainwater supply via pump
7
Float switch
8
Manual start button
9
Step 6 – Connect the RainBank® to the
plumbing.
Step 7 – Connect all leads (no float
switch lead to plug in)
! IMPORTANT
•Under Australian Standard 3500
collecting/storing rainwater in a partially buried tank is considered a medium level hazard. Even though RainBank® has a built-in dual check back flow valve you may be required to
fit additional backflow protection valves to satisfy this requirement.
NOTE: To allow for the correct operation
of your RainBank® and for
movement of the tank and pump
which may occur over time, the
suction pipe must have a length of
flexible suction hose from pump
to top of tank. This hose can be
braided hose, reinforced suction
hose or polythene pipe at least 1
metre in length.
Step 8 – Test the unit - page 21
The following sections of the Type
1 installation instructions are
applicable to Type 4 installations.
Installation Type 4
Below ground tank with pump above
tank and suction lift
Step 1 – Evaluate and select the best
pump site as close to the water source
and water level as possible.
Mains In
To House
Rainwater supply via pump
Warning:
Do not reconnect with
mains water supply
Warning:
Step 2 – Work out the position of your
RainBank® with regard to distance to
power.
Do not reconnect with
mains water supply
6
Above Ground Option
14
In-tank Option
Model No. KRB1,2,3&4
In-tank Option
Model No. KRBS1&2
Model No. KRBS1&2
Important:
All pipework and outlet
fittings from RainBank® must
be labelled to AS/NZS 3500
Important:
All pipework and outlet
fittings from RainBank® must
be labelled to AS/NZS 3500
FV
23
• Failure to prime the submersible
pump prior to connection of the pump
to RainBank® can cause an air lock
that may prevent the pump operating
properly.
PUMP INSIDE TANK
OPTION - CLOSE UP
Installation Type 3
Below ground tank with submersible
pump D42A/B & D53A/B
Mains In
IMPORTANT: All pipework and outlet fittings from RainBank® must be labelled to AS3500. DO NOT CONNECT WITH CRIMPED FITTINGS.
To House
22
WARNING: DO NOT INSTALL CHECK
VALVES BETWEEN PUMP AND RAINBANK®.
RAINWATER
SUPPLY
from discharge
of auto submersible
rainwater pump
Power to pump via
3 pin socket - plug the
rainwater pump in here.
200 Micron
‘Y’ Strainer
1" BSP M
3/4" BSP M
Incoming power
to RainBank®
via 3 pin plug
Step 8 – Test the unit - page 21.
There is no need for a separate float
switch as this comes attached to the
submersible pump and does not plug
into the RainBank® unit.
Stop valve
Step 7 – Connect all leads as per
Installation Type 1 on page 20. There is
no float switch lead as this is fitted to the
submersible pump.
MAINS
WATER SUPPLY
Step 6 – Connect the RainBank® to the
plumbing as for Installation Type 1 on
page 19.
•Under Australian Standard 3500
collecting/storing rainwater in a partially buried tank is considered a medium level hazard. Even though RainBank® has a built-in dual check back flow valve, you may be required to fit additional backflow protection valves to satisfy this requirement – check with your local council as to their guidelines on rainwater tank
installation and backflow prevention.
* Pressure Limiting Valve
Step 5 – Connect RainBank® to your
submersible pump as per instructions on
page 25.
! IMPORTANT
WHERE MAINS PRESSURE EXCEEDS 900kPa.
A PLV* MUST BE FITTED TO INLET!
Step 4 – Align the RainBank® for easy
fitting to the plumbing and fit Davey wall
bracket if required.
TO TOILETS
AND/OR
LAUNDRY
(do not mix/cross-connect
with mains water supply)
Step 2 – Work out the position of your
RainBank® with regard to distance to
power. The float switch lead is not an
issue here.
3/4" BSP M
The following sections of the Type
1 installation instructions are
applicable to Type 2 installations.
15
To protect against electrical surges and
lightening strike damaging RainBank® or
its pump we strongly recommend the use
of a suitable surge protection device and
residual current devices.
Installation type 1
Above ground tank and pump
outside tank. Suitable kit models:
KRB1,2,3&4
Mains In
To House
FS
Tools you will need
•Adjustable spanner 2” or 50mm
(across flats)
•Second adjustable spanner 2” or
50mm (across flats)
•Thread tape
• 20mm spade bit or hole saw to drill
hole in top of tank for float switch.
• If you are mounting the RainBank®
to a wall as a bare installation you
will need the Davey RainBank® wall
mounting bracket
(Part number 32556).
Step 2 - Rainbank® position
Work out where the RainBank® will be
positioned.
Check that there is a power point within
reach of the 3 metre power lead.
! Installation Inside Buildings: To
cater for possible plumbing leaks or damage
to the RainBank® system components, the
installation must include an enclosure that will
capture any water spraying from the plumbing
or RainBank® system and direct it into a
properly constructed drain tray.
!
2. Fill the rainwater tank with sufficient
water to activate or cover the float
switch.
6.Check for leaks around RainBank®, the
pump, pipework and fittings.
Installation type 2
Above ground tank with submersible
pump inside eg: KRBS1&2
Mains In
Note: When installing a RainBank
and/or associated pump system inside a
building, allowance for possible high pressure
leakage MUST be made.
®
Step 1 - pump position
Evaluate and select the best pump site.
This must be below the lowest anticipated
! Note: In order to carry out routine
level of the float switch and this level
maintenance to the RainBank® MUST be easily
should be at least 100mm above the base
accessible to the end user or home owner.
of the tank to avoid sludge being drawn
into the pump.
! IMPORTANT
Do not use long mains power extension
The pump site should be well drained and leads as they cause substantial voltage
have a firm base. A concrete slab 600mm drop, poor performance and can lead to
motor overload.
x 600mm is ideal.
Check that the float switch lead
(9m long) will reach the RainBank®.
16
Step 8 - TESTING
Test the operation of RainBank®.
1. With the mains connected and the
rainwater tank empty turn on one
of the taps in the laundry that feed
the washing machine or flush the
toilet. Mains water should flow
normally. The pump should not turn
on. The ‘status’ light should glow
‘red’ to indicate that mains water is
being used. When this is completed
turn off tap.
5.Remove the float switch connection
from the RainBank® – this should
stop the pump and confirms that
the float switch and power
connections have been made correctly
– refit the float switch connection. The
‘status’ light will now glow ‘red’.
Press the manual override button
to operate the pump if needed. The
‘status’ light will glow ‘yellow’
while the manual override button is
depressed.
NOTE: Mains water indicator light is
not applicable in RainBank® ‘S’
models.
3.Check that the pump is correctly
primed and there are no air locks that
will interfere with its operation as per
the Davey instructions. This is
essential for the proper operation of
the unit. See the instructions on how
to do this for all types of Davey pump
in the Priming section on page 26.
4.Turn on a tap or flush a toilet in
the rainwater system. The pump
should run and deliver rainwater.
Allow to run for several minutes to
clear air from pipes. The ‘status’ light
will now glow ‘green’.
To House
IMPORTANT
!•This type of pump comes with its own
float switch system to detect water
level so it is not necessary to drill the
tank to fit a float switch.
21
D
• It is highly recommended that an
isolation valve be fitted to where the
mains water enters RainBank® and
between the pump and the rainwater
tank. This facilitates easy removal
of the unit if required without turning
off the household water or losing
stored rainwater.
• Do not use thread sealing compounds,
hemp or pipe glue. Do not use crimped fittings.
•All RainBank plumbing fittings feature
rotating unions that require bracing.
• If your access to the bottom of the
RainBank® unit is difficult you may
have to connect the 5 volt connection
from the float switch before the
plumbing is connected.
Connect all leads.
Step 7
1.Connect the pump power lead to
the three-pin socket underneath
RainBank®.
! IMPORTANT
This must connect to the RainBank®
controller not the power point. If the
pump is connected to the power point
the pump will run constantly,
shortening the life of the pump and
potentially running the pump dry.
2.Connect the three-pin power plug from
the RainBank® to your power point.
3. Connect the 5 volt lead from the float
switch to its flying lead; in the
underside of the unit. This is
not necessary if you are using a
submersible pump as the float switch
is already part of the pump.
MAINS
WATER
SUPPLY
TO TOILETS
AND LAUNDRY
RAINWATER
SUPPLY
Incoming power to RainBank®
via 3 pin plug
Power to pump via
3 pin socket
For greater distances between your
rainwater tank and pump, a 10m float
switch (top and side entry) extension
lead (Davey Part No. 14186) will need to
be added. Up to 4 float switch extension
leads can be added between the pump
and the rainwater float switch lead. It
is recommended that the float switch
extension lead/s are in a protective cinduit.
E
D
E
E
A
100
A
Step 3a - TOP ENTRY FLOAT SWITCH
NOTE: THE VERTICAL POSITION OF
THE FLOAT SWITCH IN RELATION TO
THE PUMP WATER INLET IS CRITCAL
1. Measure the distance from the top of
the tank (A) to the highest point of the
tank outlet to the pump (B).
2. Mark on the float switch cable a length
equal to A-B minus 200 millimeters or
distance (B) to (D).
3. Drill a hole in the top of the tank large
enough to suit a cable grommet or
strain relief grommet (F) - not supplied.
4.Snap off retainer clip (C) from top of
weight (D).
5.Position retainer clip 100mm from
float ball (E).
6.Slide weight (E) over retaining clip and
firmly snap into position.
7.Lower weight into tank and feed top of
cable through hole drilled in Step 3.
8. Fasten with cable grommet to
previously measured length (A) to (B).
F
C
100
D
A
100
100
D
100
E
100
B
D
100
E
100
B
D
E
B
Step 3b - ALTERNATE SIDE ENTRY
FLOAT SWITCH 32398
Top
Bottom
Level switch stem
Compression nut
Bayonnet join
Sealing grommet
Sealing nut
IMPORTANT
!
•The level switch is suitable for
installation in polyethylene and
fibreglass tanks. It can be fitted in
steel tanks but cutting through the
zinc alum or colourbond coating of
the tank exposes bare steel and this
can rust. Check with the tank
manufacturer before drilling.
•The float switch is designed to be
installed from the outside of the tank.
There is no need to get inside the tank.
•The sealing grommet of the float
switch is designed to work in a
5 volt conne ction
for float switch
20
100
100
B
100
100
A
A
E
17
D
E
B
maximum tank wall thickness of
25mm. It is not suitable for concrete
or very thick plastic walled tanks.
There is an alternative float switch
that can be lowered into the top of
these types of tanks (Davey Part
Number 13961).
does not interfere with the operation
of the switch.
Work out the correct position for
the hole for the float switch. With a corrugated profile tank wall this is on the upper flat section of the profile as shown below.
1. Drill a 22mm hole in the side of the
tank in the correct position. A spade
drill is the best tool for this job.
Ensure all swarf is removed from the
hole. If installing the switch in a
corrugated tank you should make sure
that it is installed on the flat section
between the radii as shown below.
Note: Ensure level sensor is installed
with ‘UP’ facing up
Before cutting the hole check again
that the 5m lead from the float switch
will reach the RainBank® and plug
comfortably into it.
Centre hole on flat section of profile
Diameter of hole must be 22mm.
Work out the correct location of the float
switch relative to the pump outlet.
0
15
Drill Hole
ø 22mm
40
3.The switch will not work properly if it
is not properly orientated. Make
sure the word “UP” is seen at the very
end of the switch body. Now tighten
the compression nut to expand the seal (as shown below).
Step 4 - check pipe work
Make sure the final assembled position
‘UP’
of your RainBank® will align well with the
mains and rainwater pipe.
The pump and RainBank® should be
assembled so that the mains water
Bellow deforms Tighten Compression Nut supply to the unit and rainwater outlet to
inside tank
toilets and laundry connect easily to the
plumbing on the same level.
4.Ensure that the switch is still correctly
orientated. With the word “UP”
Step 5 - connect pump to
visible, screw on and tighten the
rainbank®
sealing nut to finish the installation of Connect your pump to the RainBank®
the float switch.
1.Screw rotary coupling into outlet of
pump (teflon tape not required).
Step 6 - connect pipes
Connect the RainBank® to the mains water
and delivery pipe plumbing.
Tighten Sealing Nut
To
Pump
0
10
Slab
The float switch location should also be:
•At least 40mm above the pump inlet.
•Placed away from the rainwater entry
into the tank so that the incoming flow
18
2.Ensure the compression nut is
loosened so that the sealing grommet
is not expanded. Remove the sealing
nut and insert the switch into the hole
as below.
Insert Float
! IMPORTANT
•To allow easy connection it is strongly
recommended that you have flexible
copper pipes that allow some
movement so that they can line
up exactly with the mains water and
rainwater outlet. These pipes must be
3 ⁄4 inch in diameter.
19
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