Installation guide Billi KwikWash Series

Installation guide Billi KwikWash Series
Installation guide
Billi KwikWash Series
—Installation Checklist
Please read through this section before
commencing installation, to ensure you
are familiar with the component parts
and the fitting procedure.
If you are installing the unit with a sensor tap,
please refer to the sensor tap install guide.
—This unit must be installed by:
A Licensed Electrician, ensuring installation
conforms to all current electrical wiring
A Licensed Plumber, ensuring installation
conforms to all current plumbing standards.
The Kwikwash I Series must be installed
in a vertical position on an internal wall,
or in an internal cupboard or space.
If the safety rules or the instructions outlined
in this manual are not followed correctly,
the unit may not operate properly and could
cause damage to property, serious bodily
injury and/or death.
Billi nor it’s service agents will be liable for
any damages due to failure to comply with
the installation and operating instructions
outlined in this manual or through
improper use.
Improper use includes the use of this
appliance to heat any liquid other than
potable water within the conductivity
range specified in this manual.
—Component Guide
This is an at-a-view guide to the
KwikWash I Series .
This diagram will allow you to become familiar
with the component parts of the unit and will
assist you during the installation process.
—IP Rating
The unit is rated as IP44. The appliance must
be installed inside a dwelling or construction
and should not be exposed to splashing water,
rain or any circumstance that will allow water
to enter the outside cover.
—Ambient Temperature
The unit is intended for internal installation and
should not be installed in an environment where
there is a possibility of the ambient temperature
dropping below 5°C.
IMPORTANT: Failure to comply with the
installation and operating instructions or
improper use voids the warranty.
Never remove the unit cover unless the
electricity is turned off at the isolation
switch or switchboard.
To reduce the risk of electric shock or injury
to persons or property, please follow the
installation instructions carefully.
IMPORTANT: Where the ambient temperatures
are likely to approach freezing – ie: less than
5°C – the unit must be drained of water to
prevent frozen water damage occurring.
Failure to comply with the installation and
operating instructions or improper use
voids the warranty.
—Step 1
Exterior Cover Removal
Find a clean flat surface and place the unit
on its back.
Using both your thumbs and forefingers, grip
the Exterior Cover (10) firmly along the bottom
of the unit, and push the cover slowly up to
separate it from the Body of the unit.
IMPORTANT: Do not pull cover away
completely just yet.
—Step 2
Remove the Display PCB
When the Exterior Cover is about 45° from
the Body, reach into the unit and disconnect the
LED Indicator/Display PCB Plug and Cable (19)
from the socket on the PCBA.
You can now lift off and separate the Exterior
Cover completely from the Body.
To replace the Exterior Cover, do the same
steps in reverse and then using a Phillips head
screwdriver, affix the Pan Phillips Head Self
Tapping Screws x 2 (11) (provided separately
in the small satchel) to secure the exterior
cover to the chassis. It is a safety requirement
to ensure the unit cannot be easily opened.
Mounting Screw
Hole Locations
IMPORTANT: When mounting the unit to a wall,
it is very important that no holes are drilled
within the shaded area shown to the right.
The Cable Gland Fitting hole (15) must not
be opened out.
Holes drilled within this area, or opening
out the Cable Gland Fitting hole, will make
the unit inoperable and irreparable. It will
also void the warranty.
—Step 3
Mounting to the Wall
The unit must be mounted onto a solid internal
wall, or in an internal cupboard or space, in the
vertical position using the 4 x Mounting Screws
(12) placed within the Mounting Screw Hole
Locations as shown. The maximum screw
head diameter is 8mm. A screw head larger
than 8mm will damage the mounting boss
and crack the body. THIS WILL VOID THE
The mounting method used to fix the unit to a
vertical wall must be capable of continuously
supporting a minimum weight of 10kg.
When mounting the unit onto a rough surface
(ie: a brick wall or similar), a backing board
should be mounted to the wall first. The unit
can then be mounted onto the backing board.
This will allow the Exterior Cover (10) to be
properly fitted to the unit.
WARNING: Body must NOT
be drilled, note: “NO DRILL”
symbols located on Flange
Cable Gland
—Step 4
Connection to Plumbing
The installation must comply with the relevant
Australian Standards and Industry Codes:
Plumbing and drainage – Heated water
services AS/NZS 3500.4
The Inlet (6) and Outlet (7) water connections
are both ½” BSP SERIES GB.
Mount the appliance in a vertical position
on an internal wall, or in an internal cupboard
or space first – then connect the hot and cold
water to the appropriate connections:
Inlet (6) Cold Water – BLUE
The cold water supply pipe must be flushed
before connecting the cold water supply to the
inlet (6). Ensure the Inlet Filter (13) is installed
as shown.
Outlet (7) Hot Water – RED
Effective operation of the unit requires the hot
water outlet to be connected to the hot water
ater Inlet Pressure Limiting Valve
and Shutoff Valve Connection
The unit is a closed outlet water heater and is
intended to operate at the pressure of the water
mains, where the flow of water is controlled by
one or more faucets/valves in the outlet line.
The unit can be installed into any type of
commercial or residential construction as
per the current Plumbing Standards.
However, it is mandatory for a water pressure
limiting valve and a shutoff valve to be
connected in series with the unit’s cold
water inlet connection (6).
– The unit is designed to operate at 10 MPa/10
bar/150 PSI.
– The installation of a pressure limiting valve
– a mandatory requirement – ensures that
excess water pressure applied, as result of
water hammer and/or other circumstances,
does not stress the appliance unduly.
– The inline water pressure limiting valve
must be rated at 5.0 bar/72.5 psi/500 kpa.
– The shutoff valve installed must not be a
non-return type valve.
IMPORTANT: Billi will not be liable for any
damages through failure to comply with the
installation and operating instructions outlined
in this manual – specifically in this instance
where the specified water pressure limiting
valve and shutoff valve type, as indicated,
must be installed with this unit.
Hot water
outlet (red)
Cold water
inlet (blue)
Inlet filter
Kwikwash Series
Hot Water OUT
5 bar/500kpa
Cold Water IN
—Acceptable inlet/outlet connections
The Inlet (6) and Outlet (7) water connections
are both ½” BSP SERIES GB.
—Step 5
Connection to Power
The unit must be connected to Live-Neutral/
Ground (LNG) Electrical Mains Supply.
The appliance must be connected to the mains
supply with fixed wiring. The appropriate mains
isolation switch must be incorporated in-line
with the fixed wiring electrical supply.
IMPORTANT: This unit is classified as
a Class I Bare Element Water Heater.
The appliance must be correctly connected
to the mains earth.
In order to prevent a hazardous circumstance
occurring due to the inadvertent resetting of
the thermal cut out, the electrical supply to
this appliance must not be supplied through
an external switching device, such as a timer
– nor can it be connected to a circuit that
is regularly switched on and off by the
electricity supply utility.
Bring the Live, Neutral supply through
the Electric Mains Supply Cable Gland
(15) as shown.
The LIVE wire must be connected
to the terminal L
The NEUTRAL wire must be connected
to the terminal N
be connected to the terminal
IMPORTANT: Live-Neutral/Ground (LNG)
connection is polarity dependent.
Incorrect wiring connection will cause
FC – Earth Leakage Detection Error.
40A Isolation
In accordance with the wiring rules,
AS/NZS 3000:2007 and IEC 61000-3-11,
the Kwikwash I Series is intended for use
in premises having a service current capacity
≥100 A per phase, supplied from a distribution
network having a nominal voltage of
400/230 VAC. The Live-Neutral electrical
supply connections Live, Neutral and Ground
(Earth ) must be permanently connected
to the Terminal Block (14) mounted on the
PCBA V6.2 as shown – noting the correct
polarity Live – L and Neutral – N.
40A Circuit
Kwikwash I Series
—Step 6
Preparation for Use
After installation, this two step procedure
must be followed.
The unit must be primed – this is required
only once – nominally at installation.
(Priming is only required when the
electricity supply to the unit has been turned
off/removed from the unit – for example,
after a power failure or an isolation
switch OFF condition).
Priming is required to set the unit up
environmentally to ensure that the heating
ramp-up time from start during normal
operation will be as short as possible,
without incurring power overshoot.
Once primed, the unit will ramp-up to
the optimised power required at the time
without overshoot.
The unit is designed to provide long and
reliable service. Actual life expectancy will
vary with water quality and use. The unit itself
does not require any regular maintenance.
The Kwikwash I Series has a projected
Mean Time Between Failure (MTBF) of 925
hours/17,500 cycles.
However, to ensure consistent water flow,
it is recommended to periodically remove scale
and dirt that may build up in the Inlet Filter (13),
the faucet or in the shower head.
NOTE: Power overshoot typically results from
the maximum power input required to get a
heat exchanger up to working temperature as
quickly as possible. However, as the unit does
not incorporate a heat exchanger, this initial
power ‘kick’ is not required at start up.
– Flushing is required to clear the unit of
plumbing debris that may have collected
in the piping during installation. Remove the
Inlet Filter (13) whilst doing this and replace
after flushing.
– This is done with the electric power supply
turned off.
– Flushing should be allowed to continue
for 1 to 2 minutes.
– Turn the electricity supply on – check for
the LED (16) slow flashing GREEN. The unit
is now in stand-by mode.
– Turn on the hot water faucet to a flow rate
greater than 1.5ltr/min (the unit will start
heating – check for LED (16) fast flashing
GREEN), and allow the unit to run for
about 3 minutes.
The unit is now primed and ready for use.
IMPORTANT: If the power is cycled,
the unit will need to run for around
3 minutes before it will heat.
IMPORTANT: Other than the Inlet Filter (13),
the unit does not contain any user-serviceable
parts. In case of malfunction, a trained
service agent, licensed plumber or
electrician is required.
Billi Pty Ltd
42 Lucknow Crescent, Thomastown
Victoria 3074 Australia
Telephone +61 3 9469 0400
Facsimile +61 3 9469 0499
Designed and manufactured in Australia.
As Billi Pty Ltd has a policy of continual
improvement, all details are subject
to change without notice. All goods
are sold subject to our published terms
and conditions. Billi is a registered
trademark. 0614
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