Solahart Streamline Electric User manual

This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder.
Streamline
Indirect Closed Circuit
Electric Boosted
SOLAR WATER HEATER
OWNER’S MANUAL
AND
WARRANTY / INSTALLATION INFORMATION
WARNING: Plumber –Be Aware
Use copper pipe ONLY. Plastic pipe MUST NOT be used.
It is a requirement of a solar water heater installation that all pipe work be in
copper and not plastic, due to the effects of high water temperatures.
Solahart Industries Pty Ltd
ABN 45 064 945 848

PATENTS
This water heater may be protected by one or more patents or registered designs in the name of
Solahart Industries Pty Ltd or Rheem Australia Pty Ltd.
TRADE MARKS
®Registered trademark of Solahart Industries Pty Ltd or Rheem Australia Pty Ltd.
™ Trademark of Solahart Industries Pty Ltd or Rheem Australia Pty Ltd.
Note: Every care has been taken to ensure accuracy in preparation of this publication.
No liability can be accepted for any consequences, which may arise as a result of its application.
WARNING: Plumber –Be Aware
The solar hot and solar cold pipes between the solar storage tank and the solar collectors MUST BE
of copper. All compression fittings must use brass or copper olives.
The full length of the solar hot and solar cold pipes MUST BE insulated.
The insulation must:
be of a closed cell type or equivalent, suitable for a solar water heating application and capable of
withstanding the temperature of the closed circuit fluid generated by the solar collectors under
stagnation conditions
The specification of the chosen insulation material should be checked with the insulation
manufacturer prior to installation as different materials may vary in temperature tolerance.
be at least 13 mm thick, however thicker insulation may be required to comply with the
requirements of AS/NZS 3500.4
be weatherproof and UV resistant if exposed
extend through any penetrations in the eaves, ceiling and roof
cover valves and fittings in the solar hot and solar cold pipe work
be fitted up to and cover the connections on both the solar storage tank and the solar collectors.
The insulation will offer corrosion protection to a metal roof against water runoff over the copper pipe,
assist in avoiding accidental contact with the solar pipe work as high temperature closed circuit fluid
can flow from the solar collectors to the solar storage tank, and also reduce pipe heat losses.
The highest point of the solar cold pipe and solar hot pipe must be where they connect to the solar
collector. There MUST BE a continuous fall of a minimum 5° (1 in 10 grade) in the pipe work from
the solar collector to the solar storage tank for efficient and effective drain back to occur.
The system has NO WARRANTY for freeze damage if there is not a continuous fall in the solar hot
and solar cold pipes, or they are not insulated in accordance with the installation instructions, or the
closed circuit fluid has been incorrectly mixed.
The insulated copper pipe work:
should be fixed at suitable locations to prevent or reduce the possibility of noise from water
hammer and vibration from occurring
is not to be placed or installed in contact with plastic pipe work.
Likewise, plastic pipe work is not to be placed or installed in contact with the insulated copper
pipe work after the solar circuit is installed.
Plastic pipe MUST NOT be used, as it will not withstand the temperature of the closed circuit fluid
generated by the solar collectors under stagnation conditions. The solar collectors can generate
extremely high closed circuit fluid temperatures of up to 150°C. Plastic pipe cannot withstand these
temperatures and MUST NOT be used. Failure of plastic pipe can lead to the release of high
temperature closed circuit fluid and cause severe water damage and flooding.
The pressure applied to the solar circuit and solar collectors during a pressure test of an indirect
closed circuit system MUST NOT exceed 200 kPa, otherwise damage may result to the solar
collectors. Refer to “Pressure Testing” on page 31.

3
CONTENTS
HOUSEHOLDER –We recommend you read pages 4 to 17.
The other pages are intended for the installer but may be of interest.
About Your Water Heater............................................................................................................ 4
Regular Care .............................................................................................................................. 10
Water Supplies........................................................................................................................... 12
Save A Service Call................................................................................................................... 15
Installation –Solar Storage Tank............................................................................................. 18
Installation –Solar Collectors.................................................................................................. 27
Connections –Plumbing .......................................................................................................... 32
Connections –Electrical........................................................................................................... 35
Auxiliary Pump .......................................................................................................................... 40
Commissioning.......................................................................................................................... 43
Draining The Water Heater ....................................................................................................... 56
Warranty..................................................................................................................................... 57
Solahart Offices......................................................................................................................... 60

4
ABOUT YOUR WATER HEATER
WATER HEATER APPLICATION
This water heater is designed for use in a single family domestic dwelling for the purpose of heating potable
water. Its use in an application other than this may shorten its life.
MODEL TYPE
Your Solahart®Streamline indirect closed circuit solar water heater is designed for the solar collectors to be
roof mounted and the solar storage tank to be installed at ground or floor level. The electric boosted solar
storage tank is suitable for installation either outdoor or indoor and with either Solahart J, KF, LCS, TBT200
or BT solar collectors. The system is suitable for installation in areas subject to frost or freeze conditions.
Freeze conditions occur below 6°C.
MAINS PRESSURE
The water heater is designed to operate at mains pressure by connecting directly to the mains water supply.
If the mains supply pressure in your area exceeds that shown on page 20, a pressure limiting valve must be
fitted. The supply pressure should be greater than 350 kPa for true mains pressure operation to be achieved.
SOLAR OPERATION
The Solahart Streamline indirect closed circuit solar water heater has its vitreous enamel lined solar storage
tank installed at ground or floor level, remotely from the solar collectors. This water heater is an indirect solar
hot water system with a heat exchanger in the solar storage tank.
The heat exchanger is filled with closed circuit fluid and is connected to
the solar collectors forming a closed circuit. The closed circuit fluid is a
solution of a blue, non-toxic food grade propylene glycol concentrate
mixed with water. The closed circuit concentrate is used to lower the
freezing temperature of the closed circuit fluid and provides protection
against freezing.
As the sun heats the solar collectors, the increase in temperature
activates the pump. The pump switches on whenever the solar
collectors are hotter than the water in the tank. The pump moves the
closed circuit fluid from the solar storage tank heat exchanger through
an insulated copper pipe to the solar collectors to be heated by the
sun‟s energy and then back to the heat exchanger. Heat transfers from
the closed circuit fluid in the heat exchanger to the water stored in the
solar storage tank.
This process continues while solar energy is available and until the
water in the solar storage tank reaches a temperature of approximately
75°C. The pump is then deactivated and the closed circuit fluid in the
solar collectors and solar pipe work drains back into the heat
exchanger in the solar storage tank.
The closed circuit provides protection to the solar collectors and solar circuit in harsh water areas. The drain
back principle provides protection to the system in freezing conditions.
Automatic safety controls are fitted to the water heater to provide safe and efficient operation.
ELECTRIC BOOSTING
Water stored in the solar storage tank can be heated by an electric booster heating unit. The booster heating
unit is for heating the water at times of low solar energy gain, such as during very cloudy or rainy weather, or
during the colder months. The Streamline indirect closed circuit water heater is suitable for the heating unit to
be connected to either a continuous, or a time of use, or an extended Off-Peak (overnight and day) electricity
supply.
The booster heating unit is controlled by an electric thermostat. The thermostat and its over temperature
energy cut out are mounted on the solar storage tank behind the upper front cover. The water temperature is
automatically controlled to the thermostat setting when the booster heating unit is energised.

ABOUT YOUR WATER HEATER
5
HOW HOT SHOULD THE WATER BE?
The solar control unit will circulate the closed circuit fluid through the
solar collectors until a temperature of approximately 75°C is
reached in the solar storage tank.
During periods of low solar energy gain, the water temperature can
be boosted by the thermostatically controlled electric booster
heating unit. Refer to “Booster Control” on page 7.
Solahart recommends the thermostat is set at 60°C to maximise
solar contribution.
Note: AS 3498 requires that a water heater provides the means to
inhibit the growth of Legionella bacteria in potable water. This water
heater can satisfy this AS 3498 requirement provided the electric
booster is energised for a sufficient period each day and the electric
booster thermostat setting is 60°C or higher.
HOTTER WATER INCREASES THE RISK OF SCALD INJURY
This water heater can deliver water at temperatures which can
cause scalding. Check the water temperature before use, such as
when entering a shower or filling a bath or basin, to ensure it is
suitable for the application and will not cause scald injury.
We recommend and it may also be required by regulations that an approved temperature limiting device be
fitted into the hot water pipe work to the bathroom and ensuite when this water heater is installed. This will
keep the water temperature below 50°C at the bathroom and ensuite. The risk of scald injury will be reduced
and still allow hotter water to the kitchen and laundry.
TEMPERATURE ADJUSTMENT
The water heater features a tradesperson adjustable thermostat. This requires a licensed tradesperson to
make any temperature adjustments. The thermostat has a maximum temperature setting of 70°C and a
minimum temperature setting of 60°C.
We advise you have your electrician adjust the thermostat to the lowest setting which meets your needs,
especially if there are young children or elderly people in the home. Refer to “Hotter Water Increases the
Risk of Scald Injury” on page 5.
WARNING
This water heater is only intended to be operated by persons who have the experience or the knowledge and
the capabilities to do so. This water heater is not intended to be operated by persons with reduced physical,
sensory or mental capabilities i.e. the infirm, or by children. Children should be supervised to ensure they do
not interfere with the water heater.
This water heater uses 240 V AC electrical power for operation of the control systems and the electrically
operated components. The removal of the front covers will expose 240 V wiring. They must only be removed
by a qualified person.
Care should be taken not to touch the pipe work connecting the solar storage tank and the solar collectors.
Very high temperature closed circuit fluid can be generated by the solar collectors under certain conditions
and flow through the pipe work from the solar collectors to the solar storage tank.
Should the water from the water heater appear blue or if blue closed circuit fluid is noticed around the base
of the water heater, this indicates a leak of the closed circuit fluid from the heat exchanger. The closed circuit
fluid is non-toxic and not hazardous to health. Phone your nearest Solahart Dealer to arrange for an
inspection.
typical maximum
temperature from solar
gain
maximum recommended
supply temperature to
bathrooms and ensuites
minimum booster setting
maximum booster setting

ABOUT YOUR WATER HEATER
6
SAFETY
This water heater is supplied with a thermostat, an over-temperature energy cut-out, temperature sensors, a
pressure relief valve and a combination temperature pressure relief valve. These devices must not be
tampered with or removed. The water heater must not be operated unless each of these devices is fitted and
is in working order.
The operation of the over-temperature cut-out on the thermostat indicates a possibly dangerous situation. If
the over-temperature cut-out operates, it must not be reset and the water heater must be serviced by a
qualified person.
If the electrical conduit to the solar storage tank is damaged, it must be replaced by a qualified person in
order to avoid a hazard. Phone your nearest Solahart Dealer to arrange for an inspection.
Warning: For continued safety of this water heater it must be installed, operated and maintained in
accordance with the Owner‟s Guide and Installation Instructions.
The Solahart warranty may not cover faults if relief valves or other safety devices are tampered with
or if the installation is not in accordance with these instructions.
PRECAUTIONS
Where damage to property can occur in the event of the water heater leaking, the water heater must be
installed in a safe tray. Construction, installation and draining of a safe tray must comply with AS/NZS 3500.4
and all local codes and regulatory authority requirements.
The water heater must be maintained in accordance with the Owner‟s Guide and Installation Instructions.
Refer to “Regular Care” on page 10 and to “Anode Inspection and Replacement” on page 13.
If this water heater is to be used where an uninterrupted hot water supply is necessary for your application or
business you should ensure that you have back up redundancy within the hot water system design. This
should ensure the continuity of hot water supply in the event that this water heater were to become
inoperable for any reason. We recommend you seek advice from your plumber or specifier about your needs
and building back up redundancy into your hot water supply system.
SOLAR MONITOR
The solar storage tank incorporates a solar monitor. The solar monitor is located on the lower front cover and
houses both a green and a red LED.
The green LED, marked “Solar”, indicates the current operational mode of the solar water heater and the red
LED, marked “Attention”, indicates a fault mode.
The green LED will emit either a constant glow or a series of flashes, with a 2 second interval between each
series.
The red LED will emit a series of flashes, with a 2 second interval between each series, only if there is a
particular fault condition with the system.
The operational modes are:
Flashes
Operational Modes
solid green
(remains on)
Standby mode
2 x green
Flooding solar circuit
3 x green
Pump flow control
4 x green
Pump flow established
5 x green
Tank at maximum temperature
no green
(remains off)
Call for service
If the power supply to the water heater is on and the green LED is off or the red LED is flashing, this
indicates there is a fault with the water heater. The red LED may emit up to six flashes in each series of
flashes. Count the number of flashes and phone your nearest Solahart Dealer to arrange for an inspection.

ABOUT YOUR WATER HEATER
7
BOOSTER CONTROL
An isolating switch is installed in the electrical meter box for the solar storage tank. This should be left
switched on to allow the booster heating unit to operate if required. The booster heating unit is for heating
the water at times of low solar energy gain, such as during very cloudy or rainy weather, or during the colder
months.
The booster heating unit will only activate if heating is required and power is available from the switchboard.
When the water is below the thermostat setting, the booster heating unit will turn on and heat the water. The
booster heating unit will automatically turn off when the temperature of the water reaches the thermostat
setting.
Leaving the isolating switch switched on will also provide a sufficient period of time each day for the booster
heating unit to operate, if required, to satisfy the requirements of AS 3498.
The amount of water heated by the raised booster heating unit of your Streamline indirect closed circuit
storage tank will be 125 litres (270 model).
Timer Control Switch
A suitably rated timer control switch can be installed and will help maximise energy savings with an
electrically boosted solar water heater connected to a continuous, time of use or extended Off-Peak
(overnight and day) electricity supply.
Programming the Timer
Power must be available to the timer control switch before the booster heating unit can be activated.
The timer should be programmed:
to suit the hot water consumption pattern of the household,
with the end of the boost periods to coincide with the commencement of the morning and evening hot
water usage,
to enable each boosting period to be not less than the recommended continuous length of time for
boosting,
for a period when power will be available for the booster heating unit to operate.
Note: When daylight saving time applies, you may consider resetting the timer accordingly.
The recommended continuous length of time for boosting is:
Booster heating unit size
Model
Minimum winter
cold water temperature
Temperature
rise
2.4 kW
3.6 kW
4.8 kW
270
Cool / temperate climate
10°C
50°C
3 ¼ hours
2 ¼ hours
1 ¾ hours
Temperate / sub tropical climate
15°C
45°C
2 ¾ hours
2 hours
1 ½ hours
Tropical climate
20°C
40°C
2 ½ hours
1 ¾ hours
1 ¼ hours
The recommended boosting periods are sufficient to allow the booster heating unit to heat up the boost
volume of the solar storage tank to 60°C where the winter cold water temperatures do not fall below those
shown. This may be necessary during periods of very low solar energy gain through the solar collectors,
such as during constant rain or extremely cloudy weather, particularly in winter when the incoming cold water
temperature is lower. The period will also provide a sufficient heat up time for the electric booster to operate,
if required, to satisfy the requirements of AS 3498.
The booster heating unit will only activate if heating is required and power is available from the timer. When
the water is below the thermostat setting, the booster heating unit will turn on and heat the water. The
booster heating unit will automatically turn off either when the temperature of the water reaches the
thermostat setting or at the end of the timer period, whichever comes first.

ABOUT YOUR WATER HEATER
8
PIPE WORK AND INSULATION
The solar hot and solar cold pipes between the solar storage tank and the solar collectors MUST BE of
copper.
The full length of the solar hot and solar cold pipes MUST BE insulated. The insulation must:
be of a closed cell type or equivalent, suitable for a solar water heating application and capable of
withstanding the temperatures of the fluid generated by the solar collectors under stagnation conditions
be at least 13 mm thick, however thicker insulation may be required to comply with the requirements of
AS/NZS 3500.4
be weatherproof and UV resistant if exposed
extend through any penetrations in the eaves, ceiling and roof
cover valves and fittings in the solar hot and solar cold pipe work
be fitted up to and cover the connections on both the solar storage tank and the solar collectors.
The insulation will offer corrosion protection to a metal roof against water runoff over the copper pipe, assist
in avoiding accidental contact with the solar pipe work as high temperature closed circuit fluid can flow from
the solar collectors to the solar storage tank and also reduce pipe heat losses.
There must be a continuous fall in the pipe work from the solar collector to the solar storage tank. The
continuous fall is essential to assist in the drain back function of the solar system.
Plastic pipe MUST NOT be used, as it will not withstand the temperature of the closed circuit fluid generated
by the solar collector under certain conditions (refer to Warning on page 29).
FREEZE PROTECTION
The solar circuit must be installed with a continuous fall of a minimum 5° (1 in 10 grade) in the pipe work
from the solar collector to the solar storage tank, with the full length of the solar hot and solar cold pipes
insulated and the system charged with correctly mixed closed circuit fluid to offer protection against freeze
damage. The system has NO WARRANTY for freeze damage if there is not a continuous fall in the solar hot
and solar cold pipes, or they are not insulated in accordance with the installation instructions, or the closed
circuit fluid has been incorrectly mixed (refer to “Terms of the Solahart Warranty” on page 57 and to “Pipe
Work and Insulation” on page 8).
The anti freeze control of the solar circuit is designed so there is no closed circuit fluid in the solar collector or
solar cold and solar hot pipes when the pump is off.
Notes:
Pipe work to and from the water heater must be adequately insulated to prevent freezing.
The water heater is not suitable for installation in areas where the ambient temperature falls below
-20°C.
Refer to “Terms of the Solahart Warranty” on page 57.
RAIN WATER TANK
If the solar collectors and solar pipe work are installed on a section of roof which is part of a rain water runoff
collection system, then it is recommended this section of roof and its gutter be isolated from the rain water
collection system. The gutter should be isolated to a width greater than the solar collectors and pipe work
and must have suitable drainage. This is to ensure in the event of a leak from the solar collectors or pipe
work, a rainwater tank cannot be contaminated with closed circuit fluid.
The closed circuit fluid contains food grade additives (rust inhibitor and anti-freeze agent), is non-toxic and is
harmless to the environment. However, if it enters a rain water tank, it can kill off microscopic algae which
are typically present in the water causing an unpleasant odour to develop and resulting in the rain water tank
having to be drained and cleaned.

ABOUT YOUR WATER HEATER
9
TO TURN OFF THE WATER HEATER
If you plan to be away from home for a few nights, we suggest you leave the water heater switched on.
If it is necessary to turn off the water heater:
Switch off the electrical supply at the isolating switch to the solar storage tank.
Close the cold water isolation valve at the inlet to the water heater.
TO TURN ON THE WATER HEATER
Open the cold water isolation valve fully at the inlet to the water heater.
Open all of the hot water taps in the house (don‟t forget the shower).
Air will be forced out of the taps.
Close each tap as water flows freely from it.
Switch on the electrical supply at the isolating switch to the solar storage tank.
The electrical supply must be switched on for the solar controls to operate and solar gain to be
achieved.
Check and if required reset the timer, if one is installed.
GOING ON HOLIDAYS
It is not necessary to switch off the electrical supply at the isolating switch to the water heater if you are going
away. However, if it is necessary to switch off the power to the water heater, refer to “To Turn Off The Water
Heater” on page 9.
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?
Installation requirements are shown on pages 18 to 26. The water heater must be installed:
by a qualified person, and
in accordance with the installation instructions, and
in compliance with Standards AS/NZS 3500.4, AS/NZS 3000 and all local codes and regulatory authority
requirements.
In New Zealand, the installation must also conform with Clause G12 of the New Zealand Building Code.
Refer also to “Pipe Work and Insulation” on page 8, and to “Rain Water Tank” on page 8.
VICTORIAN CUSTOMERS
Notice to Victorian Customers from the Victorian Plumbing Industry Commission. This water heater must be
installed by a licensed person as required by the Victorian Building Act 1993.
Only a licensed person will give you a Compliance Certificate, showing that the work complies with all the
relevant Standards. Only a licensed person will have insurance protecting their workmanship for 6 years.
Make sure you use a licensed person to install this water heater and ask for your Compliance Certificate.
DOES THE WATER CHEMISTRY AFFECT THE WATER HEATER?
The water heater is suitable for most public water supplies, however some water chemistries may have
detrimental effects on the water heater, components and fittings. Refer to “Water Supplies” on page 12.
If you are in a known harsh water area or you are not sure of your water chemistry, have your water checked
against the conditions described on pages 12 to 14.
HOW LONG WILL THE WATER HEATER LAST?
The water heater is supported by a manufacturer‟s warranty (refer to page 57). There are a number of
factors that will affect the length of service the water heater will provide. These include but are not limited to
the water chemistry, the water pressure, the water temperature (inlet and outlet) and the water usage
pattern. Refer to “Precautions” on page 6.

10
REGULAR CARE
MINOR SIX MONTH MAINTENANCE
It is recommended minor maintenance be performed every six months by the dwelling occupant.
The minor maintenance includes:
Operate the easing lever on the temperature pressure relief valve. It is very important you raise and
lower the lever gently. Refer to “Temperature Pressure Relief Valve” on page 11.
Warning: Exercise care to avoid any splashing of water, as water discharged from the drain line will
be hot. Stand clear of the drain line‟s point of discharge when operating the valve‟s lever.
Operate the easing lever on the expansion control valve (if fitted). It is very important you raise and
lower the lever gently. Refer to “Expansion Control Valve” on page 11.
Check the drain line from the safe tray (if one is installed) is not blocked.
MAJOR FIVE YEAR SERVICE
It is recommended a major five year service be conducted on the water heater.
Warning: Servicing of a water heater must only be carried out by a qualified person. Phone your nearest
Solahart Dealer.
Note: The five year service and routine replacement of any components, such as the anodes and relief
valves, are not included in the Solahart warranty. A charge will be made for this work. Only genuine
replacement parts should be used on this water heater.
The major service includes the following actions:
Replace the temperature pressure relief valve.
Inspect and flush the expansion control valve (if fitted). If required, replace the valve.
Inspect and if required, replace the anodes.
If an anode is not replaced, it should be replaced within three years of this service (refer to “Anode
Inspection and Replacement” on page 13).
Check the electric heating unit for excessive calcium build up or corrosion and replace if necessary.
Check the system for correct operation.
Check the closed circuit fluid level.
Clean the collector glass.
Visually check the unit for any potential problems.
Inspect all connections.
Check the drain line from the safe tray (if one is installed) is not blocked.
Note: The solar storage tank may need to be drained during this service. After the completion of the service,
the solar storage tank will take some time to reheat the water by solar gain. Depending upon the power
supply connection to the booster heating unit, hot water may not be available until the next day.

REGULAR CARE
11
TEMPERATURE PRESSURE RELIEF VALVE
This valve is near the top of the water heater and is essential for its
safe operation. It is possible for the valve to release a little water
through the drain line during each heating period. This occurs as the
water is heated and expands by approximately 1/50 of its volume.
Continuous leakage of water from the valve and its drain line may
indicate a problem with the water heater (refer to “Temperature
Pressure Relief Valve Running” on page 16).
Warning: Never block the outlet of this valve or its drain line for
any reason.
Operate the easing lever on the temperature pressure relief valve
once every six months. It is very important you raise and lower
the lever gently.
DANGER: Failure to do this may result in the water heater
cylinder failing, or under certain circumstances, exploding.
Warning: Exercise care to avoid any splashing of water, as
water discharged from the drain line will be hot. Stand clear of the
drain line‟s point of discharge when operating the valve‟s lever.
If water does not flow freely from the drain line when the lever is
lifted, then the water heater must be checked. Phone your nearest
Solahart Dealer to arrange for an inspection.
The temperature pressure relief valve should be replaced at
intervals not exceeding 5 years, or more frequently in areas where
there is a high incidence of water deposits (refer to “Water Supplies”
on page 12).
EXPANSION CONTROL VALVE
In many areas, including South Australia, Western Australia and scaling water areas, an expansion control
valve is fitted to the cold water line to the water heater. The expansion control valve may discharge a small
quantity of water from its drain line during the heating period instead of the temperature pressure relief valve
on the water heater.
Operate the easing lever on the expansion control valve once every six months. It is very important you
raise and lower the lever gently. The expansion control valve should be checked for performance or
replaced at intervals not exceeding 5 years, or more frequently in areas where there is a high incidence of
water deposits.
COLLECTOR GLASS
Ensure the glass on your solar collectors is free of dust, salt spray or any other matter, which may reduce the
effectiveness of the solar collectors. If the collector glass becomes dirty, hose down or if the solar collectors
are accessible, wash the collector glass with water and a soft brush when the solar collectors are cool.
Have any trees trimmed which may shade the solar collectors.
Solahart solar collectors have passed the AS/NZS 2712 requirements for resistance to hailstone damage, so
it is not normally necessary to fit a guard to a collector. Stone Guards are available to provide a level of
protection to the collectors against vandalism or accidental damage. Refer to your local Solar Distributor for
details.
GENERAL MAINTENANCE
On a regular basis, inspect around the water heater for insect infestations, such as ants. Insects may look for
a warm place to nest, particularly in wet weather. Insects encroaching into or nesting in the water heater can
interfere with the operation of the water heater and also damage components. Spray insecticide around the
water heater if necessary to rid the area of insects.
water
heater
drain
line
lift until water
flows from the
drain line –
lower gently

12
WATER SUPPLIES
This water heater must be installed in accordance with this advice to be covered by the Solahart
warranty.
This water heater is manufactured to suit the water conditions of most public reticulated water supplies.
However, there are some known water chemistries which can have detrimental effects on the water heater
and its operation and / or life expectancy. If you are unsure of your water chemistry, you may be able to
obtain information from your local water supply authority. This water heater should only be connected to a
water supply which complies with these guidelines for the Solahart warranty to apply.
CHANGE OF WATER SUPPLY
The changing or alternating from one water supply to another can have a detrimental effect on the operation
and / or life expectation of a water heater cylinder, a temperature pressure relief valve and a heating unit.
Where there is a changeover from one water supply to another, e.g. a rainwater tank supply, bore water
supply, desalinated water supply, public reticulated water supply or water brought in from another supply,
then water chemistry information should be sought from the supplier or it should be tested to ensure the
water supply meets the requirements given in these guidelines for the Solahart warranty to apply.
ANODE
The vitreous enamel lined cylinder of the water heater is only covered by the Solahart warranty when the
total dissolved solids (TDS) content in the water is less than 2500 mg/L and when the correct colour coded
anode is used. If an incorrect colour coded anode is used in the water heater, any resultant faults will not be
covered by the Solahart warranty. In addition, the use of an incorrect colour coded anode may shorten the
life of the water heater cylinder.
The correct colour coded anode must be selected and fitted to the water heater in accordance with the
following advice and the Anode Selection chart on page 12 for the Solahart warranty to apply to the water
heater cylinder.
Total Dissolved Solids
Anode colour code
0 –40 mg/L
Green
40 –150 mg/L
Green or Black
150 –400 mg/L
Black
400 –600 mg/L
Black or Blue
600 –2500 mg/L
Blue
2500 mg/L +
Blue (no cylinder warranty)
The changing of an anode must be carried out by a qualified person.
Note: Some water analysis reports may state the conductivity of the water rather than the level of total
dissolved solids. Conductivity, measured in microsiemens per centimetre (µS / cm), is directly proportional to
the TDS content of the water. TDS, in mg / L, is approximately 70% of the conductivity in µS / cm.
CONDUCTIVITY - µS/cm
TOTALDISSOLVED SOLIDS&CONDUCTIVITY
(vitreous enamel lined water heater cylinder)
40 150 400 600 TOTAL DISSOLVED SOLIDS(TDS) -mg/L
ANODE SELECTION
warranty applies to a vitreous enamel lined water heater cylinder if the
correct coloured anode is used for the TDS / conductivity level of water
2500
3570
no warranty
applies
to a vitreous
enamel lined
water heater
cylinder
Blue
Black
Green
60 215 570 860
0
0
Blue

WATER SUPPLIES
13
ANODE INSPECTION AND REPLACEMENT
The anodes installed in a vitreous enamel lined steel water heater cylinder will slowly dissipate whilst
protecting the cylinder. The life of the cylinder may be extended by replacing the anodes.
If the anodes are not replaced during a five year service (refer to “Major Five Year Service” on page 10) then
the maximum time after installation when the anodes should be replaced for this water heater is 8 years.
For water supplies which are either softened, desalinated or where the water supply may alternate between
a water tank and a reticulated public supply or another supply, it is recommended the anodes be replaced
within 5 years of installation.
CAUTION
If the water supply has a TDS greater than 150 mg/L and a green anode has not been changed to a black
anode, or if the TDS is greater than 600 mg/L and an anode has not been changed to a blue anode, there is
the possibility the anode may become overactive and hydrogen gas could accumulate in the top of the water
heater during long periods of no use.
If, under these conditions, the water heater has not been used for two or more weeks the following procedure
should be carried out before using any electrical appliances (automatic washing machines and dishwashers)
which are connected to the hot water supply.
The hydrogen, which is highly flammable, should be vented safely by opening a hot tap and allowing the
water to flow. There should be no smoking or naked flame near the tap whilst it is turned on. Any hydrogen
gas will be dissipated. This is indicated by an unusual spurting of the water from the tap. Once the water runs
freely, any hydrogen in the system will have been released.
SATURATION INDEX
The saturation index is used as a measure of the water‟s corrosive or scaling properties.
In a corrosive water supply, the water can attack copper parts and cause them to fail. Where the saturation
index is less than –1.0, the water is very corrosive and the Solahart warranty does not apply to a copper
sheathed heating unit. A corrosion resistant heating unit must be used for the Solahart warranty to apply to
the heating unit.
In a scaling water supply calcium carbonate is deposited out of the water onto any hot metallic surface.
Where the saturation index exceeds +0.40, the water is very scaling. An expansion control valve must be
fitted on the cold water line after the non-return valve to protect and for the Solahart warranty to apply to the
temperature pressure relief valve and water heater cylinder.
Where the saturation index exceeds +0.80, the Solahart warranty does not apply to a standard watts density
heating unit. A low watts density heating unit must be used for the Solahart warranty to apply to the heating
unit.
Water which is scaling may be treated with a water softening device to reduce the saturation index of the
water.
Refer to the Saturation Index chart on page 14.
Contact your nearest Solahart Dealer if a replacement heating unit is required.
Refer to the cold water connection detail on page 32 for the position of the expansion control valve.

WATER SUPPLIES
14
-1.0
no warranty applies to a:
temperature pressure relief valve or a
water heater cylinder unless an
expansion control valve is fitted.
no warranty applies to a:
-copper sheathed heating unit -direct (open circuit) solar collector
SATURATION INDEX (SI)
SOLAR WATER HEATERS - ELECTRIC BOOST
WITHIN WARRANTY
SPECIFICATION
SATURATION INDEX
(calculated @ 80°C water temperature)
no warranty applies to a:
-standard watts density heating unit -direct (open circuit) solar collector
+0.4 +0.80
very corrosive very scaling
scaling
corrosive
SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY
The water heater, solar collectors and their components are not suitable for certain water chemistries. Those
chemistries are listed below. If the water heater is connected at any time to a water supply with the following
water chemistry, the Solahart warranty will not cover any resultant faults on the components listed below:
Water Chemistry
Component
Total Dissolved Solids (TDS) > 2500 mg/L
water heater cylinder
Total Dissolved Solids (TDS) not suitable for anode type
water heater cylinder
Saturation Index (SI) < -1.0
copper sheathed heating unit
Saturation Index (SI) > +0.4
(if an expansion control valve is not fitted)
temperature pressure relief valve,
water heater cylinder
Saturation Index (SI) > +0.8
standard watts density heating unit

15
SAVE A SERVICE CALL
Check the items below before making a service call. You will be charged for attending to any condition or
fault that is not related to manufacture or failure of a part.
NOT ENOUGH HOT WATER (OR NO HOT WATER)
This can occur with new installations and is normally related to some misunderstandings as to the use of the
booster heating unit.
Booster heating unit not operating
Inspect the isolating switch marked “HOT WATER” or “WATER
HEATER” at the switchboard and ensure it is turned “ON”.
Check the timer (if one is installed) and it‟s settings to ensure
power is available to the booster heating unit.
Note: Check the electricity supply to which the unit is connected. If
on an Extended Off-Peak or time controlled supply, remember
heating hours are restricted.
Check the fuse marked “HOT WATER” or “WATER HEATER” at
the switchboard.
Solar Controller
Check the electrical supply to the solar control unit is switched on.
Is power available in the house? Try using another electrical appliance.
Green LED is off or red LED is flashing on Solar Monitor
If the green LED is off or the red LED is flashing on the Solar Monitor label, there may be a problem with
the solar water heater operation and solar gain is not being achieved. This will result in the booster
heating unit operating to provide all of the hot water required.
Switch off the electrical supply at the isolating switch to the solar water heater for a few seconds, then
switch on again.
If the green LED remains off or the red LED recommences to flash, then count the number of flashes
and phone your nearest Solahart Dealer to arrange for an inspection.
Insufficient sunlight
Insufficient sunlight due to cloudy weather during hotter months or low solar energy contribution in
colder months may mean the booster water heater operates more often.
Collectors shaded
If trees or other objects shade the solar collectors or if the glass is dirty, the effectiveness of the solar
collectors will be greatly reduced. Have the trees trimmed or the solar collectors relocated if the
obstruction is permanent or clean the collector glass (refer to “Collector Glass” on page 11).
Collector area is too small
For most installations, the number of solar collectors recommended in Solahart literature has been
proven to provide the required solar energy to meet the average family needs. However, in some
circumstances, it may be necessary to install an additional solar collector.
Are you using more hot water than you think?
Is one outlet (especially the shower) using more hot water than you think?
Very often it is not realised the amount of hot water used, particularly when showering. Carefully review
the family‟s hot water usage. As you have installed an energy saving appliance, energy saving should
also be practised in the home. Adjust your water usage pattern to take advantage of maximum solar
gains.
Have your plumber install a flow control valve to each shower outlet, basin and sink to reduce water
usage.

SAVE A SERVICE CALL
16
Temperature pressure relief valve running
Is the relief valve discharging too much water?
Refer to “Temperature Pressure Relief Valve Running” on page 16.
Thermostat setting
Ensure the thermostat setting is appropriate. You may choose to have your electrician adjust the
thermostat upwards to gain additional hot water capacity when boosting. Refer to “Temperature
Adjustment” on page 5.
Warning: Hotter water increases the risk of scald injury.
NO WATER FROM THE HOT TAP
No flow of water from the hot tap may indicate a restriction in or failure of the cold water supply to the water
heater. Check for water flow at other taps and that the cold water isolation valve (refer to page 32)is fully
open.
WATER NOT HOT ENOUGH
You may find that due to heavy hot water usage or low solar energy gain the water temperature may be
lower than normally expected. Ensure the booster is being used as advised. If a timer is installed, you will
need to carefully plan your use of the booster heating unit to boost the water temperature on such occasions.
Refer to “Booster Control” on page 7.
A lower water temperature may also be noticed in the morning when the booster heating unit has not been
energised overnight. This in particular may be experienced during periods of low solar energy gain, or if there
has been heavy hot water usage the previous night.
TEMPERATURE PRESSURE RELIEF VALVE RUNNING
Normal Operation
It is normal and desirable this valve allows a small quantity of
water to escape during the heating cycle. However, if it discharges
more than a bucket full of water in 24 hours, there may be another
problem.
Continuous dribble
Try gently raising the easing lever on the relief valve for a few
seconds (refer to “Temperature Pressure Relief Valve” on
page 11). This may dislodge a small particle of foreign matter and
clear the fault. Release the lever gently.
Steady flows for long period (often at night)
This may indicate the mains water pressure sometimes rises
above the designed pressure of the water heater. Ask your
installing plumber to fit a pressure limiting valve.
Warning: Never replace the relief valve with one of a higher
pressure rating.
Heavy flows of hot water until the water heater is cold - then stops until water reheats
The water heater must be switched off at the isolating switch or switchboard. Phone your nearest
Solahart Dealer to arrange for an inspection.
EXPANSION CONTROL VALVE RUNNING
If an expansion control valve is fitted in the cold water line to the water heater (refer to page 32)it may
discharge a small quantity of water instead of the temperature pressure relief valve on the water heater. The
benefit is that energy is conserved as the discharged water is cooler.

SAVE A SERVICE CALL
17
COLLECTOR GLASS
The Solahart warranty DOES NOT cover breakage of solar collector glass. Check your household insurance
policy covers collector glass breakage.
Warning: No attempt should be made to remove or replace broken collector glass.
The collector glass is not offered as a replacement part. Should the solar collector require replacement,
contact your nearest Solahart Dealer.
HIGHER THAN EXPECTED ELECTRICITY BILLS
With the installation of your new solar hot water system, maximum electrical energy savings can be achieved
with careful planning of hot water usage. Should you at any time, feel your electricity bill is higher than
expected, we suggest you check the following points:
Is the relief valve running excessively?
Refer to “Temperature Pressure Relief Valve Running” on
page 16.
Is one outlet (especially the shower) using more hot water than
you think?
Refer to “Not Enough Hot Water (or No Hot Water)”on page 15.
Is there a leaking hot water pipe, dripping hot water tap, etc?
Even a small leak will waste a surprising quantity of hot water and
energy. Replace faulty tap washers, and have your plumber rectify
any leaking pipe work.
Are you using the booster heating unit properly?
Refer to “Booster Control” on page 7.
Has there been an increase in hot water usage?
An increase in hot water usage may result in an increase in booster operation.
Has your water heating tariff rate been increased by your electricity retailer since your previous bill?
ELECTRICITY TARIFFS
The electricity tariff to which your solar water heater is connected will play an important role in the overall
effectiveness of the system. It is important you are aware of this tariff to enable you to take full advantage of
the boosting period, i.e. Domestic / Continuous or Time of Use, or Extended Off-Peak (overnight and day) /
extended time controlled.
IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE,
PHONE YOUR NEAREST SOLAHART DEALER.

18
INSTALLATION –SOLAR STORAGE TANK
THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING.
The system is suitable for installation with Solahart J, KF, LCS, TBT200 or BT solar collectors.
IMPORTANT NOTES
Working on roofs is and should always be considered a hazardous activity, particularly early in the
morning, late in the evening, when the roof is wet or during and after periods of rain.
All work must be carried out in accordance with Local, State and Federal Occupational Safety, Health
and Welfare Regulations. In particular, the requirements for safety whilst manual lifting, working at
heights and on roofs.
Installers must be competently trained in:
Height Hazard Assessment
Working at Height Procedures
Assessment / Use / Wearing of correct height safety equipment (harnesses etc.)
All other relevant safety factors specific to the installation and maintenance work to be compliant
with suitable Occupational, Health and Safety Regulations / Codes.
All relevant permits shall be obtained from the regulatory authorities before commencing work to install
the solar hot water system.
All work carried out must be performed by appropriately qualified tradespeople or be suitably supervised
for trades assistant duties.
Every care must be taken to protect and warn occupants of the building and the public from personal
injury which may occur from falling tools, roof materials, fittings or any other hazards of a general nature.
Advise the occupants of any inconvenience which may occur due to disconnection of existing water and
electrical supplies.
The connection, attachment, integration or general association of other equipment or parts which either
directly or indirectly affect the operation or performance of this equipment could void the Solahart
warranty.
All packaging must be removed from the water heater prior to its installation. This includes the removal
of the cardboard base of the carton from the underside of the water heater.
INSTALLATION STANDARDS
The water heater must be installed:
by a qualified person, and
in accordance with the installation instructions, and
in compliance with Standards AS/NZS 3500.4, AS/NZS 3000 and all local codes and regulatory authority
requirements.
In New Zealand, the installation must also conform with Clause G12 of the New Zealand Building Code.
Victorian Installers
Notice to Victorian Installers from the Victorian Plumbing Industry Commission if this solar water heater is
installed in a new Class 1 dwelling in the State of Victoria. The system model number is to be recorded on
the Certificate of Compliance. It is also a requirement to provide the householder with permanent
documentation recording the system model number exactly as it is shown in the „List of systems capable of
complying with the regulations‟ published by Sustainability Victoria (see www.sustainability.vic.gov.au). This
documentation may be in the form of an indelible label adhered to the solar storage tank, or other suitable
form placed in an accessible location, such as the meter box, for later inspection.

INSTALLATION –SOLAR STORAGE TANK
19
WATER HEATER APPLICATION
This water heater is designed for use in a single family domestic dwelling for the purpose of heating potable
water. Its use in an application other than this may shorten its life.
If this water heater is to be used where an uninterrupted hot water supply is necessary for the application or
business, then there should be redundancy within the hot water system design. This should ensure the
continuity of hot water supply in the event that this water heater was to become inoperable for any reason.
We recommend you provide advice to the system owner about their needs and building backup redundancy
into the hot water supply system.
Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in
potable water. This water heater can satisfy this AS 3498 requirement provided the electric booster is
energised for a sufficient period each day and the electric booster thermostat setting is 60°C or higher.
SOLAR WATER HEATER STORAGE TANK LOCATION
The solar storage tank is suitable for either outdoor or indoor installation. The solar storage tank should be
installed close to the most frequently used outlet and its position chosen with safety and service in mind.
Consideration must also be given to the position of the
solar storage tank in relation to the solar collectors. There
are limitations on both the maximum length of the solar hot
and solar cold pipes and the maximum height between the
solar storage tank and the solar collectors. Refer to “Solar
Collector Location” on page 27 and to “Pipe Lengths” on
page 28.
Clearance must be allowed for servicing of the solar
storage tank. The solar storage tank must be accessible
without the use of a ladder or scaffold. Make sure the
temperature pressure relief valve lever is accessible and
the front covers, thermostat and booster heating unit can
be removed for service.
You must be able to read the information on the rating
plate. If possible leave headroom of one water heater
height so the anode can be inspected or replaced.
Remember you may have to remove the entire solar
storage tank later for servicing.
The solar storage tank is to be installed at ground or floor level and must stand vertically upright on a stable
base as acceptable to local authorities. Remember all local authorities have regulations about putting water
heaters into roof spaces.
Note: It is important for the solar storage tank to be orientated vertically upright in order for the falling film of
closed circuit fluid to operate efficiently.
The top of the solar storage tank must be a minimum of 500 mm below the bottom of the solar collectors for
the system to operate correctly.
SAFE TRAY
Where damage to property can occur in the event of the water heater
leaking, the water heater must be installed in a safe tray. Construction,
installation and draining of a safe tray must comply with
AS/NZS 3500.4 and all local codes and regulatory authority
requirements. AS/NZS 3500.4 also has particular requirements when a
safe tray must be installed.

INSTALLATION –SOLAR STORAGE TANK
20
FREEZE PROTECTION
The water heater has a freeze protection system. The water heater is not suitable for installation in areas
where the ambient temperature falls below -20°C.
The solar circuit must be installed with a continuous fall of a minimum 5° (1 in 10 grade) in the pipe work
from the solar collector to the solar storage tank, with the full length of the solar hot and solar cold pipes
insulated and the system charged with correctly mixed closed circuit fluid to offer protection against freeze
damage. The system has NO WARRANTY for freeze damage if there is not a continuous fall in the solar hot
and solar cold pipes, or they are not insulated in accordance with the installation instructions, or the closed
circuit fluid has been incorrectly mixed (refer to “Terms of the Solahart Warranty” on page 57 and to
“Warning: Plumber Be Aware” on page 29).
The solar collectors and solar cold and solar hot pipes only contain closed circuit fluid when the pump is
operating during periods of solar gain when heating is required. When the solar pump stops operating, the
closed circuit fluid drains back into the storage tank heat exchanger. The closed circuit fluid is an anti-freeze
agent which, when mixed to the correct specification, can withstand temperatures of -20°C before it may
freeze.
Damage to the water heater caused by freezing of the pipe work to or from the water heater is not covered
under the Solahart warranty. Refer to AS/NZS 3500.4 for precautions to be taken for installations in frost
prone areas.
MAINS WATER SUPPLY
Where the mains water supply pressure exceeds that shown in the table below, an approved pressure
limiting valve is required and should be fitted as shown in the installation diagram (refer to diagram on
page 32).
Model
270
Relief valve setting
1000 kPa
Expansion control valve setting *
850 kPa
Max. mains supply pressure
With expansion control valve
680 kPa
Without expansion control valve
800 kPa
* Expansion control valve not supplied with the water heater.
TANK WATER SUPPLY
If the water heater is supplied with water from a tank supply and a pressure pump system is not installed,
then the bottom of the supply tank must be at least 1 m above the highest point of the hot water plumbing
system, including the solar storage tank. Care must be taken to avoid air locks. The cold water line to the
water heater should be adequately sized and fitted with a full flow gate valve or ball valve.