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
Direct Open Circuit
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 and pressures.
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 water 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.
Note: Failure to observe these requirements increases the risk of freeze damage.
Uninsulated pipe work, including concealed in cavities and roof spaces or where it may be in contact
with a metal roof, may lead to freeze damage. There is NO WARRANTY for freeze damage if the
solar hot and solar cold pipes are not insulated in accordance with the installation instructions.
The insulation is essential to assist in providing freeze protection, 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 water can flow from the solar collectors to the solar storage tank
and also reduce pipe heat losses.
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 and pressure of the water
generated by the solar collectors under stagnation conditions. The solar collectors can generate
extremely high water temperatures up to 150°C and high water pressure of 1000 kPa. Plastic pipe
cannot withstand these temperatures and pressures and MUST NOT be used. Failure of plastic pipe
can lead to the release of high temperature water and cause severe water damage and flooding.
A non return valve MUST BE installed on the cold water line to the solar storage tank AFTER the
cold water branch to a temperature limiting device. Due to the higher water temperatures generated
under certain conditions in the solar collectors of this solar water heater, an additional effective back-
flow prevention device also should be used as an extra safeguard. Valve manufacturer RMC
recommends Dual Check Valve model N7150, as being suitable for this application.
Plumber: It is important to refer to and read in full the complete
“Warning: Plumber – Be Aware” statement commencing on page 38.

3
CONTENTS
HOUSEHOLDER –We recommend you read pages 4 to 23.
The other pages are intended for the installer but may be of interest.
About Your Water Heater............................................................................................................ 4
Regular Care .............................................................................................................................. 14
Water Supplies........................................................................................................................... 17
Save A Service Call................................................................................................................... 20
Installation –System................................................................................................................. 24
Installation –Solar Storage Tank............................................................................................. 26
Installation –Solar Control Unit............................................................................................... 32
Installation –Solar Collectors.................................................................................................. 35
Connections –Plumbing .......................................................................................................... 40
Connections –Electrical........................................................................................................... 43
Commissioning.......................................................................................................................... 47
Draining The Solar Collectors.................................................................................................. 50
Draining The Water Heater ....................................................................................................... 50
Warranty..................................................................................................................................... 53
Solahart Offices......................................................................................................................... 56

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
The Solahart®Streamline®open circuit solar water heater system is designed for
the solar collectors to be roof mounted and the vitreous enamel lined solar
storage tank to be remotely installed at ground of floor level. The solar storage
tank is suitable for either outdoor or indoor installation and can be installed with
Solahart L, LCS or TBT200 (T) solar collectors. This single element model solar
storage tank has only one front cover, located at the midpoint of the tank.
The system has a level of freeze protection designed to guard the system
against damage from freeze conditions (refer to “Freeze Protection” on
page 10). The system must be installed with the full length of the solar hot and
solar cold pipes insulated and power must be available at the solar control unit
to offer protection against freeze damage (refer to “Pipe Work and Insulation” on
page 10). Freeze conditions occur below 6°C.
A system has NO WARRANTY for freeze damage when installed above
400 metres altitude or if the solar hot and solar cold pipes are not insulated in
accordance with the installation instructions or if power is not available at the
solar control unit (refer to “Terms of the Solahart Warranty” on page 53).
Note: The Solahart warranty against freeze damage applies only to systems
installed in Australia.
This water heater is designed to be installed as an electric boosted solar water heater with its booster
heating unit connected to a power supply, however it may be installed with an in-series continuous flow or
storage booster.
If this water heater is installed with an in-series booster, then the electric booster heating unit will not be
connected to a power supply and the references to the electric booster heating unit, thermostat and boosting
controls in this Guide will not be applicable to the installation. For information relating to the function and
operation of the in-series booster, refer to the Owners Guide and Installation Instructions supplied with the
booster water heater.
Automatic safety controls are fitted to the water heater to provide safe and efficient operation.
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 26, a pressure limiting valve must be
fitted. The supply pressure should be greater than 350 kPa for true mains pressure operation to be achieved.
A minimum water supply pressure of 200 kPa is required to enable the solar circulator and solar circuit
system to operate effectively.
SOLAR OPERATION
The operation of the circulator is controlled by the combination of:
the hot sensor located at the outlet of the solar collectors.
The hot sensor measures the water temperature at the outlet of the solar collectors.
the cold sensor located at the solar cold outlet at the base of the solar storage tank
The cold sensor measures the water temperature at the bottom of the solar storage tank.
the differential controller located in the solar control unit.

ABOUT YOUR WATER HEATER
5
Normal operation
As the sun heats the water in the solar collectors, the increase in temperature activates the circulator. The
circulator switches on whenever the water in the solar collectors is hotter than the water in the solar storage
tank. The circulator moves the hotter water from the solar collectors through the solar hot pipe to the solar
storage tank and the cooler water from the solar storage tank is circulated to the solar collectors via the solar
cold pipe to be heated by the sun‟s energy.
This process continues whilst solar energy is available and the water in the solar storage tank requires
heating. The circulator will deactivate when the water temperature in the solar storage tank is around 70°C to
75°C. The water heater will then enter Over-temperature operation.
During normal operation if the amount of solar energy available reduces, such as when the sky becomes
very cloudy or the sun becomes lower in the sky in the late afternoon, and the water no longer gains useable
heat from the solar collectors, the circulator will deactivate. The water heater will then enter standby mode.
Over-temperature operation
The purpose of the Over-temperature operation is to reduce the amount of overheating or „stagnation‟ of
water in the solar collectors. When the water in the solar storage tank has reached 70°C to 75°C and the
circulator has deactivated, the solar collectors will continue to gain heat while solar energy is still available.
If the water in the solar collectors stagnates and its temperature becomes very high, the circulator will
activate for a short period to transfer this extra energy to the solar storage tank. The circulator will deactivate
when the water temperature in the solar collectors decreases. This process will either repeat for a maximum
of eight cycles or until the water temperature in the solar storage tank reaches around 75°C to 80°C or the
hot sensor does not sense another increase in water temperature to a stagnation level after a cycle is
completed, i.e. the solar energy available reduces.
Night Time Cooling operation
The purpose of Night Time Cooling operation is to rid the solar storage tank of excess solar energy gained
by Over-temperature operation during that day. The desired water temperature in the solar storage tank is to
be between 60°C to 70°C.
If the solar control unit has entered Over-temperature operation during the day, then after the water
temperature in the solar collectors reduces later in the day or early evening, the circulator will activate. Water
from the solar storage tank will circulate through the solar collectors and excess heat in the water will radiate
from the solar collectors reducing the temperature of the water. The water will circulate for a period of time
and until the water temperature in the solar storage tank is around 60°C to 70°C. The water heater will then
enter standby mode.
Freeze Protection operation
The purpose of Freeze Protection operation is to prevent freezing of water in the solar collectors and solar
pipe work in very cold conditions. The water in the solar collectors will cool during periods of no solar gain. In
very cold conditions, such as overnight and very early in the morning before sunrise, the water temperature
can approach freezing point.
If the hot sensor measures that the water temperature in the solar collectors is approaching freezing, the
circulator will activate. Water from the solar storage tank, containing more energy than the water in the solar
collectors, will circulate through the solar collectors keeping the water temperature above freezing point. The
circulator will remain on for some minutes and until the hot sensor measures a water temperature at a safe
level above freezing. When both of these conditions are met, the circulator will deactivate. The water heater
will then enter standby mode.
This process will repeat whenever the hot sensor measures that the water temperature in the solar collectors
is approaching freezing.
Refer to “Freeze Protection” on page 10 and “Pipe Work and Insulation” on page 10.
Standby mode
The water heater will be in Standby mode whenever conditions are not favourable for solar heating in Normal
operation, and Over-temperature operation and Night Time Cooling are not required or have been
completed, and conditions are not cold enough for or in-between Freeze Protection operation.

ABOUT YOUR WATER HEATER
6
Solar Monitor LED operation
The LEDs on the Solar Monitor, located on the side of the solar control unit, operate to show the operational
mode of the water heater. Refer also to “Solar Monitor” on page 11.
Mode
Green LED
Red LED
power on* > 48 hours
power on* < 48 hours
Normal operation
rapid pulse
3 flashes
off **
Over-temperature operation
rapid pulse
3 flashes
off, or solid then off
Night Time Cooling operation
rapid pulse
3 flashes
off
Freeze Protection operation
rapid pulse
3 flashes
off
Standby mode
solid
slow pulse
off
Notes
* Power from the GPO to the solar control unit.
** In Normal Operation the red LED may emit a rapid pulse for a short period of time under certain
circumstances (refer to “Rapid Pulsing” on page 22).
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 amount of water heated by the raised booster heating unit of the Streamline solar storage tank is
220 litres (410 model), 170 litres (320 model) or 140 litres (270 model).
The water heater is most suited for the booster heating unit to be connected to either a continuous, or a time
of use, or an extended Off-Peak (overnight and day) electricity supply. A timer can also be used to control
the boosting periods and help maximise solar savings. Refer to “Booster Control” on page 8.
The booster heating unit may be connected to an Off-Peak (overnight) electricity supply, however this will
only allow the booster to heat the water overnight. If this type of connection is considered, care must be
taken to ensure there is sufficient boost capacity to meet the household‟s full day and night‟s hot water
supply during periods of no or low solar gain, particularly in cold weather.
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 front cover. The water temperature is
automatically controlled to the thermostat setting when the booster heating unit is energised.

ABOUT YOUR WATER HEATER
7
HOW HOT SHOULD THE WATER BE?
The solar control unit will circulate water through the solar collectors
until a temperature of 70°C to 80°C is reached.
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 8.
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.
If this water heater is installed with an in-series continuous flow gas
booster, then this requirement of AS 3498 can be satisfied provided
the booster is energised, its preset outlet temperature setting is
70°C or higher and a remote temperature controller is not used.
If this water heater is installed with an in-series storage booster, then this requirement of AS 3498 can be
satisfied provided the storage booster is energised and its 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 7.
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 14 and to “Anode Inspection and Replacement” on page 18.
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.
typical maximum
temperature from solar gain
maximum recommended
supply temperature to
bathrooms and ensuites
minimum booster setting
maximum booster setting

ABOUT YOUR WATER HEATER
8
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 cover or solar control unit cover will expose 240 V wiring. It
must only be removed by a qualified person.
The power lead from the solar controller must be plugged into a weatherproof electrical outlet if installed
outdoors. Take care not to touch the power plug with wet hands.
Care should be taken not to touch any exposed pipe work or fittings connecting the solar storage tank and
the solar collectors, as this may result in a burn injury. Very high temperature hot water and in some
circumstances high temperature steam 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.
Note: Any exposed pipe work or fittings in the solar circuit should be attended to and covered with insulation.
Phone your nearest Solahart Dealer to arrange for an inspection.
SAFETY
This water heater is supplied with a thermostat, an over-temperature energy cut-out, temperature sensors
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 power supply cord or plug to the solar control unit or the electrical conduit to the solar storage tank is
damaged, it must be replaced by a qualified person in order to avoid a hazard. The power supply cord and
plug must be replaced with a genuine replacement part available from Solahart. 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.
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.

ABOUT YOUR WATER HEATER
9
Timer Control Switch
A 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.
If used with an extended Off-Peak (overnight and day) electricity supply, the timer switch should:
be operated by a continuous power supply on its own circuit from the switchboard with the booster
heating unit operated by the Off-Peak power supply. A double pole isolating switch is required to be
installed at the switchboard to simultaneously isolate both circuits.
or
be of a type which has an internal rechargeable battery to keep time when the power supply is not
available to the timer.
Programming the Timer
Power must be available to the timer control switch before the booster heating unit can be activated.
The timer control switch should be programmed:
to suit the hot water consumption pattern of the household,
with the end of the period to coincide with the commencement of the evening hot water usage,
to enable a boosting period of not less than the recommended continuous length of time for boosting,
for a period when power will be available to the timer.
It may be necessary to program a second period into the timer, such as prior to the morning hot water usage.
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 ½ hours
2 ½ hours
1 ¾ hours
Temperate / sub tropical climate
15°C
45°C
3 ¼ hours
2 ¼ hours
1 ¾ hours
Tropical climate
20°C
40°C
2 ¾ hours
2 hours
1 ½ hours
320
Cool / temperate climate
10°C
50°C
4 ¼ hours
3 hours
2 ¼ hours
Temperate / sub tropical climate
15°C
45°C
3 ¾ hours
2 ½ hours
2 hours
Tropical climate
20°C
40°C
3 ½ hours
2 ¼ hours
1 ¾ hours
410
Cool / temperate climate
10°C
50°C
5 ½ hours
3 ¾ hours
2 ¾ hours
Temperate / sub tropical climate
15°C
45°C
5 hours
3 ¼ hours
2 ½ hours
Tropical climate
20°C
40°C
4 ½ hours
3 hours
2 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 no or 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
10
FREEZE PROTECTION
The system has a level of freeze protection designed to guard the system against damage from freeze
conditions. The system must be installed with the full length of the solar hot and solar cold pipes insulated
and power must be available at the solar control unit to offer protection against freeze damage (refer to “Pipe
Work and Insulation” on page 10). Freeze conditions occur below 6°C.
The anti freeze control is designed to recirculate a small amount of water from the solar storage tank through
the solar pipe work and solar collectors during periods of low temperatures. This is to prevent the water
inside the pipe work and collectors from freezing. It is essential the electrical circuit to the solar control unit is
continually turned on if there is a risk of freezing. The Solahart warranty does not cover damage caused by
freeze conditions when the electrical circuit to the solar control unit is turned off or interrupted.
A system has NO WARRANTY for freeze damage when installed above 400 metres altitude or if the solar
hot and solar cold pipes are not insulated in accordance with the installation instructions or if power is not
available at the solar control unit (refer to “Terms of the Solahart Warranty” on page 53). Note: The Solahart
warranty against freeze damage applies only to systems installed in Australia.
Notes:
A system is not covered for freeze damage above 400 metres altitude by the Solahart warranty.
The freeze protection system will be rendered inoperable if electrical power is not available at the solar
control unit. Damage caused by freezing due to no power at the solar control unit, is not covered by the
Solahart warranty.
If it is necessary to switch the power off to the solar control unit and there is a risk of freezing, then it is
necessary to have your plumber drain the solar collectors and solar flow and return pipe work.
Refer to “Terms of the Solahart Warranty” on page 53.
PIPE WORK AND INSULATION
The solar hot and solar cold pipe work between the solar storage tank and the solar collectors and between
the solar storage tank and in-series booster (if one is installed) 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 temperature of the water 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.
Note: Failure of these requirements to be observed increases the risk of freeze damage.
Uninsulated pipe work, including concealed in cavities and roof spaces or where it may be in contact with a
metal roof, may lead to freeze damage. There is NO WARRANTY for freeze damage if the solar hot and
solar cold pipes are not insulated in accordance with the installation instructions.
Note: Any exposed pipe work or fittings in the solar circuit should be attended to and covered with insulation.
Phone your nearest Solahart Dealer to arrange for an inspection.
The insulation is essential to assist in providing freeze protection, 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 water can flow from the solar collectors to the solar storage tank and also reduce pipe
heat losses.
Plastic pipe MUST NOT be used, as it will not withstand the temperature and pressure of the water
generated by the solar collectors under certain conditions (refer to Warning on page 38).

ABOUT YOUR WATER HEATER
11
SOLAR MONITOR
A solar monitor is located on the side of the solar control unit and houses 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”, may indicate a potential fault mode.
The green LED will emit either a constant glow, a constant
pulsing or a series of flashes, with a 2 second interval
between each series.
The red LED will emit either a constant glow, a constant
pulsing or a series of flashes with a 2 second interval
between each series. A constant glow or pulsing does not
necessarily mean there is a fault with the system. A series of
flashes indicates there may be a particular fault condition with
the system.
The operational modes are:
Flashes
Operational Modes
Flashes
Indicator or Fault Modes
solid green
(remains on)
Standby mode
solid red
(remains on)
Hot sensor temperature
greater than 130°C
green
slow pulse
Standby mode
(power on for less than 48 hours)
red
rapid pulse
Temperature rise across collector
greater than 45°C
(circulator at full speed)
green
rapid pulse
Circulating water through collectors
3 x red
Hot sensor in collector –short circuit
3 x green
Circulating water through collectors
(power on for less than 48 hours)
4 x red
Hot sensor in collector –open circuit
no green
(remains off)
Power outage or call for service
5 x red
Cold sensor –short circuit
6 x red
Cold sensor –open circuit
If the power supply to the solar control unit is on and the green LED is off or the red LED is flashing, this
indicates there may be a fault with the water heater. The red LED may emit from three to six flashes in each
series of flashes. A constant glow or pulsing of the red LED does not necessarily mean there is a fault with
the system.
Notes:
If the system is in standby mode with the green LED emitting either a constant glow or slow pulsing
flashes (circulator is off) and the solar storage tank is full of hot water, the red LED may simultaneously
emit a constant glow if solar radiation is still being received by the solar collectors. This does not indicate
a fault. The red LED will go out when the temperature in the solar collectors decreases.
During periods of high solar radiation and the circulator activates after having been off (the green LED
will emit either a rapid pulse or a series of three flashes), it is possible the red LED may simultaneously
emit a rapid pulse for a period of up to ten (10) minutes. This does not indicate a fault.
If the red LED continues to emit a rapid pulse for longer than ten (10) minutes, or emits a series of flashes,
then count the number of flashes and phone your nearest Solahart Dealer to arrange for an inspection.

ABOUT YOUR WATER HEATER
12
BLEEDING THE SOLAR COLLECTORS
It is necessary to purge air from the collector circuit:
When the water heater is to be turned on and the solar collectors and solar hot and solar cold pipes
have been drained.
After maintenance has been conducted on the pipe work and air has entered the system.
If the circulator appears not to be circulating water around the system.
Warning: It is important bleeding of the collector circuit be conducted early in the morning, within three
hours of sunrise, when the sun is low in the sky. The water temperature inside the solar collectors is lower as
the solar collectors would not have had a chance to gain as much heat as later in the day. Bleeding the
collector circuit at a time later than this can result in the discharge of high temperature water and in some
circumstances, high temperature steam.
To purge air from the collector circuit:
Ensure the water heater is full of water and all of the hot
taps are turned off.
Using a flat blade screwdriver, open the bleed valve (if it
is not already open) fitted adjacent to the solar hot water
(from collector) inlet of the solar storage tank (see
diagram).
The mains pressure will force water to flow from the tank
and through the pipe work, expelling air from the
collector circuit through the bleed valve. This is
evidenced by spurting of water from the drain line
connected to the bleed valve.
Warning: Stand well aside of the air bleed valve
drain pipe discharge point and exercise care to avoid any
splashing of water, as water or in some circumstances
steam discharged from the solar collectors may be of a
very high temperature.
Close the bleed valve when water runs freely from the
drain line.
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.
Switch off the electrical supply at the power outlet to the solar control unit (refer to note below).
Close the cold water isolation valve at the inlet to the water heater.
Notes:
The freeze protection system will be rendered inoperable if electrical power is not available at the solar
control unit. Damage caused by freezing due to no power at the solar control unit is not covered by the
Solahart warranty. Refer to “Terms of the Solahart Warranty” on page 53.
If there is a risk of freezing, the electrical supply to the solar control unit should not be switched off
unless the solar collectors and solar flow and return pipe work are drained, otherwise damage could
result (refer to “Freeze Protection”on page 10).
AIR BLEED VALVE & SOLAR
NON RETURN VALVE ASSEMBLY
Solar Pumped Open Circuit

ABOUT YOUR WATER HEATER
13
TO TURN ON THE WATER HEATER
Open the cold water isolation valve fully at the inlet to the water heater.
If the solar collectors and solar hot and solar cold pipes have been drained, it will be necessary to bleed
the collector circuit (refer to “Bleeding the Solar Collectors” on page 12).
If the electrical supply to the water heater has been switched off:
Switch on the electrical supply at the power outlet to the solar control unit. The power outlet must be
switched on for the solar control unit to operate and solar gain to be achieved.
Switch on the electrical supply at the isolating switch to the solar storage tank.
Check and if required reset the timer, if one is installed.
GOING ON HOLIDAYS
If you plan to be away from home, conserve energy by switching the booster switch “OFF”. It is not
necessary to switch off the electrical supply at the power outlet to the solar control unit. Refer to “To Turn Off
The Water Heater” on page 12. Also if the system is not used for a period in excess of two (2) weeks it is
recommended the solar collectors be covered.
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?
Installation requirements are shown on pages 31 and 34. 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 10.
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, the solar collectors, components and fittings. Refer to “Water
Supplies” on page 17.
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 17 to 19.
HOW LONG WILL THE WATER HEATER LAST?
The water heater is supported by a manufacturer‟s warranty (refer to page 53). 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 7.

14
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 15.
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 15.
Check the drain line from the safe tray (if one is installed) is not blocked.
Check the status of the LEDs. The green LED should be illuminated (either solid, pulsing or flashing).
The red LED should be off. Refer to “Solar Monitor” on page 11 and “Household Maintenance Around
the Solar Storage Tank” on page 16.
It is important to ensure the solar controller and circulator are operating correctly, particularly at the
onset of the colder winter season. Solar gain will not be achieved and the freeze protection system will
be rendered inoperative if the solar controller or circulator are not operating.
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 anode 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 anode.
If the anode is not replaced, it should be replaced within three years of this service (refer to “Anode
Inspection and Replacement” on page 18).
Check the electric heating unit for excessive calcium build up or corrosion and replace if necessary.
Check the solar control unit for correct operation.
Flush and bleed the solar collectors.
Clean the collector glass.
Check the insulation on the solar hot and solar cold pipes. If required, insulate exposed pipe work and
repair or replace degraded insulation.
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 morning.

REGULAR CARE
15
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 21).
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 17).
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.
water
heater
drain
line
lift until water
flows from the
drain line –
lower gently

REGULAR CARE
16
FLUSHING THE SOLAR COLLECTORS
It may be necessary to flush the solar collectors if there is sediment in the water supply. This should be
conducted in the morning, within three hours of sunrise.
Warning: It is important flushing of the solar collectors be conducted early in the morning, within three
hours of sunrise, when the sun is low in the sky. The water temperature inside the solar collectors is lower as
the solar collectors would not have had a chance to gain as much heat as later in the day. Flushing the solar
collectors at a time later than this can result in the discharge of high temperature water and in some
circumstances, high temperature steam.
To flush the solar collectors:
Open a hot water tap and allow the water to run for five (5) minutes prior to flushing the solar
collector(s).
Close the hot tap.
Wait a further five (5) minutes before attempting to flush the solar collectors.
This will assist in the transfer of any high temperature water in the solar collector(s) to the solar storage
tank.
Warning: Exercise care, as water discharged from the solar collectors may be of a very high
temperature.
To flush the solar collectors, follow the procedure “Bleeding the Solar Collectors” on page 12, allowing
the water to flow from the bleed valve drain line for five minutes before closing the bleed valve.
It is recommended to flush the solar collectors every five years. This will assist in keeping the solar
collectors, solar cold pipe and solar hot pipe clear of sediment.
HOUSEHOLD MAINTENANCE AROUND THE SOLAR STORAGE TANK
Care should be taken when conducting general household maintenance, such as lawn mowing and grass
cutting, around the solar storage tank. Careless use of devices such as a whipper snipper could damage or
cut a sensor lead or the electrical cable.
If a sensor lead or the electrical cable is damaged or cut, solar contribution may not be achieved and the
freeze protection system may be rendered inoperative. In addition, if the electrical cable has been damaged
or cut, wiring may be exposed leading to a dangerous situation.
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 and
the solar control unit 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.

17
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, a heating unit and a
solar collector in a direct solar water heater system.
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 17 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
TOTAL DISSOLVEDSOLIDS& 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
18
ANODE INSPECTION AND REPLACEMENT
The anode 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 anode.
If the anode is not replaced during a five year service (refer to “Major Five Year Service” on page 14) then
the maximum time after installation when the anode 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 anode 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 the 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 or a solar collector in a direct solar water heater system. 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. Solar collectors in a direct solar water heater
system should be covered when the water heater is not intended to be used for more than two weeks.
Where the saturation index exceeds +0.80, the Solahart warranty does not apply to a standard watts density
heating unit or a solar collector in a direct solar water heater system. 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 19.
Contact your nearest Solahart Dealer if a replacement heating unit is required.
Refer to the cold water connection detail on page 40 for the position of the expansion control valve.

WATER SUPPLIES
19
-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
solar collector
copper sheathed heating unit
Saturation Index (SI) > +0.4
(if an expansion control valve is not fitted)
water heater cylinder
temperature pressure relief valve
Saturation Index (SI) > +0.8
solar collector
standard watts density heating unit

20
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.
Insufficient sunlight
Insufficient sunlight due to cloudy weather during hotter months or
low solar energy contribution in colder months may mean the
booster heating unit is required to boost more often.
Ensure the booster heating unit is being used as advised. Refer to
“Booster Control” on page 8.
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 Off-Peak or time controlled supply, remember heating hours
are restricted.
Check the fuse marked “HOT WATER” or “WATER HEATER” at the switchboard.
Solar Control Unit
Check the power outlet for the solar control unit is switched on.
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 power outlet to the solar control unit 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.
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 15).
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.
Air in collectors (no solar gain)
It is possible under certain conditions, such as when the pipe work has been opened, that air may
become trapped in the solar collectors. This will prevent the circulator from moving water around the
collector circuit. The air will need to be purged from the solar collectors (refer to “Bleeding The Solar
Collectors” on page 12).