Rheem Water Heater STREAMLINE ELECTRIC User Guide

“Streamline Electric”  
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 and pressures.  
Solahart Industries Pty Ltd  
ABN 45 064 945 848  
This water heater must be installed and serviced by an authorised person.  
Please leave this guide with the householder.  
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CONTENTS  
HOUSEHOLDER – We recommend you read pages 4 to 16.  
The other pages are intended for the installer but may be of interest.  
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INTRODUCTION  
Congratulations on choosing a “STREAMLINE ELECTRIC” solar water heater. We are confident that  
your purchase will provide you many years of trouble free hot water.  
All over the world, the Solahart name is synonymous with quality in water heating. From humble  
beginnings in the pioneering days of Western Australia, a reputation has been built up over nearly a  
century.  
In 1905, two enterprising plumbers formed the company known as S. W. Hart, a name that was  
retained for over 70 years. Even in its early stages, S. W. Hart was involved in the manufacture of metal  
products for water storage and water heating. Since 1953, S. W. Hart, now Solahart Industries Pty Ltd,  
has been producing thermosyphon solar hot water systems, which is well over 40 years of hot water  
experience.  
Solahart is the market leader in Australia and a dominant brand throughout the world. Our network of  
distributors covers over 70 countries in Europe, North America, Africa and Asia. In our home market of  
Australia, we offer the widest range of thermosyphon solar water heater products, along with the  
Streamline brand of active solar hot water systems and Synergy heat pump. Our product is positioned  
within the hot water market as a reliable, durable product with state of the art manufacturing technology.  
It is with the above in mind that we at Solahart Industries Pty Ltd are confident that your purchase of the  
“STREAMLINE ELECTRIC” water heater will provide you reliable hot water with quality after sales  
service back up.  
Thankyou  
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ABOUT YOUR WATER HEATER  
MODEL TYPE  
Congratulations for choosing a Solahart® water heater. Your Solahart Streamline® open circuit solar  
water heater is designed for the solar collectors to be roof mounted and the solar storage tank to be  
installed at ground level. The solar storage tank is suitable for either outdoor or indoor installation and  
can be installed with Solahart ‘L’ solar collectors.  
Although the system has a level of freeze protection, designed to guard the system from unexpected  
frost conditions, the system is not recommended for installation in areas subject to frost or freeze  
conditions (refer to “Freeze Protection” on page 8). Freeze conditions occur below 6°C. The system has  
NO WARRANTY for freeze damage (refer to “Warranty Exclusions” on page 37).  
If this water heater is installed as a solar preheater to an in-series water heater, 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 manual boosting controls in this Guide will not be applicable to the  
installation. For information relating to the function and operation of the in-series water heater, refer to  
the Owners Guide and Installation Instructions supplied with the water heater.  
HOW HOT SHOULD THE WATER BE?  
The solar control unit will circulate water through the solar  
collectors until a temperature of approximately 70°C is  
reached.  
typical maximum temperature  
from solar gain and maximum  
booster setting  
During periods of low solar energy gain, the water temperature  
can be boosted by the thermostatically controlled electric  
booster heating unit. This may be operated manually or  
automatically depending on how it is wired. Refer to page 10 or  
check with your electrician. An in-series water heater will boost  
the water temperature automatically when required.  
minimum booster setting and  
minimum recommended  
stored water temperature  
maximum recommended  
supply temperature to  
bathrooms and ensuites  
To meet the requirements of the National Plumbing Standard  
the temperature of the stored water must not be below 60°C.  
Solahart recommends the thermostat is set at 60°C to  
maximise solar contribution.  
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  
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ABOUT YOUR WATER HEATER  
WARNING  
This water heater is not intended to be operated, adjusted or tampered with by young children or infirm  
persons. Young children should be supervised to ensure they do not interfere with the water heater.  
The removal of the front cover will expose 240 V wiring. It must only be removed by an authorised or  
qualified person.  
Care should be taken not to touch the pipe work connecting the solar storage tank and the solar  
collectors. Very high temperature hot water 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.  
SAFETY  
This water heater is supplied with a thermostat, an over-temperature cut-out, 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.  
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 an authorised 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.  
The warranty can become void if relief valves or other safety devices are tampered with or if the  
installation is not in accordance with these instructions.  
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.  
Note: If there is a risk of freezing conditions, the electrical supply to the solar control unit should not be  
switched off unless the solar collectors are drained, otherwise damage could result (refer to “Freeze  
Protection” on page 8).  
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 8).  
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.  
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ABOUT YOUR WATER HEATER  
HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY?  
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 water heater (if one is installed) MUST BE of copper and  
fully insulated with closed cell polymer insulation or similar (minimum thickness 13 mm). The insulation  
must be weatherproof and UV resistant if exposed. 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 and also reduce pipe heat losses.  
The insulation must be fitted up to the connections on both the solar collectors and the solar storage  
tank, as very high temperature water can flow from the solar collectors to the solar storage tank under  
certain conditions.  
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 27).  
DOES THE WATER QUALITY AFFECT THE WATER HEATER?  
The water heater is suitable for most public water supplies, however some water qualities may have  
detrimental effects on the cylinder, solar collectors and fittings. If you are in a known harsh water  
conditions described on page 36.  
HOW LONG WILL THE WATER HEATER LAST?  
There are a number of factors that will affect the length of service the water heater will provide. These  
include the water quality, the water pressure, temperature (inlet and outlet) and the water usage  
pattern. However, your Solahart water heater is supported by a comprehensive warranty (refer to  
ANODE PROTECTION  
The anode(s) installed in your water heater will slowly dissipate whilst protecting the cylinder. The life of  
the water heater cylinder may be extended by arranging for an authorised person to inspect the  
anode(s) and replace if required.  
The suggested time after installation when the anode(s) should be inspected is 8 years.  
For softened water supplies or in areas of poor water quality, it is recommended the anode(s) be  
inspected 3 years earlier than shown (refer to “Water Supplies” on page 36).  
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ABOUT YOUR WATER HEATER  
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: Bleeding the solar collectors should be conducted in the morning, within three hours of  
sunrise, when the water temperature inside the solar collectors is lower.  
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).  
air bleed  
valve  
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: Exercise care to avoid any splashing of water, as  
water discharged from the solar collectors may be of a very high  
temperature.  
Close the bleed valve when water runs freely from the drain line.  
FREEZE PROTECTION  
Although the system has a level of freeze protection, designed to guard the system from unexpected  
frost conditions, the system is not recommended for installation in areas subject to frost or freeze  
conditions. Freeze conditions occur below 6°C. The system has NO WARRANTY for freeze damage  
(refer to “Warranty Exclusions” on page 37).  
The anti freeze control is designed to recirculate a small amount of water from the solar storage tank  
through the solar pipe work during periods of low temperatures. This is to prevent the water inside the  
pipe work from freezing. The solar hot and solar cold pipes must be fully insulated with closed cell  
polymer insulation (minimum thickness 13 mm) to offer protection against freeze damage. It is essential  
that the electrical circuit to the solar control unit is continually turned on if there is a risk of freezing. The  
solar warranty does not cover damage caused by freeze conditions.  
Notes:  
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.  
The freeze protection system will be rendered inoperable if electrical power is not available at the  
solar control unit.  
Pipe work between the solar collectors and solar storage tank must be insulated.  
The system is not covered for freeze damage.  
Refer to “Warranty Exclusions” on page 37.  
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HOW YOUR WATER HEATER WORKS  
The Solahart Streamline open circuit system has its vitreous enamel lined solar storage tank installed at  
ground or floor level, remotely from the solar collectors. As the sun heats the water in the solar  
collectors the increase in temperature activates the circulator. The circulator then moves the water from  
the solar collectors through an insulated copper pipe to the solar storage tank. The circulator switches  
on whenever the water in the solar collectors is hotter than the water in the tank. Cooler water from the  
solar storage tank is circulated to the solar collectors to be heated by the sun’s energy. This process  
continues while solar energy is available and until the water in the solar storage tank reaches a  
temperature of approximately 70°C. 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 18, a pressure limiting  
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 winter  
months. The Streamline water heater is suitable for the  
heating unit to be connected to an Off-Peak electricity  
supply, but can be connected to an extended Off-Peak or  
continuous 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  
front cover. The water temperature is automatically  
controlled to the thermostat setting when the booster heating  
unit is energised.  
MANUAL CONTROLS  
An isolating switch is installed in your electrical meter box for  
your solar storage tank. Solahart recommends an additional  
manual isolating switch be installed in the power supply  
circuit to the solar storage tank. This booster switch should  
be installed in a convenient location such as the kitchen or  
laundry and will enable control of the electrical boosting  
during periods of poor solar gain.  
A suitably rated single-pole on / off switch should be used to control a booster heating unit connected to  
an Off-Peak electricity supply. A booster heating unit connected to a continuous electricity supply  
should be controlled by either a suitably rated single pole on / off switch or “One Shot Control” switch.  
The amount of water heated by the raised booster heating unit of your Streamline storage tank will be  
285 litres (430 model), 200 litres (340 model) or 160 litres (270 model).  
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HOW YOUR WATER HEATER WORKS  
MANUAL ON/OFF SWITCH  
a) Off-Peak (overnight) Tariff Connection  
Most systems will be connected to an Off-Peak supply of electricity. Boosting will only occur overnight  
(usually between 11:00 PM and 6:00 AM). In the winter months many households will find it necessary  
to leave the booster switch ON. However, in some cases it may only be necessary to switch the booster  
switch ON every second night. This can be determined over a trial period. At other times, care should  
be taken not to leave the switch on during periods of no power, as solar savings will be reduced if the  
booster heating unit activates upon resumption of power.  
b) Extended Off-Peak (overnight and day) Tariff Connection  
Operation is very similar to that suggested for continuous  
tariff, but it is important to be aware of the hours during which  
electricity is available so boosting, if required, can be adapted  
to suit. (Check with your local Electricity Supply Authority for  
hours of operation). Do not leave the booster switch on during  
daylight hours unless boosting is required, as solar savings  
will be reduced.  
c) Continuous Tariff Connection  
Operate the booster switch to activate the auxiliary booster  
heating unit when the hot water falls below an acceptable  
temperature. The amount of water heated depends on your  
installation (refer to “Manual Controls” on page 9). It is  
important to ensure the booster switch is turned OFF after you  
have satisfied your hot water needs. Do not leave the booster  
switch ON in daylight hours because your solar savings will  
be reduced.  
“ONE SHOT CONTROL” SWITCH  
The “One Shot Control” switch will help provide maximum savings with an electrically boosted solar  
water heater connected to a continuous electricity supply. Power must be available to the “One Shot  
Control” switch before the booster heating unit can be activated.  
The switch has a push button operation and incorporates an  
indicator light. Refer to the manufacturer’s instructions  
supplied with the “One Shot Control” switch for information on  
how the indicator light arrangement works.  
When you decide the hot water is below a usable temperature  
and additional hot water is required, press the control button.  
The booster heating unit will be turned “ON” if the water  
temperature is below the thermostat setting, then  
automatically turn “OFF” when the water temperature reaches  
the thermostat setting.  
It is not necessary to activate the booster heating unit every time the light indicates that boosting may  
be required. The water may still be at a usable temperature for some purposes (e.g. showering) and  
you may not need to use hot water for some hours during which time the water may be heated by the  
sun.  
Remember, even on cloudy days your solar water heater can receive diffuse radiation, which  
will provide some heat to your stored water. On these days you will need to operate the booster  
heating unit only as desired. For summer operation it is recommended trial periods be  
undertaken to determine if it is necessary to turn the booster switch or one shot control ‘on’ at  
all.  
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HOW YOUR WATER HEATER WORKS  
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 6. Also if the system is not used for a period in excess of  
two (2) weeks it is recommended the solar collectors be covered.  
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REGULAR CARE  
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  
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.  
water  
heater  
If water does not flow freely from the drain line when  
the lever is lifted, then the water heater should be  
checked by your nearest Solahart Dealer.  
lift until water  
flows from the  
drain line –  
The temperature pressure relief valve should be  
drain  
line  
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 (refer to  
lower gently  
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.  
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REGULAR CARE  
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.  
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 8,  
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.  
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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 summer  
months or low solar energy contribution in winter months  
may mean you will need to switch on the booster heating  
unit more often.  
Booster heating unit not operating  
Inspect the isolating switch marked “HOT WATER” or  
“WATER HEATER” at the switchboard and the booster  
switch (if one is installed) and ensure they are turned  
“ON”.  
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 (refer to “Off-Peak  
Tariff” on page 10).  
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.  
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 12).  
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  
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 to reduce water usage.  
Temperature pressure relief valve running  
Is the relief valve discharging too much water? (Refer to “Temperature Pressure Relief Valve  
Running” on page 15).  
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SAVE A SERVICE CALL  
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.  
Water heater size  
Do you have the correct size water heater for your requirements? The sizing guides in the sales  
literature and on the Solahart website (www.solahart.com.au) suggest average sizes that may be  
needed.  
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. You will need to carefully plan your use of the booster heating unit to  
boost the water temperature on such occasions.  
A lower water temperature may also be noticed in the morning when the booster heating unit has not  
been switched on 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 12). 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.  
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 28) it may  
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SAVE A SERVICE CALL  
HIGH 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 account  
is too high, we suggest you check the following points:  
Is the relief valve running excessively? (Refer to  
page 15).  
Is one outlet (especially the shower) using more hot  
water than you think? (Refer to “Not Enough Hot  
Water” on page 14).  
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 “Manual On/Off Switch” on page 10 and  
Consider recent changes to your hot water usage  
pattern and check if there has been any increase in  
tariffs since your previous account.  
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. Off-Peak (overnight) or time controlled, Extended Off-Peak  
(overnight and day) or extended time controlled, Domestic / Continuous. For types of tariffs, refer to  
COLLECTOR GLASS  
Warranty DOES NOT cover breakage of solar collector glass. Check your household insurance policy  
covers collector glass breakage.  
Warning: Collector glass must not be replaced whilst the solar collector is on the roof.  
The collector glass is not offered as a replacement part and no attempt should be made to remove it.  
Should the solar collector require replacement, contact your nearest Solahart Dealer.  
IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE,  
CALL YOUR NEAREST SOLAHART DEALER.  
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INSTALLATION – SOLAR STORAGE TANK  
THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING.  
The system can be installed with Solahart ‘L’ solar collectors.  
Although the system has a level of freeze protection, designed to guard the system from unexpected  
frost conditions, the system is not recommended for installation in areas subject to frost or freeze  
conditions. Freeze conditions occur below 6°C. The solar hot and solar cold pipes must be fully  
insulated with closed cell polymer insulation (minimum thickness 13 mm) to offer protection against  
freeze damage. The system has NO WARRANTY for freeze damage (refer to “Warranty Exclusions” on  
page 37). Thicker insulation may be required to comply with the requirements of AS/NZS 3500.4.  
SOLAR WATER HEATER STORAGE TANK LOCATION  
The solar storage tank is suitable for either outdoor or indoor installation. Whether located outdoor or  
indoor, 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 the maximum length of the solar hot and solar cold pipes between  
the solar storage tank and the solar collectors. Refer to “Solar Collector Location” on page 26 and to  
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 cover, 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 length so the anode can be inspected or  
replaced. Remember you may have to remove the  
entire solar storage tank later for servicing.  
The installation must comply with the requirements  
of AS/NZS 3500.4, AS/NZS 3000 and all local codes  
and regulatory authority requirements. In New  
Zealand, the installation must conform with the New  
Zealand Building Code.  
It is recommended the solar storage tank be installed at ground or floor level and must stand vertically  
upright. Remember all local authorities have regulations about putting water heaters into roof spaces.  
SAFE TRAY  
It is a requirement of AS/NZS 3500.4 that for a new  
installation, a water heater be installed in a safe tray  
where in the event of a leak, property may otherwise  
be damaged. Construction, installation and draining  
of a safe tray must comply with the above mentioned  
Standard.  
17  
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INSTALLATION – SOLAR STORAGE TANK  
MAINS WATER SUPPLY  
Where the mains water supply pressure exceeds that shown in the table, an approved pressure limiting  
valve is required and should be fitted as shown in the installation diagram (refer to diagram on  
Model  
270, 340, 430  
1000 kPa  
Relief valve setting  
Expansion control valve setting *  
Max. mains supply pressure  
With expansion control valve  
Without expansion control valve  
Min. mains supply pressure  
850 kPa  
680 kPa  
800 kPa  
200 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, then a pressure pump system is  
recommended to ensure a minimum water pressure of 200 kPa is achieved to allow the solar circuit  
system to operate. Take care to avoid air locks.  
18  
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INSTALLATION – SOLAR STORAGE TANK  
HOT WATER DELIVERY  
This water heater can deliver water at temperatures which can cause scalding.  
It is necessary and we recommend that a temperature limiting device be fitted between the water heater  
and the hot water outlets in any ablution area such as a bathroom or ensuite, to reduce the risk of  
scalding. The installing plumber may have a legal obligation to ensure the installation of this water  
heater meets the delivery water temperature requirements of AS/NZS 3500.4 so that scalding water  
temperatures are not delivered to a bathroom, ensuite or other ablution area.  
Where a temperature limiting device is installed adjacent to the solar water heater, the cold water line to  
the temperature limiting device can be branched off the cold water line either before or after the  
isolation valve and pressure limiting valve to the solar storage tank, but it MUST BE before the non  
return valve. If an expansion control valve is required, it must always be installed after the non return  
valve and be the last valve prior to the solar storage tank.  
Warning: 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.  
If a combination isolation valve and non return valve (duo or trio valve) is installed on the cold water line  
to the solar water heater and the cold water line to the temperature limiting device branches off after  
this valve, then a second non return valve must be installed between the cold water branch and the  
solar storage tank.  
If a pressure limiting valve is installed on the cold water line to the solar water heater and the cold water  
line to a temperature limiting device branches off before this valve or from another cold water line in the  
premises, then a pressure limiting valve of an equal pressure setting may be required prior to the  
temperature limiting device.  
Two Temperature Zones Using a Temperature Limiting Device  
19  
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INSTALLATION – SOLAR STORAGE TANK  
CIRCULATED HOT WATER FLOW AND RETURN SYSTEM  
A solar water heater should not be installed as part of a circulated hot water flow and return system in a  
building. The benefits of solar gain will be significantly reduced and energy gained from the sun lost  
through the pipe work.  
If a circulated flow and return system is required, it is necessary to bypass the solar water heater and  
install a secondary water heater connected to the hot water flow and return line and supplied from the  
solar water heater. The secondary water heater must be a storage water heater able to provide a hot  
water outlet temperature of at least 60°C. Note: The thermostat must always be set to at least 60°C.  
Refer to the diagram on page 20.  
Temperature Limiting Device  
A temperature limiting device cannot be installed in circulated hot water flow and return pipe work. The  
tempered water from a temperature limiting device cannot be circulated. Where a circulated hot water  
flow and return system is required in a building, a temperature limiting device can only be installed on a  
dead leg, branching off the circulated hot water flow and return pipe.  
If circulated tempered water were to be returned back to the water heater, depending on the location of  
the return line connection on the water supply line to the water heater, then either:  
water will be supplied to the cold water inlet of the temperature limiting device at a temperature  
exceeding the maximum recommended water supply temperature, or  
when the hot taps are closed no water will be supplied to the cold water inlet of the temperature  
limiting device whilst hot water will continue to be supplied to the hot water inlet of the temperature  
limiting device.  
These conditions may result in either water at a temperature exceeding the requirements of  
AS/NZS 3500.4 being delivered to the hot water outlets in the ablution areas, or the device closing  
completely and not delivering water at all, or the device failing. Under either condition, the operation  
and performance of the device cannot be guaranteed.  
Circulated Hot Water Flow and Return System – Solar Water Heater  
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INSTALLATION – SOLAR STORAGE TANK  
REDUCING HEAT LOSSES  
The cold water line to and the hot water line from the water heater must be insulated in accordance with  
the requirements of AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if exposed.  
The pipe work between the solar storage tank and the solar collectors must be fully insulated with  
closed cell polymer insulation or similar (minimum thickness 13 mm). Thicker insulation may be  
required to comply with the requirements of AS/NZS 3500.4. The insulation must be weatherproof and  
UV resistant if exposed. The insulation must be fitted up to the connections on both the solar storage  
tank and the solar collectors.  
ANODE TYPES  
The correct anode type for the water supply being used must be fitted in the water heater (refer to  
“Water Supplies” on page 36). The black anode is fitted as standard.  
Total Dissolved Solids in water supply to the water heater  
Anode colour code  
0 – 40 mg/L  
40 – 600 mg/L  
600 – 2500 mg/L  
Green  
Black  
Blue  
SADDLING - PIPE WORK  
To prevent damage to the cylinder when attaching pipe clips or saddles to the water heater jacket, we  
recommend the use of self-drilling screws with a maximum length of 12 mm. Should pre drilling be  
required, extreme caution must be observed when penetrating the jacket of the water heater.  
Note: Damage to the cylinder as a result of saddling to the jacket will void the warranty.  
BOOSTER HEATING UNIT  
The booster heating unit provides hot water during periods of low solar gain. This can be connected to  
either an Off-Peak (overnight), Extended Off-Peak (overnight and day) electricity supply or a continuous  
electricity supply. Boosting can be controlled via a user operated manual switch. Refer to “Manual  
Controls” on page 31.  
If this water heater is installed as a solar preheater to an in-series water heater, then the booster  
heating unit does not need to be connected to a power supply.  
21  
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INSTALLATION – SOLAR STORAGE TANK  
DIMENSIONS AND TECHNICAL DATA  
Tank Mass (kg)  
Model  
Capacity  
Empty  
Full  
340  
412  
521  
270 SLV  
340 SLV  
430 SLV  
270 litres  
325 litres  
410 litres  
70  
87  
111  
Dimensions (mm)  
270 SLV  
A
B
C
D
E
F
H
J
N
1395  
1640  
1840  
640  
640  
690  
680  
680  
730  
1117  
1357  
1519  
73  
73  
81  
556  
623  
533  
499  
561  
417  
32°  
32°  
30°  
88°  
88°  
82°  
340 SLV  
430 SLV  
Specifications are subject to change with ongoing product improvements.  
22  
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INSTALLATION – SOLAR STORAGE TANK  
TYPICAL INSTALLATION – OUTDOOR LOCATION  
TYPICAL INSTALLATION – INDOOR LOCATION  
23  
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INSTALLATION – SOLAR CONTROL UNIT  
The solar control unit is designed to be mounted on the side of the solar storage tank, with its location  
in between and offset from the cold water inlet and solar hot water inlet. The solar control unit, supplied  
with a 1.8 metre power cord, requires a 240 V general power outlet (GPO) located within 1.2 metres of  
its installation. The GPO must have a continuous power supply originating from a circuit other than the  
water heater circuit. The GPO is required to be weatherproof if installed outdoors (refer to “Connections  
Note: Care must be taken when mounting the solar control unit to the side of the solar storage tank.  
Damage to the cylinder as a result of mounting the solar control unit to the jacket will void the warranty  
(refer to “Saddling - Pipe Work” on page 21).  
SOLAR STORAGE TANK WITH RAISED SOLAR HOT INLET  
To connect the solar cold pipe and mount the solar control unit on a Streamline storage tank with a  
raised solar hot inlet (and raised heating unit):  
Assemble a ½” x ½” hex nipple (1) into the branch outlet of the 4 way tee (2) (ensure the  
compression end of the nipple is exposed) and the ½” x ¾” hex nipple (3) in the end of the 4 way  
tee, so that when the assembly is fitted to the cold water inlet of the solar storage tank, the  
compression nipple (1) is orientated vertically upwards and the cold sensor housing is orientated to  
the rear of the solar storage tank. Fit the assembly to the cold water inlet of the solar storage tank.  
Connect the DN15 preformed pipe (4) to the branch tee connection, using the compression nut (5)  
and olive (6) provided.  
Fit a ½” x ½” hex nipple (1) to the outlet of the circulator (7) mounted in the solar control unit (8)  
(ensure the compression end of the nipple is exposed).  
Locate the solar control unit (8) by connecting the DN15 preformed pipe (4) to the nipple on the  
inlet of the circulator (7) using the compression nut (5) and olive (6) provided.  
Secure the solar control unit (8) to the solar storage tank using the four screws (9) provided.  
Connect the solar cold pipe (to the collector) to the nipple (1) on the outlet side of the circulator (7)  
using the compression nut (5) and olive (6) provided.  
Insert the cold sensor probe (10) into the cold sensor housing on the 4 way tee (2), ensuring the  
‘O’ ring is in position on the probe. Lock it into position with the locking washer and clip provided.  
Connect the hot sensor lead (from the solar collector installation) to the hot sensor cable connector  
at the underside of the solar control unit (8).  
Insulate the preformed pipe (4) with the 280 mm long x 12 mm diam insulation (12) and secure with  
the cable ties (14) provided.  
To connect the solar hot pipe to the solar storage tank:  
Fit the air bleed valve and non return valve assembly (11) to the solar hot water inlet of the solar  
storage tank. Ensure the bleed valve outlet is pointing downwards at 45° to the rear of the solar  
storage tank, away from the solar control unit (8).  
Connect a copper drain line to the bleed valve (refer to “Bleed Valve Drain” on page 30), using the  
compression nut and olive provided.  
Fit a ½” x ½” hex nipple (1) to the end (inlet) of the air bleed valve and non return valve  
assembly (11) (ensure the compression end of the nipple is exposed).  
Connect the solar hot pipe (from the collector) to the nipple (1) on the air bleed valve and non  
return valve assembly (11) using the compression nut (5) and olive (6) provided.  
24  
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INSTALLATION – SOLAR CONTROL UNIT  
Insulate the air bleed valve and non return valve assembly (11), from the solar hot pipe to the solar  
hot water inlet of the solar storage tank, with the 150 mm long x 35 mm diam insulation (13) and  
secure with the cable ties (14) provided.  
Note: Use thread sealing tape or an approved thread sealant on all fittings.  
to solar  
collectors  
from solar  
collectors  
assembly details of solar  
hot and solar cold pipe  
connections  
Solar Storage Tank with Solar Control Unit  
SUPPLIED IN SOLAR  
CONTROL UNIT KIT  
1.  
2.  
3.  
4.  
5.  
6.  
7.  
8.  
9.  
Hex nipple ½” X ½”  
4 way tee  
Hex nipple ½” x ¾”  
Preformed pipe DN15  
Compression nut  
Olive  
Circulator  
Solar control unit  
Screws  
10. Cold sensor probe  
11. Air bleed valve and non  
return valve assembly  
12. Insulation 280 mm long x  
12 mm diam  
13. Insulation 150 mm long x  
35 mm diam  
14. Cable tie  
25  
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INSTALLATION – SOLAR COLLECTORS  
SOLAR COLLECTOR LOCATION  
Consideration must be given to the position of the solar collectors in relation to the solar storage tank.  
There are limitations on the maximum length of the solar hot and solar cold pipes between the solar  
storage tank and the solar collectors. Refer to “Solar Storage Tank Location” on page 17 and to “Pipe  
Lengths” on page 27.  
The solar collectors must be installed in a shade free position.  
The solar collectors are to be installed facing toward  
the equator (i.e. north facing in the southern  
hemisphere and south facing in the northern  
hemisphere). Where this orientation is not practical, a  
system facing up to 45° from the equator will have its  
efficiency reduced by approximately 5%.  
Inclination of the solar collectors should be  
approximately equal to 90% of the local latitude  
listed on page 26. Solar collectors may be installed at  
the roof angle for simplicity of installation and  
appearance, but must never be flat. If the roof angle  
varies by 15° from the correct angle, efficiency will be  
reduced by 10%.  
For an installation on a roof with a pitch less than 10°,  
a Variable Pitch stand is required. Refer to your local  
Solar Distributor for details.  
For an installation at right angles to (across) the roof pitch, a Flat Roof stand and an Across Pitch  
kit are both required. Refer to your local Solar Distributor for details.  
For an installation opposite to (against) the roof pitch, a Flat Roof stand and an Against Pitch kit are  
both required. Refer to your local Solar Distributor for details.  
The collector kit is suitable for installations with an inclination of up to 45°. Where the solar  
collectors are installed at inclinations greater than 45°, special roof fixings may be necessary. Refer  
to your local Solar Distributor for details.  
The roof must be suitable to take the mass of the solar collectors. Each solar collector and its  
fittings weighs approximately 40 kg when full of water.  
The installation must comply with the requirements of AS/NZS 3500.4 and all local codes and  
regulatory authority requirements.  
Refer to the installation instructions supplied with the collector kit for details on the installation of  
the solar collectors.  
LATITUDE OF SOME AUSTRALIAN CITIES  
Adelaide  
Cairns  
Hobart  
Port Hedland  
Rockhampton  
Sydney  
35°S  
24°S  
27°S  
31°S  
17°S  
35°S  
12°S  
28°S  
42°S  
34°S  
38°S  
32°S  
20°S  
24°S  
34°S  
19°S  
Alice Springs  
Brisbane  
Canberra  
Darwin  
Mildura  
Melbourne  
Perth  
Broken Hill  
Geraldton  
Townsville  
26  
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INSTALLATION – SOLAR COLLECTORS  
PIPE LENGTHS  
The maximum recommended combined length of the solar cold and solar hot pipes with bends is:  
Maximum recommended total pipe length and number of 90° bends  
1 or 2 Collectors  
3 Collectors  
4 Collectors  
Pipe Size  
Pipe Length  
Pipe Length  
Pipe Length  
90° Bends  
90° Bends  
90° Bends  
DN15  
DN20  
40 metres  
NR  
20  
30 metres  
40 metres  
20  
20  
15 metres  
40 metres  
20  
20  
NR  
For each additional 90° bend, reduce the maximum total pipe length by 0.5 metres.  
For each additional metre of pipe length, reduce the number of 90° bends by two.  
Note: One 90° elbow is equal to two 90° bends.  
NR – not recommended.  
The solar hot and solar cold pipes between the solar storage tank and the solar collectors should be a  
minimum DN15.  
Maximum height to collectors  
The maximum height of a solar Streamline installation, from the solar controller (circulator) to the top of  
the solar collectors, is determined by the maximum recommended total pipe length for the system and  
the water supply pressure.  
The maximum recommended total pipe length of the solar circuit should not be exceeded and a  
minimum water supply pressure of 200 kPa should be available at the inlet to the system, otherwise the  
system performance may be reduced or the solar circuit may not be purged of air during the  
commissioning of the system.  
WARNING: Plumber – Be Aware  
The solar hot and solar cold pipes between the solar storage tank and the solar collectors  
MUST BE of copper and fully insulated with closed cell polymer insulation or similar (minimum  
thickness 13 mm). Thicker insulation may be required to comply with the requirements of  
AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if exposed. All  
compression fittings must use brass or copper olives.  
Note: Failure to observe this requirement increases the risk of freeze damage.  
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 and also reduce pipe heat losses.  
The insulation must be fitted up to the connections on both the solar collectors and the  
solar storage tank, as very high temperature water can flow from the solar collectors to the  
solar storage tank under certain conditions.  
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.  
There must be a continuous fall in the pipe work between the solar collectors and solar  
storage tank. The highest point of the solar cold pipe and solar hot pipe must be where they  
connect to the solar collectors, to avoid the possibility of air locks occurring in the system.  
27  
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CONNECTIONS – PLUMBING  
CONNECTION SIZES  
Hot water connection: RP¾/20.  
Cold water connection: RP½/15.  
(cold water inlet to tank: RP¾/20).  
Solar hot (from collector) connection: DN15 compression fitting.  
(solar hot inlet to tank: RP¾/20).  
Solar cold (to collector) connection: DN15 compression fitting.  
Relief valve connection: RP½/15.  
Bleed valve connection: G1.0B.  
All plumbing work must be carried out by a qualified person and in accordance with the National  
Plumbing Code AS/NZS 3500.4 and local authority requirements.  
Note: The solar water heater should not be installed as part of a circulated hot water flow and return  
system in a building. The benefits of solar gain will be significantly reduced and energy gained from the  
sun lost through the pipe work. If a circulated flow and return system is required, it is necessary to  
bypass the solar water heater and install a secondary water heater supplied from the solar water heater  
and connected to the hot water flow and return line.  
WATER INLET AND OUTLET  
All pipe work must be cleared of foreign matter before connection and purged before attempting to  
operate the water heater. All olive compression fittings must use brass or copper olives. Use thread  
sealing tape or approved thread sealant on all fittings.  
An isolation valve and non return valve must be installed on the cold water line to the water heater. Use  
the arrangement shown in the diagram. Refer also to “Hot Water Delivery” on page 19.  
OR  
The plumbing arrangements for the cold water inlet and solar hot and solar cold pipes are shown on  
page 25.  
A disconnection union must always be provided at the cold water inlet, solar hot water inlet and hot  
water outlet on the water heater to allow for disconnection of the water heater.  
28  
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CONNECTIONS – PLUMBING  
This water heater has either a plastic dip tube or fitting  
liner in the inlet and outlet fittings (see diagram). These  
must be in place for the water heater to function properly.  
Do not remove or damage them by using heat nearby.  
They will be pushed into the correct position as the fitting  
is screwed in.  
PIPE SIZES  
To achieve true mains pressure operation, the cold water line to the water heater should be the same  
size or bigger than the hot water line from the water heater.  
The pipe sizing for hot water supply systems should be carried out by persons competent to do so,  
choosing the most suitable pipe size for each individual application. Reference to the technical  
specifications of the water heater and local regulatory authority requirements must be made.  
IN-SERIES WATER HEATER (IF INSTALLED)  
The pipe work between the solar storage tank and an in-series water heater has a minimum  
recommended pipe size of DN20, MUST BE of copper and be fully insulated in accordance with the  
requirements of AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if exposed. The  
insulation must be fitted up to the connections on both the solar storage tank and the in-series water  
heater. An isolation valve must be installed on the water line to the in-series water heater.  
RELIEF VALVE  
The temperature pressure relief valve is shipped either under the top flap of the water heater carton or  
behind the front cover. The temperature pressure relief valve must be fitted before the water heater is  
operated. Before fitting the relief valve, make sure the probe has not been bent. Seal the thread with  
Teflon tape - never hemp. Make sure the tape does not hang over the end of the thread.  
RELIEF VALVE DRAIN  
A copper drain line must be fitted to the relief valve to carry the discharge clear of the water heater.  
Connect the drain line to the relief valve using a disconnection union. The pipe work from the relief  
valve to the drain should be as short as possible and fall all the way from the water heater with no  
restrictions. It should have no more than three right angle bends in it. Use DN15 pipe. The outlet of the  
drain line must be in such a position that flow out of the pipe can be easily seen (refer to  
AS/NZS 3500.4) - but arranged so hot water discharge will not cause injury, damage or nuisance. The  
drain line must discharge at an outlet or air break not more than 9 metres from the relief valve.  
In locations where water pipes are prone to freezing, the drain line must be insulated and not exceed  
300 mm in length. In this instance, the drain line is to discharge into a tundish through an air gap of  
between 75 mm and 150 mm.  
Warning: As the function of the temperature pressure relief valve on this water heater is to  
discharge high temperature water under certain conditions, it is strongly recommended the pipe work  
downstream of the relief valve be capable of carrying water exceeding 93°C. Failure to observe this  
precaution may result in damage to pipe work and property.  
29  
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CONNECTIONS – PLUMBING  
BLEED VALVE DRAIN  
A copper drain line must be fitted to the bleed valve to carry the discharge clear of the water heater and  
solar controls. Connect the drain line to the bleed valve using a disconnection union. The pipe work  
from the bleed valve to the drain should be as short as possible and fall all the way from the valve with  
no restrictions. It should have no more than three right angle bends in it. Use DN15 pipe.  
The outlet of the drain line must be in such a position that flow out of the pipe can be easily seen (refer  
to AS/NZS 3500.4) - but arranged so water discharge will not cause injury, damage, nuisance or  
splashing. The water discharged may be of a high temperature under certain conditions. The drain line  
must be fully insulated with closed cell polymer insulation or similar (minimum thickness 13 mm). The  
insulation must be weatherproof and UV resistant if exposed.  
EXPANSION CONTROL VALVE  
Local regulations may make it mandatory to install an expansion control valve (ECV) in the cold water  
line to the water heater. In other areas, an ECV is not required unless the saturation index is greater  
than +0.4 (refer to “Water Supplies” on page 36). However, an ECV may be needed in a corrosive  
water area where there are sufficient quantities of silica dissolved in the water.  
The expansion control valve must always be installed after the non return valve and be the last valve  
30  
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CONNECTIONS – ELECTRICAL  
The power supply to the water heater must not be switched on until the water heater is filled  
with water and a satisfactory megger reading is obtained.  
All electrical work and permanent wiring must be carried out by a qualified person and in accordance  
with the Wiring Rules AS/NZS 3000 and local authority requirements.  
If this water heater is installed as a solar preheater to an in-series water heater, then the booster  
heating unit does not need to be connected to a power supply and the references to the booster heating  
unit, thermostat and manual controls are not applicable.  
SOLAR STORAGE TANK  
The solar storage tank with an electric booster heating unit must be directly connected to a  
240 V AC 50 Hz mains power supply with an isolating switch installed at the switchboard.  
The power supply can be either an Off-Peak (overnight), an Extended Off-Peak (overnight and day) or  
a continuous electricity supply. An Off-Peak (overnight) power supply will provide the maximum  
financial savings. Discuss the power supply requirements with the householder.  
A flexible 20 mm conduit is required for the electrical cable to the solar storage tank. The conduit is to  
be connected to the unit with a 20 mm terminator. Connect the power supply wires directly to the  
terminal block and earth tab connection, ensuring there are no excess wire loops inside the front cover.  
THERMOSTAT SETTING  
The thermostat is adjustable from 60°C to 70°C. The thermostat is adjusted by turning the adjuster  
anticlockwise to decrease the temperature setting and clockwise to increase the temperature setting.  
Only adjust the temperature setting when the isolating switch is switched off at the switchboard.  
For reasons of safety and economy, we advise the thermostat be set at the lowest temperature that will  
provide sufficient hot water during periods when boosting is required. Solahart recommends the  
thermostat is set at 60°C to maximise solar contribution. Discuss the thermostat setting requirements  
with the householder.  
SOLAR CONTROL UNIT  
The solar control unit, supplied with a 1.8 metre power cord, requires a switched 240 V AC 50 Hz  
general purpose outlet (GPO) to be located within 1.2 metres of the installation. The GPO must have a  
continuous power supply originating from a circuit other than the water heater circuit. The GPO is  
required to be weatherproof if installed outdoors.  
MANUAL CONTROLS  
Solahart recommends an additional manual isolating switch be installed in the power supply circuit to  
the solar storage tank. This booster switch is to be installed in a convenient location such as the kitchen  
or laundry and will enable the householder to control the electrical boosting during periods of poor solar  
gain.  
A suitably rated single-pole on / off switch should be used to control a booster heating unit connected to  
an Off-Peak electricity supply. A booster heating unit connected to a continuous electricity supply  
should be controlled by either a suitably rated single pole on / off switch or “One Shot Control” switch.  
Refer to the manufacturer’s instructions supplied with the switch for installation details. Discuss the  
manual switching arrangements with the householder.  
31  
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CONNECTIONS – ELECTRICAL  
BOOSTER SWITCH WIRING DIAGRAM  
Electrical installation of the solar storage  
tank without a manual boosting switch  
Electrical installation of the solar storage  
tank with a manual boosting switch  
32  
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COMMISSIONING  
TO FILL AND TURN ON THE WATER HEATER  
The power supply to the solar storage tank and solar control unit must not be switched on until  
the water heater is filled with water and a satisfactory megger reading is obtained.  
Open all of the hot water taps in the house (don’t forget the shower).  
Open the cold water isolation valve fully on the cold water line to the water heater. Air will be forced  
out of the taps.  
Close each tap as water flows freely from it. Check the pipe work for leaks.  
Bleed the solar collectors (refer to “Bleeding the Solar Collectors” on page 33).  
Plug in the solar control unit at the power outlet and switch on the electrical supply. 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.  
Explain to the householder the functions and operation of the solar water heater. Upon completion of  
the installation and commissioning of the water heater, leave this guide with the householder.  
BLEEDING THE SOLAR COLLECTORS  
Upon completion of the installation, it is necessary to purge the air from the collector circuit. 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 fitted  
adjacent to the solar hot water inlet of the solar storage tank  
(see diagram).  
air bleed  
valve  
The mains pressure will force water to flow from the tank  
and through the pipe work, forcing 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: Exercise care to avoid any splashing of water,  
as water 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 it is necessary to turn off the water heater on completion of the installation, such as on a building site  
or where the premises is vacant, then:  
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.  
Note: The freeze protection system will be rendered inoperable if electrical power is not available. The  
system has NO WARRANTY for freeze damage (refer to “Warranty Exclusions” on page 37). If there is  
a risk of freezing, then it is necessary to drain the solar collectors and connecting pipe work (refer to  
33  
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DRAINING THE SOLAR COLLECTORS  
To drain the solar collectors and the solar hot and solar cold pipe:  
Open a hot water tap and allow the water to run for five minutes immediately prior to draining the  
solar collector(s).  
This will assist in the transfer of any high temperature water in the solar collector(s) to the solar  
storage tank.  
Close the hot water tap.  
Warning: Exercise care, as water discharged from the solar collectors may be of a very high  
temperature.  
Turn off the water heater (refer to “To Turn Off The Water Heater” on page 33).  
Using a flat bladed screw driver, open the bleed valve fitted adjacent to the solar hot water inlet of  
the solar storage tank (refer to diagram on page 33).  
Undo the compression fitting at the top of the circulator (located at the side of the solar control unit)  
and disconnect the solar cold pipe.  
Water will now drain from the solar collectors and the solar hot and solar cold pipes.  
When water stops flowing from the solar hot and solar cold pipes, reconnect the solar cold pipe to  
the circulator and tighten the compression fitting.  
Close the bleed valve.  
34  
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DRAINING THE WATER HEATER  
To drain the water heater:  
Open a hot water tap and allow the water to run for five minutes immediately prior to draining the  
solar storage tank.  
This will assist in the transfer of any high temperature water in the solar collector(s) to the solar  
storage tank.  
Close the hot water tap.  
Warning: Exercise care, as water discharged from the solar storage tank may be of a very high  
temperature.  
Turn off the water heater (refer to “To Turn Off The Water Heater” on page 33).  
Operate the relief valve release lever - do not let the lever snap back or you will damage the valve  
seat.  
Operating the lever will release the pressure in the water heater.  
Undo the union at the cold water inlet to the 4 way tee and attach a hose.  
Let the other end of the hose go to a drain.  
Operate the relief valve again.  
This will let air into the water heater and allow the water to drain through the hose.  
35  
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WATER SUPPLIES  
Your water heater is manufactured to suit the water conditions of most Australian metropolitan supplies.  
However, there are some known water supplies which can have detrimental effects on the water heater  
and its operation and/or life expectancy. If you are unsure of your water quality, you can obtain  
information from your local water supply authority. The water heater should only be connected to a  
potable water supply.  
ANODE  
By using the correct colour coded anode this water heater can be used in areas where the total  
dissolved solids (TDS) content in the water is up to 2500 mg/L. In areas where the TDS exceeds  
600 mg/L it is possible the black anode, which is the standard anode fitted to the water heater, may be  
excessively active. To alleviate this, the black anode should be replaced with one colour coded blue.  
Where the TDS of the water is less than 40 mg/L, such as when the water has been deionised or is  
from an alpine supply, a high potential anode, colour coded green, should be used. The changing of  
anodes must be carried out by a plumber or authorised service person.  
CAUTION  
If your water supply has a TDS greater than 600 mg/L and the anode has not been changed to a blue  
one, there is the possibility hydrogen gas could accumulate in the top of the water heater during long  
periods of no use. In areas where this is likely to occur, the installer should instruct the householder on  
how to dissipate the gas safely.  
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 again, 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 corrosive and a corrosion resistant heating unit should be used and  
warranty does not apply to a solar collector.  
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 scaling and an expansion control valve* must  
be fitted on the cold water line after the non-return valve and the solar collectors 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, a low watts density heating unit should be used and warranty does not apply to a solar  
collector unless a water softening device is installed.  
Contact your nearest Solahart Dealer if a replacement heating unit is required.  
WATER HEATERS NOT INSTALLED IN ACCORDANCE WITH THE ABOVE ADVICE WILL NOT BE  
COVERED BY THE WARRANTY.  
36  
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SOLAHART STREAMLINE, SYNERGY, GAS BOOSTER  
SOLAR WATER HEATER WARRANTY – AUSTRALIA ONLY  
WARRANTY CONDITIONS  
1. This warranty is applicable only to water heaters manufactured  
from 1st July 2006.  
between the nearest Solahart Dealer’s premises and the  
installed site shall be the owner’s responsibility.  
2. The water heater must be installed in accordance with the 5. Where the water heater is installed in a position that does not  
Solahart water heater installation instructions, supplied with the  
water heater, and in accordance with all relevant statutory and  
local requirements of the State in which the water heater is  
installed.  
allow safe, ready access, the cost of accessing the site safely,  
including the cost of additional materials handling and / or safety  
equipment, shall be the owner’s responsibility.  
6. The warranty only applies to the water heater and original or  
genuine (company) component replacement parts and therefore  
does not cover any plumbing or electrical parts supplied by the  
installer and not an integral part of the water heater, e.g.  
pressure limiting valve; isolation valves; non-return valves;  
electrical switches; pumps or fuse.  
3. Where a failed component or water heater is replaced under  
warranty, the balance of the original warranty period will remain  
effective. The replaced part or water heater does not carry a new  
warranty.  
4. Where the water heater is installed outside the boundaries of a  
metropolitan area as defined by Solahart or further than 30 km 7. The water heater must be sized to supply the hot water demand  
from a regional Solahart Dealer from whom the water heater was  
purchased, the cost of transport, insurance and travelling costs  
in accordance with the guidelines in the Solahart water heater  
literature.  
WARRANTY EXCLUSIONS  
1. REPAIR AND REPLACEMENT WORK WILL BE CARRIED OUT AS SET OUT IN THE SOLAHART WATER HEATER  
WARRANTY, HOWEVER THE FOLLOWING EXCLUSIONS MAY CAUSE THE WATER HEATER WARRANTY TO  
BECOME VOID AND MAY INCUR A SERVICE CHARGE AND / OR COST OF PARTS.  
a) Accidental damage to the water heater or any component,  
including: Acts of God; failure due to misuse; incorrect  
installation; attempts to repair the water heater other than by the  
Solahart Dealer.  
or incorrectly mixed closed circuit fluid being used; a Streamline  
closed circuit system where there is insufficient or incorrect fall in  
the pipe work preventing complete drain back of the closed  
circuit fluid.  
b) Where it is found there is nothing wrong with the water heater; e) Where the electronic instantaneous gas booster water heater or  
where the complaint is related to excessive discharge from the  
temperature and / or pressure relief valve due to high water  
pressure; where the complaint is related to insufficient or  
incorrect fall in the pipe work preventing complete drain back of  
the closed circuit fluid of a Streamline closed circuit system;  
where there is no flow of hot water due to faulty plumbing; where  
water leaks are related to plumbing and not the water heater or  
water heater components; where there is a failure of gas,  
electronic instantaneous gas booster water heater component  
has failed directly or indirectly as a result of ice formation in the  
water ways of a water heater: where the water heater has not  
been installed in accordance with the water heater installation  
instructions; where the electricity has been switched off or has  
failed and the water heater has not been drained in accordance  
with the instructions; due to an ambient temperature below -  
20°C (including wind chill factor).  
electricity or water supplies; where the supply of gas, electricity f) Where the water heater is located in a position that does not  
or water does not comply with relevant codes or acts.  
comply with the Solahart water heater installation instructions or  
relevant statutory requirements, causing the need for major  
dismantling or removal of cupboards, doors or walls, or use of  
special equipment to bring the water heater to floor or ground  
level or to a serviceable position.  
c) Where the water heater or water heater component has failed  
directly or indirectly as a result of: excessive water pressure;  
excessive temperature and / or thermal input; blocked  
overflow / vent drain; corrosive atmosphere; non Solahart  
approved or incorrectly mixed closed circuit fluid being used; g) Repair and / or replacement of the water heater due to scale  
incorrect or insufficient filling of the closed circuit system with the  
closed circuit fluid; ice formation in the pipe work to or from the  
water heater.  
formation in the waterways or the effects of either corrosive  
water or water with a high chloride or low pH level when the  
water heater has been connected to a scaling or corrosive water  
supply or a water supply with a high chloride or low pH level as  
outlined in the Owner’s Guide and Installation Instructions  
booklet.  
d) Where the solar water heater or solar water heater component  
has failed directly or indirectly as a result of ice formation in the  
water ways of: a Streamline open circuit system; a Streamline  
closed circuit system where the system has not been installed in h) Breakage of collector glass for any reason including hail  
accordance with the water heater installation instructions; a  
Streamline closed circuit system due to non Solahart approved  
damage. (We suggest that the collector glass be covered by  
your home insurance policy).  
2. SUBJECT TO ANY STATUTORY PROVISIONS TO THE CONTRARY, THIS WARRANTY EXCLUDES ANY AND ALL  
CLAIMS FOR DAMAGE TO FURNITURE, CARPETS, WALLS, FOUNDATIONS OR ANY OTHER CONSEQUENTIAL  
LOSS EITHER DIRECTLY OR INDIRECTLY DUE TO LEAKAGE FROM THE WATER HEATER, OR DUE TO LEAKAGE  
FROM FITTINGS AND / OR PIPE WORK OF METAL, PLASTIC OR OTHER MATERIALS CAUSED BY WATER  
TEMPERATURE, WORKMANSHIP OR OTHER MODES OF FAILURE.  
37  
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SOLAHART STREAMLINE, SYNERGY, GAS BOOSTER  
SOLAR WATER HEATER WARRANTY – AUSTRALIA ONLY  
WARRANTY  
Solahart will:  
a) Repair or, if necessary replace any Solahart water heater; or  
b) Replace any component (or, if necessary, arrange the installation of a new water heater),  
which falls within the Warranty Periods specified below, subject to the warranty conditions and exclusions.  
Installation  
Model  
Period  
Warranty  
All Components (from date of installation)  
New component, solar collector or water heater (at  
Solahart’s sole discretion), free of charge, including  
labour.**  
Year  
1
All installations  
All models  
Sealed System *** (from date of installation)  
Water heater installed in a  
“single-family domestic dwelling”  
Year New sealed system component, free of charge, including  
Synergy  
2
labour.**  
Cylinder (from date of installation)  
Streamline,  
Streamline  
Closed Circuit,  
Synergy  
Years  
2 & 3  
New water heater, free of charge, including labour.**  
Water heater installed in a  
“single-family domestic dwelling”  
Years New water heater, free of charge, with installation and  
4 & 5 labour costs being the responsibility of the owner.  
Streamline,  
Streamline  
Closed Circuit,  
Synergy  
Water heater installed in any other  
than a  
“single-family domestic dwelling”  
Years New water heater, free of charge, with installation and  
2 & 3 labour costs being the responsibility of the owner.  
Heat Exchanger Electronic Instantaneous Gas Booster (from date of installation)  
Years  
2 & 3  
New heat exchanger, free of charge, including labour.**  
Water heater installed in a  
Streamline  
“single-family domestic dwelling”  
Closed Circuit  
Years New heat exchanger, free of charge, with installation and  
4 & 5 labour costs being the responsibility of the owner.  
Solar Collector (from date of installation)  
L
J
KF  
Water heater installed in a  
“single-family domestic dwelling”  
Years New solar collector, free of charge, with installation and  
2 to 5 labour costs being the responsibility of the owner.  
Notes:  
* Solahart is the supplier of Solahart electronic instantaneous solar gas booster water heaters, manufactured by Paloma  
Industries, a world leader in water heater technology and manufacture.  
** Refer to items 4 and 5 of warranty conditions.  
*** The Sealed System includes components that carry refrigerant only, e.g. Compressor, Condenser, TX Valve,  
Receiver/Drier, Evaporator and associated pipe work.  
Solahart reserves the right to transfer fully functional components from the defective water heater to the replacement water  
heater if required. The term “water heater” used in the Warranty, Warranty Conditions and Warranty Exclusions means the  
Solahart supplied water heater(s), solar storage tank(s), solar collector(s), kit(s) and components.  
In addition to this warranty, the Trade Practices Act 1974 and similar laws in each state and territory provide the owner under  
certain circumstances with certain minimum statutory rights in relation to your Solahart water heater. This warranty must be  
read subject to that legislation and nothing in this warranty has the effect of excluding, restricting or modifying those rights.  
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.  
38  
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SOLAHART INSTALLATION & WARRANTY REPORT  
Dear Customer – To register your warranty please ensure the following information is correct  
then sign and return to our Solahart Industries Pty Ltd freepost address:  
Solahart Industries Pty Ltd  
Reply Paid Perth 354  
Welshpool, Western Australia 6106  
WARRANTY  
Details and conditions of warranty are in the “Water Heater Warranty” section of this manual.  
Please complete all details below  
Owner’s Name  
Installation Address  
Suburb  
State  
Country  
Postcode  
Telephone  
Solahart Dealership  
(H)  
(W)  
Consultant  
Installer’s Name  
Installation Date  
Type of Installation  
(please circle)  
New  
Solar to Solar Tank Replacement  
Other  
Work Delivery Details  
System Model No  
Tank Model No  
System Type  
Tank Serial No  
No of Collectors  
Collector Model No  
Collector Serial No’s  
1)  
2)  
3)  
4)  
Booster Type  
Electric  
continuous  
Off Peak 1  
(night)  
Off Peak 2  
(night & day)  
In-Tank Gas  
Booster  
In-Line  
Booster  
Solar Preheat  
only  
(please circle)  
Booster Control  
None  
Timer  
Manual Switch  
One Shot Control  
(please circle)  
In-Line Booster  
Model No  
Serial No  
(if installed)  
Service’s Due  
1)  
2)  
3)  
4)  
If replacing a water heater, please give details  
Brand  
Model No  
Electric  
Gas  
If a Solahart unit  
Tank Serial No  
Date of manufacture  
3) 4)  
Collector Serial No’s  
1)  
2)  
Comments  
Installer Certification – I certify this installation has been installed and tested in accordance with Solahart Industries Pty Ltd specifications  
Signature:  
Date  
Installer  
Customer  
White Copy: Head Office  
Yellow Copy: Dealer  
Blue Copy: Sales Office  
Green Copy: Manual  
39  
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SOLAHART OFFICES  
International Headquarters  
Solahart Industries Pty Ltd  
(ABN 45 064 945 848)  
112 Pilbara St  
Welshpool  
Western Australia 6106  
International Sales  
Telephone International Sales:  
+ 61 8 9351 4600  
Facsimile International Sales:  
+ 61 8 9351 4698  
Email:  
Postal Address:  
PO Box 95  
Internet:  
State Parcel Centre  
Welshpool WA 6986  
International Offices  
Europe  
USA  
Phone International:  
Facsimile International:  
+ 31 492 579 696  
+ 31 492 579 694  
Phone International:  
+ 1 334 260 1586  
+ 1 334 260 1514  
Facsimile International:  
Australia  
For SERVICE Telephone - 1800 638 011  
For Sales Telephone - 1300 769 475  
or your nearest Solahart Dealer  
or your nearest Solahart Dealer  
Revision Date: 2006 August  
126518G  
40  
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