Solahart SOLAR WATER HEATERS User manual

OWNER’S MANUAL
SOLAR WATER HEATERS
Solahart Industries Pty Ltd
ABN 45 064 945 848

CONTENTS
Solahart Technology 1
Here's How It Works 2
Operating Hints 3
Facts You Should Know About Your Water Heater 4
Maintenance 5
Installation Instructions - All Models 8
Installation Instructions – Closed Circuit Series 10
Heat Dissipation Kit (Assembly and Installation) 12
Installation Instructions - L Series 12
Connection of Temperature Limiting Device 13
Technical Data 14
Installation Diagram - Model 151 Closed Circuit 16
Installation Diagram - Model 151L 17
Installation Diagram - Model 181 Closed Circuit 18
Installation Diagram - Model 181L 19
Installation Diagram - Model 182 Closed Circuit 20
Installation Diagram - Model 221 Closed Circuit 21
Installation Diagram - Model 301 Closed Circuit 22
Installation Diagram - Model 301L 23
Installation Diagram - Model 302 Closed Circuit 24
Installation Diagram - Model 302L 25
Installation Diagram - Model 303 Closed Circuit 26
Installation Diagram - Model 303L 27
Installation Diagram - Model 443 Closed Circuit 28
Installation Diagram - Model 443L 29
Closed Circuit Series Water Connections 30
L Series Water Connections 30
Combination Valve Assembly 31
Assembly Diagrams 1, 2 and 3 31
Assembly Diagrams 4 and 5 32
Warranty 33
33-1197 Revision A - September 2003

33-1197 Solahart Owner’s Manual – Thermosyphon Systems - Revision A – September 2003 1
WORLD'S LEADING TECHNOLOGY
Your Solahart is equipped with the latest technology in solar water heaters. The Closed Circuit
Series feature collectors that contain a special heat transfer fluid called ‘Hartgard’ which acts to
enhance the performance of your Solahart water heater. ‘Hartgard’ is a special food grade solution
and is the only solution permitted to be used in the closed circuit systems. Hartgard has been
approved by the National Health and Medical Research Council of Australia. Unlike water,
‘Hartgard’ fluid resists freezing, allowing Solahart to guarantee the Closed Circuit Series against
frost damage. Solahart water heaters are so effective that they can save you money anywhere in
the world. How much you save depends on local conditions and your hot water usage patterns.
The ‘L’ Series uses a direct heating collector, incorporating state-of-the-art manufacturing
technology to ensure the same quality and finish as the Closed Circuit Series.
It is important that your Solahart representative recommends the correct water heater for your
local conditions and your family's needs.
WARNING: Your Solahart Closed Circuit Systems are protected by our exclusive ‘Hartgard’
fluid. The fluid is contained in the solar panels and the heat exchanger jacket around the main
cylinder. Although the fluid is of food grade quality, it is important that it is not ingested. As with
all water heaters, we recommend that you do not drink or cook with the hot water from your
Solahart heater.

2 33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003
HERE'S HOW IT WORKS
The Solahart Closed Circuit Series uses a heat exchanger that operates under the Natural Thermosyphon Principle. The ‘L’
Series uses a direct heating method that relies upon the same Thermosyphon Principle, but circulates potable water through
the collectors.
The Solahart collectors absorb solar energy. The tempered, low-iron, solar glass allows more radiation to pass through and be
retained than other traditional float glass systems.
In the Closed Circuit Series, heat is absorbed by the collector and passed
to the ‘Hartgard’ heat transfer liquid inside the collector. As the
temperature of the ‘Hartgard’ increases, the hot fluid rises up through the
collector by the Natural Thermosyphon Principle, into the heat exchanger
jacket around the potable water storage tank. Here, the heat is transferred
to the potable water, cooling the ‘Hartgard’ solution.
The cooler solution is then forced back down into the collectors through
the displacement action of the hot solution rising up into the heat
exchanger jacket.
Diagram of Closed Circuit Series
The cooler solution is again heated in the collectors and
rises back up to pass the heat to the potable water in the
storage tank. This process repeats until all water in the
storage tank is heated.
‘L’ Series Closed Circuit
Series
For the ‘L’ Series, heat is collected directly by the potable water circulating through
the collector. As the potable water heats up, it rises by the Natural Thermosyphon
Principle, directly to the storage tank. As the heated potable water travels through to
the storage tank, the cooler potable water returns to the collectors. This process
repeats until all water in the storage tank is heated.
Diagram of L Series

33-1197 Solahart Owner’s Manual – Thermosyphon Systems - Revision A – September 2003 3
OPERATING HINTS
The overall performance and power cost savings that you will obtain from your Solahart water heater will depend on your hot
water usage pattern and the usage of your electric or gas booster.
With a two panel, 300 litre Solahart hot water heater, on a clear winter day, the collectors can raise the tank temperature to
approximately twice the daily maximum temperature. For example on a clear 15ºC day the tank temperature can reach
approximately 30ºC. The supplementary booster should then be used to raise the water temperature to at least 60°C before the
water is used.
During winter and cooler or cloudy weather we suggest that you turn your booster switch ON to ensure that hot water is
always available.
The booster switch should be placed in a convenient location, eg. the laundry or kitchen. Alternatively a time clock can be
fitted to turn the booster ON at pre-determined times. This method can increase energy savings.
Energy savings are maximised by operating the electric or gas booster as infrequently as possible.
The following hints are provided to assist you in selecting the best pattern of hot water usage for your solar water heater.
1) Solar energy input is greater on sunny days between 10am, and 3pm. If possible, schedule your heavy washing or
laundry for as close as possible to the middle of the day.
2) Keep trees in the sun's path at a level where the collectors are not shaded at any time during periods of effective solar
radiation.
Off Peak Power
If your Solahart water heater is connected to an ‘Off Peak’ (night rate) electrical supply, it is important to remember that the
booster may only operate late at night. On cloudy days the tank may only gain a small amount of energy during the day.
Careful planning will be required to avoid running out of hot water if large quantities are drawn during the day.
In areas where a ‘Day Rate’ electrical switch is permitted, the storage tank can be boosted manually to ensure hot water is
available at the end of the day.
Over-Night Temperature Stabilisation
Over-night temperature stabilisation is the reduction in water temperature, as the hot water at the top of the storage cylinder
transfers some of its heat to the cooler water in the lower section of the cylinder. This effect is often perceived as heat loss,
but is actually the redistribution of stored heat more evenly over the entire contents of the storage tank. This may make it
necessary to use the booster to raise the water in the top section of the cylinder back to an acceptable temperature.
Over-night temperature stabilisation is most evident in the morning if the booster switch or time clock is left OFF over-night.
Using Your Solahart Heater as a Pre-Heater
Your Solahart can be used as a pre-heater to an existing heater provided that:
1) The power supply to the heater is disconnected.
2) The existing water heater is thermostatically controlled not flow controlled.
3) For flow controlled water heaters the heater can act as a supplementary heat source only, not as a pre-heater, and the
heater can be connected in a parallel circuit only, via a changeover valve(s).
4) The operating pressures of the two heaters are compatible or reduced to the lower of the two heaters.
5) The existing heater has sufficient thermal capacity in its own right to supply normal water requirements and is complete
with its own controls and valves and these are not interfered with.

4 33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003
FACTS YOU SHOULD KNOW
ABOUT YOUR SOLAHART WATER HEATER
Hot Hot Water!
Your Solahart water heater will generate hot water quickly and efficiently. Under normal family use, it will operate between
60ºC and 70ºC. However, the temperature can exceed this and under certain circumstances may be as high as 95ºC. This can
occur during prolonged periods of direct sunlight and particularly in summer or long periods of reduced water usage. Extreme
care should be taken in these circumstances.
As required by AS3500 a tempering valve must be fitted to the heater to prevent the water temperature exceeding a preset safe
maximum. The tempering valve is connected to the hot water outlet pipe. The valve must be fitted at the time of system
installation or in retrofit to existing systems by contacting your local Solahart representative.
WARNING
AS A SAFETY PRECAUTION, YOUNG CHILDREN SHOULD NOT BE ALLOWED TO OPERATE WATER
HEATERS OF ANY TYPE
Period of Reduced Usage or Holidays
If the water heater is left unused for two weeks or more a small quantity of hydrogen gas, which is highly flammable may
accumulate in the top of the water cylinder. To dissipate this gas safely, it is recommended that a sink hot tap be turned on for
several minutes. Do not use a dishwasher, clothes washer or other appliance for this purpose. During this procedure there
must be no smoking, open flames or any electrical appliance operating nearby. If hydrogen is discharged through the tap it
will make an unusual sound like air escaping.
‘Hartgard’ Solution
‘Hartgard’ solution is blue in colour. Should the water from your Closed Circuit Series Heater appear blue, then this may
indicate a leak of ‘Hartgard’ from the jacket into the potable water. ‘Hartgard’ is a food-grade solution, and not
hazardous to health. However, the blue colour in the water indicates a fault, and your Solahart serviceman should be
contacted to inspect the system.
Heat Dissipation Kit
The Heat Dissipation Kit is an option that should be fitted to all installations of ‘KF’ collectors in medium to high solar areas.
The kit is designed to remove excess heat from the potable water tank when the water temperature exceeds 75°C. This is
necessary due to the high efficiency of ‘KF’ collectors, and helps to prevent the tank from overheating in hot climates and
during periods of low hot water usage. Overheating will result in hot water discharge from the Pressure/Temperature Relief
Valve, on the side of the tank.
The Heat Dissipation Kit is primarily a heat pipe,
containing a small measured volume of water and is
factory-sealed to maintain an internal vacuum. Part of the
pipe nests inside the storage tank, sensing the temperature
of the potable water. The other section of pipe is finned
and is mounted to the back of the tank to dissipate excess
heat.
At potable water temperatures of less than 75°C, the heat
pipe is dormant. When the temperature of the potable
water tank rises above 75°C, the small amount of water
sealed in the heat pipe inside the tank boils and the
resulting vapour rises up to the finned section of pipe on
the back of the tank. The heat is dissipated to atmosphere
by the fins causing the water to condense and run back
down into the length of pipe inside the storage tank, where
it is again heated, repeating the cycle.
In this way the Heat Dissipation Kit helps to prevent the
system from over-heating. Over-heating may still occur
during periods of low water use or excessively high
atmospheric temperatures.

33-1197 Solahart Owner’s Manual – Thermosyphon Systems - Revision A – September 2003 5
MAINTENANCE
Service Calls
Should your Solahart not provide hot water please check the following before requesting a service call:
1) Shading from trees is not excessive and is not covering the collectors for all or part of the day.
2) Hot water usage is not excessive.
3) Hot water is not leaking from within the plumbing system.
4) Booster switch and/or time switch is turned ON.
5) Booster fuse is sound.
6) Electric or gas meter speeds up when the booster switch is turned ON after being OFF.
Contact your local Solahart dealer if all of the above have been checked and there is still no hot water.
Six Monthly Service
Some water supply authorities generally require both the hot and cold water relief valves to be flushed every six months. This
is a requirement for all types of hot water heaters.
To operate the valve easing gear on the pressure/temperature operated relief valves, simply hold the relief arm lever open.
DANGER
FAILURE TO OPERATE THE RELIEF VALVE EASING GEAR AT LEAST EVERY SIX MONTHS MAY
RESULT IN THE WATER HEATER EXPLODING. CONTINUOUS LEAKAGE OF WATER FROM THE VALVE
MAY INDICATE A PROBLEM WITH THE WATER HEATER.
At this time it is also advisable to clean the collector glass of dust or other dirt build up.
Major Service (Usually Every Five Years)
This service should be performed every five years, or more often in poor water quality areas. (Refer to Table on Page 6.)
1) Check closed circuit liquid level (Closed Circuit Series only).
2) Replace pressure/temperature operated relief valve. (Part No. 45-1004).
3) Flush cold water relief valve. (Part No. 45-1103).
4) Where fitted, check electric element for excessive calcium build up or corrosion. Replace if necessary.
5) Visually check unit for any potential problems, eg. broken glass, excessive dust build-up, shading etc.
6) Carefully inspect all connections.
7) Drain and flush out tank sediment build-up (if any) (Refer to instructions for emptying the water heater on Page 6).
8) Drain and flush out collectors (’L’ Series only) (Refer to instructions for emptying the water heater on Page 6).
9) Replace anode.
10) For units fitted with Gas Booster check:
i) Condition of spark electrode.
ii) Condition of flue terminal gasket.
iii) Build up of dust on fan.
IT IS RECOMMENDED THAT THE MAJOR SERVICE BE CARRIED OUT BY YOUR LOCAL SOLAHART
SERVICE REPRESENTATIVE.

6 33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003
Water Quality - Is it Suitable for the Solahart Water Heater?
Your Solahart heater is suitable for use with water with a total dissolved solid content is less than 1,000 ppm and for which
the total hardness does not exceed 200 ppm CaCO3. Water supplies having calcium hardness (CaCO3), and an alkalinity in
excess of 150 ppm should be treated by a softening process prior to use with this heater to prevent scaling and damage to the
electric booster element.
A water analysis can be obtained from your water supply authority.
Anode Replacement Period
The tank is lined with two coats of high quality vitreous enamel. The sacrificial anode is a low-cost item that is simple to
replace. All metals corrode in hot water. Copper and stainless steel tanks generally are not fitted with anodes and therefore
rely on the inherent properties of the metal to limit the corrosion rate. Replacing the anode regularly is less expensive than
replacing the complete tank.
Water quality details should be obtained from the water authority where special water supplies are used. The following table
is a guide to anode replacement intervals, and to system Major Service intervals.
Total Dissolved Solids (ppm) Recommended Anode Replacement/Major Service Interval
0 - 600 5 years
600 - 1,000 3 years
Over 1,000 Less than 2 years – refer to Solahart for a special anodes
Generally, where the water is supplied from a bore or well, the quality of the water will be such that a three-year anode
change (or less) will be required. A water analysis is recommended for these locations.
To replace the anode the Solahart serviceman will do the following;
1) Turn off the electricity or gas supply (which ever is applicable).
2) Turn off the water supply.
3) Release excess water pressure at the pressure/temperature relief value by holding the relief arm open.
4) Remove the terminal cover plate or flue cowl (for units fitted with gas booster).
5) Unscrew the anode nut located to the right of the electric element (or burner tube) and withdraw the old anode.
6) Insert the new anode assembly into the cylinder through the anode socket.
7) Tighten the new anode nut, turn on the water supply, and check that the seal on the nut is watertight.
8) Re-fit the cover (or flue terminal). Open a hot water tap to dispel air from the tank, or operate the
pressure/temperature relief value.
9) Turn on the electricity or gas supply (which ever is applicable).
DO NOT TURN POWER ON UNTIL THE HEATER IS FILLED WITH WATER OR DAMAGE TO THE
HEATING ELEMENT WILL RESULT
To Empty the Water Heater
1) For Closed Circuit Series, securely cover the collectors from sunlight with cardboard or other opaque material
BEFORE emptying the water heater.
2) Turn off the electricity or gas supply (whichever applicable).
3) Turn off the water supply.
4) For Closed Circuit Series, relieve the pressure in the jacket by removing the PR6 jacket relief valve. Extreme care
should be taken when removing the valve as the jacket fluid could be at high temperature and under pressure.
5) Release excess water pressure at the pressure/temperature relief valve by holding the relief arm open.
6) Disconnect the cold water inlet and allow the water to drain out via a hose fitted to the cold water inlet connection.
Avoid contact with the hot water and ensure that the hose safely discharges the hot water away from the roof area.
7) Hold open the tank relief lever to allow air into the storage tank.
8) For ‘L’ Series only, unscrew and remove the bung plug on the bottom right-hand corner of the right-hand collector.

33-1197 Solahart Owner’s Manual – Thermosyphon Systems - Revision A – September 2003 7
PR6 Jacket Relief Valve
The heat exchange jacket has a relief valve located in the vent pipe of the jacket. This relief valve is to prevent over-
pressurisation of the closed circuit either due to incorrect filling or abnormal operating conditions. During the heater's first
summer season, fluid will discharge from the relief valve until the ideal closed circuit fluid volume is established. Discharges
from the valve after this time could indicate the heater is not operating efficiently. Under these circumstances you must
contact your nearest Solahart service centre immediately. Do not attempt to service the heater yourself.
Collector Glass
To prevent rapid deterioration of the collector, broken glass should be replaced immediately.
HANDLING SHEETS OF GLASS ON THE ROOF MAY BE HAZARDOUS IN WINDY CONDITIONS, OR ON
SLIPPERY OR STEEPLY SLOPING ROOFS.
In these circumstances it is recommended that the collectors be removed from the roof to ground level for glass replacement.
In extremely dusty areas such as mining towns and locations adjacent to dust forming plants, it is recommended that the glass
cover of the collector be washed clean at least every three months, should adequate rain not have fallen in this period.
Insurance
It is recommended that the household insurance policy cover the collector glass and/or damage to the water heater, especially
in cyclonic areas and in locations where hail in excess of 25 mm diameter is likely to occur.
Comparative Energy Savings - (Solahart 302L v 302J v 302KF)
The figure below shows electric energy usage of Solahart solar hot water systems, compared to a 130 litre electric hot water
system. The table is compiled for a daily usage rate of 160 litres of water for an average household in Perth, Western
Australia. The figures below are indicative only, and may not reflect your situation as climate and hot water usage patterns
vary.
This Graph Indicates the Amount of Electricity Used

8 33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003
INSTALLATION INSTRUCTIONS - ALL MODELS
INSTALLATION MUST COMPLY WITH LOCAL ELECTRICAL AND PLUMBING CODES
LOCATION
For optimum performance, the heater should be installed facing the equator (South in the Northern Hemisphere, North in the
Southern Hemisphere). ALWAYS USE A COMPASS TO CHECK ORIENTATION. Deviation from the equator of up to 45o
East or West has little effect on total annual solar contribution (approximately 4 per cent). If it is not possible to face the
equator, the decision of either an EASTERLY or WESTERLY bias must be made. If the majority of hot water usage is before
2 p.m. favour an EASTERLY bias. If the majority of hot water usage is after 2 p.m. favour a WESTERLY bias.
Ideally, the heater should be installed on a pitch equal to the geographic latitude of the place of installation. However,
variation in the pitch to within ±20oof the latitude will have little effect on the total annual solar contribution (nominally
around a 4 per cent reduction). The minimum allowable angle of pitch of the heater is 10°, to ensure sufficient pitch for
thermo syphoning and glass cleaning. At pitches greater than 30°, the system must be installed using special tank straps and
mounted on a cyclone frame. These items are available from your local Solahart supplier.
If it is necessary to face the solar hot water heater 45oto
either the East or the West, a lower pitch installation will
give better performance. In such cases, the addition of a
third panel to the system may be more aesthetically,
economically and thermally beneficial than mounting the
heater on roof brackets to face the equator.
THE HEATER MUST BE INSTALLED ON AN
ADEQUATELY SUPPORTED AREA OF ROOF, as
close as possible to the most frequently used hot water
outlet, or existing water heater system in retrofit
installations. The heater must be installed in an area that
is free of shade all year round. Ensure that trees do not
shade the heater, particularly in winter.
ELECTRICAL CODES
Local codes in Australia require all electrical work to be performed by a qualified electrician. ALL INSTALLATIONS ARE
TO BE IN ACCORDANCE WITH LOCAL ELECTRICAL CODES APPLICABLE IN YOUR AREA. The power rating and
current requirement of your Solahart heater will be specified on the heater’s data plate, located on the cover to the electrical
cavity.
All electric wiring should be enclosed in weatherproof plastic or metal conduit with watertight fittings. An ON/OFF switch
MUST be installed in the home at a convenient location, eg: in the kitchen or laundry. An isolation switch must be installed in
the meter box for service work on the unit.
DO NOT TURN ON THE ELECTRICAL POWER TO THE HEATER'S ELEMENT
UNTIL THE STORAGE TANK IS FILLED WITH WATER.
Failure to do so will cause the electric booster element to burn out. If water and/or power is not available on completion of
installation, tape the booster control switch in the OFF position and place a warning label “DO NOT TURN ON
ELECTRICITY UNTIL FILLED WITH WATER” on the electrical booster control switch.
CONTROL THERMOSTAT/SAFETY CUT-OUT COMBINATION SWITCH
A combination thermostat/safety cut-out is installed to control the electrical heating element to the factory pre-set temperature
of 60ºC. Individual situations may require this setting to be altered. Only qualified electricians or Solahart service contractors
are permitted to adjust the thermostat. The safety cut-out will de-energise the element should the temperature within the tank
reach 87ºC when the element is activated. The safety cut-out will automatically reset when the water temperature falls back
below 87°C
PLUMBING NOTES
ALL INSTALLATIONS ARE TO BE IN ACCORDANCE WITH THE BUILDING AND PLUMBING CODES
APPLICABLE IN YOUR AREA. Australian codes require all plumbing work to be performed by a qualified plumber.
PLASTIC PIPING SHOULD NOT BE USED IN ANY HOT WATER PIPING RUNS, DUE TO THE HIGH
TEMPERATURE AND PRESSURE THAT SOLAR WATER HEATERS OPERATE AT.

33-1197 Solahart Owner’s Manual – Thermosyphon Systems - Revision A – September 2003 9
VALVES
A combined pressure/temperature relief value (Part No. 45-1004) is fitted to the connection end of the tank to limit both the
tank water pressure to 1000 kPa and the tank water temperature to 99oC. It is MANDATORY that this valve be fitted in all
cases, except where the storage tank is vented to atmosphere through an open pipe. When applying Teflon sealing tape to the
thread of this valve, ensure that the tape is at least 3 mm back from the end of the thread to prevent tape fouling the valve seat.
The discharge pipe connected to the pressure relief device is to be installed in a continuously downward direction and in a
frost-free ambient. Water may drip from the discharge pipe of the pressure relief valve and this discharge pipe must be left
open to the atmosphere.
The pressure relief device is to be operated regularly to remove lime deposits and to verify that it is not blocked. To operate the valve easing
gear on the pressure/temperature operated relief valves simply hold the relief arm lever open.
DANGER
FAILURE TO OPERATE THE RELIEF VALVE EASING GEAR AT LEAST EVERY SIX MONTHS MAY RESULT IN THE
WATER HEATER EXPLODING. CONTINUOUS LEAKAGE OF WATER FROM THE VALVE MAY INDICATE A PROBLEM
WITH THE WATER HEATER
A combined expansion valve, check valve and strainer are installed in the cold-water inlet pipe to the storage tank. The expansion valve is
set at 850 kPa. During heating, the water in the storage tank expands. This valve prevents excess pressure in the tank by relieving cold water
from the tank during expansion. On hot days, the amount of cold water being relieved may be up to 10 litres.
As required by AS3500, a tempering valve must be fitted to the heater to prevent the water temperature exceeding a preset safe maximum.
The tempering valve is connected to the hot water outlet pipe. The valve must be fitted at the time of system installation or in replacement
component installation to existing systems.
A stopcock must also be installed before the Combination Valve in the inlet line to enable the water to be turned OFF for servicing
purposes. The plumber provides the stopcock.
VALVE LOCATION
All the valves in the inlet line must be located at least 1 metre away from the heater and within easy reach, no more than 1.8 metres above
ground level. The valves should not be located on the house roof and NOT IN THE CEILING SPACE.
WATER PRESSURE
If the supply water pressure does not exceed 600 kPa the Combination Valve may be omitted from the installation - but a check valve and
cold relief must be included. In such cases the occurrence of any pressure in excess of 600 kPa under any circumstances will automatically
invalidate the Warranty given by Solahart. Where supply water pressure frequently exceeds 850 kPa, an additional pressure-limiting valve
will be necessary to limit incoming mains pressure to 600 kPa.
DRAIN LINES
The Pressure Temperature Operated Relief Valve, and the expansion valve on the Combination Valve assembly, should both have
drainpipes connected to their outlets. These pipes should run to ground level where hot water discharge is safe, and clear of any paved
areas. Do not seal or block the ends of these drain pipes or the valve outlets. Do not allow water from the valve outlets or drain pipes to drip
or discharge onto roofing materials or roof gutters. The PR6 jacket relief valve may also need to be piped to waste in some states.
SUPPLEMENTARY ENERGY SUPPLIES
The standard Pressure Temperature Operated Relief Valve that is fitted to the tank is rated at 10 kW. Supplementary energy supplies giving
a combined total heat input in excess of 10 kW including the electric booster should not be fitted to the heater unless the relief valve is
replaced with another of a larger capacity.
STOVE COIL BOOSTERS
Manually fed boosters such as stove coils, back boilers or coils in open fired grates are not permitted to be connected to Solahart heaters
unless the storage cylinder is open vented. Such auxiliary energy sources must not be connected into the closed circuit. Installation details
for these devices are available from Solahart on application. In Australia, refer to AS3500.1 for additional information. Refer also to your
local water authority requirements for details of vent design, header tank and reduction valves.
INSTALLATIONS IN CYCLONE OR HURRICANE AREAS
In areas susceptible to cyclones, hurricanes or very high winds, a separate set of instructions and a modified mounting kit is available from
Solahart. This kit is suitable for ‘with-pitch’ and low pitch installations only.
NOTICE TO VICTORIAN CUSTOMERS
The Victorian Plumbing Industry Commission advises that this appliance 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.

10 33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003
INSTALLATION INSTRUCTIONS - CLOSED CIRCUIT SERIES
THE TANKS AND COLLECTORS ARE HEAVY. IMPROPER LIFTING TECHNIQUES COULD RESULT IN PERSONAL
INJURY DURING INSTALLATION. IT IS THE INSTALLER’S RESPONSIBILITY TO USE ONLY APPROVED LIFTING
AND SAFETY DEVICES AND TECHNIQUES WHEN LIFTING COLLECTORS AND TANKS ON ROOFS.
Select the location of the storage tank. The front mounting foot of the tank should be positioned directly over a tile batten. Remove several
tiles to expose the rafters and this batten.
Measure 2050 mm down (1270 mm for 301Closed Circuit System) from the centre of the batten to determine the location of the collector
rail. (Refer to Diagram 4, Page 32) Mark this location. Remove several roofing tiles from this location to expose the rafters. Hook the two
stainless steel straps (Part No. 33-0847, three for 303Closed Circuit System) to the rail and line up the straps with the rafters. Ensure that
they are no more than 1.6 m apart and not closer than 1 m. After positioning the rail level, raise the left hand side 10 mm and fix the straps
to the rafters. Replace the tiles (Refer to Diagram 1, Page 31).
Move back up to where the storage tank is to be positioned. Place the aluminium flashing over this row of tiles and tuck the top of the
flashing under the row above.
Now using a lifting device, lift collectors onto the roof and place them carefully into the collector rail. Remove the red transit plugs from
the collector sockets.
Join the collectors together using the collector connector assemblies (Part No. 33-7121). Ensure the conetite fittings are fully inserted into
the sockets before tightening the nuts. Only medium spanner pressure will be required.
The conetite fittings should be used only once. If for any reason, assemblies with conetite fittings need to be removed, replace them
completely with new assemblies.
Fit the fill assembly (Part No. 33-7134) and the collector bung assembly (Part No. 33-7135) into the bottom left and top right hand corners
(respectively) of the left and right hand collectors (respectively) using medium spanner pressure. Centralise the collectors on the rail, and
lock collectors to rail with the 4 collector clamps and tighten, using the nuts and bolts provided.
For roof installations, slide the tank-to-collector spacers (Part No. 33-7144) over the top of the collectors. These should be located 200 mm
from the outer edge of the collectors, and on a high spot of the tiles (or profile for metal roofs).
Now using a lifting device, lift the tank onto the roof. Place the tank onto an aluminium flashing, and locate the tank central to the
collectors before sliding it down onto the spacers.
Secure the tank to the roof rafters in a similar manner to that for the collectors, using the tank straps (Part No. 33-0845) and the aluminium
clamps (Part No. 33-0847). Loosely attach the tank clamps to the rear foot of the tank base, and clip in and bolt the tank straps as per
Diagrams 2 & 3, Page 31. Ensure the bolt heads fit into the valley of the tile.
Remove the yellow instruction label from the cold pipe. Fit the cold pipe first at the right hand side of the tank and insert the other end of
the pipe to the lower collector socket and tighten.
Remove the yellow instruction label from the hot pipe. Fit the hot pipe first at the left hand side of the tank. Tighten collector side nut,
before tightening tank side nut. The floating conetite should always be on the tank side.
When in position, secure the tank straps to the roof rafters as for the collector strap. Ensure straps are tight. Replace roof tiles. Fit the
Pressure/Temperature Operated Relief Valve (Part No. 45-1004) into the tank as per water connection diagrams, Page 30.
If the installation involves ‘KF’ collectors then the Heat Dissipation Kit should now be fitted. Refer to the section on Page 12 for
installation instructions.
FILLING AND COMMISSIONING OF THE STORAGE TANK
Do not turn on electric power or gas until the tank has been filled with water. Turn on at least one hot water outlet tap - preferably over
a bath or laundry basin. Open the mains water supply tap on the line to the water heater and allow the water to fill the storage cylinder
dispelling air out of the top of cylinder through the open tap. As soon as water flows freely (without air bursts) from the tap, close the tap
and allow the cylinder to pressurise. Check all joints for water tightness.
Turn on the electric power or gas to the booster element ensuring that the power or gas is correctly connected ie. ‘Active’ line to ‘Active’
terminal etc.
Operate both pressure relief valves easing gear to ensure that the valves are functional. The storage tank is now filled and ready to operate
as an electric or gas water heater. To operate as a solar water heater, the closed circuit must be commissioned by an authorised Solahart
installer or service contractor.

33-1197 Solahart Owner’s Manual – Thermosyphon Systems - Revision A – September 2003 11
FILLING AND COMMISSIONING THE CLOSED CIRCUIT
The solar collectors and tank heat exchange jacket are connected together in a sealed, closed circuit that is entirely separate from the potable
water in the storage cylinder. The circuit is filled with ‘Hartgard’ solution. Under no circumstances can any fluids other than ‘Hartgard’ be
used as the heat transfer fluid.
Only Solahart trained and authorised installers are permitted to fill the closed fluid circuit. Refer to your Solahart dealer for more
information. For authorised installers, a special set of instructions and installation tools are provided.
Only potable water can be used in conjunction with ‘Hartgard’. Refer to the section on water quality on Page 5 of this manual.
THE STORAGE TANK MUST BE FILLED WITH WATER BEFORE FILLING THE CLOSED CIRCUIT.
Open the closed circuit installation kit. Remove the fill plug from the fill assembly and place one end of the hose over the fill assembly. Fill
the collectors with potable water. Continue filling until the water overflows from the PR6 jacket relief valve outlet and air bubbles stop.
Insert the test block into the PR6 valve location socket, and screw the PR6 valve into test block. Now remove the hose from the fill
assembly and screw in the fill plug. Connect a bicycle pump to the test block and pump up closed circuit to 80 kPa. Inspect all connections
for evidence of leakage. Ensure that the 80kPa pressure remains constant. Should the pressure reduce at all, the leak point must be located
and rectified and the leak test procedure carried out again. Under no circumstances must a pressure reduction be ignored.
Release pressure from the closed circuit by removing the PR6 valve from the test block. When the pressure has been released refit the PR6
valve to the test block. Now remove the fill plug and reconnect the hose to the fill fitting. Remove the PR6 valve, place the other end of the
hose into the Hartgard bottle, and siphon the entire contents into the closed circuit. During this operation water will flow from the PR6 port
of the test block. When the Hartgard container is completely empty, reconnect the hose to the hot relief port of the tank and flush the
remainder of the blue Hartgard in the hose into the closed circuit.
When commissioning a system under freezing conditions, flush the hose clean and allow water to flow through the PR6 port for at least
30seconds. This will ensure that the Hartgard is mixed with water.
Refit the PR6 valve into the test block. Replace the fill plug. Pump the closed circuit up again to 80 kPa, check for leaks.
Release pressure from the closed circuit by again removing the PR6 from the test block. Remove the test block from the tank and refit the
PR6 valve in its place ensuring the O’ ring is in place.
Finally remove all packaging and unused items and ensure the roof is clean and tidy. The Solahart brand name sticker is fitted to the tank in
the factory, however the sticker for the "Natural Wonder" (Gas Boosted) heaters must be fitted on site.
Fill in the completion report and obtain the client's signature.
FIBRO CEMENT OR METAL SHEET ROOFING
Select a location for the storage tank, close to a purlin Avoid locating tank at mid-span of seating. Fixing and assembly procedures are
similar to that detailed for tiled roofs, with the exception that the tank straps and the collector straps are fixed with coach screws to the
purlins below (Refer to Diagram 5, Page 32).
METAL TILED ROOF
Select a location for the storage tank. The front mounting foot of the tank should be positioned directly over a tile batten. Fixing and
assembly procedures are similar to that detailed for tiled roofs, except that the tank and collector straps are fixed with spring head
galvanised nails directly through the metal tiles into the rafters below. Seal under the straps with a weatherproof mastic sealer.
INSTALLATIONS USING STANDS
Refer to installation sheet in the stand kit.
SPECIAL CONSIDERATIONS FOR COLD CLIMATES
In areas where air temperatures fall below -15ºC at any time or where snow will remain on the ground for more than 24 hours continuously,
refer to Solahart for specific recommendations on suitability of location.
In areas subject to heavy snowfalls, care should be taken that snow cannot build up behind the tank and that the brackets installed are
capable of withstanding the expected snow loading. In these cases install the tank as close as possible to the roof ridge.
In areas where temperatures may fall below 0ºC special care must be taken to ensure that exposed lengths of the hot pipe and cold pipe and
the inlet and outlet pipes of the solar hot water heater are insulated and moisture proofed. Ensure that pipes and valves are located away
from freeze locations wherever possible. Note that freezing of the valves can permanently damage the valves. Take particular care at roof
penetrations.
Install the combination valve and strainer/check valve indoors (eg. in the laundry) or in other locations not subject to freezing, but NOT in
the ceiling space. If these valves are located external to the building they must be insulated with at least 19 mm of fibreglass or foam
insulation material, and sealed to prevent entry of moisture. A satisfactory location in frost areas is on an external wall high under the eaves.
In locations frequently subject to atmospheric temperature below -10ºC, hot and cold pipes and valves may freeze even when insulated. It is
recommended that in these locations, the cold pipes and valves to the Solahart storage tank and the hot pipe from the tank should have
electric heater tape under the insulation. The electric heater tape should have a heat output of between 10 and 20 W/m. The tape should be a
self-limiting tape such as “Raychem” and should be controlled by a thermostat set at 0ºC. Connect the heater tape to a normally ON power
supply.

12 33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003
INSTALLATION INSTRUCTIONS - HEAT DISSIPATION KIT
All installations of ‘KF’ system collectors must also be fitted with a Heat Dissipation Kit. This kit should be fitted before the potable water
tank is filled.
The Heat Dissipation Kit comprises of a U-shaped heat pipe, aluminium mounting clips and brackets, and new brass fittings and O-rings to
seal the heat pipe at the point that it enters the tank.
Fit the aluminium mounting clips to the rear of the tank in the positions shown in the diagram below. The clips are secured to the tank using
double-sided adhesive tape supplied on the clips, and self-tapping screws. Measure from the edge of the black end cover for the left-to-right
measurement and from the bottom of the tank foot for the vertical height. Note: Two brackets are required for 180 and 220 litre systems
three brackets are required for the 300 and 440 litre systems.
Ensure that the potable water level in the tank is below one third full. Remove the existing brass fitting from the centre position in the tank
tail end. This fitting is removed by unscrewing in an anti clockwise direction.
Install the new brass adaptor fitting (Part No 33-0075) and O-rings (Part No 33-00166 and 33-0168) into the tank tail end socket and tighten
in a clockwise direction. Do not over tighten.
Remove the Heat Dissipation Pipe from the parts box. The length of copper tube that is to be inserted into the tank is coated in a protective
red polyolefin coating. Slide this coated length of copper tube through the new brass adaptor fitting and into the tank until the insulator
bush and O-ring assembly are positioned inside the adaptor fitting. Now screw the nut on the pipe into the brass adaptor fitting and tighten.
Ensure that the O-ring is correctly located into the insulator bush recess. Do not over tighten the nut.
Slide the mounting feet of the finned tube assembly into the aluminium mounting clips on the back of the tank and guide them down into
the locked position.
The system is now ready for automatic operation. When the water temperature in the lower section of the tank reaches 75ºC the Heat
Dissipation Kit will commence operation and the finned section will start to dissipate heat energy.
MOUNTING CLIP LOCATION MEASUREMENTS:
The 180 litre Heat Dissipation Kit is also used on the 220 litre system and the 300 litre kit is also used on the 440 litre system.
INSTALLATION INSTRUCTIONS – ‘L’ SERIES
THE TANKS AND COLLECTORS ARE HEAVY. IMPROPER LIFTING TECHNIQUES COULD RESULT IN PERSONAL
INJURY DURING INSTALLATION. IT IS THE INSTALLER’S RESPONSIBILITY TO USE ONLY APPROVED LIFTING
AND SAFETY DEVICES AND TECHNIQUES WHEN LIFTING COLLECTORS AND TANKS ON ROOFS.
Select the location of the storage tank. The front mounting foot of the tank should be positioned directly over a tile batten. Remove several
tiles to expose the rafters and this batten. Measure 2050 mm down (1170 mm for 30IL) from the centre of the batten to determine the
location of the collector rail. (Refer to Diagram 4, Page 32) Mark this location. Remove several roofing tiles from this location to expose
the rafters. Hook the two stainless steel straps (Part No. 33-0847, three for 303L) to the rail and line up the straps with the rafters. Ensure
that they are no more than 1.6m apart and no closer 1m. After positioning the rail level, raise the right hand side 10 mm and fix the straps to
the rafters. Replace the tiles (Refer to Diagram 1, Page 31).
Move back up to where the storage tank is to be positioned. Place the aluminium flashing over this row of tiles and tuck the top of the
flashing under the row above. Now using a lifting device lift collectors onto the roof. Place the collectors carefully into collector rail.
Remove the red transit plugs from the collector with a screwdriver. Silicon O-rings are supplied in the Parts Box and must be fitted at each
pipe connection.

33-1197 Solahart Owner’s Manual – Thermosyphon Systems - Revision A – September 2003 13
INSTALLATION INSTRUCTIONS – ‘L’ SERIES (cont)
Join the collectors using the collector unions provided (Part No. 33-0695). Apply only medium pressure with a spanner to tighten.
Centralise the collectors on the rail. Lock the collectors to the rail with the 4 collector clamps. Tighten using the nuts and bolts provided. Fit
the copper blanking discs (Part No. 33-0606) and collector nuts (Part No. 33-0600) into the top left hand corner of the left hand collector
and into the bottom right hand corner of the right hand collector.
Now use a lifting device to lift the tank onto the roof. Place the tank onto the aluminium flashing, central to the collectors. Fit the collector
hot pipe into the top right hand corner of the right hand collector. Fit the collector cold pipe into the lower left hand corner of the left hand
collector. After lining up the connecting pipes with the tank, fit the hot pipe. Fit the cold pipe to the tank cold inlet socket.
Secure the tank to the roof rafters in a similar manner to the collector using the tank straps (Part No. 33-0845) and the aluminium clamps
(Part No. 33-0847). Loosely attach the tank clamps to the rear foot of the tank base, and clip in and bolt the tank straps as per Diagrams. 2
& 3, Page 31. Ensure that the bolt heads fit into the valley of the tile. Ensure straps are tight. Replace roof tiles.
Fit the Pressure/Temperature Operated Relief Valve (Part No. 45-1004) into the tank as per the connection diagram on Page 30.
FIBRO CEMENT OR METAL SHEET ROOFING
Select a location for the storage tank close to a purlin. Avoid locating tank at mid-span of sheeting. Fixing and assembly procedures are
similar to that detailed for tiled roofs, with the exception that the tank straps and the collector straps are fixed with coach screws to the
purlins below (Refer to Diagram 5, Page 32).
METAL TILED ROOF
Select a location for the storage tank. The front mounting foot of the tank should be positioned directly over a tile batten. Fixing and
assembly procedures are similar to that detailed for tiled roofs, except that the tank and collector straps are fixed with spring head
galvanised nails directly through the metal tiles into the rafters below. Seal under the straps with a weatherproof mastic sealer.
STANDS
Refer to installation sheet in the stand kit.
INSTALLATIONS USING CONNECTION OF TEMPERATURE LIMITING DEVICES
In the event of the collectors stagnating and generating steam, it is possible that high temperature water may by-pass the temperature
limiting device. To prevent this from occurring please follow the connection details shown below.
FILLING AND COMMISSIONING THE STORAGE TANK AND COLLECTORS
DO NOT TURN ON ELECTRIC POWER OR GAS UNTIL AFTER THE VESSEL HAS BEEN FILLED WITH WATER.
Turn on a least one hot water outlet tap. Preferably over a bath or laundry basin. Open the mains water supply valve on the line to the water
heater to allow water to fill the storage cylinder and collectors, dispelling air out of the top of the cylinder through the open tap. As soon as
water flows freely (without air bursts) from the tap, close the tap and allow the cylinder to pressurise. Check all joints for water tightness.
Turn ON the electric power or gas to the booster element ensuring that the power or gas is correctly connected ie. ‘Active’ line to ‘Active’
terminal etc.
Operate the easing lever on both pressure relief valves to ensure that the valves are functional. The system tank is now filled and ready to
operate.

14 33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003
TECHNICAL SPECIFICATIONS
Systems
151L 151J 151KF 181L 181J 181KF 181KF
FREE HEAT
181J
FREE HEAT 181KF BCXII 182L 182J 182KF 182KF FREE HEAT
Delivery litres 130 130 130 160 160 160 160 160 160 160 160 160 160
(solar) US gal. 34.3 34.3 34.3 42.3 42.3 42.3 42.3 42.3 42.3 42.3 42.3 42.3 42.3
Delivery litres 128 128 128 153 153 153 153 153 153 153 153 153 153
(aux. boost) US gal. 34 34 34 40.6 40.6 40.6 40.6 40.6 40.6 40.6 40.6 40.6 40.6
Weight kg 239 256 256 275 291 291 292 292 292 311 337 337 338
(full) lbs 527 564 564 606 641 641 644 644 644 685 743 743 745
Weight kg 86 102 102 92 107 107 108 108 108 125 153 153 154
(empty) lbs 190 225 225 203 236 236 238 238 238 276 337 337 339
Length m 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45
in 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5
Height m 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51
in 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1
Width m 1.29 1.29 1.29 1.485 1.485 1.485 1.485 1.485 1.485 2.31 2.31 2.31 2.31
in 50.1 50.1 50.1 58.5 58.5 58.5 58.5 58.5 58.5 90.9 90.9 90.9 90.9
Working kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
Pressure psi 145 145 145 145 145 145 145 145 145 145 145 145 145
Test kPa 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100
Pressure psi 305 305 305 305 305 305 305 305 305 305 305 305 305
Tank type 150L 150J 150J 180L 180J 180J 180F 180F 180K 180L 180J 180J 180F
Type of Collector L J KF L J KF KF J KF L J KF KF
Number of Collectors 1111111112222
Systems
182J
FREE HEAT 182KF BCXII 221L 221J 221KF 221KF BCXII 221JXII 301L 301J 301KF 301KF BCXII 302L 302J
Delivery litres 160 160 200 200 200 200 200 240 240 240 240 280 280
(solar) US gal. 42.3 42.3 52.8 52.8 52.8 52.8 52.8 63.4 63.4 63.4 63.4 74 74
Delivery litres 153 153 184 184 184 184 184 246 246 246 246 246 246
(aux. boost) US gal. 40.6 40.6 48.6 48.6 48.6 48.6 48.6 65 65 65 65 65 65
Weight kg 338 338 324 347 347 348 348 421 448 448 449 457 494
(full) lbs 745 745 714 765 765 767 767 928 987 987 990 1007 1089
Weight kg 154 154 101 123 123 124 124 118 144 144 145 151 186
(empty) lbs 339 339 223 271 271 273 273 260 317 317 320 333 410
Length m 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45
in 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5
Height m 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51
in 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1
Width m 2.31 2.31 1.76 1.76 1.76 1.76 1.76 2.31 2.31 2.31 2.31 2.31 2.31
in 90.9 90.9 69.3 69.3 69.3 69.3 69.3 90.9 90.9 90.9 90.9 90.9 90.9
Working kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
Pressure psi 145 145 145 145 145 145 145 145 145 145 145 145 145
Test kPa 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100
Pressure psi 305 305 305 305 305 305 305 305 305 305 305 305 305
Tank type 180F 180K 220L 220J 220J 220K 220K 300L 300J 300J 300K 300L 300J
Type of Collector JKFL JKFKFJ L JKFKFL J
Number of Collectors 2211111111122
Systems
302KF 302KF
FREE HEAT
302J
FREE HEAT 302KF BCXII 302JXII 303L 303J 303KF 303KF FREE HEAT
303J
FREE HEAT 303KF BCXII 303JXII 443L
Delivery litres 280 280 280 280 280 285 285 285 285 285 285 285 400
(solar) US gal. 74 74 74 74 74 75.3 75.3 75.3 75.3 75.3 75.3 75.3 105.7
Delivery litres 246 246 246 246 246 246 246 246 246 246 246 246 359
(aux. boost) US gal. 65 65 65 65 65 65 65 65 65 65 65 65 94.9
Weight kg 494 495 495 495 495 493 540 552 552 541 552 541 676
(full) lbs 1089 1091 1091 1091 1091 1087 1190 1217 1217 1192 1217 1192 1490
Weight kg 186 187 187 187 186 184 228 228 229 229 229 229 250
(empty) lbs 410 412 412 412 410 406 503 503 505 505 505 505 551
Length m 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45
in 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5
Height m 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51
in 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1
Width m 2.31 2.31 2.31 2.31 2.31 3.16 3.16 3.16 3.16 3.16 3.16 3.16 3.34
in 90.9 90.9 90.9 90.9 90.9 124.4 124.4 124.4 124.4 124.4 124.4 124.4 131.5
Working kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
Pressure psi 145 145 145 145 145 145 145 145 145 145 145 145 145
Test kPa 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100
Pressure psi 305 305 305 305 305 305 305 305 305 305 305 305 305
Tank type 300J 300F 300F 300K 300K 300L 300J 300J 300F 300F 300K 300K 440L
Type of Collector KF KF J KF J L J KF KF J KF J L
Number of Collectors 2222233333333

33-1197 Solahart Owner’s Manual – Thermosyphon Systems - Revision A – September 2003 15
TECHNICAL SPECIFICATIONS (cont)
Systems
443J 443KF 443KF
FREE HEAT
443J
FREE HEAT 443KF BCXII 443JXII 444L 444J 444KF 444KF
FREE HEAT
444J
FREE HEAT 444KF BCXII 444JXII
Delivery litres 400 400 400 400 400 400 400 400 400 400 400 400 400
(solar) US gal. 105.7 105.7 105.7 105.7 105.7 105.7 105.7 105.7 105.7 105.7 105.7 105.7 105.7
Delivery litres 320 320 320 320 320 320 320 320 320 320 320 320 320
(aux. boost) US gal. 84.5 84.5 84.5 84.5 84.5 84.5 84.5 84.5 84.5 84.5 84.5 84.5 84.5
Weight kg 729 729 741 730 741 730 712 775 787 788 776 788 776
(full) lbs 1607 1607 1633 1609 1633 1609 1569 1708 1735 1737 1710 1737 1710
Weight kg 289 289 302 290 302 290 260 319 332 333 320 333 320
(empty) lbs 637 637 666 639 666 639 573 703 732 734 705 734 705
Length m 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45 2.45
in 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5 96.5
Height m 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51 0.51
in 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1
Width m 3.34 3.34 3.34 3.34 3.34 3.34 4.36 4.36 4.36 4.36 4.36 4.36 4.36
in 131.5 131.5 131.5 131.5 131.5 131.5 171.8 171.8 171.8 171.8 171.8 171.8 171.8
Working kPa 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000 1000
Pressure psi 145 145 145 145 145 145 145 145 145 145 145 145 145
Test kPa 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100 2100
Pressure psi 305 305 305 305 305 305 305 305 305 305 305 305 305
Tank type 440J 440J 440F 440F 440K 440K 440L 440J 440J 440F 440F 440K 440K
Type of Collector J KFKF J KF J L J KFKF J KF J
Number of Collectors 3333334444444
Tanks
150L 150J 180L 180J 180K 180F 220L 220J 220K 300L 300J 300K 300F
Capacity litres 150 150 180 180 180 180 220 220 220 300 300 300 300
USgal. 40404848484858585880808080
Weight kg 199 206 235 245 246 246 284 297 298 381 398 399 399
(full) lbs 439 454 518 540 540 540 626 655 655 840 877 877 877
Weight kg 49 56 55 65 66 66 64 77 78 81 98 99 99
(empty) lbs 108 123 121 143 143 143 141 170 170 179 216 216 216
Length m 1.28 1.28 1.494 1.494 1.494 1.494 1.76 1.76 1.76 2.31 2.31 2.31 2.31
in 50.4 50.4 58.8 58.8 58.8 58.8 69.3 69.3 69.3 91 91 91 91
Height & m 0.510.510.510.510.510.510.510.510.510.510.510.510.51
width in 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1 20.1
Tanks
440L 440J 440K 440F
Collectors
LJKF
Tray: Aluminium: 0.6 mm
Capacity litres 440 440 440 440 Aperture m
2
1.87 1.87 1.87 Insulation: Polyester: 55mm - L and J
US gal. 116 116 116 116 ft
2
20 20 20 Glasswool: 55mm - KF
Weight kg 564 587 588 588 Capacity litres 33.53.5 Glass: Tempered Low Iron, 3.2mm
(full) lbs 1243 1294 1294 1294 US gal. 0.8 0.9 0.9
Weight kg 124 147 148 148 Weight kg 36 46 46
(empty) lbs 273 324 324 324 (full) lbs 79 101 101
Length m 3.285 3.285 3.285 3.285 Weight kg 33 42 42
in 129.3 129.3 129.3 129.3 (empty) lbs 73 93 93
Height & m 0.510.510.510.51 Length m 1.937 1.937 1.937
width in 20.1 20.1 20.1 20.1 in 76.6 76.6 76.6
Depth m 0.077 0.077 0.077
Cylinder material Steel, low carbon, 2.5 mm (0.1") in 333
Cylinder lining Primaglaze: ceramic vitreous enamel, 2 coats Width m 1.022 1.022 1.022
Insulation Polyurethane: pressure injected foam, zero CFC in 40.24 40.24 40.24
Case Aluminium: marine grade, 0.4 mm (0.2") Working kPa 8508080
End caps Polypropylene: carbon black, UV stabiliized pressure psi 85 12 12
Anode Magnesium, sacrifical, steel core Test kPa 150 450 450
pressure psi 22 64 64
Auxilliary Electric Booster Natural Wonder Gas Booster No of risers 63535
Type: Copper sheath, immersion Type: Fan forced Riser material Copper Steel Steel
Rating (kW):1.8, 2.4, 3.0, 3.6, 4.8 Rating: 13MJ/h Absorber material Aluminium Steel Steel P* = Polyester powder coat
Supply Voltage: 220V - 250V Supply Voltage: 220V - 250V Absorber surface P* P* C* C* = Chromonyx selective surface

16 33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003
INSTALLATION DIAGRAM - MODEL 151J & 151KF
Please refer to the installation instructions for Closed Circuit models on Page 10 for information on pipe and valve frost
damage, instructions on filling and commissioning the storage tank and closed circuit.
For water connection diagrams, refer to Page 30.
For assembly diagrams 1, 2, 3, 4 and 5, refer to Pages 31 and 32.

33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003 17
INSTALLATION DIAGRAM - MODEL 151L
PLEASE NOTE
Solahart Model 151L is not intended under any circumstances for use in a known frost area. A 151L system installed in a
known frost area does not carry any warranty. Solahart Closed Circuit Series heaters are specially designed for frost prone
and bad water areas and should always be installed in these conditions.
Please refer to the installation instructions for `L' models on Page 12.
For water connection diagrams, refer to Page 30.
For assembly diagrams 1, 2, 3, 4 and 5, refer to Pages 31 and 32.

18 33-1197 - Solahart Owner’s Manual – Thermosyphon Systems – Revision A – September 2003
INSTALLATION DIAGRAM - MODEL 181J, 181KF,
181KF FREE HEAT, 181J FREE HEAT & 181KF BCXII
Please refer to the installation instructions for Closed Circuit models on Page 10 for information on pipe and valve frost
damage, instructions on filling and commissioning the storage tank and closed circuit.
For water connection diagrams, refer to Page 30.
For assembly diagrams 1, 2, 3, 4 and 5, refer to Pages 31 and 32.