Rheem NPT 200 User manual

This collector kit must be installed and serviced by a qualified person
Please leave this guide with the householder.
Installation Instructions
Solar Collector Kit
Solar Collector Add On Kit
NPT 200 SOLAR COLLECTORS
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.

2
WARNING: Plumber –Be Aware
The solar hot and solar cold pipes between the solar storage tank and the
solar collectors MUST BE of copper. All compression fittings must use
brass or copper olives.
The full length of the solar hot and solar cold pipes MUST BE insulated.
The insulation must:
be of a closed cell type or equivalent, suitable for a solar water heating
application and capable of withstanding the temperature of the water
generated by the solar collectors under stagnation conditions
The specification of the chosen insulation material should be checked
with the insulation manufacturer prior to installation as different
materials may vary in temperature tolerance.
be at least 13 mm thick, however thicker insulation may be required to
comply with the requirements of either AS/NZS 3500.4 or
AS/NZS 3500.5:2012 Section 3 (for a Class 1a or Class 10 building) as
applicable under the Plumbing Code of Australia
be weatherproof and UV resistant if exposed
extend through any penetrations in the eaves, ceiling and roof
cover valves and fittings in the solar pipe work
be fitted up to and cover the connections on both the solar storage tank
and the solar collectors.
Note: Failure to observe these requirements also increases the risk
of freeze damage.
Uninsulated pipe work, including concealed in cavities and roof spaces or
where it may be in contact with a metal roof, may lead to freeze damage.
The system has NO WARRANTY for freeze damage if the solar hot and
solar cold pipes are not insulated in accordance with the installation
instructions.
The insulation is essential to assist in providing freeze protection, will offer
protection to a metal roof against corrosion due to water running off the
copper pipes, assist in avoiding accidental contact with the solar pipe work
as very high temperature water can flow from the solar collectors to the
solar storage tank, and also reduce pipe heat losses.
Plumber: It is important to refer to and read in full the complete
“Warning: Plumber – Be Aware” statement commencing on page 13.

3
CONTENTS
HOUSEHOLDER - This installation instruction booklet is
intended for the installer but you may find it of interest.
Components And Kit Contents ..................................................4
System Installation......................................................................5
Installation –Solar Storage Tank...............................................7
Installation –Solar Collectors....................................................8
Roof Assembly Of Solar Collectors.........................................17
Connection Details....................................................................25
Pipe Work Roughing In Dimensions........................................29
Installation –Solar Collectors..................................................31
Warranty Note............................................................................35
Notice to Victorian Customers from the
Victorian Plumbing Industry Commission.
This water heater must be installed by a licensed person
as required by the Victorian Building Act 1993.
Only a licensed person will give you a Compliance Certificate, showing that
the work complies with all the relevant Standards. Only a licensed person will
have insurance protecting their workmanship for 6 years. Make sure you use
a licensed person to install this water heater and ask for your Compliance
Certificate.

4
COMPONENTS AND KIT CONTENTS
SOLAR COLLECTOR KIT AND COLLECTOR ADD ON KIT
For installation with a solar storage tank.
Your solar water heater is designed for the solar collectors to be roof mounted
and the solar storage tank to be installed at ground or floor level. The collector
kits are suitable for:
Collector Kit (1 or 2 solar collectors)
299139 NPT 200 solar collectors Screwed fittings
Collector Add On Kit (for each additional solar collector)
299140 NPT 200 solar collector Screwed fittings
Note: One Collector Add On Kit is required for each additional solar collector.
Part No
Kit Components and Description
299139
Collector
kit
NPT 200
299140
Add on kit
NPT 200
129870
Installation instructions roof kit
1
-
191614
Collector angle 1 panel
-
1
191613
Collector angle 2 panel
1
-
191801
Collector straps
4
3
080022
Screws self tapper ½” x 8G ZP pan head
8
3
330695
Collector union assembly
2
2
063603
Connector M33
1
-
063604
Sensor connector M33 assembly –consisting of:
1 x 063605 fitting M33-15BSP for temp sensor
1 x 088062 sensor nipple solar loline
1 x 087026 O ring 5/16” ID x 1/16 BS011 silicone
1
-
088027
Compression olive copper ½”
2
-
080055
Compression nut brass ½”
2
-
063602
End plug collector M33
2
-
330606
Blanking disc
2
-
330171
O ring 25 ID x 3.2
8
4
056001
or
056029
Hot sensor assembly Loline
1
-
087025
O ring 5/32” ID x 1/16
2
-
123204
Label hot pipe / cold pipe
1
-
348071
Cable ties 150 mm long
3
-

5
SYSTEM INSTALLATION
THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING.
The system is suitable for installation with NPT 200 solar collectors as part of an
open circuit system installation.
The system is not suitable for installation above 400 metres altitude.
IMPORTANT NOTES
Working on roofs is and should always be considered a hazardous activity,
particularly early in the morning, late in the evening, when the roof is wet and
during and after periods of rain.
All work must be carried out in accordance with Local, State and Federal
Occupational Safety, Health and Welfare Regulations. In particular, the
requirements for safety whilst manual lifting, working at heights and on roofs.
Installers must be competently trained in:
Height Hazard Assessment
Working at Height Procedures
Assessment / Use / Wearing of correct height safety equipment
(harnesses etc.)
All other relevant safety factors specific to the installation and
maintenance work to be compliant with suitable Occupational, Health and
Safety Regulations / Codes.
All relevant permits shall be obtained from the regulatory authorities before
commencing work to install the solar hot water system.
All work carried out must be performed by appropriately qualified
tradespeople or be suitably supervised for trades assistant duties.
Every care must be taken to protect and warn occupants of the building and
the public from personal injury which may occur from falling tools, roof
materials, fittings or any other hazards of a general nature.
Advise the occupants of any inconvenience which may occur due to
disconnection of existing water and electrical supplies.
The connection, attachment, integration or general association of other
equipment or parts which either directly or indirectly affect the operation or
performance of this equipment could void the warranty.

SYSTEM INSTALLATION
6
INSTALLATION STANDARDS
The water heater must be installed:
by a qualified person, and
in accordance with the installation instructions, and
in compliance with Standards AS/NZS 3500.4 or AS/NZS 3500.5:2012
Section 3 (for a Class 1a or Class 10 building) as applicable under the
Plumbing Code of Australia, AS/NZS 3000 and all local codes and regulatory
authority requirements.
In New Zealand, the installation must also conform to Clause G12 of the New
Zealand Building Code.
WATER HEATER APPLICATION
This water heater is designed for use in a single family domestic dwelling for the
purpose of heating potable water. Its use in an application other than this may
shorten its life.
If this water heater is to be used where an uninterrupted hot water supply is
necessary for the application or business, then there should be back-up
redundancy within the hot water system design. This should ensure the continuity
of hot water supply in the event that this water heater was to become inoperable
for any reason. We recommend you provide advice to the system owner about
their needs and building back-up redundancy into the hot water supply system.
OPEN CIRCUIT SYSTEM INSTALLATION
An open circuit system has a collector circuit which is directly connected to the
potable water in the solar storage tank. Potable water from the solar storage tank
circulates through and collects heat gained by the solar collectors and then
circulates back into the solar storage tank.
Freeze Protection
The system has a level of freeze protection designed to guard the system against
damage from freeze conditions. The system must be installed with the full length
of the solar hot and solar cold pipes insulated to offer protection against freeze
damage (refer to “Warning: Plumber Be Aware” on page 13). Freeze conditions
occur below 6°C.
The system has NO WARRANTY for freeze damage when installed above
400 metres altitude or if the solar hot and solar cold pipes are not insulated in
accordance with the installation instructions (refer to “Warranty Note” on
page 35).
Note: Warranty against freeze damage applies only to systems installed in
Australia.

7
INSTALLATION –SOLAR STORAGE TANK
SOLAR WATER HEATER STORAGE TANK LOCATION
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 8, to “Pipe Lengths” on
page 12 and to “Maximum Height to Collectors” on page 15.
Refer to the installation instructions supplied with the solar storage tank for
installation details of the solar storage tank.

8
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 both the maximum length of the
solar hot and solar cold pipes and the maximum height between the solar storage
tank and the solar collectors. Refer to “Solar Collector Location” on page 8, to
“Pipe Lengths” on page 12 and to “Maximum Height to Collectors” on page 15.
The solar collectors must be installed in a shade free position. The surrounds
should be checked for higher buildings or trees which may cause shade at other
times of the year and for small trees which may grow and shade the solar
collectors in the future.
The installation must comply with the requirements of either AS/NZS 3500.4 or
AS/NZS 3500.5:2012 Section 3 (for a Class 1a or Class 10 building) as
applicable under the Plumbing Code of Australia, and all local codes and
regulatory authority requirements.
Refer to the installation instructions supplied with the solar storage tank for
details on the installation of the solar storage tank.
ROOF STRENGTH
The installer must ensure the structural integrity of the building is not
compromised by the solar water heater installation and the roof structure is
suitable to carry the full weight of the solar collectors and frame (if one is
installed). If in any doubt of the construction or the condition of the roof, the roof
should be suitably strengthened. Consult a structural engineer. Each solar
collector and its fittings weighs approximately 42 kg when full of water.
ROOF AREA FOR INSTALLATION
Roof area required for solar collectors:
4 solar collectors –4.6 m wide x 2.0 m deep. Weight (full) 168 kg approx.
3 solar collectors –3.5 m wide x 2.0 m deep. Weight (full) 126 kg approx.
2 solar collectors –2.4 m wide x 2.0 m deep. Weight (full) 84 kg approx.
1 solar collector –1.3 m wide x 2.0 m deep. Weight (full) 42 kg approx.
In addition to this area, a minimum of one (1) metre clearance is recommended
to be left around the solar collectors on all four sides for safe service access.

INSTALLATION –SOLAR COLLECTORS
9
Maximum Number of Collectors
The maximum recommended number of these non-selective collectors for each
tank size as part of an open circuit system is:
410 model tank –4 x NPT200 collectors
325 model tank –3 x NPT200 collectors
270 model tank –3 x NPT200 collectors
ORIENTATION OF SOLAR COLLECTORS
To help maximise system performance, solar collectors should be installed with
an optimum orientation facing true north (in the southern hemisphere) or true
south (in the northern hemisphere). Always check for true north or true south
using a compass or other suitable device.
The solar performance of a system reduces as the orientation of the collectors
moves away from the optimum orientation, resulting in the need for increased
boosting to supply the same hot water load. Solar collectors facing up to 45°from
the optimum orientation will receive about 4% to 5% less total solar radiation.
However, the optimum orientation of solar collectors is not always practical or
achievable. Solar collectors may be installed up to 90° from the optimum
orientation. Where the orientation is greater than 60° from the optimum, it may
be possible for an additional solar collector to be installed or to install selective
surface collectors in lieu of non-selective surface collectors to help make up for
the reduction in solar performance compared to the optimum orientation. Each
option should be discussed with the system owner.
If neither of these options are possible nor acceptable to the system owner, then
the system owner needs to be made aware of, understand and accept that
increased boosting may be required to meet their hot water requirements.

INSTALLATION –SOLAR COLLECTORS
10
INCLINATION OF SOLAR COLLECTORS
To help maximise system performance, solar collectors should be installed with
an optimum inclination. This is equal to 90% to 100% of the local latitude angle
when collectors are oriented within 60° of true north or true south, and between
10° and 20° when the collectors are oriented between 60° and 90° from the
optimum orientation.
Generally, improved summer performance is obtained from an angle of
inclination less than the optimum angle and improved winter performance is
obtained by an angle of inclination greater than the optimum angle. If the angle
of inclination varies by 20° from the optimum angle, the solar collectors will
receive about 10% less total annual solar radiation. The latitude of some
Australian cities are listed on page 11.
However, the optimum inclination of solar collectors is not always practical or
achievable. Solar collectors may be installed at the roof angle for simplicity of
installation and appearance, but must never be flat for a pumped solar open
circuit water heater installation. Although the solar collectors can be installed with
an inclination of less than 10°, this is not advised. The risks include:
the collector glass not 'self-cleaning', leading to dirty collector glass reducing
solar performance, and
condensation on the underside of the glass taking longer to clear, and
condensation droplets falling onto the absorber plate potentially causing
discolouration.
The collector kit is suitable for installations with an inclination of up to 30°.Where
the solar collectors are installed at inclinations greater than 30°, a With Pitch
frame is necessary. Refer to your local Solar Distributor for details.
A Variable Pitch frame can be installed to increase the angle of inclination of the
collectors used in a solar pumped water heater installation. This type of frame
should be used if the roof pitch either varies by more than 20° from the optimum
angle or is less than 10°.
The use of a Variable Pitch frame should be discussed with the system owner. If
this option is neither possible nor acceptable to the system owner, it may be
possible for an additional solar collector to be installed or to install selective
surface collectors in lieu of non-selective surface collectors to help make up for
the reduction in solar performance compared to the optimum inclination. Each
option should be discussed with the system owner.
If these options are neither possible nor acceptable to the system owner, then
the system owner needs to be made aware of, understand and accept that
increased boosting may be required to meet their hot water requirements.

INSTALLATION –SOLAR COLLECTORS
11
CYCLONIC OR HIGH WIND AREAS
For an installation of solar collectors on a pitched roof in a cyclonic or high wind
area, a suitable With Pitch frame is required. Refer to your local Solar Distributor
for details.
The installation of these solar collectors on a suitable frame, subject to the
frame’s design criteria not being exceeded:
may be suitable for installation in geographic locations up to and withinWind
Region D (With Pitch frame) or up to and within Wind Region C (Variable
Pitch frame), as defined in the Building Code of Australia, Australian
Standard AS 4055 and the Australian / New Zealand Standard
AS/NZS 1170.2, or equivalent locations, and
may provide an acceptable method of installation where it is necessary to
satisfy the requirements of the Building Code of Australia for high wind
areas, or equivalent requirements.
LATITUDE OF SOME AUSTRALIAN CITIES
Adelaide
35°S
Cairns
17°S
Hobart
42°S
Port Hedland
20°S
Alice Springs
24°S
Canberra
35°S
Mildura
34°S
Rockhampton
24°S
Brisbane
27°S
Darwin
12°S
Melbourne
38°S
Sydney
34°S
Broken Hill
31°S
Geraldton
28°S
Perth
32°S
Townsville
19°S

INSTALLATION –SOLAR COLLECTORS
12
PIPE LENGTHS
The solar hot and solar cold pipes between the solar storage tank and the solar
collectors shall:
be of bendable grade or hard drawn copper tube.
Annealed or soft copper shall not to be used.
have a continuous fall from the solar collectors to the solar storage tank.
Horizontal runs of pipe work are acceptable and may be installed as part of
an open circuit system.
Care must be taken to ensure the pipe work maintains a continuous fall or
horizontal runs over the life of the installation. Pipe work should be fixed at
regular intervals to assist in maintaining this requirement.
not exceed the maximum recommended combined lengths as specified in
the table.
Maximum recommended total combined pipe length (solar hot + solar cold)
and number of 90° bends
Pipe Size
1 or 2 Collectors
3 Collectors
4 Collectors
Pipe Length
90°
Bends
Pipe Length
90°
Bends
Pipe Length
90°
Bends
DN15
40 metres
20
30 metres
20
15 metres
20
DN20
NR
NR
40 metres
20
40 metres
20
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.
Notes:
It is important to connect the solar hot and solar cold pipes to the correct
connections at the solar collectors and at the solar storage tank.
The solar cold pipe connects to the bottom of the solar collector array and
may connect to either the left or right hand side. The solar hot pipe must
connect to the top of the solar collector array diagonally opposite to the solar
cold pipe connection. The solar hot outlet connection is to be the highest
point of the system.
The hot sensor connection is at the solar hot outlet where the solar hot pipe
connects to the solar collector for this open circuit system.
Refer to “Warning: Plumber – Be Aware” on page 13.
It is essential for these requirements to be followed for the system to operate
correctly and efficiently. Solar pipe work which is oversized, or is too long, or
does not have a continuous fall can result in a reduction in performance or the
system not operating effectively.

INSTALLATION –SOLAR COLLECTORS
13
WARNING: Plumber –Be Aware
The solar hot and solar cold pipes between the solar storage tank and the
solar collectors MUST BE of copper. All compression fittings must use
brass or copper olives.
The full length of the solar hot and solar cold pipes MUST BE insulated.
The insulation must:
be of a closed cell type or equivalent, suitable for a solar water heating
application and capable of withstanding temperatures of up to 150°C,
which may be generated by the solar collectors under stagnation
conditions
The specification of the chosen insulation material should be checked
with the insulation manufacturer prior to installation as different
materials may vary in temperature tolerance.
be at least 13 mm thick, however thicker insulation may be required to
comply with the requirements of either AS/NZS 3500.4 or
AS/NZS 3500.5:2012 Section 3 (for a Class 1a or Class 10 building) as
applicable under the Plumbing Code of Australia
be weatherproof and UV resistant if exposed
extend through any penetrations in the eaves, ceiling and roof
cover valves and fittings in the solar pipe work
be fitted up to and cover the connections on both the solar storage tank
and the solar collectors.
Note: Failure to observe these requirements also increases the risk
of freeze damage.
Uninsulated pipe work, including concealed in cavities and roof spaces or
where it may be in contact with a metal roof, may lead to freeze damage.
The system has NO WARRANTY for freeze damage if the solar hot and
solar cold pipes are not insulated in accordance with the installation
instructions.
The insulation is essential to assist in providing freeze protection, will offer
protection to a metal roof against corrosion due to water running off the
copper pipes, assist in avoiding accidental contact with the solar pipe work
as very high temperature water can flow from the solar collectors to the
solar storage tank, and also reduce pipe heat losses.

INSTALLATION –SOLAR COLLECTORS
14
WARNING: Plumber –Be Aware
The insulated copper pipe work:
should be fixed at suitable locations to prevent or reduce the possibility
of noise from water hammer and vibration from occurring
is not to be placed or installed in contact with plastic pipe work.
Likewise, plastic pipe work is not to be placed or installed in contact
with the insulated copper pipe work after the collector circuit is installed.
The solar hot outlet and hot sensor connection is to be the highest point of
the system. The highest point of the solar hot and solar cold pipes must be
where they connect to the solar collectors, to avoid the possibility of air
locks occurring in the system. There MUST BE a continuous fall in the
pipe work from the solar collectors to the solar storage tank. Horizontal
runs of pipe work are acceptable and may be installed as part of an open
circuit system.
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. Extremely high water temperatures up to 150°C for
non-selective surface collectors and greater than 200°C for selective
surface collectors and extremely high water pressures can be generated
under these conditions. 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.
The pressure applied to the collector circuit and solar collectors during a
pressure test of an open circuit system MUST NOT exceed 1000 kPa
where NPT200 solar collectors are installed, otherwise damage may
result.
Refer to “Pressure Testing” on page 16.
Upon completion of the installation of the NPT200 solar collectors the
packaging material may be removed, whether or not the collector circuit is
connected to the solar storage tank and / or the solar water heater is
commissioned.

INSTALLATION –SOLAR COLLECTORS
15
Maximum Height to Collectors
The maximum height of a pumped open circuit solar 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 collector 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 collector circuit may not be purged of air during the commissioning
of the system.
Open Circuit System
Pipe Work Installation Requirements

INSTALLATION –SOLAR COLLECTORS
16
Pressure Testing
The solar water heater, including the collector circuit, is to be isolated during the
testing and commissioning of the heated water reticulation system in a building
in accordance with Clause 9.3 (a) of AS/NZS 3500.4:2015 or Clause 3.34.2 (a)
of AS/NZS 3500.5:2012 for a Class 1a or Class 10 building as applicable under
the Plumbing Code of Australia. The collector circuit includes the solar hot and
solar cold pipes and solar collectors.
It may be necessary to pressure test the collector circuit to comply with codes
and regulatory authority requirements or on other occasions where the solar
collectors and solar hot and solar cold pipes are installed prior to the solar
storage tank, such as on a building site.
Collector Circuit
Warning: The pressure applied to the collector circuit during a pressure test
of an open circuit system MUST NOT exceed 1000 kPa where NPT200 solar
collectors are installed, otherwise damage may result to the solar collectors.
Open Circuit System
If the solar collectors, solar pipe work and solar storage tank are installed and
commissioned together, then the flooding of the collector circuit with water under
mains pressure for an open circuit system and checking the pipe work for leaks
during the commissioning procedure can be substituted for the pressure testing
of the collector circuit.

17
ROOF ASSEMBLY OF SOLAR COLLECTORS
Notes:
These solar collectors have passed the AS/NZS 2712 requirements for
resistance to hailstone damage, so it is not normally necessary to fit a guard
to a collector. Stone Guards are available to provide a level of protection to
the collectors against vandalism or accidental damage. Refer to your local
Solar Distributor for details.
Warranty DOES NOT cover breakage of solar collector glass. Check your
insurance policy covers collector glass breakage.
Warning: No attempt should be made to remove or replace broken
collector glass.
The collector glass is not offered as a replacement part. Should the solar
collector require replacement, contact your local Solar Distributor for details.
Warning: Do not remove the solar collector packaging completely, prior
to the installation as the solar collector surface can become very hot. Remove
only sufficient packaging material to enable the installation of the solar
collectors.
Upon completion of the installation of the NPT200 solar collectors, such as
on a building site, the packaging material may be removed whether or not the
collector circuit is connected to the solar storage tank and / or the solar water
heater is commissioned.
The solar collector packaging must be removed completely prior to the
permanent operation of the water heater.
All connectors, end plugs, ‘O’ rings, brass fittings, collector straps and
collector angle required for the installation are included with the collector kit.
Suitable screws or anchors will be required to fix the collector straps to the
rafters for a pitched roof installation.
Screws to secure the collector straps and collector angle to the solar
collectors must not be longer than 15 mm. Suitable screws are provided in
the collector kit.
All olive compression fittings must use brass or copper olives.
Use an approved thread sealant such as Teflon tape on all other threaded
joints. Fittings with an O-ring do not require a thread sealant.
Roof Condition: Check the condition of the roof and advise the client of any
broken tiles or damaged roof sheeting before commencing the installation.

ROOF ASSEMBLY OF SOLAR COLLECTORS
18
Numbers in parentheses refer to items in the diagrams on pages 31 (two solar
collector installation) and 32 (three or four solar collector installation).
DO NOT MODIFY THESE PARTS IN ANY WAY.
1. Solar Frame: If a solar frame is to be installed, determine the location of the
frame(s). Refer to “Solar Collector Location” on page 8 and the installation
instructions provided with the frame(s).
Assemble and fix the frame(s) to the roof in accordance with the installation
instructions provided with the frame.
Depending upon the positioning of the frame on the roof and any minor fall
the roof may have, ensure the collector rail is either horizontal or is higher
on the hot outlet side of the solar collectors. If in doubt use a spirit level.
Proceed to step 4.
2. Solar Collector Location: If a solar frame is not installed, select a suitable
position for the solar collectors.
Refer to “Solar Collector Location” on page 8.
3. Collector Angle –Pitched Roof Installation: Determine the location of the
collector angle(s) (1). If more than two solar collectors (17) are installed,
locate the collector angle(s) (1) from the Collector Add On kit(s) adjacent to
the first collector angle (1).
Hook two collector straps (2) to each bottom collector angle (1).
When positioned, the collector angle is to be either horizontal or have a rise
across the solar collectors from the solar cold connection side up to the solar
hot connection side for an open circuit system. The solar hot outlet and hot
sensor connection is to be the highest point of the system.
Note: Refer also to “Tile Roof with a flat tile profile” on page 18 if the
installation is on a tile roof where the tile has a flat profile. Additional
requirements for the positioning of the collector rail and installation of the
solar collectors apply.
Tile Roof with a flat tile profile: If the installation is on a tile roof with a flat
tile profile, the solar collectors (17) must be installed at an angle from the
horizontal to assist in rainwater runoff. The solar hot outlet side must be on
the left hand side and the solar cold inlet must be on the right hand side of
the collector array.
The top end of the solar collector on the solar cold inlet side must sit atop
the lower end of a tile lap. Measure down the roof approximately 1940 mm
from this point to determine the position of the bottom collector rail.

ROOF ASSEMBLY OF SOLAR COLLECTORS
19
Ensure the end of the collector angle (1) at the outlet side (left hand side) of
the solar collectors is higher up the roof than the end of the collector angle
at the inlet side (right hand side) of the solar collectors by:
15 –20 mm for one solar collector, or
30 –40 mm for two solar collectors, or
45 –60 mm for three solar collectors.
This is to provide a downward angle along the top end of the collectors to
assist in rainwater runoff in order to prevent pooling.
Flat Tile Profile –Collector Angle From Horizontal
Failure to adhere to this requirement may result in pooling of rainwater at
the top of the collectors. If the top end of the collector array is too close to
the lap of the tiles, there is a risk of pooling water seeping up and under the
tile lap. The rainwater runoff is to flow from left to right to reduce the risk of
water working through the joints between tiles.
Tile Roof: Remove the tiles on the next row above the position of the
collector angle (1) to expose the rafters. Position the collector angle (1) and
fix the collector straps (2) directly to the rafters, using suitable screws or
anchors. Replace the tiles.
Metal Roof: Once the collector angle (1) is in position, fix the collector
straps (2) to the rafters, through the metal roofing material, using suitable
screws or anchors. Care should be taken not to mark Colorbond or other
metal roof sheet with a marking pen and to remove all swarf from the metal
roof as these can cause deterioration of the metal roofing material.
Horizontal
Horizontal
Solar Hot
Outlet
Position top
of collector
as low as
practical
on roof tile
Solar Hot
Outlet
Horizontal
Position top
of collector
as low as
practical
on roof tile
FOLDED TRAY COLLECTORS
ANGLE RAIL
FOLDED TRAY COLLECTORS
EXTRUDED RAIL
ENVELOPE COLLECTORS
EXTRUDED RAIL
30-40mm
from
horizontal
15-20mm
from horizontal
30-40mm
from
horizontal
Solar Hot
Outlet
Solar Cold Inlet
15-20mm
from horizontal Solar Cold Inlet
15-20mm
from horizontal
COLLECTOR INSTALLATION - FLAT PROFILE ROOF TILE
Solar Cold Inlet
30-40mm
from
horizontal
Position top
of collector
as low as
practical
on roof tile
SK7776 A4
REV AD 7/16

ROOF ASSEMBLY OF SOLAR COLLECTORS
20
Note: Fixings must penetrate only through the high point in the roof material
profile. AS/NZS 3500.4 states a minimum of three (3) screws 40 mm long
be used per fixing strap. Longer screws or anchors may be required to
achieve a 40 mm minimum embedment into rafters for a metal roof.
Additional screws or anchors may be required.
4. Solar Collectors: Using a lifting device, lift the first solar collector (17) onto
the roof and place it carefully with the lower end seated in the collector
angel (1) and prior to positioning the next solar collector, screw the collector
angle (1) to the solar collector (17) using one of the screws (13) provided.
Repeat this procedure for additional collectors (17), screwing the collector
angle (1) to the solar collector (17) using one of the screws (13) provided.
Solar Frame Installation: Using a lifting device, lift the first solar collector (17)
onto the roof and place it carefully with the lower end seated in the collector
rail (1) and prior to positioning the next solar collector, firmly clamp (two
clamps per collector) to the collector rail using the clamps, hex screws,
washers and nuts provided.
Repeat this procedure for additional collectors (17), firmly clamping each
collector to the collector rail (1) with two clamps (13) prior to positioning a
subsequent collector.
Note: Screwing or firmly clamping each solar collector to the collector rail
as it is placed in position reduces the possibly of the collector(s) accidently
moving or sliding off the collector rail.
Remove the red transit plugs from the collector sockets.
5. Collector Unions: Couple the solar collectors (17) together using the
collector unions (3) and ‘O’ rings (6) supplied in the collector kit.
Refer to “Coupling Collector to Collector – Screwed Fittings”on page 25.
Note: It will be necessary to remove the screw or loosen the clamps on a
collector prior to it being coupled to its adjacent collector. Secure the screw
or the clamps again on each collector after it is coupled to the adjacent
collector.
6. Fixing Collector (bottom): Ensure the solar collectors (17) are correctly
positioned, centred and well seated in the collector angle (1).
Pitched Roof Installation: Screw the collector angle (1) to the solar
collectors (17) (two screws per collector), using the screws (13) provided.
Solar Frame Installation: Tighten the clamps (13) on each solar
collector (17).