Rheem NPT 200 User manual

This collector kit must be installed and serviced by an authorised person.
Please leave this guide with the householder.
Installation Instructions
Collector Kit
Collectors with Screwed Fittings
NPT200 SOLAR COLLECTOR
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.

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 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 AS/NZS 3500.4
be weatherproof and UV resistant if exposed
extend through any penetrations in the eaves, ceiling and roof
cover valves and fittings in the solar hot and solar cold pipe work
be fitted up to and cover the connections on both the solar storage
tank and the solar collectors.
The insulation will offer corrosion protection to a metal roof against water
runoff over the copper pipe, assist in avoiding accidental contact with the
solar pipe work as high temperature 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 9.

3
CONTENTS
HOUSEHOLDER - This installation instruction booklet is
intended for the installer but you may find it of interest.
Components And Kit Contents ..................................................4
Installation –Solar Storage Tank...............................................5
System Installation......................................................................5
Solar Collector Location.............................................................6
Roof Assembly Of Solar Collectors.........................................13
Connection Details....................................................................21
Pipe Work Roughing In Dimensions........................................26
Installation –Solar Collectors..................................................28
Warranty Note............................................................................31

4
COMPONENTS AND KIT CONTENTS
SOLAR COLLECTOR KITS –SCREWED FITTINGS
For installation with a solar storage tank with a drain back heat exchanger.
The 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 kit is
suitable for:
Collector Kit –Screwed Fittings (2 solar collectors)
12105000 NPT200 solar collectors
Part No
Kit Components and Description
12105000
two collectors
347547
Installation instructions roof kit 2NPT drain back
1
331846
Collector rail (1650 mm long)
2
330847
Collector straps
4
331928
Collector clamps
8
330350
Hex screw set S/S 5/16” x 3/4”
8
330354
Washer S/S 5/16”
8
330806
Nut S/S 5/16”
8
345096
Silicone rubber washer 31 x 22.5 x 2.0 mm
8
330695
Collector connector assembly L M33
2
063603
Connector M33 - NPT
2
331656
Olive ½” copper
2
331655
Compression nut ½”
2
330600
Gland nut L collector M33 M
1
330606
Blanking disc copper
1
340441
Hot sensor housing –temperature well M33
1
346080
Hot sensor assembly drain back
1
123204
Label hot pipe / cold pipe
1
348071
Cable ties 150 mm long
10

5
INSTALLATION –SOLAR STORAGE TANK
THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING.
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 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 6 and to “Pipe Lengths” on page 8.
Refer to the installation instructions supplied with the solar storage tank for
installation details of the solar storage tank.
SYSTEM INSTALLATION
INDIRECT CLOSED CIRCUIT SYSTEM INSTALLATION
The system is suitable for installation with NPT200 solar collectors as part of an
indirect closed circuit system installation.
An indirect closed circuit system has a collector circuit which is separate from
the potable water in the solar storage tank. Closed circuit fluid circulates
through and collects heat from the solar collectors before circulating through a
heat exchanger, where the heat is transferred to the potable water of the solar
storage tank.
The system is suitable for installation in areas subject to frost or freeze
conditions. The solar circuit must be installed with a continuous fall of a
minimum 5° (1 in 10 grade) in the pipe work from the solar collector to the solar
storage tank, with the full length of the solar hot and solar cold pipes insulated
and the system charged with correctly mixed closed circuit fluid to offer
protection against freeze damage. (refer to “Warning: Plumber Be Aware” on
page 9). Freeze conditions occur below 6°C.
The system has NO WARRANTY for freeze damage if there is not a continuous
fall in the solar hot and solar cold pipes, or they are not insulated in accordance
with the installation instructions, or the closed circuit fluid has been incorrectly
mixed (refer to “Warranty Note” on page 31).

6
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 Storage Tank Location” on
page 5 and to “Pipe Lengths” on page 8.
The solar collectors must be installed in a shade free position.
The solar collectors are to be installed
facing toward the equator (i.e. north
facing in the southern hemisphere and
south facing in the northern
hemisphere). Where this orientation is
not practical, a system facing up to 45°
from the equator will have its efficiency
reduced by approximately 4%.
Inclination of the solar collectors should
be approximately equal to 90% of the
local latitude angle. The latitude of
some Australian cities are listed on
page 7. Solar collectors may be
installed at the roof angle for simplicity
of installation and appearance, but must
never be less than 10° from the
horizontal for an indirect closed circuit
drain back system. If the roof angle
varies by 15° from the correct angle,
efficiency will be reduced by 10%.
For a solar collector installation on a roof with a pitch less than 10°, a
Variable Pitch stand is required. Refer to your local Solar Distributor for
details.
For an installation at right angles to (across) the roof pitch, a Flat Roof stand
and an Across Pitch kit are both required. Refer to your local Solar
Distributor for details.
For an installation opposite to (against) the roof pitch, a Flat Roof stand and
an Against Pitch kit are both required. Refer to your local Solar Distributor
for details.
For an installation of collectors in a cyclonic or high wind area, a suitable
With Pitch frame (cyclone frame) is required. Refer to your local Solar
Distributor for details.

SOLAR COLLECTOR LOCATION
7
The installation of these solar collectors on a suitable cyclone frame, subject
to the frame‟s design criteria not being exceeded:
is suitable for installation in geographic locations within Wind Regions C
and D as defined in the Building Code of Australia, Australian / New
Zealand Standard AS/NZS 1170.2:2002 and the Australian Standard
AS 4055-2006, and
also provides an acceptable method of installation where it is necessary
to satisfy the requirements of the Building Code of Australia and
AS/NZS 3500.4 Clause 6.5.3.4 for high wind areas.
The collector kit is suitable for installations with an inclination of up to 45°.
Where the solar collectors are installed at inclinations greater than 45°, a
With Pitch frame is necessary. Refer to your local Solar Distributor for
details.
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. If in doubt the roof
structure should be suitably strengthened. Consult a structural engineer.
Each solar collector and its fittings weighs approximately 40 kg when full of
water.
Refer to the installation instructions supplied with the solar storage tank for
details on the installation of the solar storage tank.
Roof area required for solar collectors:
2 solar collectors –2.3 m wide x 2.0 m deep. Weight (full) 80 kg approx.
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

SOLAR COLLECTOR LOCATION
8
PIPE LENGTHS
The solar hot and solar cold pipes between the solar storage tank and the solar
collectors shall:
be of DN15 bendable grade or hard drawn copper tube.
Annealed or soft copper shall not be used.
have a continuous fall from the solar collectors to the solar storage tank of
5° (1 in 10 grade) in an indirect closed circuit system.
not exceed the maximum recommended lengths as specified in the table.
Maximum recommended total combined pipe length (solar cold + solar hot)
and number of 90° bends
Pipe Size
2 Collectors
Pipe Length
90° Bends
DN15
NR
NR
For each additional 90° bend, reduce the maximum total pipe length by 0.5 m.
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 not to cross connect the solar cold and solar hot pipes to the
incorrect connections at the solar collectors and at the solar storage tank.
The solar cold pipe connects to the bottom of the solar collector and may
connect to either the left or right hand side. The solar hot pipe must connect
to the top of the solar collector diagonally opposite to the solar cold pipe
connection.
The lowest corner of the solar collector installation in an indirect closed
circuit system, which is where the solar cold pipe connects to the collector
array, should be the corner closest to the solar storage tank. This will
maximise the gradient for the continuous fall of the solar cold pipe, by
providing a shorter horizontal run of pipe work for the vertical fall.
The hot sensor connection is at the top of the solar collector, directly above
the solar cold inlet connection.
Refer to “Warning: Plumber – Be Aware” on page 9.
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 the correct fall can result in a reduction in performance or the
drain back system not operating effectively.

SOLAR COLLECTOR LOCATION
9
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 AS/NZS 3500.4
be weatherproof and UV resistant if exposed
extend through any penetrations in the eaves, ceiling and roof
cover valves and fittings in the solar hot and solar cold pipe work
be fitted up to and cover the connections on both the solar storage
tank and the solar collectors.
The insulation will offer corrosion protection to a metal roof against water
runoff over the copper pipe, assist in avoiding accidental contact with the
solar pipe work as high temperature water can flow from the solar
collectors to the solar storage tank and also reduce pipe heat losses.
The highest point of the solar cold pipe and solar hot pipe must be where
they connect to the solar collector. There MUST BE a continuous fall of a
minimum 5° (1 in 10 grade) in the pipe work between the solar collector
and solar storage tank for efficient and effective drain back to occur.
The system has NO WARRANTY for freeze damage if there is not a
continuous fall in the solar hot and solar cold pipes, or they are not
insulated in accordance with the installation instructions, or the closed
circuit fluid has been incorrectly mixed.

SOLAR COLLECTOR LOCATION
10
WARNING: Plumber –Be Aware
Plastic pipe MUST NOT be used, as it will not withstand the temperature
of the closed circuit fluid generated by the solar collectors under
stagnation conditions. The solar collectors can generate extremely high
closed circuit fluid temperatures of up to 150°C. Plastic pipe cannot
withstand these temperatures and MUST NOT be used. Failure of plastic
pipe can lead to the release of high temperature closed circuit fluid and
cause severe water damage and flooding.
Caution: Do not over tighten fittings as the rubber washer may not seal
properly. Maximum tightening torque is 15 Nm. Tighten fittings by hand
and then add an additional half turn with spanner.
The pressure applied to the solar circuit and solar collectors during a
pressure test of an indirect closed circuit system MUST NOT exceed
200 kPa, otherwise damage may result to the solar collectors. Refer to
“Pressure Testing” on page 12.
Upon completion of the installation of the NPT200 solar collectors the
packaging material may be removed, whether or not the solar circuit is
connected to the solar storage tank and / or the solar water heater is
commissioned.
Maximum Number of Collectors
The maximum recommended number of collectors for the tank size are:
160 litre tank –2 x NPT200 collector

SOLAR COLLECTOR LOCATION
11
Maximum Height to Collectors –Indirect Closed Circuit
The solar collectors must be the highest point of the system. The maximum
height of the solar installation, from the base of the solar storage tank to the top
of the solar collectors, is 7.5 m. The pump supplied will not circulate closed
circuit fluid through heights greater than 7.5 m and solar gain will not be
achieved.
An additional or auxiliary pump cannot be added to this system, nor can the
pump supplied with the system be replaced with another pump, to increase the
maximum height of the system.
Note: The top of the solar storage tank must be a minimum of 500 mm below
the bottom of the solar collectors for the system to operate correctly.
Indirect Closed Circuit Drain Back Solar
Pipe Work Installation Requirements

SOLAR COLLECTOR LOCATION
12
Pressure Testing
The solar water heater, including the collector circuit and solar collectors, is to
be isolated during the testing and commissioning of the heated water
reticulation system in a building, in accordance with Clause 11.1 and 11.3 (a) of
AS/NZS 3500.4.
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 cold and solar hot pipe work are installed prior to the solar
storage tank, such as on a building site.
Indirect Closed Collector Circuit
Warning: The pressure applied to the solar circuit and solar collectors
during a pressure test of an indirect closed circuit system MUST NOT exceed
200 kPa, otherwise damage may result to the solar collectors. The solar circuit
and solar collectors are to be isolated from the solar storage tank for the
duration of the pressure test.
Indirect Closed 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 closed
circuit fluid for an indirect closed circuit system and checking the pipe work for
leaks during the commissioning procedure can be substituted for the pressure
testing of the collector circuit.

13
ROOF ASSEMBLY OF SOLAR COLLECTORS
Notes:
All plumbing work be carried out by an authorised person and the
installation must comply with National Standard AS/NZS 3500.4 and all
local codes and regulatory authority requirements. In New Zealand, the
installation must conform with Clause G12 of the New Zealand Building
Code.
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 the
packaging material may be removed, whether or not the solar circuit is
connected to the solar storage tank and / or the solar water heater is
commissioned.
All connectors, unions, end plugs, brass fittings, collector straps and
collector rails 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.
Clamps, screws, nuts and washers to secure the solar collectors to the
collector rails are included with the collector kit.
All olive compression fittings must use brass or copper olives. Use thread
sealing tape or an approved thread sealant on all fittings.

ROOF ASSEMBLY OF SOLAR COLLECTORS
14
Numbers in parentheses refer to items in the diagram on page 28 for a two
solar collector installation.
DO NOT MODIFY THESE PARTS IN ANY WAY
1. Solar Collector Location: Select a suitable position for the solar
collectors. Refer to “Solar Collector Location” on page 6.
2. Collector Rail (bottom) –Pitched Roof Installation: Determine the
location of the bottom collector rail (1).
Hook two collector straps (2) to the bottom collector rail (1).
Refer to Detail F on page 25.
Note: The solar collectors must be installed at an angle from the
horizontal. Ensure the end of the collector rail at the outlet side of the solar
collectors is between:
20 –30 mm (for two solar collectors)
higher up the roof from the horizontal than the end of the collector rail at
the inlet side of the solar collectors. This is to ensure there is sufficient
angle:
for the hot sensor housing to be completely surrounded by closed
circuit fluid when the pump is on, and
to assist in complete drain back of closed circuit fluid from the solar
collectors in an indirect closed circuit system
Failure to adhere to this requirement may result in both an air pocket
surrounding the hot sensor housing during the pumping cycle resulting in
an incorrect hot sensor operation and incomplete drain back of closed
circuit fluid when the pump deactivates.
If the roof material is not even where the collectors are to be installed, then
it may be necessary to add 10 mm for each collector in the array to the
above distances. It is important that the solar hot outlet is higher than the
hot sensor housing so the system functions efficiently.

ROOF ASSEMBLY OF SOLAR COLLECTORS
15
10-15mm
from horizontal
20-30mm
from horizontal
Solar Hot Pipe
Connection
Hot Sensor
Connection
Solar Cold Pipe
Connection
horizontal
10-15mm
from horizontal
20-30mm
from horizontal
Solar Hot Pipe
Connection
Hot Sensor
Connection
Solar Cold Pipe
Connection
SOLAR DRAINBACK COLLECTOR INSTALLATION
COLLECTOR RISE FROM HORIZONTAL - 2 x COLLECTORS
SK6904-1
Sheet 1 A4
05/10 REV-AD
NOTES:
- If the roof material is not even where the
collectors are to be installed, then it may
be necessary to add 10mm for each collector
in the array to these distances.
- The lowest corner of the solar collector installation
should be the corner closest to the solar storage tank.
NOTES:
- If the roof material is not even where the
collectors are to be installed, then it may
be necessary to add 10mm for each collector
in the array to these distances.
- The lowest corner of the solar collector installation
should be the corner closest to the solar storage tank.
10-15mm
from horizontal
20-30mm
from horizontal
Solar Hot Pipe
Connection
Hot Sensor
Connection
Solar Cold Pipe
Connection
horizontal
10-15mm
from horizontal
20-30mm
from horizontal
Solar Hot Pipe
Connection
Hot Sensor
Connection
Solar Cold Pipe
Connection
SOLAR DRAINBACK COLLECTOR INSTALLATION
COLLECTOR RISE FROM HORIZONTAL - 2 x COLLECTORS
SK6904-1
Sheet 1 A4
05/10 REV-AD
NOTES:
- If the roof material is not even where the
collectors are to be installed, then it may
be necessary to add 10mm for each collector
in the array to these distances.
- The lowest corner of the solar collector installation
should be the corner closest to the solar storage tank.
NOTES:
- If the roof material is not even where the
collectors are to be installed, then it may
be necessary to add 10mm for each collector
in the array to these distances.
- The lowest corner of the solar collector installation
should be the corner closest to the solar storage tank.
Collector Angle From Horizontal
The lowest corner of the solar collector installation in an indirect closed
circuit system, which is where the solar cold pipe connects to the collector
array, should be the corner closest to the solar storage tank. This will
maximise the gradient for the continuous fall of the solar cold pipe, by
providing a shorter horizontal run of pipe work for the vertical fall.

ROOF ASSEMBLY OF SOLAR COLLECTORS
16
Tile Roof: Remove the tiles on the next row above the position of the
collector rail (1) to expose the rafters. Ensure the collector rail (1) is at the
correct angle from the horizontal. Once in position, fix the collector
straps (2) to the rafters, using suitable screws or anchors. Replace the
tiles.
Metal Roof: Ensure the collector rail (1) is at the correct angle from the
horizontal. Once 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.
Note: Fixings must penetrate only through the high point in the roof
material profile.
Solar Stand –Across Pitch or Against Pitch Installation: Determine
the location of the Across Pitch stand and Flat Roof stand or the Against
Pitch stand and Flat Roof stand. Assemble and fix the stands to the roof,
following the instructions provided with the stands. Ensure the collector
rail (1) is at the correct angle from the horizontal to achieve the required
fall across the solar collectors.
Solar Stand –Flat Roof Installation: Determine the location of the
variable pitch stand. Assemble and fix the stand to the roof, following the
installation instructions provided with the stand. Ensure the collector
rail (1) is at the correct angle from the horizontal to achieve the required
fall across the solar collectors.
3. Solar Collectors: Position the solar collectors (17) in the correct
configuration with the lower ends seated in the collector rail (1).
4. Collector Unions: Couple the solar collectors (17) together using the
collector unions (3) supplied in the collector kit.
Refer to “Coupling Collector to Collector –Screwed Fittings” on page 21.
5. Fixing Collector (Bottom): Ensure the solar collectors (17) are well
seated in the collector rail (1).
Pitched Roof Installation and Solar Stand –Flat Roof Installation: Clamp
the solar collectors (17) (two clamps per collector) to the collector rail (1),
using the clamps (13), hex screws, washers and nuts provided.
Refer to “Clamping Collector to Collector Rail” on page 22.

ROOF ASSEMBLY OF SOLAR COLLECTORS
17
6. Collector Rail (top) –Pitched Roof Installation: Locate the second
collector rail (1) against the top end of the solar collectors.
Hook two collector straps (2) to each collector rail (1).
Refer to Detail G on page 25.
Tile Roof: Remove the tiles on the next row above the position of the top
collector rail (1) to expose the rafters. Once in position, fix the collector
straps (2) to the rafters, using suitable screws or anchors. Replace the
tiles.
Metal Roof: Once in position, fix the collector straps (2) to the rafters,
through the metal roofing material, using suitable screws or anchors. The
collector straps (2) may be cut to a length of approximately 100 mm to
retain the aesthetics of the installation.
Note: Fixings must penetrate only through the high point in the roof
material profile.
7. Fixing Collector (Top): Ensure the solar collectors (17) are well seated in
the collector rail (1).
Pitched Roof Installation and Solar Stand –Flat Roof Installation: Clamp
the solar collectors (17) (two clamps per collector) to the collector rail (1),
using the clamps (13), hex screws, washers and nuts provided.
Refer to “Clamping Collector to Collector Rail” on page 22.
8. Connectors: Fit a connector (10) to the inlet of the solar collector array
and a connector (10) to the outlet of the solar collector array.
Refer to “Coupling Cold and Hot Pipes to Collector – Screwed Fittings” on
page 22.
9. Hot Sensor Housing: Fit the hot sensor housing (4) to the collector
connection above the inlet and opposite to the outlet of the solar collector
array.
Refer to “Hot Sensor Housing Assembly – Screwed Fittings” on page 21.

ROOF ASSEMBLY OF SOLAR COLLECTORS
18
10. End Plug: Fit the end plug (5) to the collector connection opposite the inlet
connection and below the outlet of the solar collector array.
Refer to “End Plug Assembly – Screwed Fittings” on page 21.
11. Solar Cold and Solar Hot Pipes: Install the solar cold pipe from the solar
storage tank to the solar collectors (17) and the solar hot pipe from the
solar collectors (17) to the solar storage tank.
The solar hot and solar cold pipes must be of DN15 bendable grade or
hard drawn copper and have a continuous fall from the solar collectors to
the solar storage tank. The fall must not be less than 5° (1 in 10 grade) for
an indirect closed circuit system. Refer to “Pipe Lengths” on page 8.
The full length of the solar hot and solar cold pipes must be insulated. The
insulation must be capable of withstanding the temperatures generated by
the solar collectors under stagnation conditions.
Warning: Plumber –Be Aware: It is important you refer to “Warning:
Plumber –Be Aware” on page 9 for further and important information
relating to the installation of the solar hot and solar cold pipes.
Refer also to installation diagram page 28 and to “Pipe Work Roughing In
Dimensions” on page 26.
Notes:
Penetrations through the roofing material must be:
■at the high point of the roof tile or metal sheet
■made neatly and kept as small as practicable
■waterproofed upon installation of the solar hot and solar cold
pipes.
Exposed insulated pipe work between the solar collectors and the
penetration through the roofing material should be kept to a minimum
to maintain the aesthetics of the installation.
12. Connecting the Solar Cold and Solar Hot Pipes to Collectors: Connect
the solar cold pipe to the connector (10) at the inlet of the solar
collectors (17) and the solar hot pipe to the connector (10) at the outlet of
the solar collectors (17) using the compression nuts (11) and olives (12)
provided.
Refer to “Coupling Cold and Hot Pipes to Collector – Screwed Fittings” on
page 22 and the installation diagram on page 28.

ROOF ASSEMBLY OF SOLAR COLLECTORS
19
13. Hot Sensor Lead: Insert the sensor probe of the hot sensor lead
assembly (9) into the sensor housing (4), ensuring the sensor probe is
pushed all the way up to the end of the sensor housing (4). Lock it into
position with the locking washer and clip provided.
Run the hot sensor lead down to the solar storage tank and connect to the
hot sensor cable connecting plug located on the jacket to the left of the
front cover of the solar storage tank. An extension sensor lead is available
if the hot sensor lead is not long enough to reach the solar storage tank.
14. Cable Ties: Secure the hot sensor lead at appropriate locations with the
cable ties (14) provided.
15. Labels: At ground or floor level, above the location of the solar storage
tank, attach the „Solar Cold Pipe‟ label (16) to the insulation on the solar
cold pipe to the solar collectors and the „Solar Hot Pipe‟ label (15) to the
insulation on the solar hot pipe from the solar collectors.
Ensure the arrows on the labels are pointing in the correct direction of
closed circuit fluid flow.
16. Pressure Testing the Collector Circuit: Upon completion of the solar
collector and solar cold and solar hot pipe installation, it may be required
to pressure test the collector circuit. Refer to “Pressure Testing” on
page 12.
17. Connecting the Solar Cold and Solar Hot Pipes to the Solar Storage
Tank: Refer to “Connections – Plumbing” in the Owner‟s Guide and
Installation Instructions supplied with the solar storage tank for details on
the solar cold and solar hot pipe connections to the solar storage tank.
18. Commissioning: Upon completion of the installation, refer to the Owners
Guide and Installation instructions supplied with the solar storage tank for
the commissioning procedure of the solar water heater.

ROOF ASSEMBLY OF SOLAR COLLECTORS
20
INSTALLATION CHECK LIST
Once the installation is complete, it is important to check the following:
The outlet side of the collector array is between:
20 –30 mm (for two solar collectors)
higher up the roof than the inlet side of the collector array and that the solar
hot outlet is higher than the hot sensor housing. If in doubt use a spirit level.
Maximum recommended total combined solar cold and solar hot pipe length
is not exceeded.
Solar cold and solar hot pipe work is insulated in accordance with the
installation instructions.
The pipe work at the connectors is orientated downward, below the collector
connection, to ensure complete drain back of the closed circuit fluid from the
solar collectors in an indirect closed circuit system.
The solar hot and solar cold pipes grade downwards with a continuous fall
of not less than 5° (1 in 10 grade) from the solar collectors to the storage
tank for an indirect closed circuit system. If in doubt use a spirit level.
Maximum height from the base of the storage tank to the top of the solar
collectors is not exceeded.
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