Rheem 180 Owner's Manual And Installation Instructions
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Rheem 180 Owner's Manual And Installation Instructions

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Owner's Guide
and
Installation Instructions
Solar Thermosiphon Water Heater
Stainless Steel Tanks
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.
This water heater must be installed and serviced by a qualified person.
Please leave this guide with the householder or responsible officer.

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Summary of Contents for Rheem 180

  • Page 1 Owner’s Guide Installation Instructions Solar Thermosiphon Water Heater Stainless Steel Tanks 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.
  • Page 2 The solar water heater 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 3500.4:2021. An electronic copy of these Owner’s Guide and Installation Instructions can be downloaded from rheem.com.au. PATENTS This water heater may be protected by one or more patents or registered designs in the name of Rheem Australia Pty Ltd.

  • Page 3: Table Of Contents

    Rheem warranty. We recommend you read pages 8 to 24, and the terms of the Rheem warranty on pages 4 to 7. The other pages are intended for the installer but may be of interest.

  • Page 4: Warranty

    The decision of whether to repair or replace a faulty component is at Rheem’s sole discretion. If you require a call out and we find that the fault is not covered by the Rheem warranty, you are responsible for our standard call out charge. If you wish to have the relevant component repaired or replaced by Rheem, that service will be at your cost.
  • Page 5 3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT Rheem will repair or replace a faulty component of your water heater if it fails to operate in accordance with its specifications as follows:...
  • Page 6 RHEEM SOLAR THERMOSIPHON WATER HEATER WARRANTY – AUSTRALIA ONLY SOLAR THERMOSIPHON WATER HEATER SYSTEMS – 52L, 52H The period from the date What components of installation in which What coverage are covered the fault must appear in you receive order to be covered...
  • Page 7 You are also entitled to have the goods repaired or replaced if the goods fail to be of acceptable quality and the failure does not amount to a major failure. The Rheem warranty (set out above) is in addition to any rights and remedies that you may have under the Australian Consumer Law.

  • Page 8: Safety, Warnings, Installation Notes

    For continued safety of this water heater it must be installed, operated and maintained in accordance with the Owner’s Guide and Installation Instructions. • Servicing of a water heater must only be carried out by qualified personnel. Phone Rheem Service or their nearest Accredited Service Agent.
  • Page 9 SAFETY, WARNINGS, INSTALLATION NOTES • The lever on the temperature pressure relief valve and expansion control valve requires to be operated every six (6) months to clear any deposits and to ensure the valve and its drain line are not blocked. “Relief Valves”...
  • Page 10 Refer to page 17. If the relief valve easing lever is not readily and safely accessible, contact Rheem Service or their nearest Accredited Service Agent. Do not attempt to climb onto a non-trafficable roof to operate the relief valve lever.

  • Page 11: About Your Water Heater

    SOLAR OPERATION The Rheem solar thermosiphon system has its stainless steel solar storage tank installed on the roof directly coupled to the solar collectors. The 52L series are direct solar hot water systems and the 52H series are indirect solar hot water systems with a heat exchanger in the solar storage tank.
  • Page 12 “Booster Control” heating unit. Refer to on page 14. Rheem recommends the thermostat is set at 60°C to maximise solar contribution. Note: AS 3498 requires that a water heater provides the means to inhibit the growth of Legionella bacteria in potable water.
  • Page 13 If a lower temperature protection is anticipated, additional Coolblend concentrate will be required to provide a greater concentration in the closed circuit fluid. The system has NO WARRANTY for freeze damage if non Rheem approved closed circuit fluid has been used “Terms of the Rheem Warranty”...
  • Page 14 AS 3498. The amount of water heated by the raised booster heating unit of the solar storage tank will be 150 litres (300 litre model), or 90 litres (180 litre model). Timer Control Switch...
  • Page 15 ABOUT YOUR WATER HEATER RAINWATER COLLECTION SYSTEM If the 52H series solar water heater is installed on a section of roof which is part of a rainwater collection system, then it is recommended this section of roof and its gutter be isolated from the rainwater collection system.
  • Page 16 ABOUT YOUR WATER HEATER VICTORIAN CUSTOMERS Notice to Victorian Customers from the Victorian Building Authority. 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.

  • Page 17: Maintenance Requirements

    It is recommended a major service be conducted on the water heater every five (5) years. Warning: Servicing of a water heater must only be carried out by a qualified person. Phone Rheem Service or their nearest Accredited Service Agent.
  • Page 18 Have any trees trimmed which may shade the solar collectors. Rheem 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.

  • Page 19: Water Supplies

    Where the pH is less than 6.0 the Rheem warranty does not apply to a stainless steel cylinder or a heat exchanger in a 52H cylinder. Water with a pH less than 6.0 may be treated to raise the pH.
  • Page 20 A corrosion resistant heating and an indirect solar water heater must be used unit must be used for the Rheem warranty to apply to the heating unit and solar collector. This water heater is supplied fitted with a corrosion resistant heating unit.
  • Page 21 The water heater and its components are not suitable for certain water chemistries. Those chemistries are listed below. If the water heater is connected at any time to a water supply with the following water chemistry, the Rheem warranty will not cover any resultant faults on the components listed below: Water Chemistry Component Chloride >...

  • Page 22: Save A Service Call

    Warning: Hotter water increases the risk of scald injury. • Water heater size Do you have the correct size water heater for your requirements? The sizing guides in the sales literature and on the Rheem website (www.rheem.com.au) suggest average sizes that may be needed.
  • Page 23 10). This may dislodge a small particle of foreign matter and clear the fault. Release the lever gently. If the relief valve lever is not readily and safely accessible, contact Rheem Service or their nearest Accredited Service Agent. Do not attempt to climb onto a non trafficable roof to operate the relief valve lever.
  • Page 24 (OTP) system installed. COLLECTOR GLASS The Rheem warranty DOES NOT cover breakage of solar collector glass. Check your household insurance policy covers collector glass breakage. Warning: No attempt should be made to remove or replace broken collector glass.

  • Page 25: Installation

    • 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 Rheem warranty. • All packaging materials must be removed from the solar storage tank prior to its installation. Refer to the warning on page 46 in relation to the removal of the solar collector packaging.
  • Page 26 INSTALLATION INSTALLATION STANDARDS The water heater must be installed: • by a qualified person, and • in accordance with the installation instructions, and • in compliance with the Plumbing Code of Australia (PCA), Standards AS/NZS 3500.4 and AS/NZS 3000, and all local codes and regulatory authority requirements. In New Zealand, the installation must conform with Clause G12 of the New Zealand Building Code.
  • Page 27 Refer to on page 65. The system has NO WARRANTY for freeze damage if non Rheem approved closed circuit fluid has been used “Terms of the Rheem Warranty” or if the closed circuit fluid has been incorrectly mixed (refer to on page 4).
  • Page 28 Where the mains water supply pressure exceeds that shown in the table below, an approved pressure limiting valve is required and should be fitted as shown in the cold water connection diagram on page 56. Model 180, 300 Temperature pressure relief valve setting 850 kPa Expansion control valve setting * 700 kPa...
  • Page 29 INSTALLATION HOT WATER DELIVERY This water heater can deliver hot water at temperatures which on occasion could exceed 75°C and even reach up to 95°C. These temperatures are sufficiently hot to cause severe scalding. Water at this temperature may be plumbed to fixtures where water hotter than 50°C is allowed, such as the kitchen and laundry, after ensuring all pipe work, fixtures and fittings are suitable for at least 95°C.
  • Page 30 INSTALLATION Two Temperature Zones Using a Temperature Limiting Device – Indirect Solar Water Heater CIRCULATED HOT WATER FLOW AND RETURN SYSTEM A solar water heater should not be installed as part of a circulated hot water flow and return system in a building.
  • Page 31 INSTALLATION If the in-series water heater is a continuous flow water heater, the circulator must be: • sized and set to provide a minimum flow rate of 3.0 L/min through the circulated hot water flow and return system, and • either thermostatically and / or timer controlled.
  • Page 32 Note: If the cylinder is damaged as a result of attaching pipe clips or saddles to the jacket, any resultant faults will not be covered by the Rheem warranty. BOOSTER HEATING UNIT The booster heating unit is for heating the water at times of low solar energy gain, such as during very cloudy “Connections –...
  • Page 33 INSTALLATION DIMENSIONS AND TECHNICAL DATA 180 System 300 System Direct System Data Solar Storage Tank Solar Collectors Parts Kit System Nominal Empty Direct Full Empty Full Weight Full Type Model Capacity (kg) Model System (kg) (kg) (kg) (kg) (kg) (litres)
  • Page 34 INSTALLATION Indirect System Data Parts Solar Storage Tank Solar Collectors System Nominal Empty Indirect Full Empty Full Weight Full Type Model Capacity (kg) Model System (kg) (kg) (kg) (kg) (kg) (litres) cartoned NPT200 52H180/1 closed 52H180 NPT or L or CS07 circuit CSA2007 NPT200...
  • Page 35 INSTALLATION TYPICAL INSTALLATION – SOLAR THERMOSIPHON 52H180...
  • Page 36 INSTALLATION TYPICAL INSTALLATION – SOLAR THERMOSIPHON 52H300 TYPICAL INSTALLATION RHEEM PREMIER HILINE 52H300...
  • Page 37 INSTALLATION ASSEMBLY DIAGRAM – 52L SERIES – SCREWED FITTING NPT200, L COLLECTORS Components Solar Hot Pipe Collector Rail Adaptor Union M33 M x G A - TPR Valve HTT55-1 – 850 kPa Tank Strap 3/4 F Conetite B - Insulation kit TPRV A - Solar Cold Pipe Plastic End Cover (pr) *** B –...
  • Page 38 INSTALLATION ASSEMBLY DIAGRAM – 52H SERIES WITHOUT OTP – SCREWED FITTING NPT200, L COLLECTORS Components Solar Hot Pipe Union R1/2M x G1/2M Olive Caleffi Pressure Relief A –TPR Valve HTT55-1 – 850 kPa Valve 200 kPa B – Insulation kit TPRV Collector Rail Adaptor Union M33 M x G Bush Reducing R ¾...
  • Page 39 INSTALLATION ASSEMBLY DIAGRAM – 52H SERIES WITH OTP – SCREWED FITTING NPT200, L COLLECTORS Components Solar Hot Pipe Combination Isolation, Tank to OTP Valve Pipe A –TPR Valve HTT55-1 – 850 kPa Strainer & Non-Return Valve OTP Valve B – Insulation kit TPRV Copper Blanking Disk Plug G 1/8 M and ‘O’...

  • Page 40: Installation - Solar Collectors

    Consult a structural engineer. The solar storage tanks, when full of water, weigh approximately 377 kg (300 litre) and 231 kg (180 litre). Each SPA2000 solar collector and its fittings weighs up to approximately 55 kg when full of closed circuit fluid and each NPT200 and CSA2007 solar collector and its fittings weighs up to approximately 44 kg when full of fluid.
  • Page 41 INSTALLATION – SOLAR COLLECTORS Each of these options should be discussed with the system owner. If neither of these options is possible nor suitable, 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.
  • Page 42 INSTALLATION – SOLAR COLLECTORS WARNING: Plumber – Be Aware • The solar hot and solar cold pipe work between the thermosiphon solar storage tank and the solar collectors are supplied in the parts kit. The supplied copper solar hot and solar cold pipes MUST BE used.

  • Page 43: System Assembly

    SYSTEM ASSEMBLY COMPONENTS AND KIT CONTENTS The thermosiphon solar water heater is supplied with a parts kit, which contains the components required to assemble the solar storage tank and solar collectors together. System Components and Kit Contents – 52L180, 2L300 Open Circuit Systems NPT200 and L Collectors with Screwed Fittings 52L180 tank with one NPT200 or L solar collector –...
  • Page 44 SYSTEM ASSEMBLY System Components and Kit Contents – 52H180, 2H300 Closed Circuit Systems NPT200 and L Collectors with Screwed Fittings 52H180 tank with one NPT200 or L solar collector – without OTP 12105520 52H300 tank with two NPT200 or L solar collectors – without OTP 12105522 52H300 tank with two NPT200 or L solar collectors –...
  • Page 45 SYSTEM ASSEMBLY 344573 Connector assembly tank to OTP valve 209000 Valve OTP thermosiphon arrestor TA705 ¾ 330606 Copper blanking disc 341515 Plug thumb G1/8 M & O-ring assembly Adaptor G3/8” x BSP to ISO7 R¼” 344593 341504 Adaptor Tee clip in port to ISO7 RP¼ & O-ring Tank to collector spacer 337144 331658...
  • Page 46 Stone Guards are available to provide a level of protection to the collectors against vandalism or accidental damage. Contact Rheem or your local Rheem Solar Water Heater Distributor for details.
  • Page 47 SYSTEM ASSEMBLY ASSEMBLY PROCEDURE Refer to the assembly diagrams on pages 37 to 39 for the location and position of components. DO NOT MODIFY THESE PARTS IN ANY WAY. Refer to the installation instructions supplied with the 52H system OTP kit for additional information of the installation of the over temperature protection components.
  • Page 48 SYSTEM ASSEMBLY Rafter spacing Recommended slots Three collectors (1 x two and 1 x one collector rails) 300 mm (12”) 1, 5 (long) & 3 (short) 400 mm (16”) 1, 5 (long) & 3 (short) 450 mm (18”) 2, 5 (long) & 4 (short) 500 mm (20”) 1, 6 (long) &...
  • Page 49 SYSTEM ASSEMBLY 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 the highest point in the collector waterway so the system functions efficiently.
  • Page 50 SYSTEM ASSEMBLY Solar Collectors: Using a lifting device, lift the first solar collector onto the roof and place it carefully in the correct configuration with the lower end seated in the collector rail. Prior to positioning the next solar collector (for a two collector installation), firmly clamp (two collector clamps per collector) to the collector rail using the collector clamps, hex screws, washers and nuts provided.
  • Page 51 SYSTEM ASSEMBLY Clamps and Fixing Collector (Bottom): Ensure the solar collectors are well seated and centred in the collector mounting rail. 209130 Collector Rail: Clamp the solar collectors (two clamps 331842 per collector) to the collector mounting rail, using the clamps and hex screws, washers and nuts provided.
  • Page 52 SYSTEM ASSEMBLY Solar cold pipe: Connect the solar cold pipe to the union on the left hand end of the solar storage tank and collector simultaneously. Ensure the pipe is parallel with the collector. Push the pipe against the tank union stop and hand tighten the gland nut.
  • Page 53 SYSTEM ASSEMBLY End Plugs / Collector Bung: 52L direct and 52H indirect system – NPT200 and L Collector screwed fitting: Fit a blanking disc with an O-ring to each of the top left and bottom right connections of the solar collectors, Secure in position using an M33 collector nut provided.
  • Page 54 SYSTEM ASSEMBLY Cold Water Inlet: 52L direct system: Connect the copper cold supply pipe to the shoulder of the solar cold pipe using the G½ compression nut and copper olive provided. 52H indirect system: Fit the Union Body R3/4 M x DN15 Olive provided to the cold water inlet. Connect the copper cold supply pipe using copper olive and compression nut provided.
  • Page 55 SYSTEM ASSEMBLY Asbestos Roofs All Occupational Health and Safety matters / procedures must be adhered to in relation to asbestos material. If safety procedures are not adhered to then terminal illness may result from the handling of asbestos. Care needs to be taken when fixing straps to asbestos roofs. It is suggested that longer Tek screws are used to fit securely into purlins.

  • Page 56: Connections - Plumbing

    CONNECTIONS – PLUMBING All plumbing work must be carried out by a qualified person and in accordance with the requirements of the Plumbing Code of Australia (PCA) and the Plumbing 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.
  • Page 57 CONNECTIONS – PLUMBING A disconnection union must always be provided at the cold water inlet and hot water outlet of the solar storage tank to allow for disconnection of the solar storage tank. The pipe work from the hot water outlet must not be installed in front of or prevent access to the electrical cover of the solar storage tank.
  • Page 58 CONNECTIONS – PLUMBING TEMPERATURE PRESSURE RELIEF VALVE The temperature pressure relief valve is supplied in the parts kit. The temperature pressure relief valve must be fitted to the hot water outlet before the water heater is operated. Before fitting the relief valve, make sure the probe has not been bent.
  • Page 59 CONNECTIONS – PLUMBING RELIEF VALVE DRAIN DN15 copper drain lines must be fitted to the temperature pressure relief valve and expansion control valve to carry the discharge clear of the water heater. Connect the drain lines to the valves using disconnection unions. The drain line from the valve to the point of discharge should be as short as possible, have a continuous fall all the way from the water heater to the discharge outlet and have no tap, valves or other restrictions in the pipe work.

  • Page 60: Connections - Electrical

    CONNECTIONS – ELECTRICAL The power supply to the water heater must not be switched on until the water heater is filled with water and a satisfactory megger reading is obtained. All electrical work and permanent wiring must be carried out by a qualified person and in accordance with the edition of the Wiring Rules AS/NZS 3000 in force in the state or territory at the time of installation, and all local codes and regulatory authority requirements.
  • Page 61 For reasons of safety and economy, we advise the thermostat be set at the lowest temperature that will provide sufficient hot water during periods when boosting is required. Rheem recommends the thermostat is set at 60°C to maximise solar contribution. Discuss the thermostat setting requirements with the householder.

  • Page 62: Multiple Installations

    The system may be installed with the solar water heaters as preheaters and their electrical heating units not be connected to a power supply. Rheem commercial or heavy duty water heaters should be installed in series with the solar water heaters to boost the water temperature during periods of poor or no solar gain.
  • Page 63 MULTIPLE INSTALLATIONS RHEEM COMMERCIAL SOLAR THERMOSIPHON – DOUBLE ARRAY...

  • Page 64: Commissioning

    “Closed Circuit Fluid” with the closed circuit fluid. Refer to on page 65. A commissioning kit is available from Rheem for the purpose of filling the closed circuit. Contact Rheem or your local Rheem Solar Water Heater Distributor for details. •...
  • Page 65 The circuit is filled with Coolblend heat transfer fluid concentrate and water. Under no circumstances can any fluids other than provided by Rheem be used as the heat transfer fluid. Only potable water can be used in conjunction with the heat transfer fluid concentrate.
  • Page 66 Coolblend concentrate when handling. Only use approved closed circuit concentrate. If required, a Safety Data Sheet (SDS) is available from Rheem. While the closed circuit fluid is non-toxic to humans, it does have an adverse effect on water stored in rainwater tanks.
  • Page 67 COMMISSIONING To Fill the Closed Circuit It is necessary to fill the heat exchanger and solar collectors with closed circuit fluid before the water heater can be operated. Refer to diagram on page 67. Note: Care must be taken to ensure there is no spillage of the closed circuit fluid onto the roof surface, particularly if the roof is part of a rainwater collection system.
  • Page 68 COMMISSIONING INSTALLATION CHECKLIST Prior to handover, complete the final check list: System is installed as per the installation instructions ................. [ Water is connected, turned on and solar storage tank is filled ............. [ Closed circuit is filled with correct concentration of fluid and has been commissioned ......[ All mechanical fixings are secured .....................

  • Page 69: Draining The Closed Circuit Fluid - 52H Series

    DRAINING THE CLOSED CIRCUIT FLUID – 52H SERIES It may be necessary to drain the solar collectors and heat exchanger of a closed circuit system during maintenance. Draining the solar collectors and heat exchanger of closed circuit fluid should be conducted within three (3) hours of sunrise when the sun is low in the sky.

  • Page 70: Draining And Flushing The Solar Storage Tank

    DRAINING AND FLUSHING THE SOLAR STORAGE TANK DRAINING AND FLUSHING THE SOLAR STORAGE TANK AND COLLECTORS It may be necessary to drain or flush the solar storage tank of an open or closed circuit system or the solar collectors of an open circuit system during maintenance or if there is sediment in the water supply. This should be conducted in the morning, within three (3) hours of sunrise when the sun is low in the sky.
  • Page 71 DRAINING AND FLUSHING THE SOLAR STORAGE TANK Draining and Flushing the Solar Storage Tank Open circuit system Undo the union at the cold water inlet to the solar cold pipe. Undo the fitting and remove the solar cold pipe from the solar storage tank. Connect a hose to the tank connection.
  • Page 72 DRAINING AND FLUSHING THE SOLAR STORAGE TANK Draining and Flushing the Solar Collectors (Open Circuit System) From the bottom end of the solar collectors, unscrew and remove the end plug. Connect a hose to the collector connection. Let the other end of the hose go to a drain. From the top end of the solar collectors, unscrew and remove the end plug.

  • Page 73: Installation Report

    (please circle) Gas Booster Model No Serial No (if installed) If replacing a water heater, please give details Brand Model No Electric If a Rheem unit Tank Serial No Date of manufacture Collector Serial No’s Comments Signature: Installer: Customer: Date...
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  • Page 76 Revision Date: 2021 November AQ0901073B...

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