Hotflo solar enabled electric storage water heater (20 pages)
Summary of Contents for Rinnai Hotflo 25L
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Hotflo - Vitreous Enamel - Electric Hot Water Operation & Installation Manual...
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This appliance must be installed, maintained and removed ONLY by an Authorised Person. For continued safety of this appliance it must be installed and maintained in accordance with the manufacturer’s instructions. This Appliance complies with current AS 3498 SAI GLOBAL LIC. WMKA21244 Rinnai Hotflo Electric Storage Water Heater OIM...
Connections to the water heater ������������������������������������������������������������������������������������������������������������������������������������������ 15 Water Pipes ������������������������������������������������������������������������������������������������������������������������������������������������������������������������� 15 Pressure and Temperature Relief (PTR) Valve �������������������������������������������������������������������������������������������������������������������� 16 Expansion Control Valve (ECV) ������������������������������������������������������������������������������������������������������������������������������������������� 16 Pressure Limiting Valve (PLV) ��������������������������������������������������������������������������������������������������������������������������������������������� 16 Relief Valve Drain Lines ������������������������������������������������������������������������������������������������������������������������������������������������������� 16 Electrical Supply ������������������������������������������������������������������������������������������������������������������������������������������������������������������ 17 Electrical Connections ��������������������������������������������������������������������������������������������������������������������������������������������������������� 17 Commissioning Wiring Diagrams ������������������������������������������������������������������������������������������������������������������������������������������������������������������ 18 Thermostat Setting ������������������������������������������������������������������������������������������������������������������������������������������������������������� 18 To fill & turn ‘ON’ the water heater �������������������������������������������������������������������������������������������������������������������������������������� 19 To turn ‘OFF’ the water heater �������������������������������������������������������������������������������������������������������������������������������������������� 19 Contacts Rinnai Hotflo Electric Storage Water Heater OIM...
Failure to carefully read and follow all instructions in this manual can result in equipment malfunction, property damage, personal injury and/or death. YourRinnaiHotfloMainsPressureVitreousEnamelElectricStorageWaterHeaterhasbeen certified by relevant plumbing and electrical authorities and the details are shown on data plate.
Installing tempering valves or thermostatic mixing valves which reduce the hot water temperature delivered tothetaps.Yourlocalplumbingauthoritymayalreadyrequirethatthesebefitted.Contactyourinstaller orlocalplumbingauthorityifindoubt. Never…. Leave a toddler in the care of another child. They may not understand the need to have the water temperature set at a safe level. Rinnai Hotflo Electric Storage Water Heater OIM...
DO NOT replacethePTRvalvewithonethathasahigherpressureratingthanisspecifiedfor WARNING the water heater. The PTR valve should be checked for performance or replaced at intervals not exceeding 5 years, or more frequently in areas with a high incidence of water deposits by a qualified person. The easing gear must be operated at least once every six months or more frequently in areas with a high incidence of water deposits. Failure to do this may result in the water heater cylinder failing or under certain circumstances, exploding.Waterdischargedwillbeveryhot.Exercisecaretoavoidscaldinjury.Ifthevalvedoes notsealagainwhentheeasinggearisclosed,contactRinnaitoarrangeinspectionbyaqualified WARNING person. It is important you raise and lower the easing gear gently. If the valve does not Gently lift lever discharge water when the easing gear lever is lifted, there may be a serious until water flows problem and the power supply in the meter box (the switch marked ‘Water from drain line, heater’ or ‘hot water’) or the isolating switch installed near the water heater...
IMPORTANT INFORMATION ANODE The water heater is fitted with a sacrificial anode to extend it’s life. It will slowly dissipate whilst protecting the cylinder. The life of the water heater may be extended by arranging for an authorised person to inspect the anode and replace it if required. It is recommended that the anode be inspected at least every 5 years. The factory fitted Rinnai anode is Magnesium based. This anode is suitable when the total dissolved solids (TDS) content in the water supply does not exceed 600 mg/L, which is the case in most areas. In areas where the total dissolved solids (TDS) content in the water supply exceeds 600 mg/L the Rinnai aluminium based anode is required. WATER QUALITY The water quality of most public supplies is suitable for the water heating system. The water quality from bore wells is generally unsuitable for the water heating system. Refer to the ‘Warranty Conditions’ for water quality parameters and how they affect the warranty conditions. If in doubt about the water quality, have it checked against...
Review hot water usage, especially the time taken for showering, and investigate the these possibilities. use of flow control valves or ‘water saving’ shower roses. Investigate recent changes to hot water usage patterns. If, after investigating, and you still require assistance Water heater valves may be discharging excessively. Refer to the section “Safety contact Rinnai. Devices” on page 6. There may be hot water leakages in hot water pipes or taps. Have these checked and rectified by a plumber. There may have been changes in electricity tariffs since your last bill. PERIODIC MAINTENANCE & SERVICING If overflow tray and drain are fitted, it is the users responsibility to have these checked periodically to ensure there are no blockages.
In accordance with AS/NZS 3500.4 14. Safe Tray & drain (Not Supplied) May be required to avoid property damage in accordance with AS/NZS 3500.4 RemovalandconnectionbyqualifiedpersonsONLY,inaccordancewithAS/NZS3000 ValveswithpressureratingsotherthanspecifiedareunsuitableandMUST NOTbeused. NOTE WATER HEATER - located closest to most frequently used outlet - Access for service in the installed position. Rinnai Hotflo Electric Storage Water Heater OIM...
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250L 315L 400L Element Element Element Element 1245 1620 1313 1477 1770 1840 1620 1477 1770 1840 1020 1419 1107 1248 1541 1587 1419 1248 1541 1587 1039 1225 1263 All dimensions are in mm unless otherwise stated Rinnai Hotflo Electric Storage Water Heater OIM...
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PLV with ECV (kPa) Max. Inlet Pressure without ECV (kPa) PLV without ECV (kPa) Max. Thermostat Setting 70°C (°C) Ingress Protection Rating IPX4 Electrical Supply 240V-@50Hz Tank Body Colour White Dune Hot and cold water Rp 3/4 (20mm) connection Rinnai Hotflo Electric Storage Water Heater OIM...
Isolating Valve Valve Valve Valve (OR) TO DRAIN Isolating Valve COLD SUPPLY WATER HEATER COLD SUPPLY Non-return Valve WATER HEATER TO DRAIN (Not Supplied) TO DRAIN ValveswithpressureratingsotherthanspecifiedareunsuitableandMUST NOT beused. Forratingssee"Table2.Ratings&OtherSpecifications"onpage11. CAUTION It may be a requirement that the hot and cold water supply pressures to a Temperature Limiting Device (TLD) a re equal. If this is the case, a PLV with the same pressure rating as the PLV for t he hot water is required for the TLD as shown. Rinnai Hotflo Electric Storage Water Heater OIM...
PTR VALVE BATHROOM Temperature Valve (Supplied) Valve TO DRAIN Limiting Device (TLD) ENSUITE Non-return Valve COLD SUPPLY WATER HEATER Isolating Non-return Valve Valve TO DRAIN (Not Supplied) ValveswithpressureratingsotherthanspecifiedareunsuitableandMUST NOT beused. Forratingssee"Table2.Ratings&OtherSpecifications"onpage11. Thisschematicisanexampleonly,variationsmayalsobesuitable. CAUTION TemperedwaterfromaTLDCANNOTbere-circulated.TheTLDMUST BE positioned in adeadleg,branchingoffthecirculatedhotwaterflowandreturnpipe. Rinnai Hotflo Electric Storage Water Heater OIM...
INSTALLATION This appliance MUSTBE installed by a qualified person in accordance with: • Manufacturers installation instructions • Current AS/NZS 3000 Wiring Rules • Current AS/NZS 3500.4 Plumbing and Drainage - Heated Water Services • All local regulatory requirements This appliance is NOTsuitable for use as a spa or swimming pool heater. LOCATION The Rinnai Hotflo electric storage water heater range have an ingress protection rating of IPX4 making 80L to 400L models suitable for internal or external installation. However, Hotflo 25L and 50L models can only be installed indoors. The water heater should be placed as close as practicable to the most frequently used hot water outlet point or points to minimize the delay time for hot water delivery. This will usually be the kitchen tap. For installations where the distance between the water heater and the outlets is considerable, a flow and return system can be used which will minimize the waiting time for hot water delivery. It is recommended that the water heater is installed at ground or floor level. It MUSTBE installed in a vertically upright position. The water heater MUSTBE accessible without the use of a ladder or scaffold. Installation into roof spaces MUST comply with local regulatory authority requirements. Ensure the PTR valve, isolating valves, access covers, thermostats and heating elements have sufficient clearances and are accessible for service and removal. The information on the rating plates MUST also be readable. The water heater MUST BE installed in free standing mode on a level and stable base in a manner that is acceptable to local authorities. Avoid situations that may result in pooling of water around the base of the water...
REDUCING THE RISK OF SCALDING This water heater can deliver water at temperatures which can cause scalding. Children, disabled and the elderly are at the highest risk or being scalded. Local regulatory requirements and the requirements of AS/NZS 3500.4 MUST BE considered regarding temperature limitations of hot water delivered to areas used primarily for personal hygiene such as bathrooms and ensuites. The delivery temperature may be limited to 45°C for early childhood centres, primary and secondary schools and nursing homes or similar facilities for the young, aged, sick or people with disabilities and 50°C for all other buildings. These temperatures will reduce the risk of scald injury and can be achieved by the use of a TLD, for example a thermostatic mixing valve or tempering valve. Rinnai recommend that an approved TLD is fitted into the hot water pipe work from the water heater to areas used primarily for personal hygiene such as bathrooms and ensuites to reduce the risk of scalding. Refer to the installation configurations "Hot Water Plumbing System Example - With TLD" on page 12 and "Hot Water Plumbing System Example / Flow & Return Pipe Work - With TLD" on page 13. PLUMBING CONNECTIONS Connections to the water heater Refer to Specifications for the plumbing connection sizes and location (Table 1) and the specified pressure ratings of valves (Table 2). Refer also to the diagrams under “Installation Configurations”. ValveswithpressureratingsotherthanspecifiedMUST NOTbeused.
Relief Valve Drain Lines Copper drain lines of size DN15 MUSTBE fitted to the ECV (if fitted) and the PTR valve. Use disconnection unions to connect drain lines to the valves. The configuration of drain lines MUSTBE in accordance with local regulatory requirements and the requirements of AS/NZS3500.4. The length should be as short as possible on a continuous downward slope with no restrictions. Length should NOT exceed 9 metres with no more than three 45° bends. If a drain line discharges into a tundish, the drain line from the tundish MUSTNOT be less than DN20. The drain line from a tundish MUST meet the same requirements as drain lines from relief valves. The drain lines from the PTR valve and ECV (if fitted) from an individual water heater may be interconnected subject to local regulatory authority requirements and AS/NZS3500.4. The termination point MUST also comply with local regulatory requirements and AS/NZS3500.4. Drain lines MUSTNOT discharge into a safe tray. The outlet of drain lines MUSTNOT be obstructed and be positioned so that they are readily discernible but NOT cause injury, damage or nuisance. In areas where water pipes are prone to freezing, drain lines MUSTBEinsulated and NOT exceed 300mm in length. In this case the drain line MUST discharge into a tundish through an air gap of between 75mm and 150 mm. Rinnai Hotflo Electric Storage Water Heater OIM...
ElectricalconnectionMUST BEcarriedoutbyaqualifiedpersonandinaccordancewithAS/NZS 3000 'Wiring Rules' and local authority requirements WARNING Disconnect all power prior to installation and commissioning. This appliance is designed for singlephase240Volts,ACmainselectricaloperation. All electrical connections MUST BEmadebyanauthorisedpersonandmustcomplywithall localelectricalsupplyregulationsandAS/NZS3000. Thepremiseswiringtotheheatermustbecapableofwithstandingtheapplianceload. NOTE Electrical access is via a 20 mm hole beneath the element cover for mounting with an approved weatherproof electrical conduit nipple. For entry to the element cover remove the two fixing screws. Connect all ACTIVE and NEUTRAL wires in accordance with the wiring diagram which is also included at the rear of the element access cover. Ensure the incoming EARTH wire is securely fixed to the earth post provided on the heater case. Inspect and ensure that all wiring links are secure prior to fixing the access cover and turning the POWER ON. To ensure the Over-temperature and Energy Cut-out is set, press the (red) 'reset' button on the Thermostat. Rinnai Hotflo Electric Storage Water Heater OIM...
Off Peak - A Neutral - N Thermostat Setting The thermostat is adjustable from 60°C to 70°C. Turning the adjustment knob anticlockwise decreases the temperature setting and turning it clockwise increases the temperature setting. The water heater as delivered will have the thermostat preset to 70°C. EnsurethepowersupplyisswitchedOFFbeforeremovingtheaccesscovertotheelementand thermostat. WARNING TheaccesscovertotheelementandthermostatMUST ONLY BEremovedbyanElectricianor othersuitablyqualifiedtradesperson. ThethermostatsettingMUST ONLY BEadjustedbyanelectricianorothersuitablyqualified trades person. Afteradjustment,pressthe(red)‘Reset’Buttononthethermostatstoensuretheover-temperature andenergycut-outisset. Rinnai Hotflo Electric Storage Water Heater OIM...
COMMISSIONING Commissioning activities MUST BEcarriedoutbyanauthorisedperson. DO NOTswitchontheelectricpowersupplyuntilthewaterheaterisfilledcompletelywithwater. WARNING TO FILL & TURN ‘ON’ THE WATER HEATER Open all hot water taps in the building, including the shower. Open the cold water isolation valve to water heater. Air will now be forced out of the taps. Close each tap when water runs freely without air bubbles. Check all plumbing connections and pipe work for water leaks. Connect the water heater to the electricity supply, and turn the electric power supply 'ON'. TO TURN ‘OFF’ THE WATER HEATER It may be necessary to turn off a water heater after installation and commissioning, for example during building activities or if the premises are vacant. Isolate or turn 'OFF' the water heater at the electricity supply. Close the cold water isolation valve at the inlet to the water heater. Rinnai Hotflo Electric Storage Water Heater OIM...
*Cost of a local call higher from mobile or public phones. For further information visit www.rinnai.com.au or email enquiry@rinnai.com.au Rinnai has a Service and Spare Parts network with personnel who are fully trained and equipped to give the best service on your Rinnai appliance. If your appliance requires service, please call our National Help Line.
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