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CONNECTIONS – ELECTRICAL

32

If this water heater is installed as part of a solar water heating system:

the solar control system must be of a design to limit solar contribution so the
water temperature in the tank does not exceed 80°C. This is necessary to
ensure the solar input does not cause the thermostat’s over-temperature
cut-out to operate.

we recommend the water heater thermostat is set at 60°C to maximise solar
contribution.

WIRING DIAGRAM SINGLE ELEMENT ELECTRIC WATER HEATERS

Thermostat

– tradesperson adjustable

min 60°C, max 75°C.

Electrical Circuit for Single Element Models – Robertshaw “ST” Thermostats

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Содержание Stellar

Страница 1: ...is water heater must be installed and serviced by a qualified person Please leave this guide with the householder Owner s Guide and Installation Instructions Stainless Steel Electric Domestic Water Heater ...

Страница 2: ...y Ltd or Aquamax Australia Pty Limited TRADEMARKS Registered trademark of Rheem Australia Pty Ltd TM Trademark of Rheem Australia Pty Ltd Note Every care has been taken to ensure the accuracy in preparation of this publication No liability can be accepted for any consequences which may arise as a result of its application ...

Страница 3: ...er pages are intended for the installer but may be of interest About Your Water Heater 4 Regular Care 9 Water Supplies 12 Save A Service Call 16 Installation 19 Connections Plumbing 27 Connections Electrical 31 Commissioning 33 Draining The Water Heater 34 Warranty 38 ...

Страница 4: ... of the tank The plug blocks off an alternative cold water connection point and is not to be tampered with or removed MAINS PRESSURE The water heater is designed to operate at mains pressure by connecting directly to the mains water supply If the mains supply pressure in your area exceeds that shown on page 21 a pressure limiting valve must be fitted The supply pressure should be greater than 350 ...

Страница 5: ... water heater This water heater uses 240 V AC power for the electrically operated components The removal of the front cover s will expose 240 V wiring It must only be removed by a qualified person SAFETY This water heater is supplied with a thermostat an over temperature cut out and a combination temperature pressure relief valve These devices must not be tampered with or removed The water heater ...

Страница 6: ...ier about your needs and building back up redundancy into your hot water supply system THERMOSTAT The thermostat automatically controls the electricity supply to the heating unit so a constant temperature is maintained The thermostat and its protective over temperature cut out is mounted inside the front cover of the water heater There is no need to switch the water heater off when it is not in us...

Страница 7: ... to be away from home for only a few nights we suggest you leave the water heater switched on If it is necessary to turn off the water heater Switch off the electrical supply at the isolating switch to the water heater Close the cold water isolation valve at the inlet to the water heater TO TURN ON THE WATER HEATER Open the cold water isolation valve fully on the cold water line to the water heate...

Страница 8: ...y 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 DOES THE WATER CHEMISTRY AFFECT THE WATER HEATER The water heater is suitable for most public water supplies however some water chemistries may have detrimental effects on the water heater its components and fittin...

Страница 9: ...ater heater The major service includes the following actions Replace the temperature pressure relief valve Inspect and flush the expansion control valve if fitted If required replace the valve Check the electric heating unit for excessive calcium build up or corrosion and replace if necessary Visually check the unit for any potential problems Inspect all connections Check the drain line from the s...

Страница 10: ...d lower the lever gently Refer to Expansion Control Valve on page 10 Check the drain line from the safe tray if one is installed is not blocked EXPANSION CONTROL VALVE In many areas including South Australia Western Australia and scaling water areas an expansion control valve is fitted to the cold water line to the water heater The expansion control valve may discharge a small quantity of water fr...

Страница 11: ...ths It is very important you raise and lower the lever gently DANGER Failure to do this may result in the water heater cylinder failing or under certain circumstances exploding Warning Exercise care to avoid any splashing of water as water discharged from the drain line will be hot Stand clear of the drain line s point of discharge when operating the valve s lever If water does not flow freely fro...

Страница 12: ...ed to a water supply which complies with these guidelines which takes precedence over the list of postcodes for the Rheem warranty to apply It is recommended to install a suitable filter on the cold water supply line to the water heater if the water supply contains or has a future risk of containing suspended solids The Rheem warranty will not cover resultant faults on components including the sta...

Страница 13: ... raise the pH The water supply from a rainwater tank in a metropolitan area is likely to be corrosive due to the dissolution of atmospheric contaminants This may result in pH of less than 6 0 It is recommended an analysis on the water from a rainwater tank be conducted prior to connecting this type of water supply to a water heater with a stainless steel cylinder Refer to the pH and Chloride chart...

Страница 14: ...eater cylinder Where the saturation index exceeds 0 80 the Rheem warranty does not apply to a stainless steel cylinder or a standard watts density heating unit A low watts density heating unit must be used for the Rheem warranty to apply to the heating unit Water which is scaling may be treated with a water softening device to reduce the saturation index of the water Refer to the Saturation Index ...

Страница 15: ... 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 250 mg L water heater cylinder pH 6 0 or 9 5 water heater cylinder Total Dissolved Solids TDS 600 ...

Страница 16: ...hot water than you think Is one outlet especially the shower using more hot water than you think Very often it is not realised the amount of hot water used particularly when showering Carefully review the family s hot water usage Have your plumber fit a flow control valve to each shower outlet to reduce water usage Temperature pressure relief valve running Is the relief valve discharging too much ...

Страница 17: ...ains water pressure sometimes rises above the designed pressure of the water heater Ask your installing plumber to fit a pressure limiting valve Warning Never replace the relief valve with one of a higher pressure rating Heavy flows of hot water until water heater is cold then stops until water reheats The water heater must be switched off at the switchboard Phone Rheem Service or their nearest Ac...

Страница 18: ...lumber rectify any leaking pipe work Has there been an increase in hot water usage An increase in hot water usage will result in an increase in water heater operation Has your water heating tariff rate been increased by your electricity retailer since your previous bill ELECTRICITY TARIFFS The electricity tariff to which your water heater is connected will determine the overall operating cost of t...

Страница 19: ...fe 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 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 buildi...

Страница 20: ...ng on a wall capable of taking the weight of the filled water heater A bracket kit is available from Rheem Refer to the instructions supplied with the kit Note If the base of the water heater is higher than the lowest hot water outlet by 2 m or more the tank may be subject to a negative pressure partial vacuum which can cause damage to the water heater cylinder In this instance an approved vacuum ...

Страница 21: ...ll flow gate valve or ball valve WATER CHEMISTRY Water chemistry which can have a detrimental effect on the water heater and its operation and or life expectancy Refer to Water Supplies on page 12 for information on water chemistry and its effect on the water heater It is recommended to install a suitable filter on the cold water supply line to the water heater if the water supply contains or has ...

Страница 22: ... limiting device is installed adjacent to the water heater the cold water line to the temperature limiting device can be branched off the cold water line either before or after the isolation valve pressure limiting valve and non return valve to the water heater If an expansion control valve is required it must always be installed after the non return valve and be the last valve prior to the water ...

Страница 23: ...tempered water were to be returned back to the water heater depending on the location of the return line connection on the water supply line to the water heater then either water will be supplied to the cold water inlet of the temperature limiting device at a temperature exceeding the maximum recommended water supply temperature or when the hot taps are closed no water will be supplied to the cold...

Страница 24: ...nefits of the Off Peak electricity supply will be significantly reduced If a circulated flow and return system is required it is necessary to bypass the Off Peak electric water heater and install a secondary water heater connected to the hot water flow and return line and supplied from the Off Peak electric water heater Refer to the diagram on page 24 LEGEND Circulated Hot Water Flow and Return Sy...

Страница 25: ...ATION Stainless Steel Dual Handed Models TYPICAL INSTALLATION Domestic Electric Water Heaters INDOORLOCATIONS OUTDOORLOCATIONS TYPICAL INSTALLATION INDOOR LOCATION TYPICAL INSTALLATION Domestic Electric Water Heaters INDOORLOCATIONS OUTDOORLOCATIONS ...

Страница 26: ... D mm 510 920 1240 990 1310 E mm 185 185 185 230 230 F mm 120 110 110 145 145 H deg 25 25 25 30 30 J deg 55 55 55 60 60 M deg 125 125 125 120 120 TPR Valve Setting kPa 1400 1400 1400 1000 1000 Approx Weight empty kg 25 30 40 45 55 All models are suitable for indoor or outdoor installation All models have left and right hand dual handed DH cold water connections a hot water connection at the top of...

Страница 27: ... on all fittings An isolation valve and non return valve must be installed on the cold water line to the water heater An acceptable arrangement is shown in the diagram Refer also to Hot Water Delivery on page 22 and to Mains Water Supply on page 21 A disconnection union must always be provided at the cold water inlet and hot water outlet on the water heater to allow for disconnection of the water ...

Страница 28: ...r each individual application Reference to the technical specifications of the water heater and local regulatory authority requirements must be made TEMPERATURE PRESSURE RELIEF VALVE The temperature pressure relief valve is shipped in the water heater carton base The temperature pressure relief valve must be fitted before the water heater is operated Before fitting the relief valve make sure the p...

Страница 29: ...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 A drain line from a relief valve must comply with the requirements of AS NZS 3500 4 A drain line must be no longer than nine 9 metres with no more than three bends greater than 45 before discharging at an outlet or air break The maximum length o...

Страница 30: ... as for a drain line from a relief valve Warning As the function of the temperature pressure relief valve on this water heater is to discharge high temperature water under certain conditions it is strongly recommended the pipe work downstream of the relief valve be capable of carrying water exceeding 93 C Failure to observe this precaution may result in damage to pipe work and property ...

Страница 31: ...or the electrical cable to the water heater The conduit is to be connected to the unit with a 20 mm terminator Connect the power supply wires directly to the terminal block and earth tab connection ensuring there are no excess wire loops inside the front cover The temperature rating of the power supply wires insulation must suit this application Note Remove the yellow warning label from the condui...

Страница 32: ...he tank does not exceed 80 C This is necessary to ensure the solar input does not cause the thermostat s over temperature cut out to operate we recommend the water heater thermostat is set at 60 C to maximise solar contribution WIRING DIAGRAM SINGLE ELEMENT ELECTRIC WATER HEATERS Thermostat tradesperson adjustable min 60 C max 75 C Electrical Circuit for Single Element Models Robertshaw ST Thermos...

Страница 33: ...pe work for leaks Switch on the electrical supply at the isolating switch to the water heater Explain to the householder or a responsible officer the functions and operation of the water heater Upon completion of the installation and commissioning of the water heater leave this guide with the householder or a responsible officer TO TURN OFF THE WATER HEATER If it is necessary to turn off the water...

Страница 34: ...taps Operate the relief valve release lever do not let the lever snap back or you will damage the valve seat Operating the lever will release the pressure in the water heater Undo the union at the cold water inlet to the water heater and attach a hose to the water heater side of the union Let the other end of the hose go to a drain Operate the relief valve again This will let air into the water he...

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Страница 38: ... or replace a faulty component is at Rheem s sole discretion 2 2 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 2 3 Where a failed component or cylinder is replaced under this warranty the balance ...

Страница 39: ... to any statutory provisions to the contrary this warranty excludes any and all claims for damage to furniture carpet walls foundations or any other consequential loss either directly or indirectly due to leakage from the water heater or due to leakage from fittings and or pipe work of metal plastic or other materials caused by water temperature workmanship or other modes of failure 2 9 If the wat...

Страница 40: ...the water heater or if that s unavailable the date of manufacture and serial number from the rating label on the water heater b Rheem will arrange for the water heater to be tested and assessed on site c If Rheem determines that you have a valid warranty claim Rheem will repair or replace the water heater in accordance with this warranty 5 2 Any expenses incurred in the making of a claim under thi...

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