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Owners Guide
and
Installation Instructions
Gas Heavy Duty
Water Heater
265 Litre and 275 Litre Models
This water heater must be installed and serviced by an authorised person.
Please leave this guide with a responsible officer.
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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 Compl
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CONTENTS RESPONSIBLE OFFICER - We recommend you read pages 4 - 14. The other pages are intended for the installer but may be of interest. How Your Water Heater Works...................................................8 Regular Care ................................................................................9 Save A Service Call ...................................................................11 Installation.....................................................................
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ABOUT YOUR WATER HEATER MODEL TYPE ® Congratulations for choosing a Rheem Heavy Duty Gas water heater. The model you have chosen is either a 265 litre or 275 litre indoor or outdoor quick recovery water heater. HOW HOT SHOULD THE WATER BE? The water heater has a maximum maximum thermostat setting (82 °C) temperature setting of 82 °C and a minimum temperature setting of 60 °C. Refer to “Temperature Adjustment” on page 4. minimum recommended stored water temperature and minim
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ABOUT YOUR WATER HEATER WARNING This water heater is not intended to be operated, adjusted or tampered with by young children or infirm persons. Young children should be supervised to ensure they do not interfere with the water heater. The removal of the access cover(s) will expose 240 V wiring. They must only be removed by an authorised or service person. SAFETY • Do not store flammable or combustible materials near the water heater. Flammable liquids (such as petrol), newspa
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ABOUT YOUR WATER HEATER 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 must not be operated unless each of these devices is fitted and is in working order. The warranty can become void if relief valves or other safety devices are tampered with or if the installation is not in accordance with these instructions. TO TURN OFF THE WATER
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ABOUT YOUR WATER HEATER DOES THE WATER QUALITY AFFECT THE WATER HEATER? The water heater is suitable for most public water supplies, however some water qualities may have detrimental effects on the cylinder and fittings. If you are in a known harsh water area you must read page 46. If you are not sure, have your water quality checked against the conditions described on page 46. HOW LONG WILL THE WATER HEATER LAST? There are a number of factors that will affect the length of service the
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HOW YOUR WATER HEATER WORKS Water is stored in a vitreous enamel lined steel cylinder and heated by a gas burner located under the cylinder. The heat produced by the burner is transferred to the water through the base of the cylinder and through the wall of a flue pipe which passes through the centre of the cylinder. A flue baffle in this flue ensures the efficiency of the water heater is correct. The gas supply to the burner is controlled by the thermostat so the water is heated to a
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REGULAR CARE TEMPERATURE PRESSURE RELIEF VALVE This valve is near the top of the water heater and is essential for its safe operation. It is possible for the valve to release a little water through the drain line during each heating period. This occurs as the water is heated and expands by approximately 1/50 of its volume. Continuous leakage of water from the valve and its drain line may indicate a problem with the water heater (refer to “Temperature Pressure Relief Valve Running”
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REGULAR CARE SERVICING For efficient operation the water heater should be serviced annually by your nearest Rheem Service Department or their Accredited Service Agent. Only genuine replacement parts should be used on this water heater. Warning: Servicing of a gas water heater should only be carried out by authorised personnel. In commercial applications where large volumes of hot water are used, sediment may build up on the bottom of the cylinder and reduce the heating efficiency. I
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SAVE A SERVICE CALL Check the items below before making a service call. You will be charged for attending to any condition or fault that is not related to manufacture or failure of a part. NOT ENOUGH HOT WATER (OR NO HOT WATER) • Is the electricity switched on? Inspect the isolating switch adjacent to the water heater and ensure it is turned on. • Is there a time clock on the power supply? Check the settings on the time clock and ensure they are suitable to enable heating when
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SAVE A SERVICE CALL WATER HEATER NOT OPERATING The ignition system may have ‘locked out’. To reset the water heater, switch the electrical supply off at the isolating switch, wait ten seconds then switch on again. If the water heater fails to light, phone your nearest Rheem Service Department or Accredited Service Agent to arrange for an inspection. DIAGNOSTIC FEATURES OF ELECTRONIC THERMOSTAT This water heater incorporates an electronic thermostat. In the event of a fault occurring a
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SAVE A SERVICE CALL TEMPERATURE PRESSURE RELIEF VALVE RUNNING • Normal Operation It is normal and desirable that this valve allows a small quantity of water to escape during the heating cycle. However, if the discharge is deemed excessive (more than 2% of hot water used), there may be another problem. • Continuous dribble Try gently raising the easing lever on the relief valve for a few seconds (refer to “Temperature Pressure Relief Valve” on page 9). This may dislodge a small
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SAVE A SERVICE CALL WATER HEATER APPEARS TO BE LEAKING When the water heater is first lit or after a large usage of hot water, condensation may form on the burner of the water heater. This is quite normal, especially in winter months and will dry off as the water is heated. HIGH GAS BILLS Should you at any time feel your gas account is too high, we suggest you check the following points: • Is the relief valve running excessively? (Refer to “Temperature Pressure Relief Valve Running”
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INSTALLATION THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING Check the water heater is suitable for the gas type available (refer to the rating label on the water heater) Note: In Australia, natural gas models can be connected to SNG, however the hourly gas consumption may be reduced (typically by 10%). WATER HEATER LOCATION An indoor model must be installed indoors and an outdoor model must be installed outdoors, except where a 631 275 model water heater is installed indoors
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INSTALLATION INDOOR INSTALLATION A secondary flue must be installed with an indoor water heater to discharge combustion products outside the building. The flue must be self supporting and not impose a load on the water heater. Use a slip joint or similar to allow for disconnection. There must be a vertical rise of 600 mm from the draught diverter before changing direction. The flue design and installation must comply with AS 5601. There are particular fluing requirements for a 631 275 mod
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INSTALLATION OUTDOOR INSTALLATION The water heater is to be installed at ground level on a concrete or brick plinth (fire proof base) and must stand vertically upright with the back of the water heater against an external wall or alternatively against a fireproof screen extending at least 500mm above, below and either side of the flue terminal. Failure to observe this precaution can cause problems in high wind areas. A secondary flue is not required. For outdoor models the follow
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INSTALLATION MAINS WATER SUPPLY 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 installation diagram (refer to installation diagram on page 25). Model 265, 275 Relief valve setting 1000kPa Expansion control valve setting* 850kPa Max. mains supply pressure With expansion control valve 680kPa Without expansion control valve 800kPa * Expansion control valve not supplied
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INSTALLATION Two Temperature Zones Using a Temperature Limiting Device CIRCULATED HOT WATER FLOW AND RETURN SYSTEM If a Rheem water heater is to be installed as part of a circulated hot water flow and return system, a storage water heater able to provide a hot water outlet temperature of at least 60 °C must be used. Note: The thermostat must always be set to at least 60 °C. Refer to the diagram on page 20. Refer also to “Recirculation System” on page 43. Temperature Limiting De
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INSTALLATION These conditions may result in either water at a temperature exceeding the requirements of AS/NZS 3500.4 being delivered to the hot water outlets in the ablution areas, or the device closing completely and not delivering water at all, or the device failing. Under either condition, the operation and performance of the device cannot be guaranteed. Circulated Hot Water Flow and Return System – Gas Water Heater REDUCING HEAT LOSSES The cold water line to and the hot wate
