Owner’s Guide and Installation Instructions Gas Heavy Duty Water Heater 260 litre models This water heater must be installed and serviced by a qualified person. Please leave this guide with a responsible officer.
Warning: Upon completion of the installation and commissioning of the water heater, leave this guide with the householder or responsible officer. DO NOT leave this guide inside of the cover of the water heater, as it may interfere with the safe operation of the water heater or ignite when the water heater is turned on. PATENTS This water heater may be protected by one or more patents or registered designs in the name of Rheem Australia Pty Ltd. ® TRADEMARKS Registered trademark of Rheem Australia Pty Ltd.
CONTENTS HOUSEHOLDER – We recommend you read pages 4 to 15. The other pages are intended for the installer but may be of interest. About Your Water Heater ............................................................................................................ 4 Regular Care ................................................................................................................................ 8 Water Supplies......................................................................................
ABOUT YOUR WATER HEATER WATER HEATER APPLICATION This water heater is designed for the purpose of heating potable water. Its use in an application other than this may shorten its life. MODEL TYPE ® The model Rheem Heavy Duty Gas water heater you have chosen is a quick recovery water heater. Water is stored in a vitreous enamel lined steel cylinder and heated by a gas burner located under the cylinder.
ABOUT YOUR WATER HEATER TEMPERATURE ADJUSTMENT The temperature adjusting dial is on the gas valve, located at the lower front of an indoor model and behind the access cover on the lower front on an outdoor model. A setting of „6‟ will normally maintain the water temperature at about 60°C. Each number represents a temperature difference of approximately 6°C. To increase the water temperature to 65°C, turn the gas control knob anticlockwise to a setting of „7‟.
ABOUT YOUR WATER HEATER PRECAUTIONS Where damage to property can occur in the event of the water heater leaking, the water heater must be installed in a safe tray. Construction, installation and draining of a safe tray must comply with AS/NZS 3500.4 and all local codes and regulatory authority requirements. The water heater must be maintained in accordance with the Owner‟s Guide and Installation Instructions. Refer to “Regular Care” on page 8 and to “Anode Inspection and Replacement” on page 12.
ABOUT YOUR WATER HEATER 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 fittings. Refer to “Water Supplies” on page 11. If you are in a known harsh water area or you are not sure of your water chemistry, have your water checked against the conditions described on pages 11 to 13.
REGULAR CARE MINOR SIX MONTH MAINTENANCE It is recommended minor maintenance be performed every six months by a responsible officer. The minor maintenance includes: Operate the easing lever on the temperature pressure relief valve. It is very important you raise and lower the lever gently. Refer to “Temperature Pressure Relief Valve” on page 10. Warning: Exercise care to avoid any splashing of water, as water discharged from the drain line will be hot.
REGULAR CARE MAJOR FIVE YEAR SERVICE It is recommended a major five year service be conducted on the water heater. Warning: Servicing of a water heater must only be carried out by qualified personnel. Phone Rheem Service or their nearest Accredited Service Agent. Note: The five year service and routine replacement of any components, such as the anode and relief valve(s), are not included in the Rheem warranty. A charge will be made for this work.
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” on page 15).
WATER SUPPLIES This water heater must be installed in accordance with this advice to be covered by the Rheem warranty. This water heater is manufactured to suit the water conditions of most public reticulated water supplies. However, there are some known water chemistries which can have detrimental effects on the water heater and its operation and / or life expectancy. If you are unsure of your water chemistry, you may be able to obtain information from your local water supply authority.
WATER SUPPLIES ANODE INSPECTION AND REPLACEMENT The anodes installed in your water heater will slowly dissipate whilst protecting the cylinder. The life of the cylinder may be extended by replacing the anodes. If the anodes are not replaced during a five year service (refer to “Major Five Year Service” on page 9) then the maximum time after installation when the anodes should be replaced for this water heater is 8 years.
WATER SUPPLIES no warranty applies to a: temperature pressure relief valve or a water heater cylinder unless an expansion control valve is fitted. SATURATION INDEX (SI) GAS STORAGE WATER HEATERS WITHIN WARRANTY SPECIFICATION -1.0 very corrosive 0 +0.4 SATURATION INDEX (calculated @ 80°C water temperature) scaling corrosive +0.8 very scaling SUMMARY OF WATER CHEMISTRY ADVICE AFFECTING WARRANTY The water heater and its components are not suitable for certain water chemistries.
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) Are you using more 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.
SAVE A SERVICE CALL TEMPERATURE PRESSURE RELIEF VALVE RUNNING Normal Operation It is normal and desirable 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 10).
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) INSTALLATION STANDARDS The water heater must be installed: by a qualified person, and in accordance the installation instructions, and in compliance with Standards AS/NZS 3500.4, AS 5601 or AS/NZS 5601.1, as applicable under local regulations, and all local codes and regulatory authority requirements.
INSTALLATION For a single water heater installation, follow the diagrams on pages 24 and 23. For multiple water heater installations, follow the instructions on pages 28 to 31. INDOOR INSTALLATION The water heater is to be installed at floor level and must stand vertically upright on a stable fireproof base as acceptable to local authorities. There are special requirements in AS 5601 and AS/NZS 5601.1 for water heaters installed in a garage, an enclosed space and other locations.
INSTALLATION OUTDOOR INSTALLATION The water heater is to be installed at ground or floor level on a stable fireproof base as acceptable to local authorities. The water heater must also stand vertically upright with the back of the water heater against or within 25 mm of an external wall or alternatively against a fireproof screen extending at least 500 mm above, below and either side the flue terminal. Failure to observe this precaution can cause problems in high wind areas.
INSTALLATION HOT WATER DELIVERY This water heater can deliver water at temperatures which can cause scalding. It is necessary and we recommend that a temperature limiting device be fitted between the water heater and the hot water outlets in any ablution and public areas such as a bathrooms, ensuites or public amenities, to reduce the risk of scalding.
INSTALLATION 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.
INSTALLATION REDUCING HEAT LOSSES The cold water line to and the hot water line from the water heater must be insulated in accordance with the requirements of AS/NZS 3500.4. The insulation must be weatherproof and UV resistant if exposed. ANODE The vitreous enamel lined cylinder of the water heater is only covered by the Rheem warranty when the total dissolved solids (TDS) content in the water is less than 2500 mg/L and when the correct colour coded anode is used.
INSTALLATION DIMENSIONS AND TECHNICAL DATA Indoor Model 620 260 630 260 litres 260 260 Empty kg 98 106 Full kg 358 366 Storage capacity Mass (tank) Outdoor Hourly Gas Consumption (MJ) Min. Gas Pressure (kPa) Test Point Gas Pressure (kPa) Max. Gas Pressure (kPa) 620 260, 630 260 620 260, 630 260 620 260, 630 260 620 260, 630 260 Natural 51 1.13 1.00 3.50 Propane 51 2.75 2.70 3.50 Butane 39 2.75 2.70 3.50 35 2.75 2.75 3.50 40/36 0.75 0.35 3.
INSTALLATION HEAVY DUTY GAS OUTDOOR 260L TYPICAL INSTALLATION – OUTDOOR LOCATION 23 INSTALLATION
INSTALLATION TYPICAL INSTALLATION – INDOOR LOCATION 24
CONNECTIONS – PLUMBING All plumbing work must be carried out by a qualified person and in compliance with the Standard AS/NZS 3500.4 and all local codes and regulatory authority requirements. All gas work must be carried out by a qualified person and in compliance with the Standard AS 5601 or AS/NZS 5601.1, as applicable under local regulations, and all local codes and regulatory authority requirements. CONNECTION SIZES Hot water connection: Rp 1¼. Cold water connection: Rp 1¼.
CONNECTIONS – PLUMBING TEMPERATURE PRESSURE RELIEF VALVE The temperature pressure relief valve is shipped in the carton with the draught diverter of an indoor model and behind the front cover of an outdoor model. The temperature pressure relief valve must be fitted before the water heater is operated. Before fitting the relief valve, make sure the probe has not been bent. Seal the thread with Teflon tape - never hemp. Make sure the tape does not hang over the end of the thread.
CONNECTIONS – PLUMBING GAS INLET The gas connection is made to the left hand side of the gas control, through the grommet in the left hand side panel on outdoor models. The pipe work must be cleared of foreign matter before connection and purged before attempting to light the water heater. An isolation valve and disconnection union must be installed to allow servicing and removal of the water heater. Note: Refer to the Gas Installations Standard AS 5601 or AS/NZS 5601.
MULTIPLE INSTALLATIONS A multiple installation of Rheem water heaters on a single manifold or multiple manifolds is possible, using ® the Rheem Equa-Flow manifold system, where large volumes of hot water are required. The Equa-Flow principle will function with water heaters in line, around a corner or in rows back to back (refer to the diagrams on page 29). The cold water and hot water manifolds must be designed to balance the flow from each water heater.
MULTIPLE INSTALLATIONS In Line Manifold Single Bank of Water Heaters Multiple Banks of Water Heaters Angle Manifold TPR Valve Drain Line Common Discharge Point Back to Back Manifold 29
MULTIPLE INSTALLATIONS TYPICAL INSTALLATION – RHEEM HEAVY DUTY GAS WATER HEATERS LEGEND RHEEM COMMERCIAL WATER HEATERS TYPICAL INSTALLATION INSTALLATION DIMENSIONS – RHEEM HEAVY DUTY GAS WATER HEATERS In Line Manifold Angle Manifold Back to Back Manifold INSTALLATION LAYOUT MINIMUM DIMENSIONS Notes A MODEL B C D E* 1. A minimum of 900 mm (E* & F*) should be left in front of the water heater for access, servicing and water heater removal. 2.
MULTIPLE INSTALLATIONS MANIFOLD ARRANGEMENT Hot Manifold Assembly Cold Manifold Assembly 31
COMMISSIONING TO FILL AND TURN ON THE WATER HEATER The gas pilot or burner must not be lit until the water heater is filled with water. Open all of the hot water taps in the building (don‟t forget the showers) and supply cock(s) and valve(s) in the system. Open the isolation valves fully on the cold and hot water branches to the water heater(s) installed in a bank. Open the cold water isolation valve on the cold water line to the water heater(s). Air will be forced out of the taps.
LIGHTING THE WATER HEATER FOR YOUR SAFETY READ BEFORE LIGHTING Warning: This gas water heater is designed to operate reliably and safely as long as the operating instructions are followed exactly. You must comply with these lighting instructions at every stage. Make sure the water heater is filled with water and the water supply is on, otherwise serious damage to the vitreous enamel cylinder lining and plastic components may occur.
LIGHTING THE WATER HEATER LIGHTING INSTRUCTIONS Using the gas control light the water heater as follows: 1. Stop, read the safety information on page 33. 2. Remove the access cover of an outdoor model. 3. Turn the gas control knob fully clockwise to the “” (off) position. 4. Remove the front cover below the gas control of an indoor model. 5. Wait five (5) minutes so any build up of unburnt gas can escape. If you then smell gas, stop and follow “C” in the safety information.
LIGHTING THE WATER HEATER TEST THE WATER HEATER AFTER INSTALLATION The operation of the water heater must be thoroughly checked by the installer. The burner flame must light smoothly and quickly from the pilot flame, and must go out quietly and completely. The main burner flame must be stable, although slight lifting at the front edge of the burner is acceptable when the burner is cold.
DRAINING THE WATER HEATER Warning: Exercise care, as water discharged from the water heater may be of a very high temperature. To drain the water heater: Turn off the water heater (refer to “To Turn Off The Water Heater” on page 32). Close all hot water 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. Attach a hose to the water heater drain cock.
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RHEEM HEAVY DUTY GAS MAINS PRESSURE WATER HEATER WARRANTY - AUSTRALIA ONLY GAS WATER HEATER 620260, 630260 MODELS 1. THE RHEEM WARRANTY – GENERAL 1.1 This warranty is given by Rheem Australia Pty Limited ABN 21 098 823 511 of 1 Alan Street, Rydalmere New South Wales. 1.2 Rheem offer a trained and qualified national service network who will repair or replace components at the address of the water heater subject to the terms of the Rheem warranty.
RHEEM HEAVY DUTY GAS MAINS PRESSURE WATER HEATER WARRANTY - AUSTRALIA ONLY GAS WATER HEATER 620260, 630260 MODELS 3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT 3.
