Page 2 - Notice to Victorian Customers from the; Upon completion of the installation and commissioning of the; DO NOT; leave this guide inside of the cover of the water heater, as it may
PATENTS This water heater may be protected by one or more patents or registered designs. ® Registered trademark of Rheem Australia Pty Ltd. ™ Trademark of Rheem Australia Pty Ltd. Notice to Victorian Customers from the Victorian Plumbing Industry Commission. This water heater must be installed by a ...
Page 3 - CONTENTS
3 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 ......................................................................
Page 4 - ABOUT YOUR WATER HEATER; MODEL TYPE; “Temperature Adjustment”; HOTTER WATER INCREASES THE RISK OF SCALD INJURY.; “Hotter Water Increases the Risk of Scald Injury”
4 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 temperature setting of 82 °...
Page 5 - WARNING
ABOUT YOUR WATER HEATER 5 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. T...
Page 6 - TO TURN OFF THE WATER HEATER; If it is necessary to turn off the water heater:; TO TURN ON THE WATER HEATER; Installation requirements are shown on
ABOUT YOUR WATER HEATER 6 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 work...
Page 7 - DOES THE WATER QUALITY AFFECT THE WATER HEATER?; have your water quality checked against the conditions; HOW LONG WILL THE WATER HEATER LAST?; page; ANODE PROTECTION; “Water Supplies”
ABOUT YOUR WATER HEATER 7 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...
Page 8 - HOW YOUR WATER HEATER WORKS; MAINS PRESSURE; shown on page; ELECTRONIC THERMOSTAT; “Diagnostic Features of; HOT SURFACE IGNITION
8 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 cen...
Page 9 - REGULAR CARE; TEMPERATURE PRESSURE RELIEF VALVE; “Temperature Pressure Relief Valve; It is very important; Failure to do this may result; EXPANSION CONTROL VALVE; The
9 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 approxi...
Page 10 - SERVICING; : Servicing of a gas water heater should only be carried out by
REGULAR CARE 10 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 carr...
Page 11 - SAVE A SERVICE CALL; Reset the water heater. Refer to
11 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 adjace...
Page 12 - “Water Heater Not Operating”
SAVE A SERVICE CALL 12 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 ...
Page 13 - TEMPERATURE PRESSURE RELIEF VALVE RUNNING; “Temperature Pressure; must; be switched off at the switchboard. Phone your; EXPANSION CONTROL VALVE RUNNING; it may discharge a small quantity of water instead of the
SAVE A SERVICE CALL 13 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 pro...
Page 14 - WATER HEATER APPEARS TO BE LEAKING; “Not Enough Hot
SAVE A SERVICE CALL 14 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 ...
Page 15 - INSTALLATION; THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING; 601 and all local codes and regulatory authority
15 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 (typicall...
Page 16 - INDOOR INSTALLATION; for each 110 MJ model; SAFE TRAY
INSTALLATION 16 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 ...
Page 17 - OUTDOOR INSTALLATION
INSTALLATION 17 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 a...
Page 18 - MAINS WATER SUPPLY; (refer to installation diagram on page; TANK WATER SUPPLY
INSTALLATION 18 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 ...
Page 19 - CIRCULATED HOT WATER FLOW AND RETURN SYSTEM; The thermostat must always; Temperature Limiting Device
INSTALLATION 19 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...
Page 20 - REDUCING HEAT LOSSES
INSTALLATION 20 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, th...
Page 21 - SADDLING PIPE WORK
INSTALLATION 21 SADDLING PIPE WORK To prevent damage to the cylinder when attaching pipe clips or saddles to the water heater jacket, we recommend the use of self drilling screws with a maximum length of 12 mm. Should pre drilling be required, extreme caution must be observed when penetrating the ja...
Page 22 - TYPICAL INSTALLATION – OUTDOOR LOCATION
INSTALLATION 22 TYPICAL INSTALLATION – OUTDOOR LOCATION 631 275 model shown
Page 23 - TYPICAL INSTALLATION – INDOOR LOCATION
INSTALLATION 23 TYPICAL INSTALLATION – INDOOR LOCATION 621 275 model shown
Page 24 - DIMENSIONS AND TECHNICAL DATA
INSTALLATION 24 DIMENSIONS AND TECHNICAL DATA Model No. 621265 631265 621275 631275 (Indoor) (Outdoor) (Indoor) (Outdoor) Storage capacity (litres) 265 265 275 275 Nominal Dimensions (mm) A 1795 1835 1895 1865 B 610 610 640 640 C 750 710 780 780 D 750 750 760 760 E 700 700 700 700 F 380 380 340 340 ...
Page 25 - CONNECTIONS – PLUMBING; CONNECTION SIZES; on page
25 CONNECTIONS – PLUMBING CONNECTION SIZES • Hot water connection: RP 1¼/32. • Cold water connection: RP 1¼/32. • Relief valve connection: RP ¾/20. • Gas inlet: RP¾/20. All plumbing work must be carried out by a qualified person and in accordance with the National Plumbing Standard AS/NZS 3500.4 and...
Page 26 - GAS INLET; Always isolate the water heater before pressure testing the gas; PIPE SIZES; (refer to the installation diagram on
CONNECTIONS – PLUMBING 26 GAS INLET The gas connection is made to the left hand side of the gas control. 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 used to allow servicin...
Page 27 - RELIEF VALVE DRAIN; “Multiple Installations”; “Water
CONNECTIONS – PLUMBING 27 RELIEF VALVE DRAIN A copper drain line must be fitted to the relief valve to carry the discharge clear of the water heater. Connect the drain line to the relief valve using a disconnection union. The pipe work from the relief valve to the drain should be as short as possibl...
Page 28 - CONNECTIONS – ELECTRICAL; and a satisfactory megger reading is; THERMOSTAT SETTING; “Temperature
28 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 Wiring Rul...
Page 29 - WIRING A POWER FLUED SYSTEM TO THE WATER HEATER
CONNECTIONS – ELECTRICAL 29 WIRING A POWER FLUED SYSTEM TO THE WATER HEATER An indoor model can be wired to a power flued system. A power flued system must be designed by a qualified person to suit the particular installation and for approval by the gas supply authority. The power flue system must b...
Page 30 - POWER FLUE EXTERNAL CONTROLS – INTERMITTENT OPERATION; Notes; Power source for the water heater, fan and
CONNECTIONS – ELECTRICAL 30 POWER FLUE EXTERNAL CONTROLS – INTERMITTENT OPERATION INTERLOCK TERMINAL 621 SERIES RHEEM multiple water heater installation Notes 1. Power source for the water heater, fan and control circuit must be from the same circuit. 2. R1 monitors return signal. 3. R2 monitors ala...
Page 31 - POWER FLUE EXTERNAL CONTROLS – 24 HOUR OPERATION; event of flue product flow failure.
CONNECTIONS – ELECTRICAL 31 POWER FLUE EXTERNAL CONTROLS – 24 HOUR OPERATION Notes: 1. Power source for the water heater, fan and control circuit must be from the same circuit. 2. R1 monitors return signal. 3. R2 monitors alarm signal. 4. T1 to be set for 20-30 seconds. 5. Use SPO with round earth t...
Page 32 - MULTIPLE INSTALLATIONS; diagrams on page; must not; diagram on page
32 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 corn...
Page 34 - LEGEND
MULTIPLE INSTALLATIONS 34 LEGEND TYPICAL INSTALLATION – RHEEM HEAVY DUTY GAS WATER HEATERS
Page 35 - INSTALLATION DIMENSIONS – RHEEM HEAVY DUTY GAS WATER HEATERS; In Line Manifold
MULTIPLE INSTALLATIONS 35 INSTALLATION DIMENSIONS – RHEEM HEAVY DUTY GAS WATER HEATERS NOTES: 1. Minimum recommended space between wall and back of water heater is 100 mm. 2. A minimum of 900 mm (E* & F*) should be left in front of the water heater for access, servicing and water heater removal....
Page 36 - MANIFOLD ARRANGEMENT
MULTIPLE INSTALLATIONS 36 MANIFOLD ARRANGEMENT Hot Manifold Assembly Cold Manifold Assembly
Page 37 - COMMISSIONING
37 COMMISSIONING TO FILL AND TURN ON THE WATER HEATER 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. • Open all of the hot water tap(s) in the building (don’t forget the showers) and supply cock(...
Page 38 - the gas supply pressure at the inlet to the water heater
COMMISSIONING 38 GAS INLET PRESSURE IMPORTANT – CHECK the gas supply pressure at the inlet to the water heater with the water heater and all other gas burning appliances in the premises operating (burners alight). The minimum gas supply pressures are: Natural Gas 1.13 kPa Propane 2.75 kPa Town / TLP...
Page 39 - LIGHTING THE WATER HEATER; FOR YOUR SAFETY READ BEFORE LIGHTING; This; exactly; “Gas Inlet”; LIGHTING PROCEDURE; The water heater incorporates an automatic ignition system.
39 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 lighting procedure is followed exactly . Make sure the water heater is filled with water and the water supply is on, otherwise serious damage to ...
Page 40 - The removal of the access covers will expose 240 V wiring. They; TEST THE WATER HEATER AFTER INSTALLATION
LIGHTING THE WATER HEATER 40 DIAGNOSTIC FEATURES OF HOT SURFACE IGNITION CONTROL Warning: The removal of the access covers will expose 240 V wiring. They must only be removed by an authorised or service person only. The water heater incorporates an electronic control module. This is located inside t...
Page 41 - “Air Adjustment”; BURNER PRESSURE ADJUSTMENT; Switch off the electrical supply at the isolating switch.; AIR ADJUSTMENT
LIGHTING THE WATER HEATER 41 • The burner flame should be blue, with a clearly defined inner cone - luminous yellow or “floating” flames are not acceptable and must be corrected by opening the interrupter screw (refer to “Air Adjustment” on page 41). • Check the test point pressure and compare with ...
Page 42 - DRAINING THE WATER HEATER; “To Turn Off The Water Heater”
42 DRAINING THE WATER HEATER To drain the water heater: • Turn off the water heater (refer to “To Turn Off The Water Heater” on page 38). • 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 ...
Page 43 - TEMPERATURE CONTROL; to install a circulating
43 TEMPERATURE CONTROL HOTTER WATER INCREASES THE RISK OF SCALD INJURY. 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 p...
Page 44 - THERMOSTAT ADJUSTMENT
TEMPERATURE CONTROL 44 THERMOSTAT ADJUSTMENT The water heater is supplied with the thermostat preset at 70ºC. It will be necessary to adjust the thermostat temperature setting if another temperature is required. When adjusting the thermostat temperature it is necessary to alter the thermostat offset...
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Page 46 - WATER SUPPLIES; ANODE; cold water connection detail on page
46 WATER SUPPLIES Your water heater is manufactured to suit the water conditions of most metropolitan supplies. However, there are some known water supplies which can have detrimental effects on the water heater and its operation and/or life expectancy. If you are unsure of your water quality, you c...
Page 47 - RHEEM MAINS PRESSURE WATER HEATER WARRANTY; WARRANTY CONDITIONS; WARRANTY EXCLUSIONS
47 RHEEM MAINS PRESSURE WATER HEATER WARRANTY - AUSTRALIA ONLY - WARRANTY CONDITIONS 1. This warranty is applicable only to water heaters manufactured from 1 st September 2005. 2. The water heater must be installed in accordance with the Rheem water heater installation instructions, supplied with th...
Page 48 - WARRANTY
RHEEM MAINS PRESSURE WATER HEATER WARRANTY - AUSTRALIA ONLY - 48 WARRANTY Rheem will: a) Repair or, if necessary replace any Rheem water heater; or b) Replace any component (or, if necessary, arrange the installation of a new water heater), which falls within the Warranty Periods specified below, su...
