Rheem Gas Heavy Duty Water Heater Models 265 Litre and 275 Litre manual

This water heater must be installe d and serviced by an authorised person. Please leave this guide w ith a responsible officer. Owners Guide and Installation Instructions Gas Heavy Duty Water Heater 265 Litre and 275 Litre Models[...]

PA TEN TS This water heater may be protected by one or m ore patents or registered designs. ® Registered trademark of Rheem Australia Pt y 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 licensed person as required by the Victoria[...]

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 ................................................................................9 Save A Service Call ..............[...]

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 ° C and a minimum temperature setting of 60 ° C.[...]

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. They must only be removed by an authorised or servi[...]

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 working order. The warranty can become void if relief [...]

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 effect s on the cylinder and fittings. If you are in a known harsh water area you must read page 46 . If you ar e not sure, have your water quality checked against t[...]

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 centre of the cylin der. A flue baffle in this flue e[...]

9 REGULAR CARE TEMPERATURE PRE SSU RE R ELIEF VAL VE 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 [...]

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 carried out by authorised personnel. In commercial app[...]

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 n ot 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 [...]

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 Accredited Service Agent to arrange for an ins[...]

SAVE A SERVICE CALL 13 TEMPERATURE PRES SU RE RELI EF VAL VE RUN NI NG • 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 ra[...]

SAVE A SERVICE CALL 14 WATER HEATER APPEARS TO BE L EAKING 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 accou nt is too hig[...]

15 INSTALLATION THIS WATER HEATER I S 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 [...]

INSTALLATION 16 INDOOR INSTALLATION A secondary flue must be installed with an indoor water heater to d ischarge 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 divert[...]

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 above, below and either side of the flue terminal. [...]

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 1000kPa Expansion control valve setting* 850kPa Ma[...]

INSTALLATION 19 Two Temperature Zon es Using a Temperature Limiting De vice CIRCULATED HOT WATER FLOW AND RETUR N SYSTEM If a Rheem water heater is to be insta lled as part of a circulated hot water flo w and return system, a storage water heater able to provide a hot w ater outlet temperature of at least 60 ° C must be used. Note: The thermostat [...]

INSTALLATION 20 These conditions may result in either water at a temperature exceeding the requirements of AS/NZS 35 00.4 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 [...]

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 jacket of the water heater. Note: Damage to the cyli[...]

INSTALLATION 22 TYPICAL INSTALLATION – OUTDOOR LOCATION 631 275 model shown[...]

INSTALLATION 23 TYPICAL INSTALLATION – INDOOR LOCATION 621 275 model shown[...]

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 G 1655 1655 1695 1695 H 36° 36° 36° 36° K 660[...]

25 CONNECTIONS – PLUMBING CONNECTION SIZE S • 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 ac cordance with the National Plumbing Standard AS/NZS 3500.4 and local authority requirements. All[...]

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 servicing and removal of the water heater. Refer to the [...]

CONNECTIONS – PLUMBING 27 RELIEF VALVE DRAIN A copper drain line must be fitted to the r elief 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 possible and fall all the way from the w ater heater w[...]

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 car ried out by a qualified person and in accordance with the Wiring Rules AS/NZS 3000 and local authority requirements[...]

CONNECTIONS – ELECTRICAL 29 WIRING A POWER FLUED SYSTEM TO THE WAT ER HEAT ER 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 syst em must be interlocked with the water heater(s) to pre[...]

CONNECTIONS – ELECTRICAL 30 POWER FLUE EXTERNAL CONTROLS – INTERMITTENT OPERATION INTERLOCK TERMIN AL 621 SERIES RHEEM multiple water heater ins tallation 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[...]

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 terminal. Water he ater supply cord must be cha[...]

32 MULTIPLE INSTALLATIONS A multiple installation of Rheem water heaters on a single manifold or multiple manifolds is possible, using the Rh eem 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 diagram[...]

MULTIPLE INSTALLATIONS 33 Single Bank of Water Heaters Multiple Banks of Water Heaters TPR Valve Drain Line Common Discharge Point Back to Back Manifold An g le Manifold In Line Manifold[...]

MULTIPLE INSTALLATIONS 34 LEGEND TYPICAL INSTAL L ATION – RHEEM HEAV Y DUTY GAS WAT ER HEATERS[...]

MULTIPLE INSTALLATIONS 35 INSTALLATION DIMENSIONS – RHEEM HEAVY DU TY GAS WATER HEAT ERS 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. Installation Layout Mi nimum Dimensi ons Mode[...]

MULTIPLE INSTALLATIONS 36 MANIFOLD ARRANGEMENT Hot Manifold Assembly Cold Manifold Assembly[...]

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(s) and valve(s) in the system. • Open the is[...]

COMMISSIONING 38 GAS INLET PRESSU RE 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 0.75 kPa Butane 2.75 kPa If this minimum canno[...]

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 wi th water and the water suppl y is on, otherwise serious damage to the vitreous enamel cy linder lining and plastic[...]

LIGHTING THE WATER HEATER 40 DIAGNOSTIC FEATURES OF HOT SUR FACE IGNITION CONTROL Warning: The removal of the access covers wi ll 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 the access cover of an indoor mode l and to the r[...]

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 the rating label. Adjust if necessary.[...]

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 release the pressure in the water heater[...]

43 TEMPERATURE CONTROL HOTTER WATER INCRE ASES THE RIS K OF SCALD INJUR Y. 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 bathrooms, ensuites or publ[...]

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 th e thermostat offset. The table outlines the thermostat temperature [...]

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46 WATER SUPPLIES Your water heater is manufactured to suit the wate r conditions of most metropolitan supplies. However, there are some known water supplies which can have detrimental effects on the water heater and its operation a nd/or life expectancy. If you are unsure of your water quality, you can obtain information from your local water supp[...]

47 RHEEM MAINS PRESSURE WATER HEATE R 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 the water heater, and in accordance with all releva[...]

RHEEM MAINS PRESSURE WATER HEATE R 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 , subject to the warranty conditions and exclusions[...]