Rheem Optima Owner's Manual And Installation Instructions

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Installation and owner's manual (36 pages)

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Page 1 Owner’s Guide Installation Instructions Electric Domestic Water Heater This water heater must be installed and serviced by an authorised person. Please leave this guide with the householder.
Page 2 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. Trademark of Rheem Australia Pty Ltd. Note: Every care has been taken to ensure the accuracy in preparation of this publication.
Page 3: Table Of Contents
CONTENTS HOUSEHOLDER - We recommend you read pages 4 to 17. The other pages are intended for the installer but may be of interest About Your Water Heater ............4 Regular Care ................9 Water Supplies ................11 Save A Service Call ..............
Page 4: About Your Water Heater
The Rheem water heater you have chosen is an Optima™ model. The Optima model has a temperature adjusting knob on the lower front of the water heater. Optima models are available with either a single heating unit or with twin heating units. (refer to “Single Element Model”...
Page 5 We recommend and it may also be required by regulations that an approved temperature limiting device be fitted into the hot water pipe work to the bathroom and ensuite when an Optima water heater is installed. This will keep the water temperature below 55°C at the bathroom and ensuite.
Page 6 ABOUT YOUR WATER HEATER WARNING This water heater is only intended to be operated by persons who have the experience or the knowledge and the capabilities to do so. This water heater is not intended to be operated by persons with reduced physical, sensory or mental capabilities i.e.
Page 7 ABOUT YOUR WATER HEATER SINGLE ELEMENT MODEL This type of water heater has one heating unit with its own thermostat. The heating unit is at the base of the water heater. Continuous electricity supply This type of connection is suited to where the storage capacity is less than the normal daily usage.
Page 8 ABOUT YOUR WATER HEATER TO TURN OFF THE WATER HEATER If you plan 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.
Page 9: Regular Care
Rheem Service Centre. The temperature pressure relief valve should be checked for performance or replaced at intervals not exceeding 5 years, or more frequently in areas where there is a high incidence of water deposits (refer to “Water Supplies”...
Page 10 If the water is being delivered at a temperature exceeding 55°C, phone a Rheem Service Centre. The valve should be replaced at intervals not exceeding 5 years, or more frequently in areas where there is a high incidence of water deposits (refer to “Water Supplies”...
Page 11: Water Supplies
WATER SUPPLIES This water heater must be installed in accordance with this advice to be covered by the 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.
Page 12 The life of the water heater cylinder may be extended by arranging for an authorised person to inspect the anode and replace if required. The suggested time after installation when the anode should be inspected is: Optima 10 years For water supplies which are either softened, desalinated or where the water...
Page 13 13. Refer to the cold water connection detail on page 27 for the position of the expansion control valve. Contact Rheem Service Centre if a replacement heating unit is required. SATURATION INDEX (SI) ELECTRIC WATER HEATERS WITHIN WARRANTY SPECIFICATION -1.0...
Page 14 WATER SUPPLIES CHANGE OF WATER SUPPLY The changing or alternating from one water supply to another can have a detrimental effect on the operation and / or life expectation of a water heater cylinder, a temperature pressure relief valve and a heating unit. Where there is a changeover from one water supply to another, e.g.
Page 15: Save A Service Call
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 the manufacture or failure of a part. NOT ENOUGH HOT WATER (OR NO HOT WATER) Is the electricity switched on? Inspect the isolating switch marked “HOT WATER”...
Page 16 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 a Rheem Service Centre Warning: Never replace the relief valve with one of a higher pressure...
Page 17 (overnight and day) or Extended time controlled supply, Domestic / Continuous. For types of tariffs, refer to “Single Element Model” on page 7 and “Twin Element Model” on page 7. IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE, PHONE A RHEEM SERVICE CENTRE.
Page 18: Installation
INSTALLATION THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING The installation must comply with the requirements of AS/NZS 3500.4, AS/NZS 3000 and all local codes and regulatory authority requirements. In New Zealand, the installation must conform with the New Zealand Building Code. All packaging materials must be removed from the water heater prior to its installation.
Page 19 INSTALLATION Remember all local authorities have regulations about putting water heaters into roof spaces. SAFE TRAY It is a requirement of AS/NZS 3500.4 that for a new installation, a water heater be installed in a safe tray where in the event of a leak, property may otherwise be damaged.
Page 20 INSTALLATION Feet for Rheem Externally Mounted Cylinders Optima 180, 300 and 400L Mains Pressure Water Heaters (3 pieces) Outside diameters 180 model – 488mm 300 model – 580mm 400 model – 690mm Feet are 50mm in from edge of cylinder...
Page 21 It is necessary and we recommend that a temperature limiting device be fitted between a Rheemglas or Optima water heater and the hot water outlets in any ablution area such as a bathroom or ensuite, to reduce the risk of scalding. The...
Page 22 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 above 60°C.
Page 23 INSTALLATION Circulated Hot Water Flow and Return Continuous Electric Water Heater Off-Peak or Time Controlled Electricity Supply A single or twin element electric water heater connected to an Off-Peak electricity supply should not be installed as part of a circulated hot water flow and return system in a building.
Page 24 INSTALLATION ANODE The vitreous enamel lined cylinder of the water heater is only covered by 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 installed. The use of an incorrect colour coded anode will void the cylinder warranty and may shorten the life of the water heater cylinder.
Page 25: Dimensions And Technical Data
Boost Element Element Inlet/ Outlet Inlet/ Outlet Inlet/ Outlet Cable Entry Cable Entry Cable Entry Optima 180 Litre Optima 300 Litre Optima 400 Litre Optima Single Element 913 180 Optima Twin Element 913 300 913 400 Hot Water Delivery Litres...
Page 26 INSTALLATION TYPICAL INSTALLATION – OUTDOOR LOCATION Seismic strapping must conform with Building Code Plastic feet supplied must be fitted to base of cylinder. OUTDOOR LOCATIONS TYPICAL INSTALLATION – INDOOR LOCATION INDOOR LOCATIONS...
Page 27: Connections - Plumbing
CONNECTIONS – PLUMBING CONNECTION SIZES Optima Hot water connection: RP ¾/20 Cold water connection: RP ¾/20 Relief valve connection: RP ½/15 All plumbing work must be carried out by a qualified person and in accordance with the Plumbing Standard AS/NZS 3500.4 and local authority requirements.
Page 28 CONNECTIONS – PLUMBING PIPE SIZES To achieve true mains pressure operation, the cold water line to the water heater should be the same size or bigger than the hot water line from the water heater. The pipe sizing for hot water supply systems should be carried out by persons competent to do so, choosing the most suitable pipe size for each individual application.
Page 29 CONNECTIONS – PLUMBING RELIEF VALVE DRAIN DN15 copper drain lines must be fitted to the temperature pressure relief valve and expansion control valve (if one is installed) to carry the discharge clear of the water heater. Connect the drain lines to the valves using disconnection unions.
Page 30: Connections - Electrical
The temperature rating of the power supply wires insulation must suit this application. THERMOSTAT SETTING The thermostat on an Optima model is user adjustable from 60°C to 75°C. The thermostat is adjusted by...
Page 31 65°C. Discuss the thermostat setting requirements with the householder. ASSEMBLY OF ADJUSTER MECHANISM ON OPTIMA MODEL When the front cover has been removed, reassemble as follows: Remove the knob from the front...
Page 32 CONNECTIONS – ELECTRICAL WIRING DIAGRAM TWIN ELEMENT ELECTRIC WATER HEATERS NON-SIMULTANEOUS OPERATION OFF-PEAK CONNECTION Electrical Circuit for Twin Element Models – Robertshaw “ST” Thermostats The active from the continuous supply must be connected to the top heating unit circuit and the active from the Off-Peak or time controlled supply must be connected to the bottom heating unit circuit.
Page 33: Commissioning
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 taps in the house (don‟t forget the shower). Open the cold water isolation valve fully on the cold water line to the water heater.
Page 34: Draining The Water Heater
DRAINING THE WATER HEATER To drain the water heater: Turn off the water heater (refer to “To Turn Off The Water Heater” page 33). 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.
Page 35: Warranty Conditions
Rheem or further than 25 km from a regional 7. The water heater must be sized to supply the hot Rheem branch office, or a Rheem Service Centre...
Page 36: Warranty
WARRANTY In addition to your legal rights, Rheem New Zealand makes the following promise to the customer. We will repair, or if necessary, replace a defective domestic water heater, or part, which has failed due to faulty manufacture on the following terms and conditions.

Rheem Optima Owner's Manual And Installation Instructions

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