Related Manuals for Rheem 491
Summary of Contents for Rheem 491
- Page 1 Owner’s Guide Installation Instructions Electric Domestic Water Heater Model 491/492 (400L) This water heater must be installed and serviced by a qualified 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 or Rheem New Zealand Limited. TRADEMARKS ® Registered trademark of Rheem Australia Pty Ltd or Rheem New Zealand Limited.
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Page 3: Table Of Contents
Rheem warranty. We recommend you read pages 8 to 41, and the terms of the Rheem warranty on pages 4 to 7. The other pages are intended for the installer but may be of interest. -
Page 4: Warranty
1. THE RHEEM WARRANTY – GENERAL This warranty is given in respect of sales in New Zealand by Rheem New Zealand Limited of 475 Rosebank Road Avondale Auckland 1026. Rheem offer a trained and qualified national service network who will repair or replace components at the address of the unit subject to the terms of the Rheem warranty in New Zealand –... - Page 5 Fair wear and tear from adverse conditions (for example, corrosion). Cosmetic defects. If you require a call out and we find that the fault is not covered by the Rheem warranty, you are responsible for Rheem Service Centre call out costs. If you wish to have the relevant component repaired or replaced by Rheem that service will be at your cost.
- Page 6 3. WHAT IS COVERED BY THE RHEEM WARRANTY FOR THE WATER HEATERS DETAILED IN THIS DOCUMENT Rheem will repair or replace a faulty component of your unit if it fails to operate in accordance with its specifications as follows: The period from the date...
- Page 7 (from the rating label on the unit). b) A Rheem Service Centre will arrange for the unit to be tested and assessed on-site. c) If Rheem determines that you have a valid warranty claim, Rheem will repair or replace the unit in accordance with this warranty.
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Page 8: About Your Water Heater
® Rheem 491/492 series models are available with either a single heating unit or with twin heating units (refer to “Single Element Model” on page 11 and “Twin Element Model” on page 11). Water is stored in a vitreous enamel lined steel cylinder and heated by the electric immersion heating unit. - Page 9 ® and ensuite when a Rheem 491/492 series water heater is installed. This will keep the water temperature below 55°C at the bathroom and ensuite. The risk of scald injury will be reduced and still allow hotter water to the kitchen and laundry.
- Page 10 If the electrical conduit to the water heater is damaged, it must be replaced by a qualified person in order to avoid a hazard. Phone Rheem Service or their nearest Rheem Service Centre to arrange for an inspection.
- Page 11 ABOUT YOUR WATER HEATER SINGLE ELEMENT MODEL This type of water heater has one heating unit with its own thermostat, located 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 12 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.
- Page 13 ABOUT YOUR WATER HEATER Note: When the electrical supply is switched back on, the water heater will take some time to reheat the water. Depending upon the power supply connection, hot water may not be available until the next day. HOW DO I KNOW IF THE WATER HEATER IS INSTALLED CORRECTLY? Installation requirements are shown on pages 24 to 31.
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Page 14: Maintenance Requirements
Note: The major 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. Only genuine replacement parts should be used on this water heater. - Page 15 If water does not flow freely from the drain line when the lever is lifted, then the water heater should be checked by your Rheem Service Centre. The expansion control valve should be checked for performance or replaced at intervals not exceeding five (5) years, or more...
- Page 16 If water does not flow freely from the drain line when the lever is lifted, then the water heater must be checked. Phone your Rheem Service Centre to arrange for an inspection. The temperature pressure relief valve should be replaced at intervals not exceeding five (5) years, or more frequently in areas where there is a high incidence of water deposits (refer to “Water Supplies”...
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Page 17: Water Supplies
Rheem warranty. In addition, the use of an incorrect colour coded anode may shorten the life of the water heater cylinder. - Page 18 WATER SUPPLIES TOTAL DISSOLVED SOLIDS (TDS) mg/L 2500 (CONDUCTIVITY - μS/cm) (60) (215) (570) (860) (3570) Green Black Blue Blue Above 2500 mg/L, Warranty applies to a vitreous-enamel-lined no warranty applies water heater cylinder if the correct coloured to a vitreous- enamel-lined water anode is used for the TDS of the water heater cylinder...
- Page 19 Where the saturation index exceeds +0.40, the water is very scaling. An expansion control valve must be fitted on the cold water line after the non-return valve to protect and for the Rheem warranty to apply to the temperature pressure relief valve and water heater cylinder.
- Page 20 The water heater and its components are not suitable for certain water chemistries. Those chemistries are listed below. If the water heater is connected at any time to a water supply with the following water chemistry, the Rheem warranty will not cover any resultant faults on the components listed below:...
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Page 21: 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) ... - Page 22 Water heater size Do you have the correct size water heater for your requirements? The sizing guide in the Rheem sales literature and on the Rheem website (www.rheem.co.nz) suggests average sizes that may be needed. TEMPERATURE PRESSURE RELIEF VALVE RUNNING ...
- Page 23 Extended time controlled supply, Domestic / Continuous. For types of tariffs, refer to “Single Element Model” on page 11 and “Twin Element Model” on page 11. IF YOU HAVE CHECKED ALL THE FOREGOING AND STILL BELIEVE YOU NEED ASSISTANCE, PHONE RHEEM SERVICE OR THEIR NEAREST RHEEM SERVICE CENTRE.
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Page 24: Installation
INSTALLATION THIS WATER HEATER IS NOT SUITABLE FOR POOL HEATING INSTALLATION STANDARDS The water heater must be installed: by a qualified person, and in accordance with the installation instructions, and to conform to Clauses G12 and H1 of the New Zealand Building Code, and ... - Page 25 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 cold water connection diagram on page 32. 491/492 Model Temp press relief valve setting...
- Page 26 ® between a Rheem 491/492 series model water heater and the hot water outlets in any ablution area such as a bathroom or ensuite, to reduce the risk of scalding. The installing plumber may have a legal obligation to ensure the installation of...
- Page 27 ERROR! REFERENCE SOURCE NOT FOUND. CIRCULATED HOT WATER FLOW AND RETURN SYSTEM If a Rheem electric water heater is to be installed as part of a circulated hot water flow and return system, it must be able to provide a hot water outlet temperature of at least 60°C.
- Page 28 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. The benefits of the Off-Peak electricity supply will be significantly reduced.
- Page 29 Rheem warranty. In addition, the use of an incorrect colour coded anode may shorten the life of the water heater cylinder.
- Page 30 TYPICAL INSTALLATION – OUTDOOR LOCATION TYPICAL INSTALLATION – INDOOR LOCATION...
- Page 31 Weight (cartoned) All models are suitable for either indoor or outdoor installation. 491, 492 series 250 to 400 models have left and right hand (dual handed - DH) water connections and a TPR valve fitting on the left hand side only.
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Page 32: Connections - Plumbing
Rp 1/2 WATER INLET AND OUTLET ® The water connections can be made to either side. Rheem 491/492 series model water heaters have cold and hot water connections on the left hand side. All pipe work must be cleared of foreign matter before connection and purged before attempting to operate the water heater. - Page 33 ERROR! REFERENCE SOURCE NOT FOUND. LEFT AND RIGHT HAND SIDE WATER CONNECTIONS The cold and hot water supplies (491/492 series models) can be connected to either side of a water heater. A kit is supplied with the water heater to plug off the unused cold water and hot water fittings, and where applicable the unused temperature pressure relief valve fitting.
- Page 34 PIPE SIZES This water heater is intended to be permanently connected to the water mains and not connected by a hose-set. A braided flexible hose or semi-flexible connector may be used for connection to the water heater, where permitted by AS/NZS 3500.4.
- Page 35 ERROR! REFERENCE SOURCE NOT FOUND. EXPANSION CONTROL VALVE It is mandatory to install an expansion control valve (ECV) in the cold water line to the water heater to comply with Clause G12 of the New Zealand Building Code. The expansion control valve must always be installed after the non-return valve and be the last valve installed prior to the water heater (refer to the cold water connection diagram on page 32).
- Page 36 If a drain line discharges into a tundish, the drain line from the tundish must be not less than DN20 and one size larger than drain line from the relief valve(s). The drain line from a tundish must meet the same requirements as for a drain line from a relief valve.
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Page 37: Connections - Electrical
THERMOSTAT SETTING ® The thermostat on a Rheem 491/492 series model (bottom thermostat on twin element models) is tradesperson adjustable from 60°C to 70°C. The factory setting of the thermostat is 70°C for these models. The thermostat is adjusted by turning the adjuster anticlockwise to decrease the temperature setting and clockwise to increase the temperature setting. - Page 38 CONNECTIONS – ELECTRICAL For reasons of safety and economy, we advise the thermostat be set at the lowest temperature that will provide sufficient hot water. Dishwasher running costs can be adversely affected if the thermostat is set below 65°C. Discuss the thermostat setting requirements with the householder.
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Page 39: Commissioning
CONNECTIONS – ELECTRICAL 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). -
Page 40: Draining The Water Heater
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 39).